KR102632260B1 - Absorbent for simultaneous removal of radioactive material and orgarnic matter from wastewater and Manufacturing method thereof - Google Patents
Absorbent for simultaneous removal of radioactive material and orgarnic matter from wastewater and Manufacturing method thereof Download PDFInfo
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- 230000002745 absorbent Effects 0.000 title 1
- 239000002250 absorbent Substances 0.000 title 1
- 239000012857 radioactive material Substances 0.000 title 1
- 239000002351 wastewater Substances 0.000 title 1
- 239000003463 adsorbent Substances 0.000 claims abstract description 64
- 239000002699 waste material Substances 0.000 claims abstract description 52
- DCYOBGZUOMKFPA-UHFFFAOYSA-N iron(2+);iron(3+);octadecacyanide Chemical compound [Fe+2].[Fe+2].[Fe+2].[Fe+3].[Fe+3].[Fe+3].[Fe+3].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-] DCYOBGZUOMKFPA-UHFFFAOYSA-N 0.000 claims abstract description 38
- 239000007788 liquid Substances 0.000 claims abstract description 38
- 229960003351 prussian blue Drugs 0.000 claims abstract description 38
- 239000013225 prussian blue Substances 0.000 claims abstract description 38
- 230000002285 radioactive effect Effects 0.000 claims abstract description 37
- 239000000126 substance Substances 0.000 claims abstract description 32
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims abstract description 28
- 239000011259 mixed solution Substances 0.000 claims abstract description 27
- 239000000356 contaminant Substances 0.000 claims abstract description 26
- 238000002156 mixing Methods 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 20
- 239000012530 fluid Substances 0.000 claims abstract description 14
- 238000010438 heat treatment Methods 0.000 claims abstract description 12
- 239000007787 solid Substances 0.000 claims abstract description 10
- 239000000243 solution Substances 0.000 claims abstract description 7
- 239000003344 environmental pollutant Substances 0.000 claims description 11
- 231100000719 pollutant Toxicity 0.000 claims description 11
- 238000010979 pH adjustment Methods 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 abstract description 7
- 238000001179 sorption measurement Methods 0.000 description 44
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 14
- 239000003002 pH adjusting agent Substances 0.000 description 10
- 239000002352 surface water Substances 0.000 description 9
- 229910052792 caesium Inorganic materials 0.000 description 8
- TVFDJXOCXUVLDH-UHFFFAOYSA-N caesium atom Chemical compound [Cs] TVFDJXOCXUVLDH-UHFFFAOYSA-N 0.000 description 8
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 6
- 239000007864 aqueous solution Substances 0.000 description 6
- 239000012153 distilled water Substances 0.000 description 6
- 239000008399 tap water Substances 0.000 description 6
- 235000020679 tap water Nutrition 0.000 description 6
- 239000005416 organic matter Substances 0.000 description 5
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 4
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 2
- 150000008064 anhydrides Chemical class 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- 229910000027 potassium carbonate Inorganic materials 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000008213 purified water Substances 0.000 description 2
- 239000002901 radioactive waste Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 229910052712 strontium Inorganic materials 0.000 description 2
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000004992 fission Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 239000010857 liquid radioactive waste Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000005374 membrane filtration Methods 0.000 description 1
- -1 membrane filtration Chemical compound 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000001850 reproductive effect Effects 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000012086 standard solution Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/3085—Chemical treatments not covered by groups B01J20/3007 - B01J20/3078
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/3078—Thermal treatment, e.g. calcining or pyrolizing
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
- G21F9/04—Treating liquids
- G21F9/06—Processing
- G21F9/12—Processing by absorption; by adsorption; by ion-exchange
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- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Life Sciences & Earth Sciences (AREA)
- Inorganic Chemistry (AREA)
- Hydrology & Water Resources (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
본 발명은 폐액 내 방사성오염물질과 유기물 동시제거가 가능한 흡착제 및 이의 제조방법에 관한 것으로서, 보다 상세하게는 황산알루미늄과 프러시안블루를 최적의 비로 혼합하여 폐액 내 방사성오염물질과 유기물 동시제거가 가능한 흡착제 및 이의 제조방법에 관한 것이다.
본 발명에 따른 폐액 내 방사성오염물질과 유기물 동시제거가 가능한 흡착제의 제조방법은 황산알루미늄과 프러시안블루 수용액을 혼합한 혼합액을 제조하는 혼합액 제조단계(S100);와 상기 혼합액의 pH를 제어하는 pH 제어단계(S200);와 pH가 제어된 혼합액을 가열하여 고형물의 흡착제를 수득하는 가열단계(S300);를 포함한다. The present invention relates to an adsorbent capable of simultaneously removing radioactive contaminants and organic substances in waste fluid and a method for manufacturing the same. More specifically, it relates to an adsorbent capable of simultaneously removing radioactive contaminants and organic substances in waste fluid by mixing aluminum sulfate and Prussian blue at an optimal ratio. It relates to adsorbents and their manufacturing methods.
The method for producing an adsorbent capable of simultaneously removing radioactive contaminants and organic substances in waste liquid according to the present invention includes a mixed solution preparation step (S100) of preparing a mixed solution of aluminum sulfate and an aqueous Prussian blue solution; and pH controlling the pH of the mixed solution. It includes a control step (S200); and a heating step (S300) of heating the pH-controlled mixed solution to obtain a solid adsorbent.
Description
본 발명은 폐액 내 방사성오염물질과 유기물 동시제거가 가능한 흡착제 및 이의 제조방법에 관한 것으로서, 보다 상세하게는 황산알루미늄과 프러시안블루를 최적의 비로 혼합하여 폐액 내 방사성오염물질과 유기물 동시제거가 가능한 흡착제 및 이의 제조방법에 관한 것이다.The present invention relates to an adsorbent capable of simultaneously removing radioactive contaminants and organic substances in waste fluid and a method for manufacturing the same. More specifically, it relates to an adsorbent capable of simultaneously removing radioactive contaminants and organic substances in waste fluid by mixing aluminum sulfate and Prussian blue at an optimal ratio. It relates to adsorbents and their manufacturing methods.
방사성 폐기물은 원자력 시설에서 주로 발생되며 의료계나 자연계에서 발생되기도 한다. 이들 방사성 폐기물 중 액체 방사성 폐기물은 여러 가지 방사성 동위원소(세슘(Cesium), 스트론튬(Strontium), 코발트(Cobalt)) 등으로 이루어져 있다. Radioactive waste is mainly generated from nuclear facilities, but can also be generated in the medical or natural world. Among these radioactive wastes, liquid radioactive waste consists of various radioactive isotopes (Cesium, Strontium, Cobalt), etc.
이 중 방사성 세슘은 핵분열물질로서 방사성 핵종 중 가장 많은 양을 차지하고 있으며, 긴 반감기와 높은 방사능을 가지고 있어 자연계에 노출될 시 오랜 시간 영향을 줄 수 있으며, 특히, 인체에 유입되어 장기 노출될 경우에는 근육과 생식 기능에 영향을 끼쳐 기형 혹은 유전자 변이를 일으킬 수 있다. Among these, radioactive cesium is a fission material and accounts for the largest amount of radionuclides. It has a long half-life and high radioactivity, so it can have long-term effects when exposed to the natural world, especially if it enters the human body and is exposed for a long time. It can affect muscle and reproductive functions and cause deformities or genetic mutations.
이러한 문제점으로 인해 전 세계적으로 많은 비용을 투자하여, 해수 및 호소 내에 존재하는 방사성 세슘을 제거하는 기술이 다양하게 연구·개발되고 있다.Due to these problems, a lot of money is being invested around the world to research and develop various technologies to remove radioactive cesium present in seawater and lakes.
지금까지 연구된 방사성 세슘을 제거하는 기술로는 침전법, 멤브레인 필터법, 전기분해법, 이온교환반응법, 식물정화법, 미생물-광물화법, 그리고 흡착제거법 등 다양한 방법이 존재한다. 이들 중에서 흡착제거법이 가장 경제적이고 보편적인 방법으로써 많은 연구가 진행되어 왔다.There are various techniques for removing radioactive cesium that have been studied so far, including precipitation, membrane filter, electrolysis, ion exchange reaction, phytoremediation, microbial-mineralization, and adsorption removal method. Among these, adsorption removal method is the most economical and common method, and much research has been conducted.
한편, 천연유기물질(Natural Organic Matter, NOM)은 식물이나 동물 사체의 분해로부터 유래하는 매우 복잡한 구조를 가진 Humic substance 로 모든 토양과 수 환경내 존재한다. Meanwhile, Natural Organic Matter (NOM) is Humic substance with a very complex structure derived from the decomposition of plant or animal corpses and exists in all soil and water environments.
NOM 은 정수처리공정에서 응집제요구량을 증가시키고, 전염소처리나 염소소독 과정에서 소독부산물(DBPs; distifection by-products)을 형성할 뿐만 아니라 정수 중에 잔존하여 배급소계통에서 미생물 증식을 촉진하기 때문에,NOM의 제거는 정수처리공정에서 중요하다. NOM 을 제거하기 위한 방법으로는 활성탄, 막여과, 오존산화 등이 이용되고 있다.NOM not only increases the amount of coagulant required in the water purification process and forms disinfection by-products (DBPs) during the chlorine treatment or chlorine disinfection process, but also remains in the purified water and promotes the growth of microorganisms in the distribution system. Removal of is important in the water treatment process. Methods for removing NOM include activated carbon, membrane filtration, and ozone oxidation.
종래에는 방사성 오염물질 제거와 천연유기물질의 제거가 별도의 공정으로 진행되는 경우가 대부분이었고, 동시에 제거공정을 진행하더라도 제거효율이 좋지 못한 한계가 있었다. Conventionally, in most cases, the removal of radioactive contaminants and the removal of natural organic substances were carried out as separate processes, and even if the removal processes were carried out simultaneously, the removal efficiency was limited.
이에, 본 발명자는 폐액 내 방사성 오염물질과 천연유기물질의 동시제거가 가능한 흡착제를 제조하고, 이를 적용하기 위한 폐액의 제거조건 등을 도출하여 본 발명에 이르게 되었다.Accordingly, the present inventor manufactured an adsorbent capable of simultaneously removing radioactive contaminants and natural organic substances in waste fluid, derived waste fluid removal conditions for applying it, and arrived at the present invention.
상기와 같은 문제점을 해결하기 위한 본 발명의 목적은 황산알루미늄과 프러시안블루를 최적의 비로 혼합하여 폐액 내 방사성오염물질과 유기물 동시제거가 가능한 흡착제 및 이의 제조방법을 제공하는 것이다.The purpose of the present invention to solve the above problems is to provide an adsorbent capable of simultaneously removing radioactive contaminants and organic substances in waste fluid by mixing aluminum sulfate and Prussian blue at an optimal ratio, and a method for manufacturing the same.
상기 과제를 해결하기 위한 본 발명의 폐액 내 방사성오염물질과 유기물 동시제거가 가능한 흡착제의 제조방법은 황산알루미늄과 프러시안블루 수용액을 혼합한 혼합액을 제조하는 혼합액 제조단계(S100);와 상기 혼합액의 pH를 제어하는 pH 제어단계(S200);와 pH가 제어된 혼합액을 가열하여 고형물의 흡착제를 수득하는 가열단계(S300);를 포함한다.In order to solve the above problem, the method for producing an adsorbent capable of simultaneously removing radioactive contaminants and organic substances in waste liquid of the present invention includes a mixed solution preparation step (S100) of preparing a mixed solution of aluminum sulfate and an aqueous Prussian blue solution; It includes a pH control step (S200) of controlling the pH; and a heating step (S300) of heating the pH-controlled mixed solution to obtain a solid adsorbent.
상기 혼합액 제조단계(S100)에서는 황산알루미늄과 프러시안블루 고형물의 혼합중량비가 1 : 0.5 내지 1 인 것을 특징으로 한다.In the mixed solution preparation step (S100), the mixing weight ratio of aluminum sulfate and Prussian blue solids is 1:0.5 to 1.
상기 과제를 해결하기 위한 본 발명의 폐액 내 방사성오염물질과 유기물 동시제거가 가능한 흡착제는 상술된 제조방법에 의해 제조되는 것을 특징으로 한다. The adsorbent of the present invention capable of simultaneously removing radioactive contaminants and organic substances in waste fluid to solve the above problems is characterized by being manufactured by the above-described manufacturing method.
상기 과제를 해결하기 위한 본 발명의 폐액 내 방사성오염물질과 유기물 동시제거가 가능한 흡착제를 이용한 폐액처리방법은 폐액의 pH를 6 내지 8로 제어하는 폐액 pH 조정단계;와 pH가 조정된 폐액에 흡착제를 투입하는 흡착제 투입단계;를 포함한다.In order to solve the above problems, the waste liquid treatment method using an adsorbent capable of simultaneously removing radioactive contaminants and organic substances in the waste liquid of the present invention includes a waste liquid pH adjustment step of controlling the pH of the waste liquid to 6 to 8; and the addition of an adsorbent to the pH-adjusted waste liquid. It includes; adding an adsorbent.
상술한 바와 같이, 본 발명에 따른 폐액 내 방사성오염물질과 유기물 동시제거가 가능한 흡착제 및 이의 제조방법에 의하면, 폐액 내 방사성오염물질과 유기물 동시제거가 가능하여 경제적이고 효율적으로 폐액 내 오염원을 제거할 수 있는 효과가 있다. As described above, according to the adsorbent capable of simultaneously removing radioactive pollutants and organic substances in waste liquid according to the present invention and its manufacturing method, it is possible to simultaneously remove radioactive pollutants and organic substances in waste liquid, thereby enabling the economical and efficient removal of pollutants in waste liquid. There is a possible effect.
도 1은 본 발명의 실시예에 따른 황산알루미늄과 프러시안블루의 혼합중량비에 따른 NOM, Cs 흡착제거율을 보여주는 그래프.
도 2는 본 발명의 실시예에 따른 황산알루미늄과 PB의 혼합중량비별 증류수, 수돗물, 낙동강 지표수에서 NOM, Cs의 흡착제거율을 보여주는 그래프.
도 3은 본 발명의 실시예에 따른 원수(시료)의 pH에 따른 NOM, Cs의 흡착제거율을 보여주는 그래프.
도 4는 본 발명의 실시예에 따른 흡착제의 사용량에 따른 NOM, Cs의 흡착제거율을 보여주는 그래프. Figure 1 is a graph showing NOM and Cs adsorption and removal rates according to the mixing weight ratio of aluminum sulfate and Prussian blue according to an embodiment of the present invention.
Figure 2 is a graph showing the adsorption and removal rates of NOM and Cs in distilled water, tap water, and Nakdong River surface water by mixing weight ratio of aluminum sulfate and PB according to an embodiment of the present invention.
Figure 3 is a graph showing the adsorption and removal rates of NOM and Cs according to the pH of raw water (sample) according to an embodiment of the present invention.
Figure 4 is a graph showing the adsorption and removal rates of NOM and Cs according to the amount of adsorbent used according to an embodiment of the present invention.
본 발명의 구체적 특징 및 이점들은 이하에서 첨부도면을 참조하여 상세히 설명한다. 이에 앞서 본 발명에 관련된 기능 및 그 구성에 대한 구체적인 설명이 본 발명의 요지를 불필요하게 흐릴 수 있다고 판단되는 경우에는 구체적인 설명을 생략하기로 한다.Specific features and advantages of the present invention will be described in detail below with reference to the accompanying drawings. Prior to this, if it is determined that a detailed description of the functions and configuration related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description will be omitted.
본 발명의 용어 '방사성오염물질'은 세슘, 스트론튬, 코발트 등을 포함하며, 바람직하게는, 방사성 세슘이다. The term 'radioactive pollutant' of the present invention refers to It includes cesium, strontium, cobalt, etc., and is preferably radioactive cesium.
또한, 본 발명의 용어 '유기물'은 폐액 내 포함되며, 탄소 원자를 포함하는 물질을 일컫는 것으로, 바람직하게는, 천연유기물질(Natural Organic Matter, NOM)이다. In addition, the term 'organic matter' in the present invention refers to a material contained in waste liquid and containing carbon atoms, and is preferably a natural organic matter (NOM).
본 발명은 폐액 내 방사성오염물질과 유기물 동시제거가 가능한 흡착제 및 이의 제조방법에 관한 것으로서, 보다 상세하게는 황산알루미늄과 프러시안블루를 최적의 비로 혼합하여 폐액 내 방사성오염물질과 유기물 동시제거가 가능한 흡착제 및 이의 제조방법에 관한 것이다.The present invention relates to an adsorbent capable of simultaneously removing radioactive contaminants and organic substances in waste fluid and a method for manufacturing the same. More specifically, it relates to an adsorbent capable of simultaneously removing radioactive contaminants and organic substances in waste fluid by mixing aluminum sulfate and Prussian blue at an optimal ratio. It relates to adsorbents and their manufacturing methods.
본 발명의 폐액 내 방사성오염물질과 유기물 동시제거가 가능한 흡착제의 제조방법은 황산알루미늄과 프러시안블루 수용액을 혼합한 혼합액을 제조하는 혼합액 제조단계(S100)와 상기 혼합액의 pH를 제어하는 pH 제어단계(S200)와 pH가 제어된 혼합액을 가열하여 고형물의 흡착제를 수득하는 가열단계(S300)를 포함한다.The method for producing an adsorbent capable of simultaneously removing radioactive contaminants and organic substances in waste liquid of the present invention includes a mixed solution preparation step (S100) of preparing a mixed solution of aluminum sulfate and an aqueous Prussian blue solution and a pH control step of controlling the pH of the mixed solution. (S200) and a heating step (S300) of heating the pH-controlled mixed solution to obtain a solid adsorbent.
혼합액 제조단계(S100)에서는 황산알루미늄과 프러시안블루 수용액을 혼합한 혼합액을 제조하게 된다.In the mixed solution preparation step (S100), a mixed solution of aluminum sulfate and Prussian blue aqueous solution is prepared.
이때, 황산알루미늄(Al2(SO4)3)은 무수물, 수화물 또는 이들의 조합 중 어느 하나의 형태를 사용할 수 있으며, 바람직하게는, 상온에서 안정한 황산알루미늄·18수화물(Al2(SO4)3·18H2O)을 사용할 수 있다.At this time, aluminum sulfate (Al 2 (SO 4 ) 3 ) may be used in the form of any one of anhydride, hydrate, or a combination thereof, and is preferably aluminum sulfate-18 hydrate (Al 2 (SO 4 ), which is stable at room temperature. 3 ·18H 2 O) can be used.
프러시안블루(Prussian Blue)는 분말 또는 수용액 중 어느 하나의 형태를 사용할 수 있으며, 바람직하게는 수용액의 형태로 투입될 수 있다. Prussian Blue can be used in either powder or aqueous solution form, and is preferably added in the form of an aqueous solution.
상기 혼합액 제조단계(S100)에서는 황산알루미늄과 프러시안블루 고형물의 혼합중량비가 1 : 0.5 내지 1 되도록 혼합하며, 바람직하게는, 1: 1의 중량비로 혼합한다.In the mixed solution preparation step (S100), the aluminum sulfate and Prussian blue solids are mixed at a weight ratio of 1:0.5 to 1, preferably at a weight ratio of 1:1.
pH 제어단계(S200)에서는 pH 조절제로 상기 혼합액의 pH를 제어하는 단계로, 상기 pH 조절제로는 수산화나트륨, 수산화칼륨, 탄산나트륨, 탄산수소나트륨 및 탄산칼륨 중 적어도 어느 하나를 사용할 수 있으며, 바람직하게는, 수산화나트륨을 사용할 수 있다.In the pH control step (S200), the pH of the mixed solution is controlled with a pH adjuster. At least one of sodium hydroxide, potassium hydroxide, sodium carbonate, sodium bicarbonate, and potassium carbonate may be used as the pH adjuster, preferably. , sodium hydroxide can be used.
상기 pH 제어단계(S200)에서는 pH 5 내지 9, 바람직하게는, pH 6 내지 8, 더욱 바람직하게는, pH 6 내지 7이 되도록 제어할 수 있다. 이때, pH 조절제 투입 초기에는 pH 조절제를 5 내지 10ml씩 주입하며 중화시키고, pH 가 5를 초과하기 시작하면 pH 조절제를 1 내지 3ml씩 투입하여 pH를 상기 범위 내에서 서서히 중화시킨다. In the pH control step (S200), the pH can be controlled to be 5 to 9, preferably, pH 6 to 8, and more preferably, pH 6 to 7. At this time, at the beginning of the addition of the pH adjuster, 5 to 10 ml of the pH adjuster is injected to neutralize it. When the pH begins to exceed 5, 1 to 3 ml of the pH adjuster is added to gradually neutralize the pH within the above range.
가열단계(S300)에서는 pH가 제어된 혼합액을 가열하여 수분을 증발시켜 고형의 흡착제를 수득하게 된다. 이때, 가열은 100 내지 150℃에서 12 내지 48시간 동안 수행되며, 바람직하게는, 100 내지 130℃에서 24 내지 36시간 수행할 수 있다. In the heating step (S300), the pH-controlled mixed solution is heated to evaporate moisture to obtain a solid adsorbent. At this time, heating is performed at 100 to 150°C for 12 to 48 hours, preferably at 100 to 130°C for 24 to 36 hours.
이하, 본 발명의 폐액 내 방사성오염물질과 유기물 동시제거가 가능한 흡착제를 설명하도록 한다. Hereinafter, the adsorbent of the present invention capable of simultaneously removing radioactive contaminants and organic substances in waste liquid will be described.
본 발명에 따른 폐액 내 방사성오염물질과 유기물 동시제거가 가능한 흡착제는 상술된 흡착제의 제조방법에 의해 제조된다. The adsorbent capable of simultaneously removing radioactive contaminants and organic substances in waste fluid according to the present invention is manufactured by the above-described adsorbent manufacturing method.
본 발명에 따른 폐액 내 방사성오염물질과 유기물 동시제거가 가능한 흡착제는 황산알루미늄과 프러시안블루 수용액을 혼합한 혼합액을 제조하고, 상기 혼합액의 pH를 제어한 후 pH가 제어된 혼합액을 가열하여 분말상의 흡착제가 수득된다.The adsorbent capable of simultaneously removing radioactive pollutants and organic substances in waste fluid according to the present invention prepares a mixed solution of aluminum sulfate and an aqueous Prussian blue solution, controls the pH of the mixed solution, and then heats the pH-controlled mixed solution to form a powdery state. An adsorbent is obtained.
황산알루미늄(Al2(SO4)3)은 무수물, 수화물 또는 이들의 조합 중 어느 하나의 형태를 사용할 수 있으며, 바람직하게는, 상온에서 안정한 황산알루미늄·18수화물(Al2(SO4)3·18H2O)을 사용할 수 있다.Aluminum sulfate (Al 2 (SO 4 ) 3 ) can be used in the form of an anhydride, hydrate, or a combination thereof, and is preferably aluminum sulfate-18 hydrate (Al 2 (SO 4 ) 3 ), which is stable at room temperature. 18H 2 O) can be used.
프러시안블루(Prussian Blue)는 분말 또는 수용액 중 어느 하나의 형태를 사용할 수 있으며, 바람직하게는 수용액의 형태로 투입될 수 있다. Prussian Blue can be used in either powder or aqueous solution form, and is preferably added in the form of an aqueous solution.
이때, 황산알루미늄과 프러시안블루 고형물의 혼합중량비가 1 : 0.5 내지 1 되도록 혼합하며, 바람직하게는, 1: 1의 중량비로 혼합한다.At this time, the aluminum sulfate and Prussian blue solids are mixed at a mixing weight ratio of 1:0.5 to 1, preferably at a weight ratio of 1:1.
제조된 혼합액은 pH 조절제에 의해 pH가 제어되며, 상기 pH 조절제로는 수산화나트륨, 수산화칼륨, 탄산나트륨, 탄산수소나트륨 및 탄산칼륨 중 적어도 어느 하나를 사용할 수 있으며, 바람직하게는, 수산화나트륨을 사용할 수 있다.The pH of the prepared mixed solution is controlled by a pH adjuster. As the pH adjuster, at least one of sodium hydroxide, potassium hydroxide, sodium carbonate, sodium bicarbonate, and potassium carbonate can be used. Preferably, sodium hydroxide can be used. there is.
이때, pH 제어는 pH 5 내지 9, 바람직하게는, pH 6 내지 8, 더욱 바람직하게는, pH 6 내지 7이 되도록 제어할 수 있다. 이때, pH 조절제 투입 초기에는 pH 조절제를 5 내지 10ml씩 주입하며 중화시키고, pH 가 5를 초과하기 시작하면 pH 조절제를 1 내지 3ml씩 투입하여 pH를 상기 범위 내에서 서서히 중화시킨다. At this time, the pH can be controlled to be pH 5 to 9, preferably pH 6 to 8, and more preferably pH 6 to 7. At this time, at the beginning of the addition of the pH adjuster, 5 to 10 ml of the pH adjuster is injected to neutralize it. When the pH begins to exceed 5, 1 to 3 ml of the pH adjuster is added to gradually neutralize the pH within the above range.
pH가 제어된 혼합액은 가열되어 수분을 증발시킴으로써 고형의 흡착제가 수득된다. 이때, 가열은 100 내지 150℃에서 12 내지 48시간 동안 수행되며, 바람직하게는, 100 내지 130℃에서 24 내지 36시간 수행할 수 있다. The pH-controlled mixed solution is heated to evaporate moisture, thereby obtaining a solid adsorbent. At this time, heating is performed at 100 to 150°C for 12 to 48 hours, preferably at 100 to 130°C for 24 to 36 hours.
이하, 본 발명의 폐액 내 방사성오염물질과 유기물 동시제거가 가능한 흡착제를 이용한 폐액처리방법을 설명하도록 한다.Hereinafter, a waste liquid treatment method using an adsorbent capable of simultaneously removing radioactive contaminants and organic substances from waste liquid of the present invention will be described.
본 발명에 따른 폐액 내 방사성오염물질과 유기물 동시제거가 가능한 흡착제를 이용한 폐액처리방법은 폐액의 pH를 6 내지 8로 제어하는 폐액 pH 조정단계와 pH가 조정된 폐액에 흡착제를 투입하는 흡착제 투입단계를 포함한다.The waste liquid treatment method using an adsorbent capable of simultaneously removing radioactive contaminants and organic substances in waste liquid according to the present invention includes a waste liquid pH adjustment step of controlling the pH of the waste liquid to 6 to 8 and an adsorbent injection step of adding an adsorbent to the pH-adjusted waste liquid. Includes.
폐액 pH 조정단계에서는 폐액에 흡착제를 투입하기에 앞서 폐액의 pH를 제어함으로써 오염원(방사성오염물질 및 유기물)의 제거효율을 향상시킬 수 있다.In the waste liquid pH adjustment step, the removal efficiency of pollutants (radioactive pollutants and organic substances) can be improved by controlling the pH of the waste liquid prior to adding the adsorbent to the waste liquid.
폐액 pH 조정단계에서는 pH를 6 내지 8로 제어하는데, pH 6 미만에서는 오염원의 제거효율이 낮고, pH 가 높아질수록 방사성오염물질의 제거율은 높아지나, 반면 유기물의 제거율은 낮아지기 때문에 pH 를 6 내지 8로 제어하는 것이 바람직하다.In the waste liquid pH adjustment step, the pH is controlled to 6 to 8. If the pH is less than 6, the removal efficiency of pollutants is low. As the pH increases, the removal rate of radioactive pollutants increases, but the removal rate of organic matter decreases, so the pH is adjusted to 6 to 8. It is desirable to control it with .
흡착제 투입단계에서는 pH가 조정된 폐액에 흡착제를 투입하여 폐액 내 방사성오염물질과 유기물을 흡착제에 흡착하여 응집 및 침전시키게 된다. In the adsorbent input step, an adsorbent is added to the pH-adjusted waste liquid, and radioactive pollutants and organic substances in the waste liquid are adsorbed onto the adsorbent, causing coagulation and precipitation.
이때, 흡착제는 pH가 조정된 폐액에 5 내지 50ppm, 바람직하게는, 10 내지 30ppm의 농도로 투입되는 것을 특징으로 한다.At this time, the adsorbent is added to the pH-adjusted waste liquid at a concentration of 5 to 50 ppm, preferably 10 to 30 ppm.
또한, 본 발명에 따른 폐액 내 방사성오염물질과 유기물 동시제거가 가능한 흡착제를 이용한 폐액처리방법은 오염원이 흡착되어 응집 및 침전된 흡착제를 제거하는 흡착제 제거단계를 포함할 수 있다. 흡착제 제거단계에서는 오염원이 흡착된 흡착제를 여과 등의 방법을 통해 제거할 수 있다. In addition, the waste liquid treatment method using an adsorbent capable of simultaneously removing radioactive contaminants and organic substances in waste liquid according to the present invention may include an adsorbent removal step of removing the adsorbent on which contaminants are adsorbed and coagulated and precipitated. In the adsorbent removal step, the adsorbent on which the contaminant is adsorbed can be removed through methods such as filtration.
이하, 본 발명을 바람직한 일 실시예를 참조하여 다음에서 구체적으로 상세하게 설명한다. 단, 다음의 실시예는 본 발명을 구체적으로 예시하기 위한 것이며, 이것만으로 한정하는 것은 아니다.Hereinafter, the present invention will be described in detail below with reference to a preferred embodiment. However, the following examples are intended to specifically illustrate the present invention and are not limited thereto.
1. 흡착제의 제조1. Preparation of adsorbent
2000mL 비이커에 황산알루미늄·18수화물(Al2(SO4)3·18H2O) 123.4074g과 PB(Prussian Blue)수용액(1g/L) 500mL를 넣고 혼합하였다. In a 2000 mL beaker, 123.4074 g of aluminum sulfate-18 hydrate (Al 2 (SO 4 ) 3 18H 2 O) and 500 mL of PB (Prussian Blue) aqueous solution (1 g/L) were added and mixed.
4M NaOH를 400mL 준비하여 혼합액에 5~10mL씩 넣어주면서 중화시킨다. 이때, 첨가할 때 마다 30초 이상 저어주며 pH미터를 확인하며 pH 판독 값이 안정되었을 때 추가로 중화를 진행하였다. Prepare 400mL of 4M NaOH and neutralize by adding 5~10mL at a time to the mixture. At this time, each time it was added, it was stirred for more than 30 seconds, the pH meter was checked, and additional neutralization was performed when the pH reading was stable.
용액의 pH가 5.0을 초과하기 시작하면 1mL 피펫을 이용하여 pH가 7.0이 될 때까지 서서히 중화시키고, pH가 7.0±0.1에 도달하면 중성화를 중단하고, 1000mL짜리 플라스틱 광구병에 용액을 옮기고 정제수를 넣어 1000mL가 되도록 한다.When the pH of the solution begins to exceed 5.0, gradually neutralize it using a 1mL pipette until the pH reaches 7.0. When the pH reaches 7.0±0.1, neutralization is stopped. Transfer the solution to a 1000mL plastic wide-mouth bottle and add purified water. Add to make 1000 mL.
플라스틱 광구병 마개를 꼭 잠근 후 110℃ 오븐에 넣은 후 24시간 동안 가열하고, 가열 종료 후 실온까지 식힌 후 사용하였다.After tightly closing the cap of the plastic wide-mouth bottle, it was placed in an oven at 110°C and heated for 24 hours. After heating, it was cooled to room temperature before use.
2. 황산알루미늄과 PB의 혼합중량비에 따른 NOM, Cs의 흡착제거율 평가2. Evaluation of adsorption and removal rates of NOM and Cs according to the mixing weight ratio of aluminum sulfate and PB
흡착은 60분간 진행되었고, 시료는 낙동강 지표수 100mL를 사용하였다. Adsorption was carried out for 60 minutes, and 100 mL of Nakdong River surface water was used as the sample.
하기의 표 1은 NOM(천연유기물질) 흡착제거율이고, 표 2는 Cs(세슘) 흡착제거율이다. Table 1 below shows the NOM (natural organic matter) adsorption and removal rates, and Table 2 shows the Cs (cesium) adsorption and removal rates.
(ppm)Al 2 (SO 4 ) 3 : PB mixing ratio
(ppm)
(ppm)Initial concentration (C 0 )
(ppm)
(ppm)Concentration after adsorption (C)
(ppm)
(ppm)Al 2 (SO 4 ) 3 : PB mixing ratio
(ppm)
(ppb)Initial concentration (C 0 )
(ppb)
(ppb)Concentration after adsorption (C)
(ppb)
도 1은 황산알루미늄(Al2(SO4)3)과 프러시안블루(PB)의 혼합중량비에 따른 NOM, Cs 흡착제거율을 보여준다.Figure 1 shows the NOM and Cs adsorption and removal rates according to the mixing weight ratio of aluminum sulfate (Al 2 (SO 4 ) 3 ) and Prussian blue (PB).
황산알루미늄의 농도는 10ppm으로 고정하고, PB의 혼합비가 높아질수록 NOM의 제거율은 큰 차이가 없지만, Cs의 제거율이 증가하는 경향을 보였다. 이에 황산알루미늄와 PB의 혼합 중량비를 10:10(=1:1)으로 하는 것이 적합하다고 판단되었다. The concentration of aluminum sulfate was fixed at 10ppm, and as the mixing ratio of PB increased, there was no significant difference in the removal rate of NOM, but the removal rate of Cs tended to increase. Accordingly, it was judged appropriate to set the mixing weight ratio of aluminum sulfate and PB to 10:10 (=1:1).
3. 황산알루미늄과 PB의 혼합중량비별 증류수(Deionized water), 수돗물(Tap water), 지표수(Surface water)에서 NOM, Cs의 흡착제거율 평가3. Evaluation of adsorption and removal rates of NOM and Cs in distilled water, tap water, and surface water by mixing weight ratio of aluminum sulfate and PB
증류수의 경우 유기물이 존재하지 않았으며, 증류수와 수돗물의 초기 Cs농도는 Cesium standard solution을 이용하여 지표수와 비슷하게 제조한 후 진행하였고, 흡착은 60분간 진행되었다. In the case of distilled water, there were no organic substances, and the initial Cs concentration of distilled water and tap water was prepared similar to surface water using Cesium standard solution, and adsorption was carried out for 60 minutes.
하기의 표 3은 증류수에서 Cs 흡착제거율, 표 4는 수돗물에서 NOM 흡착제거율, 표 5는 수돗물에서 Cs 흡착제거율, 표 6은 낙동강 지표수에서 NOM 흡착제거율, 표 7은 낙동강 지표수에서 Cs 흡착제거율이다. Table 3 below shows the Cs adsorption and removal rate in distilled water, Table 4 shows the NOM adsorption and removal rate in tap water, Table 5 shows the Cs adsorption and removal rate in tap water, Table 6 shows the NOM adsorption and removal rate in Nakdong River surface water, and Table 7 shows the Cs adsorption and removal rate in Nakdong River surface water.
(ppm)Al 2 (SO 4 ) 3 : PB mixing ratio
(ppm)
(ppb)Initial concentration (C 0 )
(ppb)
(ppb)Concentration after adsorption (C)
(ppb)
(ppm)Al 2 (SO 4 ) 3 : PB mixing ratio
(ppm)
(ppm)Initial concentration (C 0 )
(ppm)
(ppm)Concentration after adsorption (C)
(ppm)
(ppm)Al 2 (SO 4 ) 3 : PB mixing ratio
(ppm)
(ppb)Initial concentration (C 0 )
(ppb)
(ppb)Concentration after adsorption (C)
(ppb)
(ppm)Al 2 (SO 4 ) 3 : PB mixing ratio
(ppm)
(ppm)Initial concentration (C 0 )
(ppm)
(ppm)Concentration after adsorption (C)
(ppm)
(ppm)Al 2 (SO 4 ) 3 : PB mixing ratio
(ppm)
(ppb)Initial concentration (C 0 )
(ppb)
(ppb)Concentration after adsorption (C)
(ppb)
도 2는 황산알루미늄과 PB의 혼합중량비별 증류수(Deionized water), 수돗물(Tap water), 낙동강 지표수(Surface water)에서 NOM, Cs의 흡착제거율을 보여주는 것으로, 도 2(A)는 NOM의 흡착제거율이고, 도 2(B)는 Cs의 흡착제거율이다. Figure 2 shows the adsorption and removal rates of NOM and Cs in distilled water, tap water, and Nakdong River surface water according to the mixing weight ratio of aluminum sulfate and PB. Figure 2(A) shows the adsorption and removal rates of NOM. , and Figure 2(B) shows the adsorption and removal rate of Cs.
황산알루미늄의 농도는 10ppm으로 고정하고 PB의 혼합비가 높아질수록 NOM의 제거율은 낮아지고, Cs의 제거율은 증가하는 경향을 보였다. NOM의 제거율 차이는 Cs의 제거율 차이에 비해 낮은 편이었다. 따라서 처리하고자 하는 시료의 Cs의 농도가 높은 경우 황산알루미늄과 PB의 혼합비를 10:10(=1:1)으로 하는 것이 적합하다고 판단하였다.The concentration of aluminum sulfate was fixed at 10ppm, and as the mixing ratio of PB increased, the removal rate of NOM decreased and the removal rate of Cs tended to increase. The difference in the removal rate of NOM was lower than that of Cs. Therefore, when the concentration of Cs in the sample to be treated is high, it was judged appropriate to set the mixing ratio of aluminum sulfate and PB to 10:10 (=1:1).
4. pH 변화에 따른 NOM ,Cs 흡착제거율 평가4. Evaluation of NOM and Cs adsorption and removal rates according to pH changes
흡착은 60분간 진행되었고, 시료는 낙동강 지표수 100mL를 사용하였다. Adsorption was carried out for 60 minutes, and 100 mL of Nakdong River surface water was used as the sample.
황산알루미늄과 PB를 1:1의 중량비로 혼합하여 제조된 흡착제로 흡착제거율 평가를 실시하였다. 하기의 표 8은 NOM 흡착제거율이고, 표 9는 Cs 흡착제거율이다. The adsorption removal rate was evaluated using an adsorbent prepared by mixing aluminum sulfate and PB at a weight ratio of 1:1. Table 8 below shows the NOM adsorption and removal rates, and Table 9 shows the Cs adsorption and removal rates.
(ppm)Initial concentration (C 0 )
(ppm)
(ppm)Concentration after adsorption (C)
(ppm)
(ppb)Initial concentration (C 0 )
(ppb)
(ppb)Concentration after adsorption (C)
(ppb)
도 3은 시료의 pH에 따른 NOM, Cs의 흡착제거율을 보여주는 것으로, pH가 높아질수록 Cs의 제거율은 높아지고 NOM의 제거율은 낮아지는 경향을 보였다. 하지만, pH가 6~7일 때 NOM의 제거율은 큰 영향을 받지 않으므로 pH가 6~7 범위인 원수에 적용하는 것이 적합하다고 판단하였다.Figure 3 shows the adsorption and removal rates of NOM and Cs according to the pH of the sample. As pH increases, the removal rate of Cs tends to increase and the removal rate of NOM tends to decrease. However, when the pH is 6 to 7, the removal rate of NOM is not significantly affected, so it was judged appropriate to apply it to raw water with a pH in the 6 to 7 range.
5. 흡착제 양에 따른 NOM, Cs 흡착제거율 평가5. Evaluation of NOM and Cs adsorption and removal rates according to the amount of adsorbent
흡착은 60분간 진행되었고, 시료는 낙동강 지표수 100mL를 사용하였다. Adsorption was carried out for 60 minutes, and 100 mL of Nakdong River surface water was used as the sample.
황산알루미늄과 PB를 1:1의 중량비로 혼합하여 제조된 흡착제로 흡착제 사용량에 따른 흡착제거율 평가를 실시하였다. 하기의 표 10은 NOM 흡착제거율이고, 표 11은 Cs 흡착제거율이다. The adsorption removal rate was evaluated according to the amount of adsorbent used with an adsorbent prepared by mixing aluminum sulfate and PB at a weight ratio of 1:1. Table 10 below shows the NOM adsorption and removal rates, and Table 11 shows the Cs adsorption and removal rates.
(ppm)Initial concentration (C 0 )
(ppm)
(ppm)Concentration after adsorption (C)
(ppm)
(ppb)Initial concentration (C 0 )
(ppb)
(ppb)Concentration after adsorption (C)
(ppb)
도 4는 흡착제의 사용량에 따른 NOM, Cs의 흡착제거율을 보여준다. Figure 4 shows the adsorption and removal rates of NOM and Cs according to the amount of adsorbent used.
그 결과, 전반적으로 흡착제의 사용량 증가할수록 Cs, NOM 의 제거율 모두 높아지는 경향을 보였다. 하지만 흡착제의 양이 10ppm 이상일 때 NOM 의 제거율은 큰 영향을 받지 않으므로 흡착하고자 하는 원수의 Cs 농도를 측정하여 흡착제의 양을 10~30ppm 사이로 결정하는 것이 적합하다고 판단하였다.As a result, overall, as the amount of adsorbent used increased, the removal rates of both Cs and NOM tended to increase. However, when the amount of adsorbent is more than 10ppm, the NOM removal rate is not significantly affected, so it was judged appropriate to measure the Cs concentration of the raw water to be adsorbed and determine the amount of adsorbent between 10 and 30ppm.
이상과 같이 본 발명은 첨부된 도면을 참조하여 바람직한 실시예를 중심으로 설명하였지만 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자가 본 발명의 특허청구범위에 기재된 기술적 사상 및 영역으로부터 벗어나지 않는 범위 내에서 본 발명을 다양하게 수정 또는 변형하여 실시할 수 있다. 따라서 본 발명의 범주는 이러한 많은 변형의 예들을 포함하도록 기술된 청구범위에 의해서 해석되어야 한다.As described above, the present invention has been described with a focus on preferred embodiments with reference to the accompanying drawings, but within the scope of those skilled in the art in the technical field to which the present invention pertains without departing from the technical spirit and scope described in the claims of the present invention. The present invention can be implemented with various modifications or modifications. Accordingly, the scope of the present invention should be construed by the appended claims to include examples of many such modifications.
Claims (4)
황산알루미늄과 프러시안블루 수용액을 혼합한 혼합액을 제조하는 혼합액 제조단계(S100);와
상기 혼합액의 pH를 제어하는 pH 제어단계(S200);와
pH가 제어된 혼합액을 가열하여 고형물의 흡착제를 수득하는 가열단계(S300);를 포함하는 것을 특징으로 하는
폐액 내 방사성오염물질과 유기물 동시제거가 가능한 흡착제의 제조방법.
In the manufacturing method of an adsorbent capable of simultaneously removing radioactive contaminants and organic substances in waste liquid,
A mixed solution manufacturing step (S100) of preparing a mixed solution of aluminum sulfate and an aqueous Prussian blue solution;
A pH control step (S200) of controlling the pH of the mixed solution; and
A heating step (S300) of heating the pH-controlled mixed solution to obtain a solid adsorbent.
A method of manufacturing an adsorbent capable of simultaneously removing radioactive contaminants and organic substances in waste fluid.
상기 혼합액 제조단계(S100)에서는
황산알루미늄과 프러시안블루 고형물의 혼합중량비가 1 : 0.5 내지 1 인 것을 특징으로 하는
폐액 내 방사성오염물질과 유기물 동시제거가 가능한 흡착제의 제조방법.
According to clause 1,
In the mixed solution manufacturing step (S100),
Characterized in that the mixing weight ratio of aluminum sulfate and Prussian blue solids is 1:0.5 to 1.
A method of manufacturing an adsorbent capable of simultaneously removing radioactive contaminants and organic substances in waste fluid.
An adsorbent capable of simultaneously removing radioactive pollutants and organic substances in waste liquid prepared by the production method of claim 1 or 2.
폐액의 pH를 6 내지 8로 제어하는 폐액 pH 조정단계;와
pH가 조정된 폐액에 흡착제를 투입하는 흡착제 투입단계;를 포함하는 것을 특징으로 하는
폐액 내 방사성오염물질과 유기물 동시제거가 가능한 흡착제를 이용한 폐액처리방법.
In the waste liquid treatment method using an adsorbent capable of simultaneously removing radioactive contaminants and organic substances in the waste liquid of paragraph 3,
A waste liquid pH adjustment step of controlling the pH of the waste liquid to 6 to 8;
Characterized by comprising: an adsorbent input step of adding an adsorbent to the pH-adjusted waste liquid;
A waste liquid treatment method using an adsorbent that can simultaneously remove radioactive contaminants and organic substances in waste liquid.
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