Bioresource Technology 249 (2018) 386–394 Contents lists available at ScienceDirect Bioresource Technology journal homepage: www.elsevier.com/locate/biortech An insight into the adsorption of diclofenac on diﬀerent biochars: Mechanisms, surface chemistry, and thermodynamics a a a, b c Linson Lonappan , Tarek Rouissi , Satinder Kaur Brar , Mausam Verma , Rao Y. Surampalli INRS-ETE, Université du Québec, 490, Rue de la Couronne, Québec G1K 9A9, Canada CO Solutions Inc., 2300, rue Jean-Perrin, Québec G2C 1T9, Canada Department of Civil Engineering, University of Nebraska-Lincoln, N104 SEC P.O. Box 886105, Lincoln, NE 68588-6105, United States GR APHICAL A BSTRACT ARTICLE I NFO ABSTRACT Keywords: Biochars were prepared from feedstocks pinewood and pig manure. Biochar microparticles obtained through Diclofenac grinding were evaluated for the removal of emerging contaminant diclofenac (DCF) and the underlying me- Adsorption chanism were thoroughly studied. Characterization of biochar was carried out using particle size analyzer, SEM, Biochar BET, FT-IR, XRD, XPS and zeta potential instrument. Pig manure biochar (BC-PM) exhibited excellent removal Interface chemistry −1 eﬃciency (99.6%) over pine wood biochar (BC-PW) at 500 µg L of DCF (environmentally signiﬁcant con- Thermodynamics centration). Intraparticle diﬀusion was found to be the major process facilitated the adsorption. BC-PW followed Mechanisms pseudo ﬁrst-order
Bioresource Technology – Elsevier
Published: Feb 1, 2018
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