Bioresource Technology 255 (2018) 76–82 Contents lists available at ScienceDirect Bioresource Technology journal homepage: www.elsevier.com/locate/biortech Enhancing forward osmosis water recovery from landﬁll leachate by desalinating brine and recovering ammonia in a microbial desalination cell Syeed Md Iskander, John T. Novak, Zhen He Department of Civil and Environmental Engineering, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA GR APHICAL A BSTRACT ARTICLE I NFO ABSTRACT Keywords: In this work, a microbial desalination cell (MDC) was employed to desalinate the FO treated leachate for re- Forward osmosis duction of both salinity and chemical oxygen demand (COD). The FO recovered 51.5% water from a raw lea- Microbial desalination cell chate and the recovery increased to 83.5% from the concentrated leachate after desalination in the MDC fed with Landﬁll leachate either acetate or another leachate as an electron source and at a diﬀerent hydraulic retention time (HRT). Easily- Ammonia degraded substrate like acetate and a long HRT resulted in a low conductivity desalinated eﬄuent. Ammonia Water recovery was also recovered in the MDC cathode with a recovery eﬃciency varying from 11 to 64%, aﬀected by current generation and HRT. Signiﬁcant COD reduction, as high as 65.4%, was observed in the desalination
Bioresource Technology – Elsevier
Published: May 1, 2018
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