微藻生物炭对对硝基苯酚（PNP）的吸附：高吸附容量及机制分析。
Adsorption of p-nitrophenols (PNP) on microalgal biochar: Analysis of high adsorption capacity and mechanism.
机构信息
State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, 73 Huanghe Road, Harbin, Heilongjiang 150090, PR China.
State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, 73 Huanghe Road, Harbin, Heilongjiang 150090, PR China; Department of Chemical Engineering, National Cheng Kung University, Tainan 701, Taiwan; Research Center for Energy Technology and Strategy Center, National Cheng Kung University, Tainan 701, Taiwan.
出版信息
Bioresour Technol. 2017 Nov;244(Pt 2):1456-1464. doi: 10.1016/j.biortech.2017.05.025. Epub 2017 May 8.
Biochars derived from three microalgal strains (namely, Chlorella sp. Cha-01, Chlamydomonas sp. Tai-03 and Coelastrum sp. Pte-15) were evaluated for their capacity to adsorb p-nitrophenols (PNP) using raw microalgal biomass and powdered activated carbon (PAC) as the control. The results show that BC-Cha-01 (biochar from Chlorella sp. Cha-01) exhibited a high PNP adsorption capacity of 204.8mgg, which is 250% and 140% higher than that of its raw biomass and PAC, respectively. The adsorption kinetics and equilibrium are well described with pseudo-second-order equation and Freundlich model, respectively. BC-Cha-01 was found to contain higher polarity moieties with more O-containing functional groups than PAC and other microalgae-derived biochars. The strong polarity of binding sites on BC-Cha-01 may be responsible for its superior adsorption capacity. The biochars from Chlorella sp. Cha-01 seem to have the potential to serve as a highly efficient PNP adsorbent for wastewater treatment or emergency water pollution control.
三种微藻（即绿球藻 Cha-01 株、衣藻 Tai-03 株和栅藻 Pte-15 株）制备的生物炭被用来吸附 p-硝基苯酚（PNP），以原微藻生物质和粉末状活性炭（PAC）作为对照。结果表明，BC-Cha-01（绿球藻 Cha-01 制备的生物炭）对 PNP 的吸附容量高达 204.8mg/g，分别比原生物质和 PAC 高 250%和 140%。吸附动力学和平衡分别很好地用拟二级方程和 Freundlich 模型描述。BC-Cha-01 含有比 PAC 和其他微藻生物炭更高比例的极性基团和更多含氧官能团。BC-Cha-01 上结合位点的强极性可能是其具有优越吸附能力的原因。绿球藻 Cha-01 制备的生物炭似乎有可能成为一种高效的 PNP 吸附剂，用于废水处理或紧急水污染控制。
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