Bio–reduction of para-chloronitrobenzene (p-CNB) in Drinking Water Using a Continuous Stirring Hollow Membrane Biofilm Reactor
Abstract:para-chloronitrobenzene (p-CNB) is a compound that is particularly harmful and persistent in the environment and is one of the priority pollutants, which is widely used as intermediates for chemical syntheses of drugs, herbicides, dyes, etc. A feasible degradation pathway for para-chloronitrobenzene is bio-reduction with H2 as the electron donor. The proposed pathway involves two complete steps that lead to para-chloraniline (p-CAN) and aniline (AN). This study investigated the bio-reduction of p-CNB in a H2-based membrane biofilm reactor that also is active in nitrate and sulfate conditions. p-CNB was bio-reduced to p-CAN in major extent (at least 93% from day 105 to 110) and AN of 384 μg/L in MBfR in which the fluxes were dominate by nitrate and sulfate reductions. A good bio-reduction effect could be got by the new continuous stirred MBfR using PVC membranes, and the maximum p-CNB reduction rate achieved was at 3.57 g/m3·d. Denitrification was achieved nearly completely with 0.2 mg/L NO3 --N in effluent, and sulfate reduction was limited by H2 with 37.4 mg/L in effluent. The results showed that the hollow membrane biofilm reactor is a feasible way for treatment of drinking water contaminated with p-CNB.
Document Type: Research Article
Publication date: 2010-01-01
More about this publication?
- Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed. A subscription to the Proceedings of the Water Environment Federation includes access to most papers presented at the annual WEF Technical Exhibition and Conference (WEFTEC) and other conferences held since 2000. Subscription access begins 12 months after the event and is valid for 12 months from month of purchase. A subscription to the Proceedings of the Water Environment Federation is included in Water Environment Federation (WEF) membership.
WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access. Access begins 12 months after the conference or event
- Subscribe to this Title
- Membership Information
- About WEF Proceedings
- WEFTEC Conference Information
- Learn about the many other WEF member benefits and join today
- Ingenta Connect is not responsible for the content or availability of external websites