Results 21 to 30 of about 157,223 (307)

Valuable Element Resources and Comprehensive Utilization in the Tailings of Lala Copper Mine, Sichuan Province

open access: yesKuangchan zonghe liyong, 2023
This is an essay in the field of mining engineering. Lala Copper Mine is a famous copper-iron polymetallic deposit in Sichuan province. In the past several decades of mine production, a large number of industrial solid wastes have been produced, among ...
Bo Zhu   +3 more
doaj   +1 more source

Absorber design in sour natural gas treatment plants: Impact of process variables on operation and economics = Absorberentwurf für Anlagen zur Behandlung von sauren Erdgasen: Einfluss Prozessparameter auf Betriebsführung und Prozesswirtschaftlichkeit [PDF]

open access: yes, 1985
Two models of absorber have been developed which describe the absorption of H2S and CO2 from natural gases by aqueous di-isopropanolamine (DIPA) or methyl-di-ethanolamine (MDEA) solutions. In these models mass transfer, reaction and equilibrium processes
Blauwhoff, P.M.M.   +3 more
core   +2 more sources

Inhibition of microbial sulfate reduction in a flow-through column system by (per)chlorate treatment. [PDF]

open access: yes, 2014
Microbial sulfate reduction is a primary cause of oil reservoir souring. Here we show that amendment with chlorate or perchlorate [collectively (per)chlorate] potentially resolves this issue. Triplicate packed columns inoculated with marine sediment were
Anderson, Gary   +10 more
core   +5 more sources

Experimental isovalthinuria. III. Induction by bile acids, and hypocholesterolemic agents [PDF]

open access: yes, 1963
Some bile acids (dehydrocholic, cholic, chenodeoxycholic, ursodeoxycholic, and deoxycholic acids), and some hypocholesterolemic agents (22, 25 diazacholestanol, 20,25-diazacholesterol, triparanol, and SKF 525-A) are the inducers of isovalthinuria in ...
Ubuka, Toshihiko
core   +1 more source

Mitigating carbon dioxide impact of fossil/bio-refineries by Acid Gas to Syngas technology: sensitivity analysis and techno-economic assessment

open access: yesJournal of Sustainable Development of Energy, Water and Environment Systems, 2021
Hydrogen sulfide is a highly toxic by-product in the refineries. Traditional sulfur recovery units are already used, but optimization studies on them are still limited.
Anna Dell'Angelo   +4 more
doaj   +1 more source

Process Modeling, Optimization and Cost Analysis of a Sulfur Recovery Unit by Applying Pinch Analysis on the Claus Process in a Gas Processing Plant

open access: yesMathematics, 2021
The Claus process is one of the promising technologies for acid gas processing and sulfur recovery. Hydrogen sulfide primarily exists as a byproduct in the gas processing unit. It must be removed from natural gas. The Environmental Protection Agency (EPA)
Muhammad Arslan Zahid   +3 more
doaj   +1 more source

Modeling Acidification Recovery on Threatened Ecosystems: Application to the Evaluation of the Gothenburg Protocol in France [PDF]

open access: yes, 2007
To evaluate the acid deposition reduction negotiated for 2010 within the UNECE LRTAP Gothenburg Protocol, sulphur and nitrogen deposition time-series (1880–2100) were compared to critical loads of acidity on five French ecosystems: Massif Central basalt (
Martinson, Liisa   +2 more
core   +1 more source

Progress on gathering and treatment technologies of high-sulfur natural gas in China

open access: yesYou-qi chuyun, 2022
With the large-scale development of high-sulfur gas reservoirs in China, the matching gathering and treatment technologies of high-sulfur natural gas are being updated constantly. Herein, the development situation of high-sulfur natural gas reservoirs in
Jian ZHANG   +7 more
doaj   +1 more source

Comprehensive Recovery Process of Skarn Type Copper-sulfur Ore Resources

open access: yesKuangchan zonghe liyong
This is an article in the field of mineral processing engineering. For a skarn copper ore, the disseminated particle size is fine, the valuable elements in the ore are Cu, S, Fe and the associated element Ag.
Jing ZHANG   +5 more
doaj   +1 more source

Experimental Study on Activated Sulfur Selection from High Alkalinity Lead Zinc Flotation Tailings [PDF]

open access: yesE3S Web of Conferences
This article takes the flotation tailings of a high sulfur lead-zinc mine in Inner Mongolia as the research object. XRD and BPMA automatic process mineralogical analysis systems are used to analyze the mineral composition of the tailings, and ...
Gao Tengyue   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy