[1]刘健,邵玉芳.香菇菌糠对重金属离子的吸附作用[J].江苏农业学报,2016,(06):1336-1343.[doi:doi:10.3969/j.issn.1000-4440.2016.06.022]
　LIU Jian,SHAO Yu-fang.Biosorption of several heavy metal ions by Lentinus edodes spent substrate[J].,2016,(06):1336-1343.[doi:doi:10.3969/j.issn.1000-4440.2016.06.022]
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香菇菌糠对重金属离子的吸附作用()
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江苏农业学报[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2016年06期
页码:
1336-1343
栏目:
耕作栽培·资源环境
出版日期:
2017-02-07

文章信息/Info

Title:
Biosorption of several heavy metal ions by Lentinus edodes spent substrate
作者:
刘健; 邵玉芳
(浙江大学生物系统工程与食品科学学院,浙江杭州310058)
Author(s):
LIU Jian; SHAO Yu-fang
(College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China)
关键词:
生物吸附; 菌糠; 重金属; 吸附机理
Keywords:
biosorption; spent substrate; heavy metal; adsorption mechanism
分类号:
X703.1
DOI:
doi:10.3969/j.issn.1000-4440.2016.06.022
文献标志码:
A
摘要:
为了探讨和研究治理环境中重金属污染的有效途径，以香菇菌糠为吸附剂吸附混合重金属（Cr3+、Cd2+和Pb2+）溶液中的重金属离子，通过单因素试验研究吸附时间、pH值、投料量、重金属溶液初始浓度和菌糠粒径对吸附效果的影响。结果显示，对于混合的重金属离子溶液，在固定试验温度25 ℃和振摇速率200 r/min条件下，综合最佳吸附条件为：吸附时间60 min，pH4.0，投料量5 g/L，菌糠粒径小于0.5 mm。混合重金属溶液中，重金属离子之间存在竞争吸附。菌糠对3种重金属离子的吸附作用符合Lagergern准二级动力学模型；等温吸附模型中Cd2+符合Langmuir吸附模型， Cr3+和Pb2+符合Freundlich吸附模型。在适当吸附条件下，香菇菌糠对混合重金属溶液中Cr3+、Cd2+和Pb2+都有较强的去除能力。
Abstract:
To find an effective way to control heavy metals pollution, Lentinus edodes spent substrate was taken as biological adsorbent for heavy metal ions. The effects of single factors such as adsorption time, pH, dosage, initial concentration of heavy metal ions and the size of spent substrate on the adsorption were investigated. The removal rates of heavy metal ions reached the highest under the following condition: contact time of 60 min, pH of 4.0, spent substrate of 5 g/L, and spent substrate radius less than 0.5 mm. Competitive adsorption between heavy metal ions was found in the mixed heavy metals solution. The Lagergern pseudo-second-order kinetic model well described the adsorption of three kinds of heavy metal ions (Cr3+, Cd2+ and Pb2+) by L. edodes spent substrate. The Langmuir adsorption model fitted the biosorption behavior of Cd2+ onto biomass, whereas Freundlich adsorption model respresented the biosorption of Cr3+ and Pb2+ onto biomass. In conclusion, under appropriate condition, the L. edodes spent substrate showed a good performance of adsorbing Cr3+, Cd2+ and Pb2+ in the mixed heavy metals solution.

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备注/Memo

备注/Memo:
收稿日期：2016-01-13 基金项目：浙江省自然科学基金项目 (Y13B070006) 作者简介：刘健(1989-), 男,贵州长顺人, 硕士研究生, 主要从事土壤和水中污染物的修复研究。（E-mail）18768187500@163.com
更新日期/Last Update: 2017-02-07