TY - JOUR
T1 - Reduction of COD in refinery wastewater through adsorption on date-pit activated carbon
AU - El-Naas, Muftah H.
AU - Al-Zuhair, Sulaiman
AU - Alhaija, Manal Abu
N1 - Funding Information:
The authors would like to acknowledge the financial support provided by the Japan Cooperation Center, Petroleum (JCCP) and the technical support of the Nippon Oil Research Institute Co., Ltd (NORI) . They would also like to thank Abu Dhabi Oil Refining Company (TAKREER) and the Research Affairs at the UAE University for their support. Special thanks are also due to Sami Abdulla for his help with the experimental work.
PY - 2010/1/15
Y1 - 2010/1/15
N2 - Experiments were carried out to evaluate the batch adsorption of COD from petroleum refinery wastewater on a locally prepared date-pit activated carbon (DP-AC), and its adsorption effectiveness was compared to that of commercially available BDH activated carbon (BDH-AC). Adsorption equilibrium and kinetic data were determined for both adsorbents and fitted to several adsorption isotherm and kinetics models, respectively. The Langmuir monolayer isotherm fitted well the equilibrium data of COD on both adsorbents; whereas, the kinetics data were best fitted by the pseudo-second order model. Modeling of the controlling mechanisms indicated that both intrinsic kinetics and mass transfer contributed to controlling the adsorption process. Mass transfer seemed to be the dominant mechanism at low COD content, while intrinsic kinetics dominates at high concentrations. In general, the adsorption effectiveness of locally prepared DP-AC was proven to be comparable to that of BDH-AC. Therefore, DP-AC can be utilized as an effective and less expensive adsorbent for the reduction of COD in refinery wastewater.
AB - Experiments were carried out to evaluate the batch adsorption of COD from petroleum refinery wastewater on a locally prepared date-pit activated carbon (DP-AC), and its adsorption effectiveness was compared to that of commercially available BDH activated carbon (BDH-AC). Adsorption equilibrium and kinetic data were determined for both adsorbents and fitted to several adsorption isotherm and kinetics models, respectively. The Langmuir monolayer isotherm fitted well the equilibrium data of COD on both adsorbents; whereas, the kinetics data were best fitted by the pseudo-second order model. Modeling of the controlling mechanisms indicated that both intrinsic kinetics and mass transfer contributed to controlling the adsorption process. Mass transfer seemed to be the dominant mechanism at low COD content, while intrinsic kinetics dominates at high concentrations. In general, the adsorption effectiveness of locally prepared DP-AC was proven to be comparable to that of BDH-AC. Therefore, DP-AC can be utilized as an effective and less expensive adsorbent for the reduction of COD in refinery wastewater.
KW - Adsorption
KW - COD reduction
KW - Controlling mechanism
KW - Date-pit
KW - Petroleum refinery
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U2 - 10.1016/j.jhazmat.2009.09.002
DO - 10.1016/j.jhazmat.2009.09.002
M3 - Article
C2 - 19783364
AN - SCOPUS:71749090771
SN - 0304-3894
VL - 173
SP - 750
EP - 757
JO - Journal of Hazardous Materials
JF - Journal of Hazardous Materials
IS - 1-3
ER -