Results 41 to 50 of about 157,223 (307)

Flotation Process Optimization of a Copper Molybdenum Polymetallic Ore in Xizang

open access: yesKuangchan zonghe liyong
A low-grade porphyry type silver bearing copper molybdenum ore in Xizang contains 0.35% Cu, 0.018% Mo, 2.18 g/t Ag and 2.5% S. The copper mineral is mainly chalcopyrite, followed by chalcocite.
Lihua ZHOU
doaj   +1 more source

Drainage gas recovery technology for high-sulfur gas wells by a canned ESP system

open access: yesNatural Gas Industry B, 2018
In order to apply the electric submersible pump (ESP) based drainage gas recovery technology commonly used in conventional gas wells to high-sulfur gas wells, and meet the requirements of casing protection in high-sulfur gas wells, we conducted a series ...
Yang Peng   +7 more
doaj   +1 more source

Z‐Scheme Water Splitting Systems Based on Solid‐State Electron Conductors

open access: yesAdvanced Functional Materials, EarlyView.
This review examines the latest advances in Z‐scheme overall water splitting (OWS) systems for solar hydrogen production. These systems consist of suspended or immobilized hydrogen evolution photocatalysts (HEPs) and oxygen evolution photocatalysts (OEPs).
Chen Gu   +3 more
wiley   +1 more source

Investigation on Beneficiation of a Complex Copper-lead-zinc Polymetallic Ore in Qinghai

open access: yesKuangchan zonghe liyong
A copper-lead-zinc polymetallic ore in Qinghai has characteristics of complex ore properties, low copper-lead-zinc content, high sulfur content, and high argillated gangue content, so it is difficult to beneficiate.
Shunfu AO   +6 more
doaj   +1 more source

The experimental study on H2S generation during thermal recovery process for heavy oil from the Eastern Venezuela Basin

open access: yesJournal of Natural Gas Geoscience, 2017
Hydrogen sulfide (H2S) is toxic, corrosive and environmentally damaging. It is not only found in oil and gas development, but is also often found in heavy oil exploitation.
Jingkui Mi   +5 more
doaj   +1 more source

Method for producing oxygen from lunar materials [PDF]

open access: yes, 1993
This invention is related to producing oxygen from lunar or Martian materials, particularly from lunar ilmenite in situ. The process includes producing a slurry of the minerals and hot sulfuric acid, the acid and minerals reacting to form sulfates of the
Sullivan, Thomas A.
core   +1 more source

Laser‐Induced Graphene from Waste Almond Shells

open access: yesAdvanced Functional Materials, EarlyView.
Almond shells, an abundant agricultural by‐product, are repurposed to create a fully bioderived almond shell/chitosan composite (ASC) degradable in soil. ASC is converted into laser‐induced graphene (LIG) by laser scribing and proposed as a substrate for transient electronics.
Yulia Steksova   +9 more
wiley   +1 more source

Mechanism and effect insight on stabilizing biological S0 in sulfur-rich wastewater

open access: yesGongye shui chuli
To improve the recovery rate of biological elemental sulfur(S0) in the simultaneous denitrification and sulfur removal process in sulfur wastewater, the effect and mechanism of stabilizing biological S0 in sulfur-rich wastewater were studied.
XU Jinlan   +4 more
doaj   +1 more source

Thermogravimetric and distillation studies on mercury, antimony and arsenic sulfides [PDF]

open access: yes, 1975
Thermogravimetric studies were made on naturally occurring sulfides of mercury, antimony and arsenic to determine activation energies and Arrhenius rates of reaction in vacuum and in atmospheres of air and nitrogen. Of the three sulfides only antimony
Rao, P.D., Town, J.W.
core  

Biokinetics Of microbial consortia using biogenic sulfur as a novel electron donor for sustainable denitrification [PDF]

open access: yes, 2018
In this study, the biokinetics of autotrophic denitrification with biogenic S0 (ADBIOS) for the treatment of nitrogen pollution in wastewaters were investigated. The used biogenic S0, a by-product of gas desulfurization, was an elemental microcrystalline
Collins, Gavin   +7 more
core   +2 more sources

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