CN105642242A - Preparation of modified bamboo charcoal based on lead ion adsorption and application method thereof - Google Patents
Preparation of modified bamboo charcoal based on lead ion adsorption and application method thereof Download PDFInfo
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- CN105642242A CN105642242A CN201610008189.8A CN201610008189A CN105642242A CN 105642242 A CN105642242 A CN 105642242A CN 201610008189 A CN201610008189 A CN 201610008189A CN 105642242 A CN105642242 A CN 105642242A
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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
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
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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
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic 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
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/24—Naturally occurring macromolecular compounds, e.g. humic acids or their derivatives
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- 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
- C02F1/285—Treatment of water, waste water, or sewage by sorption using synthetic organic sorbents
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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
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/44—Materials comprising a mixture of organic materials
- B01J2220/445—Materials comprising a mixture of organic materials comprising a mixture of polymers
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- 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
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Inorganic Chemistry (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention relates to a modification method of bamboo charcoal capable of being applied to adsorption of lead ions. Modified bamboo charcoal is obtained by adding bamboo charcoal into a chitosan solution taking sodium alginate as a coupling agent, reacting and drying. The sodium alginate and chitosan are loaded on the bamboo charcoal, and -COO and N-H radicals are introduced, so that the adsorption capability on Pb of the bamboo charcoal is improved. Compared with direct utilization of the bamboo charcoal, the adsorption capability on the Pb of the bamboo charcoal can be improved; and compared with direct utilization of the chitosan, the adsorption capability is strong and the cost is relatively low. A static adsorption experiment shows that the adsorption amount on the lead by the bamboo charcoal in one hour is improved to 326.3 micrograms per gram from 181.4 micrograms per gram, and is improved by 79.9% when being compared with that before modification.
Description
Technical field
The invention belongs to the technical field of sewage disposal, especially relate to a kind of modification bamboo charcoal based on adsorpting lead ion and prepare and application process.
Background technology
Along with the quickening of process of industrialization, multiple industry as: the mining of iron and steel and non-ferrous metal and smelting industry, electroplating industry, lead battery production industry etc. all can to discharge plurality of heavy metal waste water in environment. And aquatile not only can be constituted a threat to by heavy metal ion in environment, and it can pass through the enrichment of food chain and food web in aquatic ecosystem, thus being accumulated to higher concentration, and the final life and health to the mankind causes direct or indirect harm. Meanwhile, heavy metal stable in properties, not easily it is biodegradable, therefore, the removal of the process of heavy metal-containing waste water especially lead is significant, receives extensive concern.
At present, domestic and international Treatment On The Wasterwater of Containing Heavy Metalions mainly has: 1) chemical method, including neutralization precipitation method, sulphide precipitation, electrochemical treatment and high molecular heavy metals trapping agent method etc.; 2) Physical, including solvent extraction, ion exchange, evaporation coagulation method, membrane separation process, absorption method etc.; 3) bio-flocculation process and phytoremediation. In these processing methods, chemical Treatment cost is high, secondary pollution easily caused by water body, the research of bio-flocculation process and phytoremediation is in the laboratory research stage mostly, absorption method, owing to having the advantages such as simple to operate, process capacity is big, heavy metal ion can be recycled, adsorbent can be recycled, receives significant attention; Especially when concentration of heavy metal ion is relatively low, heavy metal ion clearance and adsorption effect very good, so, absorption method is gathered around for the removal of heavy metal ions of low concentration and is had broad application prospects. What play a major role in absorption method is adsorbent. Applying maximum adsorbents at present is activated carbon, activated carbon is because of containing large number of orifices gap structure, activated carbon has bigger specific surface area simultaneously, it is possible to be greatly increased the contact of metal ion and adsorbent, so the heavy metal ion can effectively removed in waste water and organic pollution. But high-quality activated carbon is expensive, and regeneration efficiency is relatively low, these deficiencies limit the application of its heavy industrialization. Recent two decades comes, research worker is developed multiple adsorbent for heavy metal with low cost gradually and is replaced activated carbon, as zeolite, kaolinite, brown coal, industrial waste and natural plant material straw, Pericarppium arachidis hypogaeae, leaves, silt heavy metal adsorption effect.
There are abundant bamboo resource, bamboo grove area about 4,840,000 hectares, the cultivated area of annual bamboo wood about 12.6 ten thousand hectares in China. Present stage, bamboo is used for bamboo product and processes and produce substantial amounts of bamboo processing wastes. For making the recycling of the refuses such as bamboo wood leftover bits and pieces, the leftover bits and pieces high temperature pyrolysis of bamboo processing is made bamboo charcoal by people. It is big, with low cost that bamboo charcoal has specific surface area, has the potentiality as sorbent material. Simultaneously research worker to modifying solid waste to strengthen its adsorption effect, as orange peel is carried out chemical modification for Adsorption of Cu by Feng Ningchuan2+��Pb2+��Zn2+��Ni2+��Cd2+; Weng Yiming adopts Biformyl coupled action to prepare bamboo charcoal chitosan compound adsorbing agent and for processing sanitary sewage, and wherein turbidity, CODcr and ammonia nitrogen are had obvious treatment effect. Therefore carry out solid waste and material modified preparation thereof and applied research is significant.
Summary of the invention
The purpose of the present invention is not dealt carefully with after being contemplated to overcome above-mentioned existing adsorbent expensive, discarded and is provided a kind of effect stability and the with low cost bamboo charcoal modified method that can be applicable to heavy metal adsorption easily caused by secondary pollution, prepares modification bamboo charcoal and obtains novel adsorbent. There is provided a new way for the resource of bamboo processing wastes simultaneously.
The purpose of the present invention can be achieved through the following technical solutions:
Bamboo charcoal is joined in the acetic acid solution of chitosan, sodium alginate is adopted chitosan and bamboo charcoal to be bonded together, after after fully mixed, being dried by bamboo charcoal-sodium alginate-chitosan complex, crushing, sieve, prepare into modification bamboo charcoal, specifically adopt following steps:
1) bamboo charcoal is prepared: crushing commercially available bamboo charcoal and through 200 eye mesh screens, screening obtains the particle diameter bamboo charcoal less than 200 orders, adopts distilled water repeatedly to clean, and dries at 70 DEG C;
2) preparation of chitosan solution: the acetic acid solution 100mL of preparation mass fraction 1%, is added to 9g chitosan so that it is be completely dissolved;
3) preparation of bamboo charcoal-chitosan solution: be 1:9 according to the weight ratio of chitosan Yu bamboo charcoal, by 1) bamboo charcoal prepared joins 2) in solution, mix homogeneously.
4) preparation of sodium alginate aqueous solution: be dissolved in appropriate distilled water by sodium alginate, stirs and dissolves the sodium alginate aqueous solution 250mL of preparation 1%;
5) preparation of bamboo charcoal-sodium alginate-chitosan solution: by above-mentioned 3) with 4) solution mixes, and dropwise dropping 1mol/L hydrochloric acid, until pH=5;
6) dry modification bamboo charcoal: modification bamboo charcoal is dried in 70 DEG C of baking ovens to constant weight, pulverize, sieve and prepare into particle diameter less than 200 orders (particle diameter is less than 0.074mm) bamboo charcoal.
The particle diameter of described bamboo charcoal is below 200 orders.
Described bamboo charcoal-chitosan solution, adds 9g bamboo charcoal after 100mL1% acetic acid 1g chitosan and prepares into.
Described sodium alginate aqueous solution is that sodium alginate is configured to 1% solution 250mL.
Described bamboo charcoal-sodium alginate-chitosan solution is dropwise dropping hydrochloric acid when making pH value of solution=5, and stirs on magnetic stirring apparatus and be prepared from.
Described dry modification bamboo charcoal is to be dried in 70 DEG C of baking ovens by modification bamboo charcoal to constant weight, pulverizes, sieves and prepare into 200 orders (particle diameter 100nm) bamboo charcoal.
Compared with prior art, instant invention overcomes existing adsorbing material many employings surface physics adsorption, adsorbate easily comes off and expensive defect, has the advantage that
(1) macromolecular compound of the principle of chitin-sodium alginate method of modifying that the present invention adopts to be sodium alginate be a kind of high viscosity, can combine closely with chitosan, bamboo charcoal, have and be firmly combined with, the feature of difficult drop-off;
(2) material that the present invention obtains is to utilize carboxyl on material, amino and lead ion generation chemisorption to remove lead ion, and the absorbent charcoal material of routine is generation physisorption;
(3) bamboo charcoal of the present invention can be processed by bamboo or its garbage, wide material sources and cheap. The approach of the resource offer high added value for bamboo processing wastes is provided.
(4) modifying process uses sodium alginate, chitosan dosage are few, and biodegradability is good, it is to avoid the secondary pollution brought in modifying process.
Accompanying drawing explanation
Fig. 1 is the infrared spectrogram of original bamboo charcoal and modification bamboo charcoal of the present invention.
Fig. 2 is original bamboo charcoal and the modification bamboo charcoal of the present invention adsorption effect figure to lead.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Modification bamboo charcoal based on lead ion absorption, it is bamboo charcoal is joined in the acetic acid solution of chitosan, sodium alginate is adopted chitosan and bamboo charcoal to be bonded together, after fully mixed, after bamboo charcoal-sodium alginate-chitosan complex is dried, crushing, sieve, it is prepared from, specifically adopts following steps:
1) bamboo charcoal is prepared: crushing commercially available bamboo charcoal and through 200 eye mesh screens, screening obtains the particle diameter bamboo charcoal less than 200 orders, adopts distilled water repeatedly to clean, and dries at 70 DEG C;
2) preparation of chitosan solution: the acetic acid solution 100mL of preparation mass fraction 1%, is added to 9g chitosan so that it is be completely dissolved;
3) preparation of bamboo charcoal-chitosan solution: be 1:9 ratio according to the weight ratio of chitosan Yu bamboo charcoal, by 1) bamboo charcoal prepared joins 2) in solution, mix homogeneously.
4) preparation of sodium alginate aqueous solution: be dissolved in appropriate distilled water by sodium alginate, stirs and dissolves the sodium alginate aqueous solution 250mL of preparation 1%;
5) preparation of bamboo charcoal-sodium alginate-chitosan solution: by above-mentioned 3) with 4) solution mixes, and dropwise dropping 1mol/L hydrochloric acid, until pH=5;
6) dry modification bamboo charcoal: modification bamboo charcoal is dried in 70 DEG C of baking ovens to constant weight, pulverize, sieve and prepare into 200 orders (particle diameter 0.074mm) bamboo charcoal. As shown in Figure 1 and Figure 2, instant invention overcomes existing adsorbing material many employings surface physics adsorption, caducous defect is held in adsorbate, adds OH-(3463��3362cm on bamboo charcoal surface-1), NH-(1500��1650cm-1), COO-(1418cm-1) chemical functional group improves the bamboo charcoal absorbability to lead ion.
Embodiments of the present invention are illustrated by embodiment in detail below. In embodiment, the adsorption effect of lead ion is measured by modified bamboo charcoal in accordance with the following methods:
1) leaded ion water sample is prepared
Leaded ion water sample is the dilution of lead standard solution (C=1000 �� g/mL) ultra-pure water to be formed, and after dilution, the plumbum ion concentration of water sample is 5mg/L.
2) modification bamboo charcoal adsorbs leaded ion water sample
0.5g bamboo charcoal joins 50mL according to 1) in the water sample prepared of method, implement water-bath concussion and carry out adsorption test, take conical flask bottom solution every 1h, obtain filtered solution with 0.22 ��m of membrane filtration, with plumbum ion concentration in solution before and after plasma emission spectrometer (ICP) test absorption.
Embodiment 1
A kind of modification bamboo charcoal based on adsorpting lead ion is prepared and application process, specifically adopts following steps:
1) adopting pulverizer to crush commercially available bamboo charcoal and through 200 eye mesh screens, screening obtains the particle diameter bamboo charcoal less than 200 orders, adopts distilled water repeatedly to clean, and dries at 70 DEG C;
2) prepare the acetic acid solution 100mL of mass fraction 1%, be added to 1g chitosan so that it is be completely dissolved;
3) according to the weight ratio 1:9 ratio of chitosan Yu bamboo charcoal, by 1) bamboo charcoal prepared joins 2) in solution, mix homogeneously, prepare into bamboo charcoal chitosan solution.
4) sodium alginate is dissolved in appropriate distilled water, stirs and dissolve the sodium alginate aqueous solution 250mL of preparation 1%;
5) by above-mentioned 3) with 4) solution mixes, and dropwise dropping 1mol/L hydrochloric acid, until pH=5;
6) modification bamboo charcoal is dried in 70 DEG C of baking ovens to constant weight, pulverize, sieve and prepare into 200 orders (particle diameter 100nm) bamboo charcoal.
Embodiment 2
A kind of modification bamboo charcoal based on adsorpting lead ion is prepared and application process, specifically adopts following steps:
1) adopting pulverizer to crush commercially available bamboo charcoal and through 200 eye mesh screens, screening obtains the particle diameter bamboo charcoal less than 200 orders, adopts distilled water repeatedly to clean, and dries at 70 DEG C;
2) prepare the acetic acid solution 100mL of mass fraction 1%, be added to 1g chitosan so that it is be completely dissolved;
3) according to the weight ratio 1:9 ratio of chitosan Yu bamboo charcoal, by 1) bamboo charcoal prepared joins 2) in solution, mix homogeneously, prepare into bamboo charcoal chitosan solution.
4) sodium alginate is dissolved in appropriate distilled water, stirs and dissolve the sodium alginate aqueous solution 250mL of preparation 0.5%;
5) by above-mentioned 3) with 4) solution mixes, and dropwise dropping 1mol/L hydrochloric acid, until pH=5;
6) modification bamboo charcoal is dried in 70 DEG C of baking ovens to constant weight, pulverize, sieve and prepare into 200 orders (particle diameter 100nm) bamboo charcoal.
Embodiment 3
A kind of modification bamboo charcoal based on adsorpting lead ion is prepared and application process, specifically adopts following steps:
1) adopting pulverizer to crush commercially available bamboo charcoal and through 200 eye mesh screens, screening obtains the particle diameter bamboo charcoal less than 200 orders, adopts distilled water repeatedly to clean, and dries at 70 DEG C;
2) prepare the acetic acid solution 100mL of mass fraction 1%, be added to 1g chitosan so that it is be completely dissolved;
3) according to the weight ratio 2:9 ratio of chitosan Yu bamboo charcoal, by 1) bamboo charcoal prepared joins 2) in solution, mix homogeneously, prepare into bamboo charcoal chitosan solution.
4) sodium alginate is dissolved in appropriate distilled water, stirs and dissolve the sodium alginate aqueous solution 250mL of preparation 1%;
5) by above-mentioned 3) with 4) solution mixes, and dropwise dropping 1mol/L hydrochloric acid, until pH=5;
6) modification bamboo charcoal is dried in 70 DEG C of baking ovens to constant weight, pulverize, sieve and prepare into particle diameter less than 200 orders (particle diameter is less than 0.074mm) bamboo charcoal.
The above-mentioned description to embodiment is to be understood that for ease of those skilled in the art and apply the present invention. These embodiments obviously easily can be made various amendment by person skilled in the art, and General Principle described herein is applied in other embodiments without through performing creative labour. Therefore, the invention is not restricted to embodiment here, those skilled in the art's announcement according to the present invention, the improvement made without departing from scope and amendment all should within protection scope of the present invention.
Claims (7)
1. the preparation method based on the modification bamboo charcoal of adsorpting lead ion, it is characterized in that, bamboo charcoal is joined in the acetic acid solution of chitosan by the method, sodium alginate is adopted chitosan and bamboo charcoal to be bonded together, after fully mixed, after bamboo charcoal-sodium alginate-chitosan complex is dried, crushing, sieve, prepare into modification bamboo charcoal, specifically comprise the following steps that
1) bamboo charcoal is prepared: crushing commercially available bamboo charcoal and through 200 eye mesh screens, screening obtains the particle diameter bamboo charcoal less than 200 orders, adopts distilled water repeatedly to clean, and dries at 70 DEG C;
2) preparation of chitosan solution: the acetic acid solution 100mL of preparation mass fraction 1%, is added to 9g chitosan so that it is be completely dissolved;
3) preparation of bamboo charcoal-chitosan solution: be 1:9 according to the weight ratio of chitosan Yu bamboo charcoal, by 1) bamboo charcoal prepared joins 2) in solution, mix homogeneously;
4) preparation of sodium alginate aqueous solution: be dissolved in appropriate distilled water by sodium alginate, stirs and dissolves the sodium alginate aqueous solution 250mL of preparation 1%;
5) preparation of bamboo charcoal-sodium alginate-chitosan solution: by above-mentioned 3) with 4) solution mixes, and dropwise dropping 1mol/L hydrochloric acid, until pH=5;
6) dry modification bamboo charcoal: modification bamboo charcoal is dried in 70 DEG C of baking ovens to constant weight, pulverize, sieve and prepare into less than 200 order bamboo charcoals.
2. the preparation method of a kind of modification bamboo charcoal based on adsorpting lead ion according to claim 1, it is characterised in that described chitosan is deacetylation is 80.0%��95.0%.
3. the preparation method of a kind of modification bamboo charcoal based on adsorpting lead ion according to claim 2, it is characterised in that the quality of acetic acid mark of described chitosan acetic acid solution is 1% ~ 6%.
4. the weight ratio of the preparation method of a kind of modification bamboo charcoal based on adsorpting lead ion according to claim 2, it is characterised in that in described bamboo charcoal-chitosan solution, chitosan and bamboo charcoal is 1:9.
5. the preparation method of a kind of modification bamboo charcoal based on adsorpting lead ion according to claim 2, it is characterised in that in sodium alginate aqueous solution, the mass fraction of sodium alginate is 0.5% ~ 1%.
6. the preparation method of a kind of modification bamboo charcoal based on adsorpting lead ion according to claim 2, it is characterized in that the preparation process of bamboo charcoal-sodium alginate-chitosan solution, dropping 1mol/L acetic acid promotes bamboo charcoal-chitosan solution to mix with sodium alginate soln, until pH is 5 ~ 7.
7. a kind of bamboo charcoal modified method based on adsorpting lead ion according to claim 2, it is characterised in that the temperature of dry modification bamboo charcoal is 60 ~ 70 DEG C, and dried bamboo charcoal of milling, after sieving, its particle size distribution range is less than 200 orders.
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| CN201610008189.8A CN105642242A (en) | 2016-01-07 | 2016-01-07 | Preparation of modified bamboo charcoal based on lead ion adsorption and application method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106186441A (en) * | 2016-08-30 | 2016-12-07 | 郜杰 | A kind of processing method of heavy metal-containing waste water |
| CN111320347A (en) * | 2020-03-16 | 2020-06-23 | 武夷学院 | Treatment method of secondary sedimentation tank sludge of domestic sewage plant |
| CN112569908A (en) * | 2020-12-24 | 2021-03-30 | 镇江市和云工业废水处置有限公司 | Preparation method of adsorbent for heavy metal wastewater treatment |
| CN113788509A (en) * | 2021-09-10 | 2021-12-14 | 陆挺 | Water treatment chitosan mixture and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106186441A (en) * | 2016-08-30 | 2016-12-07 | 郜杰 | A kind of processing method of heavy metal-containing waste water |
| CN111320347A (en) * | 2020-03-16 | 2020-06-23 | 武夷学院 | Treatment method of secondary sedimentation tank sludge of domestic sewage plant |
| CN112569908A (en) * | 2020-12-24 | 2021-03-30 | 镇江市和云工业废水处置有限公司 | Preparation method of adsorbent for heavy metal wastewater treatment |
| CN113788509A (en) * | 2021-09-10 | 2021-12-14 | 陆挺 | Water treatment chitosan mixture and preparation method thereof |
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