Adsorptive removal of fluoride from drinking water using porous starch loaded with common metal ions.
Adsorptive removal of fluoride from drinking water using porous starch loaded with common metal ions.
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DOI：
10.1016/j.carbpol.2016.12.052
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发表时间：
2017-03
影响因子：
11.2
通讯作者：
Lingyun Xu;Guijie Chen;Chuan-yi Peng;Huanhuan Qiao;Fei Ke;Ruyan Hou;Daxiang Li;H. Cai;Xiaochun Wa
中科院分区：
文献类型：
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作者：
Lingyun Xu;Guijie Chen;Chuan-yi Peng;Huanhuan Qiao;Fei Ke;Ruyan Hou;Daxiang Li;H. Cai;Xiaochun Wa
本研究将多孔玉米淀粉分别负载Zr、Al、Fe或La制备PS-Zr、PS-Al、PS-Fe和PS-La复合材料。研究了不同生物吸附剂用量、接触时间、溶液pH值和初始氟浓度对水中氟化物的吸附作用。用显微镜和光谱学对生物吸附剂进行了表征。PS-Zr在3.0-9.0的pH范围内表现出较好的除氟能力。吸附过程可以用Langmuir等温模型和Lagergren拟二级动力学模型来描述。PS-Zr对氟的最大吸附量为25.41 mg/g。结果表明，PS-Zr可作为一种有效的生物吸附剂去除饮用水中的氟化物。
In this study, porous corn starch was loaded with Zr, Al, Fe or La to produce the composites PS-Zr, PS-Al, PS-Fe and PS-La. Fluoride adsorption from water was tested at different biosorbent dosages, contact times, solution pH values and initial fluoride concentrations. The biosorbents were characterized by microscopy and spectroscopy. PS-Zr was shown superior defluoridation capacity over a pH range of 3.0–9.0. The adsorption process could be described by the Langmuir isotherm model and the Lagergren pseudo-second-order kinetic model. The maximum fluoride adsorption capacity calculated to be for PS-Zr was 25.41 mg/g. Our results revealed that PS-Zr could be employed as an effective biosorbent for removal of fluoride from drinking water.