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Preparation, characterization and application of powdered activated carbon‐cellulose acetate phthalate mixed matrix membrane for treatment of steel plant effluent
Author(s) -
Mukherjee Raka,
De Sirshendu
Publication year - 2016
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.3690
Subject(s) - powdered activated carbon treatment , chemical oxygen demand , phenol , effluent , activated carbon , adsorption , membrane , materials science , chromatography , nuclear chemistry , chemical engineering , chemistry , organic chemistry , wastewater , waste management , biochemistry , engineering
Preparation, characterization and industrial application of a mixed matrix membrane (MMM) using powdered activated carbon (PAC) in cellulose acetate phthalate (CAP) have been reported in this study. The objective of this work is to fabricate a less energy intensive, highly selective (to phenolic compounds) adsorptive membrane with high throughput in a scalable platform for simultaneous removal of organic as well chemical oxygen demand (COD) from a steel plant effluent. The membrane with 25 wt% PAC has maximum adsorption capacity of phenol 35 mg/g at pH 5.5. Effluent with total phenolic compounds (23 mg/g) and COD of 5200 mg/l is treated in continuous cross‐flow configuration. Breakthrough time is 44 hr for a filtration area of 0.008 m 2 with total phenol concentration in permeate as per World Health Organization (WHO), 1 mg/l. Throughput of the system is high, 40 l/m 2 hr at transmembrane pressure drop 276 kPa and cross‐flow rate 20 l/hr. Maximum rejection of phenol is obtained at low pressure and cross‐flow rate. Removal of phenolic compounds is achieved by adsorption by PAC in CAP matrix and satisfactory reduction of COD and complete removal of non‐volatile solids are due of sieving mechanism. A simple chemical regeneration method is proposed to recover the permeate flux beyond 90%. Copyright © 2015 John Wiley & Sons, Ltd.