食品工业科技2012，Vol.33Issue(7)：146-149,153,5.
芹菜渣对Cr~（6＋）的吸附实验
Study on biosorption of Cr~（6＋）by celery residue
摘要
Abstract
By adsorption,adsorption and adsorption mechanism of Cr~（6＋）were studied by celery residue,firstly.Experimental results showed that the adsorption rate of Cr~（6＋）increased with the decreasing of the size of celery residue.Under the same Cr~（6＋）initial concentration,with the addition of more celery residue,Cr~（6＋）adsorption rate increased.Under the same addition amount of celery residue,with the addition of Cr~（6＋）initial concentration,adsorption rate increased.Orthogonal tests showed that：the optimum adsorption conditions for the wastewater pH was 2,the temperature was 40℃ and soaking time was 2 hours,influence degree for 3 factors from big to small was pH,temperature and soaking time.The best solid to liquid ratio of Cr6＋（50mg/L）adsorption by celery residue was 10g/L.Celery residue on Cr~（6＋）adsorption with single molecule layer absorption dominant,and adsorption isotherm was fit to Freundlich adsorption isotherm.The adsorption rate for celery residue to Cr~（6＋）was quick at first,and then became slow after more than 90min.Second kinetic model could describe the adsorption kinetics of celery residue much better.In the low concentration of Cr~（6＋）solution（≤30mg/L）,the adsorption of celery residue was better than that of activated carbon.关键词
芹菜渣/Cr~（6＋）/生物吸附/吸附等温线/吸附动力曲线/固液比Key words
celery residue/Cr~(6+)/biosorption/adsorption isotherm/dynamic adsorption curve/solid to liquid ratio分类
轻工纺织引用本文复制引用
杜磊..芹菜渣对Cr~（6＋）的吸附实验[J].食品工业科技,2012,33(7):146-149,153,5.基金项目
山西省高校科技开发项目 （）
山西省青年科技研究基金 （）
