Arsenic Removal by Using Low Cost Non-conventional (NLP, PLP, ALP) Adsorbents

Nidhi Jain

doi:10.37591/jomcct.v9i3.1502

Abstract

AbstractIn present study, Azadirachta indica (neem leaves), Ficus religiosa (peepal leaves), Emblica officinalis (amla leaves) used as adsorbent. Batch experiments were conducted to study the adsorption behaviour. The material was characterized by FTIR, XRD, TGA-DTA, and SEM-EDS. The extent of arsenic removal capacity was tested by the material by varying the solution parameters like adsorbent dose, adsorbate concentration and pH of the solution, contact time and temperature. The amount of arsenic adsorption increases with the increase of adsorbent concentration which indicates that adsorption depends upon the availability of active sites for arsenic. The experimental data were correlated reasonably well by Freundlich adsorption isotherm. The optimum conditions for the removal of arsenic from water are initial concentration: 0.1 mg/L, adsorbent dose: 1 g/50 mL, pH: 6.0, temperature 50ºC±2ºC, contact time: 30 min. and shaking time: 1 h is worked out. Increasing order of arsenic adsorption on leaf powders was as follows: NLP > ALP > PLP. It can therefore, be potentially applied for the treatment of water contaminated by arsenate. Keywords: Adsorption; low cost adsorbent; Arsenic concentration; Water treatmentCite this ArticleShikha Saxena, Nisha Singh, Nidhi Jain, Arsenic Removal by Using Low Cost Nonconventional (NLP, PLP, ALP) Adsorbents Journal of Modern Chemistry & Chemical Technology. 2018; 9(3): 29–39p.