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Seasonal variation in membrane fouling in membrane bioreactors (MBRs) treating municipal wastewater

Taro Miyoshi a,*, Tomoo Tsuyuhara a, Rie Ogyu a, Katsuki Kimura a, Yoshimasa Watanabe b a Division of Built Environment, Hokkaido University, N13W8, Kita-ku, Sapporo 060-8628, Japan b Center for Environmental Nano and Bio Engineering, Hokkaido University, N13W8, Kita-ku, Sapporo 060-8628, Japan a r t i c l e i n f o Article history: Received 16 June 2009 Received in revised form 17 August 2009 Accepted 27 August 2009 Available online 1 September 2009 Keywords: Membrane bioreactor Membrane fouling Seasonal variation a b s t r a c t

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Alternating anoxic feast/aerobic famine condition for improving granular sludge formation in sequencing batch airlift reactor at reduced aeration rate

Junfeng Wan a,b,c, Yolaine Bessie `re a,b,c, Mathieu Spe ´randio a,b,c,* a Universite ´ de Toulouse, INSA, UPS, INP, LISBP, 135 Avenue de Rangueil, F-31077 Toulouse, France b INRA, UMR792 Inge ´nierie des Syste `mes Biologiques et des Proce ´de ´s, F-31400 Toulouse, France c CNRS, UMR5504, F-31400 Toulouse, France a r t i c l e i n f o Article history: Received 27 April 2009 Received in revised form 20 July 2009 Accepted 27 August 2009 Available online 4 September 2009 Keywords: Aerobic granular sludge Anoxic Nitrification Denitrification Sequencing batch airlift reactor (SBAR)

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Comparison of the action spectra and relative DNA absorbance spectra of microorganisms: Information important for the determination of germicidal fluence (UV dose) in an ultraviolet disinfection of water

Ren Zhuo Chen 1, Stephen A. Craik 2, James R. Bolton* Department of Civil and Environmental Engineering, University of Alberta, Edmonton, AB, Canada T6G 2W2 a r t i c l e i n f o Article history: Received 29 June 2009 Received in revised form 21 August 2009 Accepted 24 August 2009 Available online 28 August 2009 Keywords: Bacillus subtilis spores Salmonella typhimurium Ultraviolet Action spectrum DNA absorbance spectrum a b s t r a c t The action spectra of Bacillus subtilis spores (ATCC6633) and Salmonella typhimurium LT2

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Previously uncultured b-Proteobacteria dominate in biologically active granular activated carbon (BAC) filters

R. Maarit Niemi a,*, Ilse Heiskanen b, Riitta Heine c, Jarkko Rapala d a Finnish Environment Institute, Research Programme for Biodiversity, P.O. Box 140, FI-00251 Helsinki, Finland b Finnish Environment Institute, Research Programme for Contaminants and Risks, P.O. Box 140, FI-00251 Helsinki, Finland c National Public Health Institute, Mannerheimintie 166, FI-00300 Helsinki, Finland d Department of Food and Environmental Hygiene, University of Helsinki, P.O. Box 66, FI-00014 Helsinki University, Finland a r t i c l e i n f o Article history: Received 5 June 2009 Received in revised form

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Toxicological and ecotoxic impact of secondary and tertiary treated sewage effluents

M. Petala a, L. Kokokiris b, P. Samaras c, A. Papadopoulos d, A. Zouboulis a,* a Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece b Department of Fisheries Technology and Aquaculture, Alexander Technological and Educational Institute of Thessaloniki, P.O. Box 157, 57200 Moudania, Greece c Department of Pollution Control Technologies, Technological Educational Institute of West Macedonia, 50100 Kozani, Greece d Department of Biology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece a r t i c l e i n f o Article history:

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Life history responses of Daphnia magna feeding on toxic Microcystis aeruginosa alone and mixed with a mixotrophic Poterioochromonas species

Xue Zhang a, Trine Perlt Warming b, Hong-Ying Hu a,*, Kirsten Seestern Christoffersen b a Environmental Simulation and Pollution Control State Key Joint Laboratory, Department of Environmental Science and Engineering, Tsinghua University, Beijing 100084, PR China b Freshwater Biological Laboratory, University of Copenhagen, Helsingørsgade 51, 3400 Hillerød, Denmark a r t i c l e i n f o Article history: Received 18 June 2009 Received in revised form 18 August 2009 Accepted 19 August 2009 Available online 26 August 2009 Keywords: Daphnia magna Life history response Microcystis aeruginosa

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The fate of Transparent Exopolymer Particles (TEP) in integrated membrane systems: Removal through pre-treatment processes and deposition on reverse osmosis membranes

Loreen O. Villacorte a,*, Maria D. Kennedy a, Gary L. Amy a,b, Jan C. Schippers a a UNESCO-IHE, Institute for Water Education, Westvest 7, 2611 AX Delft, The Netherlands b Delft University of Technology, Stevinweg 1, 2628 CN Delft, The Netherlands a r t i c l e i n f o Article history: Received 7 June 2009 Received in revised form 13 August 2009 Accepted 18 August 2009 Available online 28 August 2009 Keywords: Transparent Exopolymer Particles Reverse osmosis Pre-treatment Integrated membrane systems Biological fouling Organic fouling a b s t r a c t

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Storm water runoff measurements of copper from a naturally patinated roof and from a parking space. Aspects on environmental fate and chemical speciation

I. Odnevall Wallinder a,*, Y. Hedberg a, P. Dromberg b a Div. Surface and Corrosion Science, Department of Chemistry, School of Chemical Science and Engineering, KTH, Dr. Kristinas v. 51, SE-100 44 Stockholm, Sweden b Water and Sewage Network Investigations, Stockholm Vatten VA AB, Torsgatan 26, SE-106 36 Stockholm, Sweden a r t i c l e i n f o Article history: Received 20 May 2009 Received in revised form 13 August 2009 Accepted 18 August 2009 Available online 26 August 2009 Keywords: Copper Roof runoff Parking space Chemical speciation Retention a b s t r a c t

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Chemometric approach to validating faecal sterols as source tracer for faecal contamination in water

Norashikin Saim a, Rozita Osman a,*, Dayang Ratena Sari Abg Spian a, Mohd Zuli Jaafar a, Hafizan Juahir b, Md Pauzi Abdullah c, Fuzziawati Ab Ghani d a Faculty of Applied Sciences, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia b Faculty of Environmental Study, Universiti Putra Malaysia, 43000 Serdang, Selangor, Malaysia c Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia d Faculty of Information Technology and Quantitative Science, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia a r t i c l e i n f o

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Chromate reduction by zero-valent Al metal as catalyzed by polyoxometalate

C.J. Lin a, S.L. Wang a, P.M. Huang b, Y.M. Tzou a,*, J.C. Liu c, C.C. Chen d, J.H. Chen a, C. Lin a a Department of Soil & Environmental Sciences, National Chung Hsing University, 250 Kuo-Kuang Road, Taichung, TW 40227, Taiwan, ROC b Department of Soil Science, University of Saskatchewan, 51 Campus Drive, Saskatoon, SK S7N 5A8, Canada c Agricultural Research Institute No.189, Chungcheng Road, Wufong, Taichung County, TW 41301, Taiwan, ROC d Department of Life Science, National Taiwan Normal University, 88 Ting-Chow Road, Sec 4, Taipei, TW 116, Taiwan, ROC a r t i c l e i n f o

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