《Applied Water Science》杂志刊登“采用固定配比的石粉和活性氧化铝去除水溶液中的氟化物”

作  者：Iohborlang M. Umlong, Bodhaditya Das, Rashmi Rekha Devi, Kusum Borah, Lakhshya Bijoy Saikia, Prasanta Kumar Raul, Saumen Banerjee, Lokendra Singh

刊  物：《Applied Water Science》，2012年，2卷第1期，29-36页

关键词：除氟；石粉；活性氧化铝；吸附等温线；吸附单元

摘  要：本文对容易获取的石粉和酸性活化的氧化铝9:1的混合物的除氟能力进行研究。分别进行间歇和连续试验测试吸附材料的效率。间歇试验表明，该混合吸附材料最大氟化物去除量为19.30mg/g，且最适pH值为6.5。吸附研究表明，此过程为物理吸附。流速在氟化物去除中扮演着重要角色。经过三个不同流速下测试连续吸附单元的穿透试验可知，流速越高吸附效率越低。吸附材料的再生研究表明，该材料可采用一种简单的基酸洗涤过程进行解吸。

Defluoridation from aqueous solution using stone dust and activated alumina at a fixed ratio

Authors: Iohborlang M. Umlong, Bodhaditya Das, Rashmi Rekha Devi, Kusum Borah, Lakhshya Bijoy Saikia, Prasanta Kumar Raul, Saumen Banerjee, Lokendra Singh

Journal: Applied Water Science, Volume 2, Number 1 (2012), 29-36

Key words: Defluoridation; Stone dust; Activated alumina; Adsorption isotherms; Sorption unit

Abstract: Easily available stone dust and alumina were acid activated, mixed in the ratio of 9:1 and studied for fluoride removal capacity. Batch and continuous studies were performed to test the efficiency of the adsorbents. Batch study revealed that the mixed adsorbents can remove up to 19.30 mg fluoride per gram of mixed adsorbent and is best removed at pH 6.5. Adsorption studies showed that the mechanism of adsorption is physical sorption. Flow rate plays a significant role in removing fluoride. Breakthrough study of a continuous operated unit tested at three different flow rates showed that decreasing efficiency took place at higher flow rate. The regeneration study shows that this adsorbent can be desorbed following a simple base–acid rinsing procedure.

原文链接：http://link.springer.com/article/10.1007/s13201-011-0019-9