Adsorption of 2, 4‐D Herbicide from Water Environment on Modified Silica Gel Factory Waste. (1st November 2013)

• Record Type: Journal Article
• Authors: Koner, Suman; Pal, Anjali; Adak, Asok
• Is Part Of: Water environment research. Volume 85:Number 11(2013)
• Page Start: 2147
• Page End: 2156
• Publication Date: 2013-11-01
• Subjects: adsorption -- herbicide -- 2, 4‐D -- surfactant‐modified silica gel waste -- removal; Water quality management -- Periodicals; Water -- Purification -- Periodicals; Water -- Pollution -- Periodicals; Water -- Pollution; Water -- Purification; Water quality management; Sewage; Water Pollution; Periodicals; Electronic journals; Periodicals; 628.16
• DOI: 10.2175/106143013X13736496909310
• Languages: English
• ISSNs: 1061-4303

Abstract

ABSTRACT: : The solid waste collected from a local silica gel factory was utilized as an adsorbing media for the removal of the herbicide 2, 4‐dichlorophenoxyacetic acid (2, 4‐D) after its surface modification with cationic surfactant. Characterization was carried out using thermogravimetric analysis of raw and modified waste. The experiments on the sorption process were conducted for kinetic analysis, effect of initial 2, 4‐D concentration, adsorbent dose, dissolved salts, pH, surfactant surface coverage, temperature, and shaking speed to understand sorption behavior in batch mode. Presence of electrolyte, solution pH, and temperature were found to affect the performance of the adsorbent. The sorption was found to best follow the pseudo‐second order reaction kinetics model and the Redlich‐Peterson isotherm model. The studies revealed surfactant‐modified silica gel waste (SMSGW) to be an efficient adsorbing media for removal of 2, 4‐D.