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

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 pe...

Full description

Saved in:
Bibliographic Details
Published in:Applied water science 2012-03, Vol.2 (1), p.29-36
Main Authors: Umlong, Iohborlang M., Das, Bodhaditya, Devi, Rashmi Rekha, Borah, Kusum, Saikia, Lakhshya Bijoy, Raul, Prasanta Kumar, Banerjee, Saumen, Singh, Lokendra
Format: Article
Language:English
Subjects:
Aquatic Pollution
Comparative Law
Earth and Environmental Science
Earth Sciences
Hydrogeology
Industrial and Production Engineering
International & Foreign Law
Nanotechnology
Original Article
Private International Law
Waste Water Technology
Water Industry/Water Technologies
Water Management
Water Pollution Control
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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.
ISSN:2190-5487
2190-5495
DOI:10.1007/s13201-011-0019-9