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Biomimetic lipophilic activated carbon for enhanced removal of triclosan from water

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Title Biomimetic lipophilic activated carbon for enhanced removal of triclosan from water
 
Creator Kaur, Harkirat
Hippargi, Girivyankatsh
Pophali, Girish R.
Bansiwal, Amit
 
Subject Water Pollution
Water Treatment
 
Description Triclosan, an antimicrobial micro-pollutant with a high bio-accumulation potential represented by its
high octanol-water partition coefficient (log Kow) of 4.76 is commonly encountered in water and wastewater
worldwide. The present study focuses on biomimetic surface modification of commercial activated
carbon (PAC) with long chain fatty acid namely docosahexaenoic acid (DHA) resulting in enhanced affinity
for the hydrophobic micro-pollutant; triclosan (TCS). The sorption process of the resulting modified
lipophilic carbon (PACM) was investigated for the effect of various experimental conditions. The
Freundlich isotherm and pseudo-second-order kinetic models had a better fit. PACM exhibited the maximum
adsorption capacity of 395.2 mg g�1 in contrast to 71.5 mg g�1 obtained for PAC. The surface morphology
in terms of surface area, surface acidity, pore size, contact angle, etc. and were also evaluated.
The contact angle of 134.3� obtained for PACM confirmed its highly hydrophobic nature. The efficacy of
PACM was also evaluated using real-world secondary treated effluent containing triclosan confirming
its applicability for tertiary treatment of wastewater. The study established that the biomimetic approach
of creating lipid-like sites on the carbon surface results in the enhanced removal of lipophilic micropollutants.
It can also be utilized for the removal and recovery of a wide variety of other organic
micro-pollutants.
 
Publisher Elsevier
 
Date 2019
 
Type Article
PeerReviewed
 
Format application/pdf
 
Identifier http://neeri.csircentral.net/1144/1/1-s2.0-S0021979718311743-main.pdf
Kaur, Harkirat and Hippargi, Girivyankatsh and Pophali, Girish R. and Bansiwal, Amit (2019) Biomimetic lipophilic activated carbon for enhanced removal of triclosan from water. Journal of Colloid and Interface Science, 535. pp. 111-121. ISSN 0021-9797, ESSN: 1095-7103
 
Relation http://neeri.csircentral.net/1144/