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Title: Simultaneous treatment of phenol and cyanide containing aqueous solution by adsorption, biotreatment and simultaneous adsorption and biotreatment (SAB) process
Authors: Singh N.
Agarwal B.
Balomajumder, Chandrajit
Published in: Journal of Environmental Chemical Engineering
Abstract: This study presents a comparative study of adsorption and biotreatment process alone with simultaneous adsorption and biotreatment (SAB) process. Adsorption studies were conducted with coconut husk activated carbon (CHAC), as adsorbent. SAB and biodegradation studies were carried out with immobilized and suspended cultures of Serratia odorifera MTCC 5700, respectively. Phenol and cyanide solution were used for all studies with initial concentration of 300 mg/L and 30 mg/L, respectively, initial pH of 8 and temperature of 30 °C. The optimum adsorbent dose was found 30 g/L for adsorption process and SAB process. In SAB process, the removal efficiency was found more than adsorption and biodegradation process and achieved removal efficiency of 89.88% for phenol and 93.06% for cyanide. Three mono components and six multicomponent equilibrium isotherm models were considered. Non-linear regression technique was used for estimation of model parameters. Among tested multicomponent isotherm models Extended Freundlich model found to fit well with the experimental data. The kinetics of microbial growth and biotreatment of phenol and cyanide were also investigated. Haldane's and Monod model have been used to interpret experimental data on phenol and cyanide biotreatment. It was established that simultaneous adsorption and biotreatment process is more effective than biotreatment and adsorption process alone. © 2015 Elsevier Ltd. All rights reserved.
Citation: Journal of Environmental Chemical Engineering(2016), 4(1): 564-575
Issue Date: 2016
Publisher: Elsevier Ltd
Keywords: Adsorption
Isotherm modeling
ISSN: 22133437
Author Scopus IDs: 57211016562
Author Affiliations: Singh, N., Indian Institute of Technology, Department of Chemical Engineering, Roorkee, India
Agarwal, B., Indian Institute of Technology, Department of Chemical Engineering, Roorkee, India
Balomajumder, C., Indian Institute of Technology, Department of Chemical Engineering, Roorkee, India
Funding Details: The authors are grateful to Department of Chemical Engineering and Institute Instrumentation Center of Indian Institute of Technology Roorkee, India for providing facilities and technical support. The authors would also like to thank to Ministry of Human Resource Development (MHRD, New Delhi), Government of India for funding this research work.
Corresponding Author: Singh, N.; Indian Institute of Technology, Department of Chemical EngineeringIndia; email:
Appears in Collections:Journal Publications [CH]

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