Fluoride removal through aluminium and calcium modified sand in aqueous solution
Date
2018
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
University of Delaware
Abstract
High-concentration fluoride contaminant could exist widely in industrial wastewater such as thermal power plant and photovoltaic industrial. How to make fluoride removal more efficient, easy-to-operate, and cost-effective remains a major issue from both environmental and industrial perspectives. In this study, quartz sand was applied as carrier to provide a low cost and easy operation adsorbent. Aluminum and calcium are two kinds of commonly material used for fluoride removal. Hence, aluminum and calcium were applied for sand surface modification to improve the fluoride adsorption density. The precursor and calcination temperature play an important role of material properties. Different modification methods were conduct to ontain the most promosing surface modified process. The objective of the study was to better understand the effect of different precursors and calcination temperature on sand modification for fluoride removal. The fluoride adsorption study of aluminum modified sand (AMS) and aluminum calcium modified sand (ACMS) were conducted via batch experiment. The effects of different precursors and temperature were studied through various charactorization methods. The experiment result showed a successful modification on sand for fluoride removal in aqueous solution.
Description
Keywords
Aluminium, Fluoride adsorption, Sand coating, Surface charatorization, Surface modification