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A comparison of several nanoscale photocatalysts in the degradation of a common pollutant using LEDs and conventional UV light

A comparison of several nanoscale photocatalysts in the degradation of a common pollutant using LEDs and conventional UV light Jyoti P. Ghosha, Ruohong Suib, Cooper H. Langfordb,*, Gopal Acharia, Curtis P. Berlinguetteb aDepartment of Civil Engineering, University of Calgary, 2500 University Drive, Calgary, Alberta T2N 1N4, Canada bDepartment of Chemistry, University of Calgary, 2500 University Drive, Calgary, Alberta T2N 1N4, Canada a r t i c l e i n f o Article history: Received 2 April 2009 Received in revised form 12 July 2009 Accepted 21 July 2009 Published online 25 July 2009 Keywords:

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Hydrolysis of macromolecular components of primary and secondary wastewater sludge by thermal hydrolytic pretreatment

Christopher A. Wilson*, John T. Novak Department of Civil and Environmental Engineering, Virginia Polytechnic Institute and State University, 418 Durham Hall, Blacksburg, VA 24061, USA a r t i c l e i n f o Article history: Received 4 March 2009 Received in revised form 13 May 2009 Accepted 20 July 2009 Published online 24 July 2009 Keywords: Ammonia Lipid Methanogenic inhibition Polysaccharide Protein Sludge minimization Thermal hydrolysis a b s t r a c t

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Adsorption of Cu(II), Cd(II) and Pb(II) from aqueous single metal solutions by succinylated twice-mercerized sugarcane bagasse functionalized with triethylenetetramine

Leandro Vinı´cius Alves Gurgel, Laurent Fre ´de ´ric Gil* Departamento de Quı´mica, Instituto de Cie ˆncias Exatas e Biolo ´gicas, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, 35400-000 Ouro Preto, Minas Gerais, Brazil a r t i c l e i n f o Article history: Received 17 March 2009 Received in revised form 5 July 2009 Accepted 11 July 2009 Published online 18 July 2009 Keywords: Mercerization Sugarcane bagasse Internal anhydride Heavy metals Adsorption a b s t r a c t This study describes the preparation of two new chelating materials, MMSCB 3 and 5,

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Gel-forming exopolysaccharides explain basic differences between structures of aerobic sludge granules and floccular sludges

Thomas Sevioura, Maite Pijuana, Timothy Nicholsonb, Ju ¨rg Kellera, Zhiguo Yuana,* aThe University of Queensland, Advanced Water Management Centre (AWMC), St. Lucia, Brisbane, QLD 4072, Australia bThe University of Queensland, Division of Chemical Engineering, St. Lucia, Brisbane, QLD 4072, Australia a r t i c l e i n f o Article history: Received 13 May 2009 Received in revised form 6 July 2009 Accepted 11 July 2009 Published online 18 July 2009 Keywords: Aerobic sludge granules Extracellular polymeric substances Hydrogels Sol-gel transition Floccular sludge a b s t r a c t

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Simultaneous nitrification/denitrification in a biofilm airlift suspension (BAS) reactor with biodegradable carrier material

Evelyn Waltersa,b, Andrea Hillea, Mei Hea, Clemens Ochmannc, Harald Horna,* aInstitute of Water Quality Control, Technische Universita ¨t Mu ¨nchen, Am Coulombwall, 85748 Garching, Germany bCenter for Environmental Biotechnology, The Biodesign Institute at Arizona State University, Tempe, AZ 85287, USA cVertUm GmbH, Kirschallee 1, 04416 Markkleeberg, Germany a r t i c l e i n f o Article history: Received 28 February 2009 Received in revised form 3 July 2009 Accepted 7 July 2009 Published online 27 July 2009 Keywords: Biofilm Airlift reactor Biocompound carrier Simultaneous

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Characterization of microbial trophic structures of two anaerobic bioreactors processing sulfate-rich waste streams

A.M. Brionesa,1, B.J. Daughertyb, L.T. Angenentc, K. Rauschd, M. Tumblesond, L. Raskina,* aDepartment of Civil and Environmental Engineering, University of Michigan, 1351 Beal Ave, 107 EWRE Bldg, Ann Arbor, MI 48109-2125, USA bCarollo Engineers, Broomfield, CO 80021, USA cDepartment of Biological and Environmental Engineering, Cornell University, Ithaca, NY 14853, USA dDepartment of Agricultural and Biological Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA a r t i c l e i n f o Article history: Received 16 December 2008 Received in revised form 20 May 2009

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Effect of inorganic ions on the solar detoxification of water polluted with pesticides

J. Solera, A. Garcı´a-Ripolla, N. Hayeka, P. Miro ´b,1, R. Vicentea, A. Arquesa,*, A.M. Amata,2 aGrupo de Procesos de Oxidacio ´n Avanzada, Departamento de Ingenierı´a Textil y Papelera, Universidad Polite ´cnica de Valencia, Campus de Alcoy, Plaza Ferrandiz y Carbonell s/n, 03801 Alcoy, Spain bDepartamento de Estadı´stica e Investigacio ´n Operativa Aplicadas y Calidad, Universidad Polite ´cnica de Valencia, Campus de Alcoy, Plaza Ferrandiz y Carbonell s/n, 03801 Alcoy, Spain a r t i c l e i n f o Article history: Received 29 April 2009 Received in revised form 2 July 2009

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Sulfur transformation in rising main sewers receiving nitrate dosage

Guangming Jiang, Keshab Raj Sharma, Albert Guisasola1, Jurg Keller, Zhiguo Yuan* Advanced Water Management Centre, The University of Queensland, Gehrmann Building (60), Level 4, St. Lucia Campus, Research Road, Brisbane, Queensland 4067, Australia a r t i c l e i n f o Article history: Received 27 April 2009 Received in revised form 30 June 2009 Accepted 2 July 2009 Published online 8 July 2009 Keywords: Sulfide Elemental sulfur Sulfate Sewer Sulfur transformation Nitrate a b s t r a c t The anoxic and anaerobic sulfur transformation pathways in a laboratory-scale sewer

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Development of polymer-based nanosized hydrated ferric oxides (HFOs) for enhanced phosphate removal from waste effluents

Bingjun Pana, Jun Wua, Bingcai Pana,*, Lu Lva, Weiming Zhanga, Lili Xiaoa, Xiaoshu Wangb, Xiancong Taob, Shourong Zhenga aState Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210093, PR China bModern Analysis Center, Nanjing University, Nanjing 210093, PR China a r t i c l e i n f o Article history: Received 27 April 2009 Received in revised form 28 June 2009 Accepted 30 June 2009 Published online 4 July 2009 Keywords: Phosphate Enhanced removal Hydrated ferric oxide Anion exchanger Nanocomposite a b s t r a c t

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Adsorption mechanism of selenate and selenite on the binary oxide systems

Ya Ting Chana, Wen Hui Kuanb, Tsan Yao Chenc, Ming Kuang Wanga,* aDepartment of Agricultural Chemistry, National Taiwan University, Taipei, 10617, Taiwan bDepartment of Environmental and Safety Engineering, Ming-Chi University of Technology, Taipei County, 243, Taiwan cDepartment of Engineering and System Sciences, National Tsing Hua University, Hsin-Chu, 30043, Taiwan a r t i c l e i n f o Article history: Received 6 January 2009 Received in revised form 29 June 2009 Accepted 30 June 2009 Published online 4 July 2009 Keywords: Binary oxide systems Selenium oxyanions

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