稻草作为生物吸附剂去除水溶液中偶氮染料的研究

Utilization of Straw as biosorbent for removal of Azo Dye from aqueous solution

用低值易得的稻草作为生物吸附剂对活性红和中性黄两种偶氮染料进行吸附处理研究,考察了吸附剂粒径、初始染料浓度、吸附时间、溶液初始pH等因素对染料吸附的影响。结果显示,吸附剂粒径200目、活性红染料浓度40mg/L、中性黄染料浓度50mg/L、吸附时间20min、吸附物剂量5g/L、初始pH2时,碎稻草对两种偶氮染料的吸附效果显著,分别达到活性红84%、中性黄94%。

Adsorption of Reactive Red X-3B;Neutral Orange by straw was studied with a static adsorption method and effects of particle size of straw,initial concentration of Azo Dye,adsorption time,pH were investigated.Results show that under the following optimization conditions of particle size of straw 200 mesh,initial concentration of Azo Dye（Reactive Red X-3B 40mg/L;Neutral Orange 50mg/L）,adsorption time 20min,pH2,the adsorption rate of Reactive Red X-3B and Neutral Orange could be up to 84% and 94%.