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2012•Journal of Xingtai Polytechnic CollegeRequires access

Static Absorption Experimental Study on Cr(VI)Removal in Wastewater by Modified Peanut Shells

Meng Feng

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Abstract

The effect on treatment of 50mL simulated wastewater whose concentration of Cr(Ⅵ) is 50mg/L by modified peanut shells are studied by means of static absorption under different conditions.The experimental results show that when the temperature is 25℃,the diameter is 2-3mm,the adsorbent dosage is 1.0g,the optimum condition is pH =1.0、 adsorption time is about 300 minutes,the adsorption rate of Cr(Ⅵ) can be up to 99.71%.The concentration of Cr(Ⅵ) is 0.144 mg/L after adsorption,to meet the Integrated wastewater discharge standard GB8978-1996 standards for a class of pollutants.The adsorption capacity of modified peanut shell to Cr(Ⅵ) in wastewater is stronger than that of ordinary peanut shell.

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What this paper is about

The effect on treatment of 50mL simulated wastewater whose concentration of Cr(Ⅵ) is 50mg/L by modified peanut shells are studied by means of static absorption under different conditions.The experimental results show that when the temperature is 25℃,the diameter is 2-3mm,the adsorbent dosage is 1.0g,the optimum condition is pH =1.0、 adsorption time is about 300 minutes,the adsorption rate of Cr(Ⅵ) can be up to 99.71%.The concentration of Cr(Ⅵ) is 0.144 mg/L after adsorption,to meet the Integrated wastewater discharge standard GB8978-1996 standards for a class of pollutants.The adsorption capacity of modified peanut shell to Cr(Ⅵ) in wastewater is stronger than that of ordinary peanut shell.

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Available abstract

The effect on treatment of 50mL simulated wastewater whose concentration of Cr(Ⅵ) is 50mg/L by modified peanut shells are studied by means of static absorption under different conditions.The experimental results show that when the temperature is 25℃,the diameter is 2-3mm,the adsorbent dosage is 1.0g,the optimum condition is pH =1.0、 adsorption time is about 300 minutes,the adsorption rate of Cr(Ⅵ) can be up to 99.71%.The concentration of Cr(Ⅵ) is 0.144 mg/L after adsorption,to meet the Integrated wastewater discharge standard GB8978-1996 standards for a class of pollutants.The adsorption capacity of modified peanut shell to Cr(Ⅵ) in wastewater is stronger than that of ordinary peanut shell.

Key concepts: Wastewater, Adsorption, Absorption (acoustics), Pollutant, Chemistry, Shell (structure), Materials science, Nuclear chemistry

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