A study on removal of fluorides from drinking water by adsorption onto low-cost materials

被引：238

作者：

Srimurali, M ^{[1
]}

Pragathi, A ^{[1
]}

Karthikeyan, J ^{[1
]}

机构：

[1] Sri Venkateswara Univ, Coll Engn, Dept Civil Engn, Tirupati 517502, Andhra Pradesh, India

来源：

ENVIRONMENTAL POLLUTION | 1998年 / 99卷 / 02期

关键词：

fluorides; removal; adsorption; low-cost materials; bentonite; charfines;

D O I：

10.1016/S0269-7491(97)00129-2

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Various low-cost materials like kaolinite, bentonite, charfines, lignite and nirmali seeds were investigated to assess their capacity for removal of fluorides from water by batch adsorption studies. Studies were also conducted to determine optimum operating-system parameters; such as contact time, pH, dose and size of the adsorbent. Present study has indicated that materials like nirmali seeds and lignite are not effective (removal 6 to 8%); whereas removal by kaolinite clay was slightly higher (18.2%). Charfines and bentonite exhibited highest removal capacity of 38 and 46%, respectively, at optimum system conditions. Chemical pre-treatment of charfines did not result in enhanced removal of fluoride from water. (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

页码：285 / 289

页数：5