苹果渣发酵黄腐酸吸附铅离子的研究  

The absorption of lead ion on the fermenting fulvic acid with apple pomace

作　　者：赵亚玲[1] 刘璐[1] 贾志华[2] 郝红[1] 

机构地区：[1]西北大学化工学院,陕西西安710069 [2]西北农林科技大学生命科学学院,陕西杨凌712100

出　　处：《应用化工》2010年第3期350-352,357,共4页Applied Chemical Industry

基　　金：陕西省教育厅科研基金资助项目(01JK077)

摘　　要：以苹果渣为原料,采用连续二次固体发酵,再经碱溶酸析分离纯化后,得生化黄腐酸。检测了生化黄腐酸活性官能团,利用红外吸收光谱对结构进行了表征。在此基础上,通过单因素实验,考察了黄腐酸对重金属Pb2+的吸附效果。研究表明,pH 5.0,时间180 min,温度30℃,黄腐酸浓度2.5 g/L,苹果渣发酵黄腐酸对Pb2+的吸附量最大。The biochemical fulvic acid from apple pomace was prepared by using two-step solid fermenting, followed by alkline solution and acid precipitation. The active functional groups of fulvic acid were detected as well as its structure was characterized using infrared spectroscopic analysis. According to the experiments of single factors, the absorption of fulvic acid to the heavy metal lead ion was thus investigated. The results indicate that the optimum absorption of fulvic acid to Pb2 ＋ are conducted with pH 5.0, 30℃,180 min and fulvie acid of 2.5 g/L.

关 键 词：苹果渣 发酵 黄腐酸 铅离子 吸附 

分 类 号：X799.3[环境科学与工程—环境工程]