Биология

Removal of arsenic from water: Effect of calcium ions on As(III) removal in the KMnO4–Fe(II) process

Xiaohong Guana,*, Jun Maa,b,*, Haoran Donga, Li Jianga aState Key Lab of Urban Water Resource and Environment (HIT), Harbin Institute of Technology, Harbin, PR China bNational Engineering Research Center of Urban Water Resources, Harbin Institute of Technology, Harbin 150090, PR China a r t i c l e i n f o Article history: Received 23 September 2008 Received in revised form 5 December 2008 Accepted 30 December 2008 Available online 20 January 2009 Keywords: As(III) Drinking water Permanganate Fe(II) Fe(III) formed in situ Calcium a b s t r a c t

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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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