Hydrogenotrophic denitrification of drinking water using a hollow fibre membrane bioreactor

Abstract

Research Article| May 01 2001 Hydrogenotrophic denitrification of drinking water using a hollow fibre membrane bioreactor Sarina J. Ergas; Sarina J. Ergas 1Department of Civil and Environmental Engineering, University of Massachusetts, 18 Marston Hall, Amherst, MA 01003, USATel: 413-545-3424; Fax: 413-545-2202; E-mail: ergas@ecs.umass.edu, http://www.ecs.umass.edu/cee/faculty/ergas.htmlgradient E-mail: ergas@ecs.umass.edu Search for other works by this author on: This Site PubMed Google Scholar Andreas F. Reuss Andreas F. Reuss 2Procter & Gamble GmbH & Co. Manufacturing, OHG Industriepark Am Silberberg 53877, Euskirchen, Germany, 2251-121030 E-mail: reuss.a@pg.com Search for other works by this author on: This Site PubMed Google Scholar Journal of Water Supply: Research and Technology-Aqua (2001) 50 (3): 161–171. https://doi.org/10.2166/aqua.2001.0015 Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Share Icon Share Twitter LinkedIn Tools Icon Tools Cite Icon Cite Permissions Search Site Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAll JournalsThis Journal Search Advanced Search Citation Sarina J. Ergas, Andreas F. Reuss; Hydrogenotrophic denitrification of drinking water using a hollow fibre membrane bioreactor. Journal of Water Supply: Research and Technology-Aqua 1 May 2001; 50 (3): 161–171. doi: https://doi.org/10.2166/aqua.2001.0015 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex The objective of this research was to investigate the performance of a hollow fibre membrane bioreactor (HFMB) for hydrogenotrophic denitrification of contaminated drinking water. In the HFMB, H2 flows through the lumen of the hydrophobic hollow fibres and diffuses to an attached H2 oxidizing biofilm. Nitrate in the contaminated water serves as an electron acceptor. A hydrogenotrophic denitrifying culture was enriched from a wastewater seed. Batch culture experiments were conducted to compare heterotrophic (methanol as electron donor) and hydrogenotrophic denitrification rates and to investigate the conditions required for the HFMB studies. The batch cultures demonstrated mixotrophy, with denitrification rates of 30 g NO−3-N m−3 d−1 for heterotrophic and 18 g NO−3-N m−3 d−1 for hydrogenotrophic conditions. A laboratory-scale HFMB was constructed that utilized 2,400 polypropylene hollow fibres with an inner diameter of 200 µm, an outer diameter of 250 µm and a 0.05 µm pore size. After a 70-day start-up period, the NO−3 loading rate was gradually increased over a three-month period. The NO−3 utilization rate reached a maximum of 770 g NO−3-N m−3 d−1 at an influent NO−3 concentration of 145 mg NO−3-N l−1 and a hydraulic residence time of 4.1 hours. Influent NO−3 concentrations of up to 200 mg NO−3-N l−1 were almost completely denitrified. Tests with contaminated water from the Cape Cod aquifer resulted in an increase in product water turbidity and dissolved organic carbon (DOC) concentrations. biological denitrification, bioreactor, drinking water, hydrogen, membranes, nitrate This content is only available as a PDF. © IWA Publishing 2001 You do not currently have access to this content.