NL2032796B1 - CATALYTIC AND ADSORPTIVE MATERIALS PREPARED BY FERRO (Fe)-MANGANESE (Mn)-RICH PELAGIC CLAY AND METHOD THEREOF - Google Patents
CATALYTIC AND ADSORPTIVE MATERIALS PREPARED BY FERRO (Fe)-MANGANESE (Mn)-RICH PELAGIC CLAY AND METHOD THEREOF Download PDFInfo
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- NL2032796B1 NL2032796B1 NL2032796A NL2032796A NL2032796B1 NL 2032796 B1 NL2032796 B1 NL 2032796B1 NL 2032796 A NL2032796 A NL 2032796A NL 2032796 A NL2032796 A NL 2032796A NL 2032796 B1 NL2032796 B1 NL 2032796B1
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- 239000004927 clay Substances 0.000 title claims abstract description 40
- 230000003197 catalytic effect Effects 0.000 title claims abstract description 13
- 239000000463 material Substances 0.000 title claims abstract description 13
- 230000000274 adsorptive effect Effects 0.000 title claims abstract description 9
- 239000011572 manganese Substances 0.000 title abstract description 14
- 229910052748 manganese Inorganic materials 0.000 title abstract description 8
- 238000000034 method Methods 0.000 title abstract description 7
- 229910001868 water Inorganic materials 0.000 claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000003054 catalyst Substances 0.000 claims abstract description 14
- 239000000203 mixture Substances 0.000 claims abstract description 5
- 239000000126 substance Substances 0.000 claims abstract description 4
- 229910002551 Fe-Mn Inorganic materials 0.000 claims description 23
- 230000015556 catabolic process Effects 0.000 claims description 18
- 238000006731 degradation reaction Methods 0.000 claims description 18
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 9
- PYWVYCXTNDRMGF-UHFFFAOYSA-N rhodamine B Chemical compound [Cl-].C=12C=CC(=[N+](CC)CC)C=C2OC2=CC(N(CC)CC)=CC=C2C=1C1=CC=CC=C1C(O)=O PYWVYCXTNDRMGF-UHFFFAOYSA-N 0.000 claims 3
- 229940043267 rhodamine b Drugs 0.000 claims 3
- 229910004742 Na2 O Inorganic materials 0.000 claims 1
- 229910052909 inorganic silicate Inorganic materials 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 11
- 230000007613 environmental effect Effects 0.000 abstract description 5
- 229910052742 iron Inorganic materials 0.000 abstract description 5
- 238000006555 catalytic reaction Methods 0.000 abstract description 4
- 238000000746 purification Methods 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 abstract 1
- 238000005067 remediation Methods 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 22
- 238000002835 absorbance Methods 0.000 description 19
- 239000000243 solution Substances 0.000 description 15
- 238000005516 engineering process Methods 0.000 description 10
- 239000011521 glass Substances 0.000 description 7
- 229910000278 bentonite Inorganic materials 0.000 description 6
- 239000000440 bentonite Substances 0.000 description 6
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 6
- 239000002131 composite material Substances 0.000 description 5
- 239000000975 dye Substances 0.000 description 5
- 239000007864 aqueous solution Substances 0.000 description 4
- 239000008367 deionised water Substances 0.000 description 4
- 229910021641 deionized water Inorganic materials 0.000 description 4
- 239000003344 environmental pollutant Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
- 239000010453 quartz Substances 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 238000000870 ultraviolet spectroscopy Methods 0.000 description 4
- 229960000892 attapulgite Drugs 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000000975 co-precipitation Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910052625 palygorskite Inorganic materials 0.000 description 3
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 description 2
- 239000004098 Tetracycline Substances 0.000 description 2
- 239000000149 chemical water pollutant Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 2
- 229910052900 illite Inorganic materials 0.000 description 2
- 229910052901 montmorillonite Inorganic materials 0.000 description 2
- VGIBGUSAECPPNB-UHFFFAOYSA-L nonaaluminum;magnesium;tripotassium;1,3-dioxido-2,4,5-trioxa-1,3-disilabicyclo[1.1.1]pentane;iron(2+);oxygen(2-);fluoride;hydroxide Chemical compound [OH-].[O-2].[O-2].[O-2].[O-2].[O-2].[F-].[Mg+2].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[K+].[K+].[K+].[Fe+2].O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2 VGIBGUSAECPPNB-UHFFFAOYSA-L 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000003642 reactive oxygen metabolite Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 229960002180 tetracycline Drugs 0.000 description 2
- 229930101283 tetracycline Natural products 0.000 description 2
- 235000019364 tetracycline Nutrition 0.000 description 2
- 150000003522 tetracyclines Chemical class 0.000 description 2
- 229910021532 Calcite Inorganic materials 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- HPTYUNKZVDYXLP-UHFFFAOYSA-N aluminum;trihydroxy(trihydroxysilyloxy)silane;hydrate Chemical compound O.[Al].[Al].O[Si](O)(O)O[Si](O)(O)O HPTYUNKZVDYXLP-UHFFFAOYSA-N 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000002734 clay mineral Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004042 decolorization Methods 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000010433 feldspar Substances 0.000 description 1
- 229910052621 halloysite Inorganic materials 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 150000002506 iron compounds Chemical class 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 229910052622 kaolinite Inorganic materials 0.000 description 1
- 238000005374 membrane filtration Methods 0.000 description 1
- STZCRXQWRGQSJD-GEEYTBSJSA-M methyl orange Chemical compound [Na+].C1=CC(N(C)C)=CC=C1\N=N\C1=CC=C(S([O-])(=O)=O)C=C1 STZCRXQWRGQSJD-GEEYTBSJSA-M 0.000 description 1
- 229940012189 methyl orange Drugs 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- JRKICGRDRMAZLK-UHFFFAOYSA-L peroxydisulfate Chemical compound [O-]S(=O)(=O)OOS([O-])(=O)=O JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 description 1
- 238000007146 photocatalysis Methods 0.000 description 1
- 230000001699 photocatalysis Effects 0.000 description 1
- 238000013033 photocatalytic degradation reaction Methods 0.000 description 1
- 239000006069 physical mixture Substances 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000004729 solvothermal method Methods 0.000 description 1
- 230000007847 structural defect Effects 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Classifications
-
- 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
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
-
- 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
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/16—Alumino-silicates
- B01J20/18—Synthetic zeolitic molecular sieves
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B39/00—Compounds having molecular sieve and base-exchange properties, e.g. crystalline zeolites; Their preparation; After-treatment, e.g. ion-exchange or dealumination
- C01B39/02—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof; Direct preparation thereof; Preparation thereof starting from a reaction mixture containing a crystalline zeolite of another type, or from preformed reactants; After-treatment thereof
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/308—Dyes; Colorants; Fluorescent agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
- C02F2305/026—Fenton's reagent
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Water Supply & Treatment (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Analytical Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Catalysts (AREA)
Abstract
A catalytic and adsorptive material prepared by a ferro (Fe)-manganese (Mn)-rich pelagic clay and a method thereof are provided. The catalytic and adsorptive material with clay as a main body is designed directed to the chemical composition and structural characteristics of the pelagic clay. For the pelagic clay with relatively high content of Fe and Mn, Fe and Mn exist in clay in a state of amorphous microconcretion. Moreover, Fe and Mn in the pelagic clay can be used as a micromotor for Fenton catalytic reaction under specific conditions to dissolve organic matters, thereby being capable of being used as a Fenton catalyst for water purification. In this present invention, pelagic clay with huge amount of resource reserves in the world ocean is used as raw materials to be prepared into a catalytic material for environmental remediation, which is of innovative significance.
Description
CATALYTIC AND ADSORPTIVE MATERIALS PREPARED BY FERRO
(Fe)-MANGANESE (Mn)-RICH PELAGIC CLAY AND METHOD THEREOF
[01] The present invention relates to the technology for preparing a catalytic and adsorptive material by a ferro (Fe)-manganese (Mn)-rich pelagic clay and an application thereof. Directed to the composition and structural characteristics of pelagic clay, a Fenton catalyst with clay as a main body and with Fe-Mn microconcretion as a micromotor is designed and prepared as an environmental repairing material for sewage purification treatment.
[02] Fe-Mn-rich pelagic clay sediments mainly consist of mixed illite (I) montmorillonite (M) layer minerals (VM), which contains a small amount of feldspar, quartz, kaolinite, calcite, and the like, and meanwhile contains amorphous
Fe-Mn microconcretion. These substances coexist in a relatively uniform physical mixture. Special marine environment enables pelagic clay to be featured by unique composition and structural characteristics compared with earth's surface clay, such as tine particles, poor crystallinity, more structural defects, large specific surface area, high content of Fe and Mn. The Fe-Mn-rich pelagic clay sample related in the present invention includes the following chemical composition: 1.52 wt% KO, 7.37 wt%
Na20, 9.87 wt% CaO, 9.67 wt% Al:0s, 30.56 wt% SiO, 21.68 wt% Fe Oz and 6.17 wt% MnO. Fe element mainly exists in a valence state of Fe (III) and contains a small amount of Fe (II) valence state, while Mn element mainly exists in a valence state of
Mn (IV). These Fe-Mn compounds are partly contributed by symbiotic Fe-Mn concretion and are partly derived from structural ions in clay mineral lattices.
[03] In recent years, water pollution caused by organic dyestuff and other compounds has been increasingly serious. In the face of such an environmental problem, adsorption technologies, membrane filtration technologies, biotreatment technologies, photocatalytic degradation technologies and advanced oxidation technologies including Fenton catalysis have been developed successively. Due to the features such as, low cost, availability, excellent treatment effects on pollutants, environmental friendliness and low energy consumption in experimental process, clay and composite clay-based catalytic or adsorptive materials have been widely applied in many fields such as, Fenton catalysis, photocatalysis and adsorption. Fenton catalysis is an advanced oxidation technology. The technology uses Fe (II) or Fe (III) to catalyze hydroxyl radicals (-OH) generated by H20:2 and other reactive oxygen species (ROS), thereby oxidizing organic dyestuff and other pollutants into small molecules such as,
CO; and H:0O. At present, researchers have been mainly focused on iron compounds/composite heterogeneous clay Fenton catalysts or Fenton-like catalysts; for example, in the "Construction of Multiphase Magnetic Bentonite Fenton System and its Application Research", Ma Jianchao, Chang Jiali, Zhang Duoduo, Zhao
Xiaodong, Ma Hongzhu, Xiao Yuqiang, Ma Qingliang, Journal of Taiyuan University of Technology, 2015, 46: 399-404, Fe3O,/bentonite has been prepared as a Fenton catalyst by a coprecipitation method to degrade methyl orange, and the maximum decolorization rate is up to 96.72%. In the "Study on the Catalytic Degradation of
Coking Wastewater by Carbon-Pillared Magnetic Bentonite", Xiao Yuqiang, Zhang
Qingfang, Qiao Chen, Ma Qingliang and Ma Jianchao, Coal Technology, 2017, 36: 280-282, a composite carbon-pillared magnetic bentonite water treatment agent has been prepared by a solvothermal method, and the maximum Fenton degradation rate on phenol is up to 95.59%. In the paper of "Multiphase Fenton-Like Treatment of Aged
Landfill Leachate by Zirconium-Pillared Bentonite Loaded Nano-Fe;04", Ma Cui, Liu
Yaqi, Zhang Hanxu, Yuan Pengfei and He Zhengguang, Journal of Huagiao University (natural science edition), 2018, 39: 844-850, a Fe304/zirconium-pillared bentonite catalyst has been prepared by a coprecipitation method, achieving good treatment effects on aged landfill leachate. In the paper of "Degradation of Tetracycline by
Catalyzing Persulfate by Composite ATP@Fe;O0s Materials", Ma Qianqian, Wu
Tianwei, Zhao Mingyue, Hou Jianhua, Wang Shengsen, Feng Ke and Wang Xiaozhi,
Chinese Journal of Environmental Engineering, 2020, 14: 2463-2473, a
Fe30/attapulgite (ATP) Fenton-like catalyst has been prepared by a coprecipitation method, and the maximum degradation rate on tetracycline is up to 98.75%. Currently, most of the Fenton catalysts for the degradation of organic dyestuff and other pollutants in water are synthetic iron-containing composite materials, but there is no study on Fenton catalyzation by means of natural Fe-Mn-rich clay, especially pelagic clay.
[04] IL A Fenton catalytic material prepared by a Fe-Mn-rich pelagic clay
[05] 1. As a Fenton catalyst and a micromotor for the degradation of RhB dyes in water, the Fe-Mn-rich pelagic clay #1 is utilized in this present invention to exhibit spiral, circular, random and other various motion trails in a H2O; solution, and the
Fe-Mn-rich pelagic clay #1 can completely remove the RhB (10 mg/L) within 60 min.
[06] 2. To achieve the effect in 1, the following conditions need to be taken.
Fe-Mn-rich pelagic clay: 0.1 g/L, oxidizing agent H20:: 0.5 wt%, surfactant sodium dodecyl sulfate (SDS): 0.5 wt%, targeted pollutant RhB: 10 mg/L, reaction pH value: 2, and reaction temperature: 60°C.
[07] Beneficial effects
[08] 1. The present invention makes use of pelagic clay extensively existing in the world ocean as resources to expand the quantity of resources, which is of great significance.
[09] 2. Pelagic clay #1 rich in Fe-Mn-rich oxides 1s directly used as a Fenton catalyst and a micromotor for the degradation of RhB dyes in water, which exhibits excellent Fenton catalytic properties and self-driving capability in the presence of
H:0:, capable of degrading 10 mg/L RhB completely within 60 min. The pelagic clay of the present invention is superior to all kinds of high-quality terrestrial clays such as, halloysite, illite, montmorillonite and black cotton soil.
[10] The objective of the present invention is achieved by the following technical solutions:
[11] 1. Observation of self-driving behaviors of the Fe-Mn-rich pelagic clay in
HzO» solution: different concentrations (0.1 wt%, 0.2 wt%, 0.3 wt%, 0.5 wt% and 1 wt%) of H;0: solutions were prepared, and 0.5 wt% SDS was respectively added to the H:O: solutions and fully dissolved. During the observation, 2-3 drops of H:0: solution were evenly coated on a glass slide firstly with a dropper to form a thin liquid layer, then a little amount of #1 was dipped and added to the liquid layer by a capillary tube; and then a stereoscopic microscope was combined with Tpcapture software to photograph the movement situations of the Fe-Mn-rich pelagic clay in different concentrations of H20: solutions.
[12] 2. Fenton degradation experiment: 11.11 mg/L RhB aqueous solution was prepared, and 18 mL was taken and placed into a 20 mL glass bottle with a cap, then 2 mL (total amount) of H20: (30 wt%) and deionized water were added; 0.5 mol/L HCI solution was used to regulate the pH value; then the bottle cap was fastened down, and the bottle was shaken up and then placed into an electric-heated thermostatic water bath at 60 °C; after the liquid temperature in the bottle risen to 60 °C; an ultraviolet-visible spectrophotometer was used to measure the absorbance curve within the range of 700-400 nm, and then the absorbance value at 554 nm was recorded as the initial absorbance CO. Afterwards, 0.1 g SDS and 0.0020 g Fe-Mn-rich pelagic clay were added to the solution, and the bottle cap was tightened and the bottle was continuously placed into a water bath for heating; 3 mL liquid was taken every 5 min to measure the absorbance curve, and the absorbance Ct at 554 nm was recorded, and the liquid was quickly poured back at the end of the measurement, and the operation was performed until the end the degradation at 60 min. Degradation rate (n) of the pelagic clay on RhB at different time t during the reaction was calculated as follows:
[13] n(%)=100(C 0-C t)/C 0
[14] Example 1
[15] (1) 0.1 wt%, 0.2 wt%, 0.3 wt%, 0.5 wt% and 1 wt% H:0: solutions were prepared, and 0.5 wt% SDS was added respectively and stirred to be dissolved.
[16] (2) 2-3 drops of a concentration of H:O: solution were evenly coated on a glass slide to form a thin liquid layer, and a little amount of #1 was taken and added to 5 the liquid layer with a capillary tube, and then the glass slide was placed on an objective table of the stereoscopic microscope.
[17] (3) during the observation, the magnification times and focal length of the microscope were adjusted and combined with Tpcapture software to photograph the movement situations of the Fe-Mn micromotor of clay in different concentrations of
HO: solutions.
[18] Example 2
[19] (1) I8 mL of 11.11 mg/L RhB aqueous solution was taken and placed into a 20 mL glass bottle with a cap; then 0.60 mL H20: (30 wt%) and 1.40 mL deionized water were added, and 0.5 mol/L HCI solution was used to adjust pH value to 1, and the bottle cap was fastened down, and the bottle was shaken up and placed into an electric-heated thermostatic water bath at 60°C such that the liquid temperature in the bottle rose to 60°C.
[20] (2) 3 mL liquid was taken and placed into a quartz cuvette; an ultraviolet-visible spectrophotometer was used to measure the absorbance curve within the range of 700-400 nm, then the absorbance value at 554 nm was recorded as the initial absorbance CO, and the liquid was poured back to the bottle.
[21] (3) 0.1 g SDS and 0.0020 g catalyst #1 were added to the bottle, and the bottle cap was tightened and the bottle was continuously placed into the water bath for heating.
[22] (4) 3 mL liquid was taken every 5 min to measure the absorbance curve, and the absorbance C t at 554 nm was recorded, and the liquid was quickly poured back at the end of the measurement, and the operation was performed until the end the degradation at 60 min, thus calculating to obtain the degradation rate of #1 on RhB being 94.5%.
[23] Example 3
[24] (1) I8 mL of 11.11 mg/L RhB aqueous solution was taken and placed into a 20 mL glass bottle with a cap; then 0.60 mL H20: (30 wt%) and 1.40 mL deionized water were added, and 0.5 mol/L HCI solution was used to adjust pH value to 2, and the bottle cap was fastened down, and the bottle was shaken up and placed into an electric-heated thermostatic water bath at 60°C such that the liquid temperature in the bottle rose to 60°C.
[25] (2) 3 mL liquid was taken and placed into a quartz cuvette; an ultraviolet-visible spectrophotometer was used to measure the absorbance curve within the range of 700-400 nm, then the absorbance value at 554 nm was recorded as the initial absorbance CO, and the liquid was poured back to the bottle.
[26] (3) 0.1 g SDS and 0.0020 g catalyst #1 were added to the bottle, and the bottle cap was tightened and the bottle was continuously placed into the water bath for heating.
[27] (4) 3 mL liquid was taken every 5 min to measure the absorbance curve, and the absorbance C t at 554 nm was recorded, and the liquid was quickly poured back at the end of the measurement, and the operation was performed until the end the degradation at 60 min, thus calculating to obtain the degradation rate of #1 on RhB, being 100%.
[28] Example 4
[29] (1) 18 mL of 11.11 mg/L RhB aqueous solution was taken and placed into a 20 mL glass bottle with a cap; then 0.30 mL H20: (30 wt%) and 1.70 mL deionized water were added, and 0.5 mol/L HCI solution was used to adjust pH value to 2, and the bottle cap was fastened down, then the bottle was shaken up and placed into an electric-heated thermostatic water bath at 60°C such that the liquid temperature in the bottle rose to 60°C.
[30] (2) 3 mL liquid was taken and placed into a quartz cuvette; an ultraviolet-visible spectrophotometer was used to measure the absorbance curve within the range of 700-400 nm, then the absorbance value at 554 nm was recorded as the initial absorbance CO, and the liquid was poured back to the bottle.
[31] (3) 0.1 g SDS and 0.0020 g catalyst #1 were added to the bottle, and the bottle cap was tightened and the bottle was continuously placed into the water bath for heating,
[32] (4) 3 mL liquid was taken every 5 min to measure the absorbance curve, and the absorbance Ct at 554 nm was recorded, and the liquid was quickly poured back at the end of the measurement, and the operation was performed until the end the degradation at 60 min, thus calculating to obtain the degradation rate of #1 on RhB, being 100%.
Claims (3)
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