镧改性凹凸棒土再生效果研究

房凯; 商卫纯; 姚俊琪; 钟天意; 冯骞; 葛冉

doi:10.12153/j.issn.1674-991X.20190078

镧改性凹凸棒土再生效果研究

doi: 10.12153/j.issn.1674-991X.20190078

房凯¹,
商卫纯²,
姚俊琪³,
钟天意⁴,
冯骞^5,6,*, ,,
葛冉^5,6

1.
江苏省宿迁市水利局
2.
宁波市环境保护科学研究设计院
3.
江苏省农村水利科技发展中心
4.
中设设计集团股份有限公司
5.
河海大学环境学院
6.
河海大学,浅水湖泊综合治理与资源开发教育部重点实验室

详细信息

作者简介:
房凯(1984—),男,高级工程师,硕士,研究方向为农业水土工程, 123732508@qq.com

通讯作者:
冯骞 E-mail: xiaofq@hhu.edu.cn

中图分类号: X703
计量
- 文章访问数: 442
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- PDF下载量: 126
- 被引次数: 0
出版历程
- 收稿日期: 2019-04-30
- 刊出日期: 2020-01-20

A study on the regeneration of lanthanum modified attapulgite

FANG Kai¹,
SHANG Weichun²,
YAO Junqi³,
ZHONG Tianyi⁴,
FENG Qian^{5,6,*
, ,},
GE Ran^5,6

1.
Suqian Water Conservancy Bureau
2.
Ningbo Scientific Research and Design Institute of Environmental Protection
3.
Jiangsu Rural Water Conservancy Science and Technology Development Center
4.
Central Design Group Co., Ltd.
5.
College of Environmental Science and Engineering, Hohai University
6.
Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes of Ministry of Education, Hohai University

More Information

Corresponding author: Qian FENG E-mail: xiaofq@hhu.edu.cn

摘要

摘要: 以吸附磷酸盐的镧改性凹凸棒土为研究对象,通过试验研究了pH、再生时间、再生温度及再生次数对镧改性凹凸棒土再生效果的影响。结果表明:碱性条件有利于改性凹凸棒土的再生,pH为8时,再生效果最佳;再生时间为30 min时,再生率超过90%,继续增加再生时间,再生率增长缓慢;再生温度升高会增加改性凹凸棒土的再生率及损失率,30 ℃时再生率较高、损失率较低;再生6次后改性凹凸棒土的性能破坏严重。综合考虑,改性凹凸棒土的最佳再生条件是pH为8,再生温度为30 ℃,再生时间为30 min,再生次数为6次。
- 凹凸棒土 /
- 复合改性 /
- 吸附 /
- 再生
Abstract: The effects of regeneration pH, time , temperature and regeneration times on the regeneration effect of Lanthanum modified attapulgite (La-ATP) were studied by experiments. The results showed that the alkaline condition was beneficial to La-ATP regeneration. The ideal regeneration rate and loss rate could be achieved at pH 8. The regeneration rate was higher than 90% after 30 min regeneration. Slight increasing of regeneration rate was found when regeneration time was more than 30 minutes. The increase of regeneration temperature enriched the regeneration rate and loss rate of La-ATP. The regeneration rate was higher and the loss rate was lower at 30 ℃. The properties of attapulgite were seriously damaged after 6 times of regeneration. Considering comprehensively, the optimum regeneration conditions were as follows: pH=8, regeneration temperature 30 ℃, regeneration time 30 min, regeneration times 6.
- attapulgite /
- composite modification /
- adsorption /
- regeneration

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参考文献(24)

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