笼芯陶黑碳微珠去除模拟废水中铬

刘秀; 刘立恒; 刘睿; 黄麟; 林华; 韦仲华; 王敦球

doi:10.13205/j.hjgc.202103011

笼芯陶黑碳微珠去除模拟废水中铬

doi: 10.13205/j.hjgc.202103011

刘秀¹,
刘立恒^1, ,,
刘睿¹,
黄麟¹,
林华¹,
韦仲华²,
王敦球¹

1. 桂林理工大学环境科学与工程学院广西环境污染控制理论与技术重点实验室喀斯特地区水污染控制与水安全协同创新中心, 广西桂林 541004;
2. 桂林新竹大自然生物材料有限公司, 广西桂林 541000

基金项目:

国家自然科学基金重点项目（51638006）；广西高等学校高水平创新团队及卓越学者计划项目（002401013001）；广西重点实验室研究基金项目（桂科能1401Z004，桂科能1801Z009）；广西“八桂学者”岗位专项经费项目（刘会娟）。

详细信息

作者简介:
刘秀(1995-),女,硕士,主要研究方向为水污染控制。1354341775@qq.com

通讯作者:
刘立恒,博士,副研究员。deanhenry_liu01@126.com

计量
- 文章访问数: 141
- HTML全文浏览量: 25
- PDF下载量: 9
- 被引次数: 0
出版历程
- 收稿日期: 2020-01-03
- 网络出版日期: 2021-07-19

EXPERIMENTAL STUDY ON Cr REMOVAL FROM SIMULATED WASTEWATER BY CAGE CORE BLACK CARBON BEADS

1. Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Collaborative Innovation Center for Water Pollution Control and Water Safety in Karst Area, College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541004, China;
2. Guilin Xinzhu Natural Biomaterial Co., Ltd, Guilin 541000, China

摘要

摘要: 将笼芯陶黑碳微珠用于水溶液中铬的吸附去除，探讨了溶液初始pH、初始浓度、吸附温度、吸附时间、竹炭添加量对铬去除的影响，分析了铬去除的等温过程、动力学和热力学。结果表明：较低的溶液初始pH、较高的吸附温度、较长的吸附时间和较大的笼芯陶黑碳微珠添加量有利于铬的吸附去除；铬的去除更符合D-R模型和准二级动力学模型，其饱和吸附量可达到30.62 mg/g；铬去除过程的控速步骤为液膜扩散和颗粒内扩散联合控制，但以液膜扩散为主导；笼芯陶黑碳微珠对铬的去除是自发的、吸热的、以化学吸附为主的过程。
- 铬 /
- 笼芯陶黑碳微珠 /
- 吸附 /
- 动力学 /
- 热力学
Abstract: The cage core black carbon beads were used to remove Cr in aqueous solution. The effects of initial pH and Cr concentration, adsorption time and temperature and adsorbent dosage on Cr removal were discussed, while the isotherm, kinetics and thermodynamics of Cr removal process were also studied. The results showed that lower initial pH, higher adsorption temperature and adsorbent dosage, and longer adsorption time were conducive to Cr removal. The Cr removal process was better described by D-R model and pseudo-second order kinetic model. The saturated adsorption capacity of bamboo based biochar for Cr was 30.62 mg/g. The controlling-step of this process was combination of liquid film diffusion and intraparticle diffusion, while the liquid film diffusion was the dominant course. The Cr removal by cage core black carbon beads made from bamboo was a spontaneous and endothermic chemisorption process.
- Cr /
- cage core black carbon beads /
- adsorption /
- kinetics /
- thermodynamics

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参考文献(45)

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