铁改性玉米秸秆生物炭的制备及对Cd^(2+)的吸附性能  

Preparation of Iron Modified Corn Stalk Biochar and Its Adsorption Properties for Cd^(2+)

作　　者：刘金燕 赵柳涛 沈莉 关凤禹[2] 郭利 吴沿博 吉国佳 张志伟 鲁勖琳 宋爱君[1,3] LIU Jinyan;ZHAO Liutao;SHEN Li;GUAN Fengyu;GUO Li;WU Yanbo;JI Guojia;ZHANG Zhiwei;LU Xulin;SONG Aijun(College of Chemical Engineering,Hebei Normal University of Science&Technology,Qinhuangdao Hebei,066600;Sino-Arab Chemical Fertilizers Co,LTD;Institute of Applied Photochemistry,Hebei Normal University of Science&Technology,China)

机构地区：[1]河北科技师范学院化学工程学院,河北秦皇岛066600 [2]中国-阿拉伯化肥有限公司 [3]河北科技师范学院应用光化学研究所

出　　处：《河北科技师范学院学报》2022年第1期66-74,共9页Journal of Hebei Normal University of Science & Technology

基　　金：河北省“三三三人才工程”资助项目(项目编号:A201901059,A202001023);河北省引进留学人员资助项目(项目编号:360-0803-YZN-SKYO);河北省重点研发计划项目(项目编号:20327311D)。

摘　　要：为确定不同制备条件下,铁氧化物改性生物炭对受污染水体中的重金属离子Cd^(2+)吸附性能的影响,提高生物炭对水Cd^(2+)的吸附去除性能,以秸秆生物炭为基础材料,FeSO_(4)·7H_(2)O,Fe_(2)(SO_(4))_(3)做为改性剂,选用磁力搅拌法、高温煅烧法、微波加热法3种方法制备改性秸秆生物炭。并通过X-射线衍射分析(XRD)、红外光谱分析(IR)、扫描电子显微镜分析(SEM)、比表面积和孔径分析(BET)对铁改性生物炭材料的物相、结构以及形貌进行表征,同时考察了其对Cd^(2+)的吸附性能。试验结果表明,采用微波法制备的铁改性玉米秸秆生物炭的吸附性能最好,吸附量达到了1.96 mg·g^(-1),是未改性生物炭吸附量的2.02倍。To determine the effect of iron oxide modified biochar on the adsorption performance of heavy metal ion Cd^(2+)in polluted water under different preparation conditions and improve the adsorption and removal performance of biochar on water Cd^(2+),stalk biochar was used as the basic material,and FeSO_(4)·7H_(2)O and Fe_(2)(SO_(4))_(3) as modifiers,to prepare the modified stalk biochar with magnetic stirring method,high temperature calcination method,and microwave heating method.The phase,structure and morphology of iron modified biochar were characterized by X-ray diffraction(XRD),infrared spectroscopy(IR),scanning electron microscopy(SEM)and specific surface area and pore size analysis(BET).The adsorption properties of iron modified biochar for Cd^(2+)were also investigated.The results showed that the adsorption capacity of iron modified corn stalk biochar was 1.96 mg·g^(-1),which was 2.02 times of that of unmodified biochar.

关 键 词：铁改性生物炭 玉米秸秆 制备方法 吸附性能 

分 类 号：TQ424.19[化学工程] X703[环境科学与工程—环境工程]