Results 141 to 150 of about 4,031 (190)
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Anaerobic treatment of acidified and non‐acidified substrata in UASB reactors
Journal of Chemical Technology & Biotechnology, 1999The selection of a suitable sludge which will be the inoculum of the reactor is the first step in the start-up procedure of an anaerobic reactor. The sludge selected (inoculum) for this study was obtained from a UASB (Up-flow Anaerobic Sludge Bed) reactor used for the treatment of alcohol industry wastewaters.
Ana Elías +4 more
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Lake Änketjärn, a Non-Acidified Lake in an Acidified Region
Oikos, 1985Analyse et discussion des changements chimiques et biologiques intervenus dans ce lac, non acidifie, pendant la periode 1967 a 1982, alors qu'il est situe dans une region acidifiee et entoure de lacs soumis a une ...
Greta Morling +2 more
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Deposition of Acidifying Compounds
1992Inputs of acidifying compounds to terrestrial ecosystems include deposition of the gases NO 2 NO, HNO 2, HNO 3, PAN, NH 3, SO 2 and the ions NO 3-, NH4 +, SO4 2- and H + in precipitation, cloud droplets and particles. Recent research has identified particular ecosystems and regions in which terrestrial effects are closely linked with specific ...
Fowlera, D. +6 more
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Deposition of acidifying compounds in Sweden
Water, Air, & Soil Pollution, 1995The Swedish Environmental Research Institute (IVL) has monitored deposition of acidifying compounds in Sweden. The monitoring programmes were initiated by various air quality protection associations, and regional forest and environmental authorities.
E. Hallgren Larsson +3 more
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A classification of acidified catchments in Britain
Environmental Pollution, 1992To compare catchments of possible acidified waters in Britain an extensive database was compiled for nearly 600 catchments of lakes and streams for which chemical data were available. Information on the database included map-derived data, pollutant deposition estimates and hydrological characteristics.
K R, Bull, J R, Hall
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Decomposition of thiosulphate in acidified oxidants
Talanta, 1967The Wollack procedure has been used to study the competition between oxidant and acid for the thiosulphate ion. In concentrated hydrochloric acid solutions of iodine, iodate and chloramine-T, polythionates are the chief products, whereas in acid permanganate substantial amounts of other products occur.
G W, Latimer, E I, Stetcko
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Effects of pH and temperature on heterotrophic bacteria in acidified and non‐acidified lochs
Journal of Applied Bacteriology, 1993An investigation into the impact of acidification on bacterial populations in Scottish lochs revealed that in the range pH 3.8–6.5, increasing acidity had little effect on activities and diversities of aerobic heterotrophs. Only one organism, a Cytophaga species, showed reduced numbers at ...
J. Rattray, N.A. Logan
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Disinfection of Bacillus spores with acidified nitrite
Chemosphere, 2014Disinfecting water generated from a bioterrorism contamination event will require large amounts of disinfectant since the volume of water flushed from a drinking water distribution system or wash water collected from a contaminated outdoor area can accumulate quickly.
Jeffrey G, Szabo +2 more
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Study of the Toxicological Mechanism of Acidified Aerosols
Biological Trace Element Research, 2002More than 30 aerosol samples were collected from 1 place near Zaojiaban Road (downtown of Shanghai) and 1 village near Jiading country (suburb) by a stacked-filter air sampler. The coarse particulates (>2.5 microm) and the fine particulates (PM2.5) and their unsoluble parts were analyzed by proton-induced X-ray emission.
Yongpeng, Tong +5 more
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Liming acidified lakes and ponds [PDF]
, 2013 Louis A. Helfrich, Richard J.
Helfrich, Louis A. +2 more
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