Performance evaluation and kinetic studies on removal of benzene in up-flow tree bark based biofilter

Autor:	Al-Sinani Jamila, Rajamohan Natarajan, Saravanan Viswanathan
Rok vydání:	2015
Předmět:	Exothermic reaction chemistry.chemical_compound Chromatography Chemistry General Chemical Engineering Kinetics Biofilter Loading rate Analytical chemistry Kinetic energy Saturation (chemistry) Benzene Volumetric flow rate
Zdroj:	Chemical Industry and Chemical Engineering Quarterly. 21:537-545
ISSN:	2217-7434 1451-9372
DOI:	10.2298/ciceq141022010n
Popis:	This study aims to evaluate the feasibility of Phoenix dactylifera tree barks as the novel filter medium in an up flow biofilter employing mixed culture to degrade benzene. The experiments were conducted at different benzene concentrations (1.5 - 6.0 g.m-3) and EBRT (1.2- 4.7 min).The elimination capacity was found to vary linearly with inlet loading rate in the range of 0-306 g.m-3h-1. Removal efficiency of 99% was achieved when the benzene concentration was 1.5 g.m-3and decreased with increase in benzene concentration. Lower flow rates resulted in higher benzene removal efficiency. The concentration profile was observed at different heights of filter media. Temperature increase during biofiltration experiments confirmed the exothermic nature of biofiltration. The carbon dioxide production rate was related to elimination capacity by the equation CPR= 1.76EC+18. A Michaelis-Menten type model was applied and the kinetic constants, maximum elimination capacity ECmax, and saturation constant Ks, were found to be 217.4 g.m-3h-1 and 3.54 g.m-3 respectively.
Databáze:	OpenAIRE
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