Preparation method of bio-char composite adsorbing material for removing phosphates in surface water

A composite adsorption material and bio-carbon technology, applied in water pollutants, chemical instruments and methods, adsorption water/sewage treatment, etc., can solve problems such as difficult operation, secondary pollution, and high operating costs, and achieve low cost and economical savings Cost, the effect of improving carbonization efficiency

Active Publication Date: 2017-02-15
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problems of high operating cost, difficult operation and secondary pollution in the existing technology for removing phosphate in water body, the present invention provides a preparation method of biological carbonaceous composite adsorptio

Method used

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  • Preparation method of bio-char composite adsorbing material for removing phosphates in surface water
  • Preparation method of bio-char composite adsorbing material for removing phosphates in surface water
  • Preparation method of bio-char composite adsorbing material for removing phosphates in surface water

Examples

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Effect test

Embodiment 1

[0040] The pomelo peel was washed, air-dried and cut, then heated and pyrolyzed in an anoxic environment in a muffle furnace at a temperature of 350°C and a pyrolysis time of 30 minutes. The pyrolyzed material was cooled and then added to 1.2mol / L FeSO 4 solution, shaken for 60 minutes. Filtrate and collect the carbonized biomass solids, add the cleaned carbonized biomass solids to 0.1mol / L Na 2 S 2 o 3 solution, shaken for 40 minutes. After the solid was collected by filtration, it was added to a CTMAB solution containing 0.03 mol / L, shaken for 50 minutes, filtered and washed with deionized water until neutral, and baked at 80° C. for 6 hours, which was the biological carbonaceous composite adsorption material 1.

Embodiment 2

[0042] The orange peels were washed, air-dried and cut, then heated and pyrolyzed in a muffle furnace in an oxygen-deficient environment with a pyrolysis temperature of 350°C and a pyrolysis time of 30 minutes. The pyrolyzed material was cooled and then added to 1.2mol / L FeSO 4 solution, shaken for 60 minutes. Filtrate and collect the carbonized biomass solids, add the cleaned carbonized biomass solids to 0.1mol / L Na 2 S 2 o 3 solution, shaken for 40 minutes. After the solid was collected by filtration, it was added to the CTMAB solution containing 0.03 mol / L, shaken for 50 minutes, filtered and washed with deionized water until neutral, and baked at 100°C for 5 hours, which was the biological carbonaceous composite adsorption material 2.

Embodiment 3

[0044] After washing and air-drying the grapefruit peels and orange peels, heat and pyrolyze them in an oxygen-free environment in a muffle furnace. The pyrolysis temperature is 450° C. and the pyrolysis time is 20 minutes. The material after pyrolysis is cooled, and the grapefruit peel and orange peel are mixed according to the mass ratio of 9:1, and then added to 1.5mol / L FeSO 4 solution, shaken for 60 minutes. Filter and collect carbonized biomass solids, add the cleaned carbonized biomass solids to 0.3mol / L Na 2 S 2 o 3 solution, shaken for 40 minutes. After the solid was collected by filtration, it was added to a 0.03 mol / L CTMAB solution, shaken for 50 minutes, filtered and washed with deionized water until neutral, and baked at 100° C. for 5 hours, which was the biological carbonaceous composite adsorption material 3 .

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Abstract

The invention discloses a preparation method of a bio-char composite adsorbing material for removing phosphates in surface water, and belongs to the field of bio-char adsorbing materials. The preparation method comprises the steps of (1), washing, air-drying and cutting shaddock peel and tangerine peel; (2) thermally decomposing, cooling and crushing the above particulate solid to obtain charred shaddock peel and charred tangerine peel; (3) modifying the thermally decomposed material respectively with ferrous sulfate, sodium thiosulfate and hexadecyl trimethyl ammonium bromide; (4) washing with deionized water, and drying to obtain the modified bio-char adsorbing material. After surface wastewater with the phosphate concentration of 10 mg/L is treated with the adsorbing material of the invention, the phosphate content of the water reaches Class V of surface water environmental quality standard (GB 3838-2002) (</=0.4 mg/L). The adsorbing material has the advantages of low cost, high adsorbing efficiency, and wide applicable range; recycling of waste is achieved, and good social and economic benefits are brought.

Description

technical field [0001] The invention belongs to the field of biological carbonaceous adsorption materials, in particular relates to the preparation of adsorption materials for phosphate sewage treatment, in particular to a biological carbonaceous composite adsorption material and a preparation method thereof. Background technique [0002] my country is a country that lacks water resources, and eutrophication is one of the serious water pollution problems that our country is facing. According to statistics, the eutrophication of major lakes in my country due to nitrogen and phosphorus pollution accounts for more than 56% of the statistical lakes. The eutrophication of the water body is mainly due to the excessive nitrogen, phosphorus and other nutrients in the water body that can be used by algae. Among them, phosphorus is the limiting factor for the proliferation of algae and the key nutrient substance that causes the eutrophication of the water body. How to remove phosphor...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/30C02F1/28
CPCB01J20/20B01J20/22C02F1/283C02F2101/105C02F2103/007
Inventor 练建军陈波贾勇孟海玲盛广宏刘再亮
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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