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应用生态学报 ›› 2012, Vol. 23 ›› Issue (08): 2212-2218.

• 研究报告 • 上一篇    下一篇

粗毛栓菌和蜡状芽孢杆菌及其共固定菌对Pb2+的吸附

杨洲平1,陈平1,王振宇2,胡容1,靖德军1,黄乾明1**   

  1. (1四川农业大学生命科学与理学院, 四川雅安 625014; 2中国科学院沈阳应用生态研究所,  沈阳 110016)
  • 出版日期:2012-08-18 发布日期:2012-08-18

Lead adsorption by Trametes gallica, Bacillus cereus,and their co-immobilized biomaterial.

YANG Zhou-ping1, CHEN Ping1, WANG Zhen-yu2, HU Rong1, JING De-jun1, HUANG Qian-ming1   

  1. (1College of Life and Basic Sciences, Sichuan Agricultural University, Ya’an 625014, Sichuan, China; 2Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China)
  • Online:2012-08-18 Published:2012-08-18

摘要: 将粗毛栓菌菌丝球与蜡状芽孢杆菌共固定为共固定菌.以粗毛栓菌菌丝球、蜡状芽孢杆菌和共固定菌为研究对象,测定不同吸附时间、初始pH、吸附剂浓度和Pb2+浓度对3种生物吸附剂吸附Pb2+的影响,并将3种生物吸附剂吸附Pb2+前后的红外吸收光谱进行分析比较.结果表明: 在吸附剂浓度为2 g·L-1、pH为5.0、Pb2+浓度为50 mg·L-1条件下对Pb2+吸附1 h效果良好,其吸附率分别为71.7%、91.0%和96.9%.生物吸附剂红外光谱主要由蛋白质、碳水化合物和含硫、磷酸基团的吸收带组成,表明对Pb2+吸附起主要作用的官能团是羟基、羧基、磷酸基和含硫基团.    

Abstract: Taking Trametes gallica mycelium pellets, Bacillus cereus, and their coimmobilized biomaterial as bio-adsorbents, this paper studied their Pb2+ adsorption under effects of different contact time, medium initial pH value and Pb2+ concentration, and bioadsorbent concentration, and compared the infrared spectra of the bio-adsorbents before and after Pb2+ absorption. The Pb2+ adsorption efficiency of the bio-adsorbents was the highest when the bioadsorbent concentration was 2 g·L-1, initial pH was 5.0, initial Pb2+ concentration was 50 mg·L-1, and contact time was 1 h, with the Pb2+
biosorption rate being 71.7% for the mycelium pellets of T. gallica, 91.0% for B. cereus, and 96.9% for the co-immobilized biomaterial. The infrared spectra of the bio-adsorbents were mainly consisted of the absorption zones of protein, carbohydrates, and sulphur and phosphorsbased groups, suggesting that hydroxyl, carboxyl, and sulphur and phosphatebased groups played important roles in the Pb2+ adsorption by the bio-adsorbents.