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Preparation method of biomass arsenic adsorbing material

An adsorption material and biomass technology, applied in chemical instruments and methods, adsorption water/sewage treatment, water/sludge/sewage treatment, etc., can solve problems such as difficulty in popularization and high cost

Active Publication Date: 2015-01-07
TAICANG BIQI NEW MATERIAL RES & DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, common adsorbents include iron-containing adsorbents, aluminum-containing adsorbents, etc., which have the advantages of large adsorption capacity and good arsenic removal effect, but are difficult to popularize due to high cost (Industrial Water and Wastewater, 2005, 36(6) , 35-38)

Method used

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  • Preparation method of biomass arsenic adsorbing material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Harvest the peanut vines, wash them with tap water, dry them, put the cleaned peanut vines in a grinder, and crush them into particles with a particle size of 20-60 mesh; mix the crushed peanut vines with yeast (specification: 200U / mg) and deionized water, stirred for 1 hour, placed at 20°C for 48 hours, filtered, and dried to obtain yeast-treated peanut vines; the weight ratio of yeast / peanut vines / deionized water was 1 / 1000 / 2000 The peanut vines treated with yeast were placed in the cyclodextrin aqueous solution for 60 minutes, taken out, filtered, placed in a drying oven, and dried at 20°C for 4 hours to obtain the biomass arsenic adsorption material; wherein, the mass of the cyclodextrin aqueous solution The concentration is 0.8%.

[0019] Put 0.2g of biomass arsenic adsorption material in 150mL of arsenic-containing wastewater, adjust the pH value of the solution to 5-6, and adsorb at 20°C for 6 hours. The concentration of arsenic ions in the wastewater is 50-1000...

Embodiment 2

[0022] Harvest the peanut vines, wash them with tap water, dry them, put the cleaned peanut vines in a grinder, and crush them into particles with a particle size of 20-60 mesh; mix the crushed peanut vines with yeast (specification: 200U / mg) and deionized water, stirred for 1 hour, placed at 40°C for 64 hours, filtered, and dried to obtain yeast-treated peanut vines; the weight ratio of yeast / peanut vines / deionized water was 1 / 1000 / 2000 The peanut vines treated with yeast were placed in the cyclodextrin aqueous solution for 90 minutes, taken out, filtered, placed in a drying oven, and dried at 40°C for 8 hours to obtain the biomass arsenic adsorption material; wherein, the mass of the cyclodextrin aqueous solution The concentration is 0.3%.

[0023] Put 0.2g of biomass arsenic adsorption material in 150mL of arsenic-containing wastewater, adjust the pH value of the solution to 5-6, and adsorb at 20°C for 6 hours. The concentration of arsenic ions in the wastewater is 50-1000...

Embodiment 3

[0026] Harvest the peanut vines, wash them with tap water, dry them, put the cleaned peanut vines in a grinder, and crush them into particles with a particle size of 20-60 mesh; mix the crushed peanut vines with yeast (specification: 200U / mg) and deionized water, stirred for 1 hour, placed at 30°C for 56 hours, filtered, and dried to obtain yeast-treated peanut vines; the weight ratio of yeast / peanut vines / deionized water was 1 / 1000 / 2000 The peanut vines treated with yeast were placed in the cyclodextrin aqueous solution for 70 minutes, taken out, filtered, placed in a drying oven, and dried at 30°C for 6 hours to obtain the biomass arsenic adsorption material; wherein, the mass of the cyclodextrin aqueous solution The concentration is 1.5%.

[0027] Put 0.2g of biomass arsenic adsorption material in 150mL of arsenic-containing wastewater, adjust the pH value of the solution to 5-6, and adsorb at 20°C for 6 hours. The concentration of arsenic ions in the wastewater is 50-1000...

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Abstract

The invention belongs to the field of water treatment material and relates to a preparation method of biomass arsenic adsorbing material. The preparation method provided by the invention is as follows: peanut vine containing protein is modified, and the specific process comprises peanut vine cleaning, smashing, saccharomycetes treatment, cyclodextrin composition and the like. The biomass arsenic adsorbing material prepared by the invention has the following advantages: (1), chemical treatment is not involved, and the manufacturing process is green and environment-friendly; (2), the prepared biomass arsenic adsorbing material is purely natural and degradable; (3), saccharomycetes and cyclodextrin are fully used for playing the effects of chelating and absorbing pentavalent arsenic ions, and the adsorbing capacity of the pentavalent arsenic ions is promoted to 156 mg / g, that is, each gram adsorbing material can absorb 156 mg pentavalent arsenic ions, which is 8.5 times of activated carbon. The biomass arsenic adsorbing material prepared by the invention can be used for treating waste water containing arsenic ions, can be used for a drinking water device, and has a wide market prospect.

Description

technical field [0001] The invention belongs to the technical field of water treatment materials, and in particular relates to a preparation method of a biomass arsenic adsorption material. Background technique [0002] The remediation of arsenic-contaminated groundwater has attracted extensive research and attention worldwide. At present, the removal methods of arsenic in drinking water mainly include coagulation, adsorption, ion exchange and membrane methods. Among them, the adsorption method has become the preferred method for removing arsenic in drinking water because of its simple method and reliable effect. At present, common adsorbents include iron-containing adsorbents, aluminum-containing adsorbents, etc., which have the advantages of large adsorption capacity and good arsenic removal effect, but are difficult to popularize due to high cost (Industrial Water and Wastewater, 2005, 36(6) , 35-38). my country is a large agricultural country, and most of the endemic ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/24B01J20/30C02F1/28C02F1/62
Inventor 蓝碧健
Owner TAICANG BIQI NEW MATERIAL RES & DEV