利用废啤酒酵母泥对活性黑31的吸附特性研究  

Study on biosorptive characteristics of Reactive Black 31 by using waste beer yeast sludge

作　　者：王宝娥[1] 周康群[1] 郭琇[1] 古伟杰[1] 

机构地区：[1]仲恺农业工程学院环境科学与工程学院,广州510225

出　　处：《环境工程学报》2011年第8期1735-1738,共4页Chinese Journal of Environmental Engineering

基　　金：国家自然科学基金(青年基金)资助项目(20807058);仲恺农业工程学院引进人才科研启动基金资助项目(G2360258)

摘　　要：利用粉末状废啤酒酵母泥对水中活性黑31进行吸附去除实验,研究了不同溶液初始pH值、不同温度对活性黑31的吸附性能,继而探讨了其吸附热力学和解吸性能。结果表明:在强酸条件下(pH 3),废啤酒酵母泥对活性黑31的吸附量最大;温度对废啤酒酵母泥吸附活性黑31的性能影响不大,温度从25℃升至50℃,吸附量只减少了9.9 mg/g;吸附热力学表明吸附过程是一个自发进行的放热过程;吸附过程中染料分子在固/液界面的随意运动性能稍有降低。用0.2mol/L的NaOH溶液对吸附活性黑31后的废啤酒酵母泥的解吸率为84.6%。Reactive Black 31 was removed from aqueous by biosorption using powder waste beer yeast sludge.The effect of initial pH and temperature on biosorption,biosorption thermodynamics and desorption ability was investigated.The results showed that the biosorption capacity was the largest at initial pH 3.The effect of temperature on biosorption of Reactive Black 31 was little.The biosorption capacity decreased only 9.9 mg/g at 25 ℃ to 50 ℃.Thermodynamics analysis indicated that the biosorption process by powder waste beer yeast sludge was spontaneous and endothermic in nature.The dye molecules movements decreased slightly in random at the solid/liquid interface during the biosorption of dye on biosorbents.The desorption efficiency of Reactive Black 31 absorbed on powder waste beer yeast sludge by 0.2 mol/L of NaOH solution was 84.6%.

关 键 词：生物吸附 废啤酒酵母泥 吸附热力学 活性染料 

分 类 号：X172[环境科学与工程—环境科学]