scholarly journals Chemical evidence from laboratory experiments for biokarst development in the Ordos Basin, northwestern China

2019 ◽  
Vol 98 ◽  
pp. 01015
Author(s):  
Feng’e Zhang ◽  
Sheng Zhang ◽  
Miying Yin ◽  
Ze He ◽  
Xinxin Geng
Keyword(s):  
Laboratory Experiments ◽  
Ordos Basin ◽  
Reaction Times ◽  
Sulphate Reduction ◽  
Rock System ◽  
Bacterial Sulphate Reduction ◽  
The Ordos Basin ◽  
New Perspective ◽  
Reducing Bacteria ◽  
Insight Into

The present work is designed to simulate the dissolution of sulphate rock under various conditions of different bacterial cell numbers, temperatures and reaction times both in water-rock system and water-rock-bacteria systems by laboratory experiment. The rate of sulphate reduction were estimated using the experimental data. The results suggested that the sulphate-reducing bacteria promote the sulphate rock dissolution and increase the amount of dissolved sulphate. The dissolution of sulphate rock driven by bacterial sulphate reduction results in the formation of sulphate rock karst. The research is an insight into biokarst, which provides a new perspective for the field of petroleum geology.

First Evidence of Active Sulphate Reduction in a Lignite Mine Dump Site at Low pH Values – the Plessa Site

2007 ◽  
Vol 20-21 ◽  
pp. 201-204 ◽  
Author(s):  
Annett Storch ◽  
Katja Tröger ◽  
Nils Hoth ◽  
Kay Knöller
Keyword(s):  
Sulphate Reduction ◽  
Mining District ◽  
Dump Site ◽  
Ph Values ◽  
Reducing Conditions ◽  
Lignite Mine ◽  
Bacterial Sulphate Reduction ◽  
Show Evidence ◽  
Main Carbon Source ◽  
Reducing Bacteria

It has been postulated that bacterial sulphate reduction is related to pH-values above 5.5 (e.g. [1]). First investigations for the 80-year old dump Plessa in the Lower Lusatian mining district (East Germany) show evidence for active sulphate reduction. Mining dump waters from the Plessa site have pH values of 2.4 to 4.9 and pe values between 2 and 6. Measured sulphide concentrations range from 50 to 1200 -g/L. The influence of bacterial sulphate reduction on the development of sulphate concentrations in the dump waters is supported by increasing δ34S and δ18O values with decreasing sulphate concentrations. These findings document that sulphate reduction under natural conditions is not exclusively related to neutral pH values and strongly reducing conditions. Furthermore the tertiary organic matter contained in the dump sediments is the main carbon source for sulphate reducing bacteria.

Low-temperature sulphate reduction: biological versus abiological

1985 ◽  
Vol 22 (12) ◽  
pp. 1910-1918 ◽  
Author(s):  
P. A. Trudinger ◽  
L. A. Chambers ◽  
J. W. Smith
Keyword(s):  
Organic Matter ◽  
Low Temperature ◽  
Base Metal ◽  
Ferrous Iron ◽  
Sulphate Reduction ◽  
Base Metal Sulphide ◽  
Metal Sulphide ◽  
Sulphate Reducing Bacteria ◽  
Bacterial Sulphate Reduction ◽  
Reducing Bacteria

Sulphate is considered to have been a major source of sulphide in strata-bound and stratiform base-metal sulphide deposits. Many of these deposits, however, appear to have been formed at moderate temperatures (<200 °C), which poses the question, By what mechanism(s) was sulphate reduced to sulphide? Two modes of reduction have been established experimentally: (1) catalysis by sulphate-reducing bacteria, which at present is only known to occur below ca. 100 °C; and (2) abiological reduction by ferrous iron or organic matter, which has only been clearly shown above ca. 250 °C.Several attempts have been made to demonstrate abiological reduction below 200 °C, and some new data are presented here. Although the results do not exclude the possibility that such a reaction may be geochemically significant, there has been no unequivocal demonstration of nett sulphide formation from sulphate at these temperatures.Recent studies of the microbiology of hydrothermal regions have opened up the prospect of bacterial sulphate reduction at much higher temperatures than had earlier been thought possible.

scholarly journals Positive and negative aspects of suplhate-reducing bacteria in environment and industry

2021 ◽  
Vol 9 (2) ◽  
pp. 147-154
Author(s):  
Alena Luptakova ◽  
Eva Macingova ◽  
Vlasta Harbulakova
Keyword(s):  
Acid Mine Drainage ◽  
Hydrogen Sulphide ◽  
Bacterial Production ◽  
Mine Drainage ◽  
Sodium Lactate ◽  
Sulphate Reduction ◽  
Calcium Lactate ◽  
Sulphate Reducing Bacteria ◽  
Bacterial Sulphate Reduction ◽  
Reducing Bacteria

The submitted work is oriented on the study of two aspects of the sulphate-reducing bacteria metabolism: the metals bioprecipitation and the concrete biodeterioration. The bioprecipitation of metals with the bacterially produced hydrogen sulphide by sulphate-reducing bacteria (SRB) represents the positive effect of the SRB existence in the environment. It allows the industrial exploitation in the area of the removal metals from industrial wastewaters. Referred method involves principal stages such as: hydrogen sulphide bacterial production, metals precipitation by biologically produced hydrogen sulphide, metal sulphides separation, setting pH of the filtrate from previous steps by 1M NaOH and metal hydroxides separation. The basis of the first stage i.e. the hydrogen sulphide bacterial production is the cultivation of SRB. In the laboratory conditions the sodium lactate is the energetic substrate for the growth of bacteria. Its price is not economic for the application in the practice and is needed investigate the alternative substitutes. Therefore was studied the cultivation of sulphate-reducing bacteria to using the selected energetic substrates such as: calcium lactate, glycerol and whey. Experimental studies confirm that all chosen substrates are suitable alternative substrates of sodium lactate for the bacterial sulphate-reduction. In the regard to the efficiency of bacterial sulphate reduction the calcium lactate is the best. The biodeterioration of the concrete presents the negative effect of the SRB existence in the environment. The research was oriented on the simulation of the biodeterioration of concrete samples under the simultaneous influence of the sulphur-oxidising bacteria genera Acidithiobacillus thiooxidans and sulphatereducing bacteria genera Desulfovibrio in the environs of the waste water, the acid mine drainage, the nutrient medium and the distilled water. The observation of the surface structure changes of concrete samples confirms the highest biodeterioration influences in the case of the acid mine drainage application.

Insight into the Pore Structure of Tight Gas Sandstones: A Case Study in the Ordos Basin, NW China

2017 ◽  
Vol 31 (12) ◽  
pp. 13159-13178 ◽  
Author(s):  
Hao Wu ◽  
Youliang Ji ◽  
Ruie Liu ◽  
Chunlin Zhang ◽  
Sheng Chen
Keyword(s):  
Pore Structure ◽  
Ordos Basin ◽  
Tight Gas ◽  
Nw China ◽  
The Ordos Basin ◽  
Tight Gas Sandstones ◽  
Insight Into

Music, Markets and Consumption

2013 ◽  
Author(s):  
Dr Daragh O’Reilly ◽  
Dr Gretchen Larsen ◽  
Dr Krzysztof Kubacki
Keyword(s):  
Cultural Studies ◽  
Popular Music ◽  
Music Business ◽  
Consumer Studies ◽  
Arts Marketing ◽  
New Perspective ◽  
Insight Into

A fully international and scholarly analysis integrating the unique popular music sector both within arts marketing and current marketing and consumption theories. Music, Markets and Consumption offers an up-to-date business-theoretical reading of the music business which complements viewpoints from other disciplines. It will be a much needed new perspective for students and scholars in music studies, cultural studies, marketing and consumer studies who wish to gain further insight into commercial aspects of music.

PORE STRUCTURE OF TRANSITIONAL SHALES IN THE ORDOS BASIN, NW CHINA: EFFECTS OF COMPOSITION ON GAS STORAGE MECHANISM

2017 ◽  
Author(s):  
Fengyang Xiong ◽  
◽  
Zhenxue Jiang ◽  
Mohammad Amin Amooie ◽  
Mohamad Reza Soltanian ◽  
...  
Keyword(s):  
Pore Structure ◽  
Ordos Basin ◽  
Gas Storage ◽  
Nw China ◽  
Storage Mechanism ◽  
The Ordos Basin

scholarly journals Correction to: Thickening-upward cycles in deep-marine and deep-lacustrine turbidite lobes: examples from the Clare Basin and the Ordos Basin

2020 ◽  
Vol 9 (1) ◽  
Author(s):  
Lei-Fu Zhang ◽  
Da-Zhong Dong
Keyword(s):  
Ordos Basin ◽  
The Ordos Basin

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