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

国家自然科学基金项目（21177053）~~；

本校为第一机构

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~- adsorpt...