用加碳焙烧法对膨润土改性的研究

doi:10.3863/j.issn.1000-2634.2002.04.019

西南石油大学学报(自然科学版) ›› 2002, Vol. 24 ›› Issue (4): 65-67.DOI: 10.3863/j.issn.1000-2634.2002.04.019

用加碳焙烧法对膨润土改性的研究

陈集饶小桐许源丰敏

西南石油学院化学化工学院,四川南充637001

收稿日期:2002-01-17 修回日期:1900-01-01 出版日期:2002-08-20 发布日期:2002-08-20
通讯作者: 陈集

RESEARCH ON MODIFIED BENTONITE BY CARBON-ENTRAINING ROASTING METHOD

CHEN Ji RAO Xiao-tong XU Yuan

Southwest Petroleum Institute, Nanchong Sichuan 637001, China

Received:2002-01-17 Revised:1900-01-01 Online:2002-08-20 Published:2002-08-20
Contact: CHEN Ji

摘要/Abstract

摘要：

提出了对膨润土进行加碳焙烧改性的方法,并通过对水溶液中苯酚的去除率的测定来评价改性的效果。通过实验,确定了最佳改性条件为:加碳量3%,焙烧温度600℃,焙烧时间2 h。实验结果表明,与直接焙烧法相比,加碳焙烧法所制得的膨润土吸附剂有更强的吸附能力,苯酚去除率提高约16%,水处理后吸附剂易于沉降分离,回收的吸附剂在600℃下活化后可反复多次使用,因此可作为一种成本较低,无二次污染的有机废水处理剂。同时,由于其结构稳定,比表面较大,故也可作为催化剂载体使用。
　　　

关键词: 膨润土, 吸附剂, 废水处理, 焙烧

Abstract: A new method on bentonite modification by carbon-entraining roasting has been presented. The optimum conditions for bentonite modification were determined by the experiments.
The effect of improvement was evaluated by de-phenol efficiency in aqueous solution. Comparing with directing roasting method, the bentonite absorber made by carbon-entraining method has stronger adsorptive capacity, its dephenol efficiency raises about 16%. The absorber is easy to separate by sagging after treating waste water, and the recovered absorber is reusable by activation at 600℃. The modified bentonite by carbon-entraining roasting method is a good organic wastewater treatment agent that is cheaper and does not cause secondary pollution. Besides, it can be used as a catalyst carrier because the modified betonite has a stable structure and large amounts of specific surface.

Key words: bentonite, absorber, wastewater treatment, roast

中图分类号:

TQ 016

陈集饶小桐许源丰敏. 用加碳焙烧法对膨润土改性的研究 [J]. 西南石油大学学报(自然科学版), 2002, 24(4): 65-67.

CHEN Ji RAO Xiao-tong XU Yuan. RESEARCH ON MODIFIED BENTONITE BY CARBON-ENTRAINING ROASTING METHOD[J]. 西南石油大学学报(自然科学版), 2002, 24(4): 65-67.

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用加碳焙烧法对膨润土改性的研究

RESEARCH ON MODIFIED BENTONITE BY CARBON-ENTRAINING ROASTING METHOD

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