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In this study, the impact of COD/SO ratio in sewage on methane and hydrogen sulfide production in sewer biofilms was investigated by using three identical lab-scale gravity sewer systems. The results showed that the COD/SO played a key role in the competition between methanogenic archaea (MA) and sulfate reducing bacteria (SRB). Both the lowest methane and hydrogen sulfide production were obtained at COD/SO ratio of 6. The carbon transformation revealed that the activity of both MA and SRB was inhibited at this COD/SO ratio. Methanosarcina and Methanobacterium were the two dominant MA, while Desulfonema, Desulfotomaculum and Desulfovibrio were the dominant SRB in this case. The specific SRB activity measured by batch tests proved that acetate was mainly degraded by the MA, while propionate was the preferred substrate for the SRB.
This article was published in the following journal.
Name: Journal of environmental management
Endogenously produced hydrogen sulfide was proposed to be an underlying mechanism of lifespan extension via methionine restriction. However, hydrogen sulfide regulation and its beneficial effects via ...
Co-digesting liquid swine manure and brewery wastewater for hydrogen and methane production was studied using an integrated, two-phase system with different organic loading rates (OLR) under mesophili...
Anaerobic digestion for biogas production is one of the most used technology for bioenergy. However, the adoption of nanoparticles still needs further studies. Therefore, this study was designed to ex...
Hydrogen sulfide induced corrosion of concrete sewer pipes is a major issue for wastewater utilities globally. One of the most commonly used methods to combat hydrogen sulfide is the addition of ferri...
Ferric salt dosing is widely used to mitigate sulfide and methane emissions from sewers. In gravity sewers with sediments, responses of sulfate-reducing bacteria (SRB) and methanogenic archaea (MA) re...
Oral malodor is a common condition. In most cases this condition results from the proteolytic activity of anaerobic oral bacteria. These bacteria produce volatile sulfide compounds which a...
The purpose of the study is to establish an in-vitro method to evaluate the effect of probiotics on gas production in feces (hydrogen and methane)
Acute myocardial infarction (AMI) can cause heart failure, an irregular heartbeat, cardiogenic shock, or cardiac arrest. It is the major cause of morbidity and mortality in the general pop...
Irritable bowel syndrome (IBS) is a gastrointestinal (GI) syndrome characterized by chronic abdominal pain and altered bowel habits in the absence of any organic cause. The symptoms of IBS...
A Randomized, Double-Blind, Parallel-Group, Placebo-Controlled, Multi-Dose Study of the Effect of Two Dosage Strengths of SYN-010 Compared with Placebo on Breath Methane Production in Brea...
A combustible, gaseous mixture of low-molecular weight PARAFFIN hydrocarbons, generated below the surface of the earth. It contains mostly METHANE and ETHANE with small amounts of PROPANE; BUTANES; and higher hydrocarbons, and sometimes NITROGEN; CARBON DIOXIDE; HYDROGEN SULFIDE; and HELIUM. (from McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
A species of EDWARDSIELLA distinguished by its hydrogen sulfide production. (From Bergey's Manual of Determinative Bacteriology, 9th ed)
A class of cardiovascular drugs indicated for hypertension and congestive heart failure that simultaneously inhibit both NEUTRAL ENDOPEPTIDASE and ANGIOTENSIN CONVERTING ENZYME. They increase the availability of NATRIURETIC PEPTIDES and BRADYKININ and inhibit production of ANGIOTENSIN II.
A NADPH-dependent oxidase that reduces hydrogen sulfite to HYDROGEN SULFIDE. It is found in many microoganisms.
A method of simultaneously imaging and measuring elements at the submicron level. Nuclear microscopy uses a focused high-energy ion beam of PROTONS and ALPHA PARTICLES (a nuclear microprobe) to interact with the sample. The resulting emitted radiations are analyzed by a group of techniques simultaneously: PARTICLE INDUCED X RAY EMISSION SPECTROMETRY for minor and trace element identification; Rutherford Backscattering Spectroscopy to assess sample thickness and bulk elements such as carbon, hydrogen, oxygen, and nitrogen; and Scanning Transmission Ion Microscopy to assess sample structure and density.