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生物质化学工程 ›› 2018, Vol. 52 ›› Issue (1): 35-40.doi: 10.3969/j.issn.1673-5854.2018.01.006

• 研究报告 • 上一篇    下一篇

层迭灵芝子实体及其制备炭吸附Cd2+的研究

杨思林1,2, 王大伟2, 张颖2, 陆梅1, 唐丽琼1, 徐椿贤1, 杨斌2   

  1. 1. 西南林业大学 环境科学与工程学院, 云南 昆明 650224;
    2. 云南省森林灾害预警与控制重点实验室, 云南 昆明 650224
  • 收稿日期:2016-11-21 出版日期:2018-01-30 发布日期:2018-02-06
  • 通讯作者: 杨斌,教授,博士生导师,研究领域为生物资源开发与利用;E-mail:yangbin48053@163.com。 E-mail:yangbin48053@163.com
  • 作者简介:杨思林(1979-),男,云南昭通人,副教授,博士,主要从事重金属污染研究
  • 基金资助:
    云南省教育厅科学研究基金项目(2013Y119);西南林业大学科研启动基金项目(111417)

Sorption of Cadmium Ion on Sporophore and Biochar of Ganoderma lobatum

YANG Silin1,2, WANG Dawei2, ZHANG Ying2, LU Mei1, TANG Liqiong1, XU Chunxian1, YANG Bin2   

  1. 1. Faculty of Environmental Science & Engineering, Southwest Forestry University, Kunming 650224, China;
    2. Key Laboratory of Forest Disaster Warning and Control of Yunnan Province, Kunming 650224, China
  • Received:2016-11-21 Online:2018-01-30 Published:2018-02-06

摘要: 以大型真菌层迭灵芝(Ganoderma lobatum)子实体及制备炭作为吸附材料用于吸附Cd2+,研究了吸附剂用量、初始pH值、反应时间、初始Cd2+质量浓度对吸附的影响。结果表明,当Cd2+质量浓度为10 mg/L时,层迭灵芝子实体及制备炭吸附Cd2+的最佳条件为吸附剂用量0.2 g,pH值为7,吸附时间为480 min,在此条件下Cd2+最大去除率分别为94.50%和92.75%。子实体对Cd2+的吸附速率显著高于制备炭,但子实体和制备炭吸附Cd2+的吸附能力之间无显著差异。采用Langmuir和Freundlich等温吸附模型研究子实体和制备炭吸附Cd2+的过程,子实体对Cd2+的吸附过程符合Freundlich模型,而制备炭更符合Langmuir模型。吸附动力学研究表明子实体和制备炭对Cd2+的吸附过程均符合准二级动力学模型。

关键词: 大型真菌, 生物炭, 吸附, 镉离子

Abstract: Sorption capacities of Cd2+from aqueous solutions on the sporophore and biochar of Ganoderma lobatum were evaluated under different conditions including adsorbent doses, pH value of solution, contact time and initial Cd2+concentrations. The results showed that, when the mass concentration of Cd2+ was 10 mg/L, the removal efficiencies of Cd2+ for sporophore and biochar were 94.50 % and 92.75 %, respectively, under optimum conditions of adsorbent dose of 0.2 g, pH value 7 and contact time 480 min. The sorption rate of Cd2+on sporophor was significantly higher than that on biochar, but no significant difference for sorption capacity could be observed between sporophore and biochar. Langmuir and Freundlich models could be used to describe the adsorption data,the results showed that the adsorption process of Cd2+on sporophore was consistent with the Freundlich model, while the adsorption process on the biochar was more consistent with the Langmuir model. The sorption processes of sporophore and biochar for Cd2+ followed well with pseudo second order kinetics.

Key words: macrofungus, biochar, sorption, cadmium ion

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