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微囊藻吸附剂对Sb(Ⅲ)的生物吸附特征

孙福红 扈学文 郭飞 吴丰昌

孙福红, 扈学文, 郭飞, 吴丰昌. 微囊藻吸附剂对Sb(Ⅲ)的生物吸附特征[J]. 环境科学研究, 2016, 29(12): 1857-1864.
引用本文: 孙福红, 扈学文, 郭飞, 吴丰昌. 微囊藻吸附剂对Sb(Ⅲ)的生物吸附特征[J]. 环境科学研究, 2016, 29(12): 1857-1864.
SUN Fuhong, HU Xuewen, GUO Fei, WU Fengchang. Biosorption Characteristics of Sb(Ⅲ) by Microcystis Biosorbent[J]. Research of Environmental Sciences, 2016, 29(12): 1857-1864.
Citation: SUN Fuhong, HU Xuewen, GUO Fei, WU Fengchang. Biosorption Characteristics of Sb(Ⅲ) by Microcystis Biosorbent[J]. Research of Environmental Sciences, 2016, 29(12): 1857-1864.

微囊藻吸附剂对Sb(Ⅲ)的生物吸附特征

基金项目: 国家自然科学基金项目(41573126,9)

Biosorption Characteristics of Sb(Ⅲ) by Microcystis Biosorbent

  • 摘要: 为去除锑矿山废水中Sb(Ⅲ)污染,采用静态吸附试验,调查了湖泊水华主要藻种——微囊藻(Microcystis)对Sb(Ⅲ)的生物吸附特征及机理,并推断其反应方程式.结果表明:微囊藻吸附剂对Sb(Ⅲ)的吸附作用受生物量、pH、离子强度和吸附时间影响.最佳微囊藻吸附剂投加量为0.50 g,pH为4.0,吸附时间为60 min,室温条件,此时Sb(Ⅲ)的吸附量最大,为5.67 mg/g;微囊藻吸附剂对Sb(Ⅲ)的吸附速率非常快,遵循假二级动力学模型;pH对Sb(Ⅲ)吸附的影响与Sb形态以及吸附剂表面官能团质子化作用密切相关.阳离子(Na+和Ca2+)对Sb(Ⅲ)生物吸附效率的抑制作用随离子强度增加而加强,阴离子(NO3-、Cl-和SO42-)未对其吸附产生影响.研究显示,微囊藻吸附剂对Sb(Ⅲ)的生物吸附以化学吸附为主.羧基和羟基为主要吸附位点,通过表面络合作用与Sb(OH)3相结合形成内源络合物.

     

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出版历程
  • 收稿日期:  2016-06-22
  • 修回日期:  2016-08-31
  • 刊出日期:  2016-12-25

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