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Method for removing perchlorate ion in water and preparation of adsorption material

An adsorption material and perchlorate technology, applied in chemical instruments and methods, adsorption water/sewage treatment, water pollutants, etc., can solve the problem of low adsorption rate, achieve good selectivity, strong practicability, and high adsorption capacity Effect

Inactive Publication Date: 2009-07-15
TONGJI UNIV
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Problems solved by technology

However, all granular activated carbons and modified activated carbons do not have high adsorption rates for perchlorate when the adsorption equilibrium is reached.

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0019] (1) Weigh 20g of granular carbon and put it in a clean beaker (the amount of granular carbon can be arbitrary, but it must meet the requirements of the subsequent amount), mix it with deionized water, and the amount of deionized water should submerge the particles Charcoal, heat it on the electric furnace to make it boil for 3min-10min, then cool it naturally and place it for 20h-30h, then pour out the deionized water, and rinse it with deionized water for 2-3 times. The purpose is to wash away the impurities, then put it into a constant temperature drying oven at 110°C-130°C to dry, keep the weight constant, and put it into a grinding bottle for later use.

[0020] This (1) step is to activate the granular activated carbon.

[0021] (2) Weigh 5g of FeSO 4 7H 2 O or FeCl 3 7H 2 O or FeCl 2 4H 2 O or Fe 2 (SO4) 3 9H 2 O (analytical grade) and 5 g of activated carbon were mixed in a clean beaker (FeSO 4 7H 2 O or FeCl 3 7H 2 O or FeCl 2 4H 2 O or Fe ...

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PUM

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Abstract

The invention relates to a method for removing perchlorate ions in water. Absorption material loaded with hydration ferric oxide is added, and the absorption and complexation functions of the loaded hydration ferric oxide are used to absorb and remove perchlorate ions. The method for preparing the absorbing material is as following: FeSO4 7H2O or FeCl3 7H2O or FeCl2 4H2O or Fe2SO43 9H2O and granular carbon are mixed and heated for the hydrolysis of ferric salt for a time, strong alkali is added into the solution, the pH value is regulated to the range from 7 to 9, the solution is heated for a time again, and hydration ferric oxide is formed on carbon and has a strong absorption function on the water solution containing perchlorate ions. The method can remove and absorb the perchlorate ions contained in iron water solution and the perchlorate ions contained in the product water of a water plant to achieve the water quality standard of drinking water.

Description

technical field [0001] The invention belongs to the technical field of water treatment and relates to a preparation method of an adsorption material capable of adsorbing perchlorate radicals in water. Background technique [0002] Chen Xinqing, Pan Bingcai, etc. used the method disclosed in the Chinese patent application with application number 200510095177.5 in the research on the adsorption performance of new resin-based hydrated iron oxide on trace arsenic in water. The adsorption of (V) is less affected by pH, and has high selectivity for As(v) in the presence of competing ions. Dynamic penetration experiments show that As(V) treated with this resin can meet the drinking water standards of China and the United States, and its treatment capacity is more than 30 times higher than that of the resin before immobilization. Qingjian Zhang, Bingcai Pan et al. studied the effect of the amount of hydrated iron oxide in nanometer hydrated iron oxide mixed adsorption materials on ...

Claims

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Application Information

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IPC IPC(8): C02F1/58C02F1/28C02F101/12
Inventor 许建红高乃云楚文海唐玉霖
Owner TONGJI UNIV
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