Multiphase ozonolysis of organics in wastewater by a novel membrane reactor

Journal Article · Tue Aug 01 04:00:00 EDT 1995 · AIChE Journal

DOI:https://doi.org/10.1002/aic.690410815· OSTI ID:106224

Guha, A K; Shanbhag, V; Sirkar, K K ^[1]; Vaccari, D A; Trivedi, D H ^[2]

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1. New Jersey Inst. of Tech., Newark, NJ (United States). Dept. of Chemical Engineering, Chemistry and Environmental Science
2. Stevens Inst. of Tech., Hoboken, NJ (United States)

Conventional ozonation of recalcitrant organic compounds in wastewater suffers from low transfer rate of ozone into water. The low transfer rate can be enhanced by adding an inert fluorocarbon (FC) liquid immiscible with water but having a much higher solubility for ozone. A novel membrane reactor was studied for the destruction of organic pollutants by using FC liquid simultaneously as a reaction medium and a liquid membrane. The membrane reactor consisted of two sets of microporous and/or non-porous hollow-fiber membranes well-mixed in a cylindrical shell filled with the inert FC liquid. Wastewater was allowed to flow through the lumen of one set of microporous fibers; O{sub 3}-containing gas flowed through the bore of the other set. Oxidative degradation products get partitioned back into the two mobile phases. Degradation of such pollutants as phenol, acrylonitrile, nitrobenzene, trichloroethylene, and toluene in such a reactor is presented. The kinetics of degradation of each pollutant in the two-phase (aqueous-FC) system were studied using batch and semibatch experiments. Simulation results based on a first-order model to predict the behavior of pollutant degradation in such a membrane reactor are compared with experimental data.

• OSTI ID: 106224
• Journal Information: AIChE Journal, Journal Name: AIChE Journal Journal Issue: 8 Vol. 41; ISSN 0001-1541; ISSN AICEAC
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
54 ENVIRONMENTAL SCIENCES
ACRYLONITRILE
ADDITIVES
CHEMICAL REACTION KINETICS
CHLORINATED ALIPHATIC HYDROCARBONS
FLUORINE COMPOUNDS
MASS TRANSFER
MATHEMATICAL MODELS
NITROBENZENE
OZONIZATION
PERFORMANCE TESTING
PHENOL
SUPPORTED LIQUID MEMBRANES
TOLUENE
WASTE WATER
WATER TREATMENT