改性活性炭吸附处理含铬电镀废水的研究  

Study on Adsorption Treatment of Chromium-containing Electroplating Wastewater by Modified Activated Carbon

作　　者：杨宝宁[1] YANG Bao-ning(Yan'an Vocational & Technical College, Shaanxi Yan'an 716000, China)

机构地区：[1]延安职业技术学院,陕西延安716000

出　　处：《当代化工》2019年第3期488-490,494,共4页Contemporary Chemical Industry

摘　　要：分别采用硫酸和双氧水对活性炭迚行改性,测定了改性后活性炭的表面面积和含氧官能团数量,以改性后的活性炭为吸附剂,用于处理含铬电镀废水。考察了pH值、吸附时间和吸附剂用量等对Cr(VI)去除率的影响,并研究了其吸附等温线。研究表明,相比未改性活性炭,改性后的活性炭含氧官能团数量明显增加,并且改性后活性炭有利于对废水中Cr(VI)的吸附,经双氧水改性后的活性炭的吸附效果最好。Activated carbon was respectively modified by sulfuric acid and hydrogen peroxide. The surface area of modified activated carbon and the number of oxygen-containing functional groups were determined. The modified activated carbon was used as an adsorbent to treat chromium-containing electroplating wastewater. The influence of pH value, adsorption time and adsorbent dosage on the removal rate of Cr(VI) was investigated, and the adsorption isotherm was studied. The results showed that, compared with unmodified activated carbon, the number of oxygen-containing functional groups of modified activated carbon was significantly increased, and the modified activated carbon was favorable for the adsorption of Cr(VI) in wastewater, the adsorption capability of activated carbon modified by hydrogen peroxide was higher than that of activated carbon modified by sulfuric acid.

关 键 词：电镀废水 活性炭 含氧官能团 

分 类 号：O647.31[理学—物理化学]