期刊论文

Adsorption characteristics and mechanism of modified tobacco powder biomass adsorbent for NO_3~- in water

中文

农业环境科学学报

1672-2043

2018

37

9

2014-2020

10.11654/jaes.2018-0035

收稿日期：2018-01-05 录用日期：2018-04-09 作者简介：康四军（1993—），男，河南驻马店人，硕士研究生，从事水处理技术与理论研究。E-mail：913274010@qq.com *通信作者：杨金辉 E-mail：yanjinhui126@126.com 基金项目：国家自然科学基金项目 （ 21177053） Projectsupported： The National Natural Science Foundation of China（ 21177053） The National Natural Science Foundation of China (21177053)

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为探究改性烟末生物质吸附剂对水中NO_3~-的吸附机理,以烟末为原料,通过吡啶催化法改性制备改性烟末生物质吸附剂(Modified Tobacco Powder Biomass Adsorbents,MTPBA),吸附水中的NO_3~-。根据X-射线衍射(XRD)、扫描电子显微镜(SEM)、能谱分析(EDS)和傅里叶变换红外光谱(FTIR)对MTPBA的表征分析,结果显示:烟末改性后,表面Zeta电位、孔隙结构和纤维素上官能团的变化有利于吸附NO_3~-。采用静态吸附实验方法,研究MTPBA对水中NO_3~-的吸附特性,结果表明:当NO_3~-初始浓度为30 mg·L~(-1), MTPBA投加量为4.0 g·L~(-1),溶液pH=6.68,吸附时间为30 min时,MTPBA对水中NO_3~-吸附效果最佳。吸附过程与准...

To explore the mechanism of adsorption of NO-3 by modified tobacco powder biomass adsorbent (MTPBA) in water, scrap tobacco (tobacco powder) was used as the raw material to obtain MTPBA with the pyridine-catalyzed method. The characterization of MTPBA by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and Fourier-transform infrared spectroscopy (FTIR) were used to investigate the mechanism of MTPBA adsorption. The static adsorption test method was used to explore the characteristics of NO- 3 ad...