DOIONLINE

DOIONLINE NO - IJASEAT-IRAJ-DOIONLINE-11317

Publish In
International Journal of Advances in Science, Engineering and Technology(IJASEAT)-IJASEAT
Journal Home
Volume Issue
Issue
Volume-6,Issue-1,Special Issue - 1  ( Feb, 2018 )
Paper Title
Removal of Emerging Pharmaceuticals from Domestic Wastewater using Novel Composite Adsorbent
Author Name
Krithika Delhiraja, Nisha A.Ku, Ligy Philip
Affilition
Department of Civil Engineering, Indian Institute of Technology Madras (IITM), Chennai, Tamilnadu Department of Civil Engineering, Sona College of Technology, Suramangalam, Salem, Tamilnadu Department of Civil Engineering, Indian Institute of Technology, Madras (IITM), Chennai, Tamilnadu
Pages
67-73
Abstract
Sorption of frequently occurring emerging pharmaceutical compound such as acetylsalicylic acid (ASA) with single and composite graphene oxide based adsorbent was investigated in detail by conducting batch kinetic, equilibrium and desorption experiments. Among all adsorbents studied, newly synthesized composite adsorbent resulted in good removal efficiency (97.8%). The kinetic study show the equilibrium was reached within 8 hours and pseudo second order kinetic model well fitted with experimental data and indicates physisorption plays a major role. On the other hand, Langmuir isotherm was showed better fit compared to Freundlich isotherm which indicated that adsorption took place on homogenous active layers of the adsorbent. Maximum adsorption capacities were estimated to be 15.4 mg/g for ASA. Desorption of ASA were significantly higher (79.8%) in an organic solvent. This graphene based composite adsorbent was found to be a suitable adsorbent for removing pharmaceuticals from domestic wastewater Keywords - Acetylsalicyclic acid;Domestic wastewater; Composite adsorbent; graphene oxide.
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