首页 | 本学科首页   官方微博 | 高级检索  
   检索      


Molasses as an external carbon source for anaerobic treatment of sulphite evaporator condensate
Authors:Flávio Silva  Helena Nadais  António Prates  Luís Arroja  Isabel Capela
Institution:1. CESAM, Department of Environment and Planning, University of Aveiro, Campus Universitário Santiago, 3810-193 Aveiro, Portugal;2. Caima – Indústria de Celulose, S.A., Constância-Sul, 2250-058 Constância, Portugal;1. Nofer Institute of Occupational Medicine, 8 St Teresy St., 91-348 ?ód?, Poland;2. University of Lodz, Faculty of Chemistry, 163 Pomorska St, 90-236 ?ód?, Poland;3. Textile Research Institute, 118 Gdańska St., 90-520, ?ód?, Poland;1. College of Engineering, Peking University, Beijing 100871, PR China;2. College of Architecture and Environment, Sichuan University, Chengdu 610065, PR China;3. Laboratory of Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, PR China;1. Department of Ocean Sciences, University of California, Santa Cruz, 1156 High St., Santa Cruz, CA 95064, USA;2. Bigelow Laboratory for Ocean Sciences, 60 Bigelow Dr., East Boothbay, ME 04544, USA;3. Observatoire Midi-Pyrénées-14, Avenue Edouard Belin, 31400 Toulouse, France;4. Department of Earth Sciences, Stellenbosch University, Stellenbosch 7602, South Africa;5. Joint Institute for the Study of the Atmosphere and Ocean, The University of Washington and NOAA-Pacific Marine Environmental Laboratory, 7600 Sand Point Way NE, Seattle, WA 98115, USA;6. Oceanography and Marine Sciences, Texas A&M University, 200 Seawolf Parkway, Galveston, TX 77553, USA;7. Lamont Doherty Earth Observatory of Columbia University, PO Box 1000, Palisades, NY 10964, USA;1. Department of Chemistry and Bioscience, Aalborg University, Fredrik Bajers Vej 7H, 9220 Aalborg, Denmark;2. Department of Engineering, Aarhus University, Blichers Allé 20, 8830 Tjele, Denmark
Abstract:Failures in stability and COD removal performance often occurred in full-scale anaerobic reactors treating the evaporator condensate from a sulphite pulp mill due to substrate inhibition and occasional contaminations with red liquor (wood cooking liquor). With this work, the beneficial effect provided by the continuous addition of an external carbon source (sugarcane molasses) on the overall performance and stability of the biological process was evaluated. With a moderate addition of molasses the inhibition was mitigated which led to an increase of the COD removal rate from 52% to 77% and a methane production increase from 460 to 1650 ml d?1 at an organic loading rate of 2.61 g COD l?1 d?1. A similar conclusion can be drawn for the case when contamination with red liquor occurs. These results suggest that sugarcane molasses addition may be regarded as a low-cost operational strategy for the anaerobic treatment of sulphite evaporator condensate.
Keywords:
本文献已被 ScienceDirect 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号