نتایج جستجو برای: hydrogen sulfide removal water treatment

تعداد نتایج: 2121405  

One of the major abiotic stresses limiting the productivity and the geographical distribution of many important crops is low temperature. Hydrogen sulfide (H2S) is an important signaling molecule involved in several stress-resistance processes such as drought, salinity and heavy metal stresses in plants. The aim of this study was to investigate the effects of exogenous H2S...

2005
Reza Iranpour Huub H.J. Cox Marc A. Deshusses Edward D. Schroeder

A literature study was conducted to compare the feasibility of biofilters and biotrickling filters for the treatment of complex odorous waste air containing hydrogen sulfide (H2S), organic reduced sulfur compounds, and chlorinated and nonchlorinated volatile organic compounds (VOCs). About 40 pilot-plant studies and full-scale applications at wastewater treatment plants and other facilities wer...

Journal: :Processes 2022

The effect of the partition coefficient on simulation operation a biotrickling filter treating mixture sulfur compounds was analyzed to evaluate pertinence using Henry’s law in determining its removal capacity. analysis consisted that bio-oxides hydrogen sulfide (H2S), dimethyl (DMS), methyl mercaptan (MM) and disulfide (DMDS) different types models for coefficient: pure water, adjusted from ex...

Journal: :nephro-urology monthly 0
yoshihiro tange department of medical engineering, school of health science, kyushu university of health and welfare yoshinomachi, nobeoka, japan; department of medical engineering, school of health science, kyushu university of health and welfare yoshinomachi, nobeoka, miyazaki, japan. tel/fax: +81-982235592 shingo takesawa department of medical engineering, school of health science, kyushu university of health and welfare yoshinomachi, nobeoka, japan shigenori yoshitake department of medical engineering, school of health science, kyushu university of health and welfare yoshinomachi, nobeoka, japan

background protein-bound toxins such as indoxyl sulfate (is) are not efficiently removed by conventional hemodialysis (hd). objectives to improve the removal of is, we performed an in vitro study to evaluate the effects of high dissolved hydrogen on the dissociation of is from albumin using simulated hd. materials and methods wasted dialysate from peritoneal dialysis was concentrated a hundred ...

2017
Steven A. Poling Carly R. Nelson Jacob T. Sutherland Steve W. Martin

The synthesis and structure of the thiogermanic acids H4Ge4S10 and H2Ge4S9 are reported. A novel preparation method consisting of reacting germanium oxide with liquid hydrogen sulfide containing a trace amount of water is used to form Ge4S104ions. Evaporating the hydrogen sulfide solution at room temperature leaves an unstable H4Ge4S10·xH2O product. The stoichiometry and structure of the therma...

2017
Simone Faller Raphael Seiler Rosa Donus Helen Engelstaedter Alexander Hoetzel Sashko Gregoriev Spassov

Although essential in critical care medicine, mechanical ventilation often results in ventilator-induced lung injury. Low concentrations of hydrogen sulfide have been proven to have anti-inflammatory and anti-oxidative effects in the lung. The aim of this study was to analyze the kinetic effects of pre- and posttreatment with hydrogen sulfide in order to prevent lung injury as well as inflammat...

دهقانزاده ریحانی, رضا, ستاروند, سلیمان, لؤلؤئی, مهشید , ملکوتیان, محمد,

Background and Objective: Hospital waste water due to infectious organisms and other risk factors is important. In this study, the possibility of coliform bacteria removal from hospital waste water using ozone separately and combining with hydrogen peroxide (H2O2 + O3) as a pre-treatment was investigated. Material and Methods: This is an experimental study that in the second moiety of 1392 i...

Journal: :Journal of agricultural and food chemistry 2012
Michael J Hansen Dezhao Liu Lise Bonne Guldberg Anders Feilberg

There is an urgent need to develop odor reduction technologies for animal production facilities, and this requires a reliable measurement technique for estimating the removal of odorants. The purpose of the present experiment was to investigate the application of proton-transfer-reaction mass spectrometry (PTR-MS) for continuous measurements at a biofilter from SKOV A/S installed at a pig produ...

Journal: :Applied and environmental microbiology 2016
Shu-Hong Gao Jun Yuan Ho Lu Fan David J Richardson Zhiguo Yuan Philip L Bond

Hydrogen sulfide produced by sulfate-reducing bacteria (SRB) in sewers causes odor problems and asset deterioration due to the sulfide-induced concrete corrosion. Free nitrous acid (FNA) was recently demonstrated as a promising antimicrobial agent to alleviate hydrogen sulfide production in sewers. However, details of the antimicrobial mechanisms of FNA are largely unknown. Here, we report the ...

Journal: :international journal of occupational and environment medicine 0
a saeedi department of pharmacology and toxicology, school of pharmacy, shiraz university of medical sciences, shiraz, iran a najibi department of pharmacology and toxicology, school of pharmacy, shiraz university of medical sciences, shiraz, iran a mohammadi-bardbori department of pharmacology and toxicology, school of pharmacy, shiraz university of medical sciences, shiraz, iran

background: hydrogen sulfide (h 2 s) exhibits both physiological and toxicological roles in the biological systems. acute exposure to high levels of h 2 s is life threatening while long-term exposure to ambient levels of h 2 s elicits human health effects. objective: to study the harmful effects of long-term exposure to low levels of h 2 s on human blood cells. methods: 110 adult workers from i...

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