|本期目录/Table of Contents|

[1]李佳霜,冒国龙,赵松炎,等.改性生物炭吸附废水中Sb(Ⅴ)的特性[J].江苏农业科学,2019,47(08):289-295.
 Li Jiashuang,et al.Adsorption of Sb(Ⅴ) in wastewater by modified biochar[J].Jiangsu Agricultural Sciences,2019,47(08):289-295.
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改性生物炭吸附废水中Sb(Ⅴ)的特性(PDF)
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《江苏农业科学》[ISSN:1002-1302/CN:32-1214/S]

卷:
第47卷
期数:
2019年第08期
页码:
289-295
栏目:
资源与环境
出版日期:
2019-05-19

文章信息/Info

Title:
Adsorption of Sb(Ⅴ) in wastewater by modified biochar
作者:
李佳霜1 冒国龙2 赵松炎1 胥思勤1
1.贵州大学国土资源部喀斯特环境与地质灾害重点实验室,贵州贵阳 550025; 2.贵州大学电气工程学院,贵州贵阳 550025
Author(s):
Li Jiashuanget al
关键词:
Sb(Ⅴ)三价铝高锰酸钾改性生物炭吸附
Keywords:
-
分类号:
X703
DOI:
-
文献标志码:
A
摘要:
为了更好地处理废水中的Sb(Ⅴ),利用三价铝和高锰酸钾对生物炭进行改性,并使用比表面积(BET法)分析、扫描电子显微镜(SEM)和傅里叶变换红外光谱(FTIR)表征改性前后的生物炭。通过对生物炭投加量、反应时间、Sb(Ⅴ)初始浓度、pH值进行研究,拟合分析试验数据,探究3种生物炭的吸附特性与吸附机理。结果表明,25 ℃下,固液比为1 g ∶ 400 mL,反应时间为4 h,pH值为2时,原炭(BC)、Al3+改性的生物炭(Al-BC)和高锰酸钾改性生物炭(KMnO4-BC)对Sb(Ⅴ)的最大吸附量分别为4.41、10.48、30.06 mg/g,三者吸附量均整体随pH值的增大而逐渐减小。3种生物炭等温吸附曲线符合Langmuir等温模型,BC和KMnO4-BC吸附动力学过程遵循拟二级动力学方程,Al-BC 吸附符合拟一级动力学方程。生物炭吸附过程为以物理吸附行为主的物理-化学复合过程。BET比表面积分析结果表明,Al-BC比表面积及总孔体积最大,KMnO4-BC粒径较小且其表面附着的晶体提高其吸附能力。FTIR结果表明,改性前后生物炭表面官能团差别不大。
Abstract:
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备注/Memo

备注/Memo:
收稿日期:2018-01-18
基金项目:国家自然科学基金(编号:41062007);贵州省一流学科建设项目(编号:GNYL[2017]007);贵州大学面向智能装备领域的“技术众筹”研究生创新基地项目(编号:JSZC[2016]003);贵州大学研究生创新基金(编号:研理工2017049)。
作者简介:李佳霜(1992—),女,四川荣县人,硕士研究生,主要从事环境化学与生物地球化学研究。E-mail:jiashuangli00@163.com。
通信作者:胥思勤,博士,副教
更新日期/Last Update: 2019-04-20