IngentaConnect Cyclohexane Removal in a Dual-Tube Membrane Bioreactor

Authors: Roberts, Michael¹; England, Ellen²; Bleckmann, Charles²

Source: Bioremediation Journal, Volume 10, Numbers 1-2, -2/January-June 2006 , pp. 5-11(7)

Abstract:

A dual-tube dense-phase silicone rubber membrane bioreactor was investigated for control of cyclohexane-contaminated air as part of a jet propulsion (JP-8) fuel remediation investigation strategy. The reactor was seeded with a mixed bacterial consortium isolated from the water/fuel interface of a JP-8 jet fuel sample and activated sludge, capable of aromatic and cyclic compound biodegradation. Cyclohexane removal ranged from 1.1 to 28.6 mg L −1 , with removal percentages ranging from 4.6% to 37.6%. Removal in the bioreactor ranged from 29.4 to 596.6 mg min −1 m −2 and measured elimination capacities ranged from 46.7 to 947.9 g m −3 h −1 . Removal rates and elimination capacity increased with increasing biofilm growth and with increasing loading rates of cyclohexane. Loading rates ranged from 395.9 to 2189.5 mg min −1 m −2 . Results of this study showed effective removal of cyclohexane using the membrane bioreactor, suggesting that this technology may have applicability for treating vapors contaminated with cyclic hydrocarbons.

Keywords: air; biofilter; biofiltration; bioreactor; cyclohexane; HFMM; hollow fiber; membrane module; membrane; model; silicone

Document Type: Research article

DOI: 10.1080/10889860600734422

Affiliations: 1: United States Air Force School of Aerospace Medicine, Brooks Air Force Base, Texas, USA 2: Department of Systems and Engineering Management, Air Force Institute of Technology, Wright-Patterson Air Force Base, Ohio, USA

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