球磨小麦秸秆生物炭吸附铅性能及影响因素
Adsorption Performance of Ball-Milling Wheat Straw Biochar to Lead and Its Influencing Factors
DOI: 10.12677/AEP.2021.111004, PDF,   
作者: 曹澄澄, 曹苓玉, 戴欢涛：徐州工程学院环境工程学院，江苏 徐州；徐利群：徐州工程学院环境工程学院，江苏 徐州；无锡新视野环保有限公司，江苏 无锡
关键词: 球磨；生物炭；吸附；重金属；Pb2+；Ball Milling； Biochar； Adsorption； Heavy Metal； Pb2+
摘要: 本文制备了球磨秸秆生物炭，并进行了红外光谱和孔隙结构表征，研究了球磨生物炭对重金属Pb2+的吸附动力学、吸附等温线，考察了pH值、离子浓度、种类等因素对生物炭吸附Pb2+的影响。结果表明，球磨生物炭有着丰富的表面官能团，有利于吸附重金属，对铅的最大吸附量达93.0 mg/g。准二级动力学模型和Langmuir方程能较好地拟合球磨生物炭吸附重金属Pb2+。在pH = 6时球磨生物炭吸附Pb2+的吸附量最高，而Na+和Ca2+对球磨生物炭吸附Pb2+均呈现抑制作用。
Abstract: Ball-milling straw biochar was prepared and characterized by infrared spectroscopy and pore structure. The adsorption kinetics and isotherm of ball-milling biochar for heavy metal Pb2+ were studied. The effects of pH value, ion concentration, and ion species on Pb2+ adsorption were inves-tigated. The results showed that the ball-milling biochar had abundant surface functional groups, which were favorable for the adsorption of heavy metals, and the maximum adsorption capacity of lead reached 93.0 mg/g. The quasi-second-order kinetic model and Langmuir equation can fit the adsorption of heavy metal Pb2+ by ball-milling biochar well. The adsorption capacity of ball-milling biochar for Pb2+ reached maximum at pH = 6, while both Na+ and Ca2+ had adverse effect on the Pb2+ adsorption.
文章引用：曹澄澄, 曹苓玉, 徐利群, 戴欢涛. 球磨小麦秸秆生物炭吸附铅性能及影响因素[J]. 环境保护前沿, 2021, 11(1): 32-38. https://doi.org/10.12677/AEP.2021.111004

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