Results 21 to 30 of about 1,362,804 (251)

Combined Process of Biogenic Manganese Oxide and Manganese-Oxidizing Microalgae for Improved Diclofenac Removal Performance: Two Different Kinds of Synergistic Effects

open access: yesToxics, 2022
Biogenic manganese oxides (Bio-MnOx) have attracted considerable attention for removing pharmaceutical contaminants (PhCs) due to their high oxidation capacity and environmental friendliness.
Quanfeng Wang   +7 more
doaj   +1 more source

Research of the Application of Roasting in the Processing of the Foamy Product of the Process of Bacterial Oxidation of Flotation Concentrate in a Separate Cycle [PDF]

open access: yesE3S Web of Conferences, 2021
Among the methods of preliminary opening of refractory gold before sorption cyanidation, the technology of bacterial oxidation is widely used today. Although this technology has many advantages, the specialists of most enterprises around the world using ...
Khamidov Rustam   +2 more
doaj   +1 more source

Bio-Oxidation of a Double Refractory Gold Ore and Investigation of Preg-Robbing of Gold from Thiourea Solution

open access: yesMetals, 2020
Carbonaceous sulfidic gold ores are commonly double refractory and thus require pretreatment before gold extraction. In this paper, the capacity of pre-bio-oxidation can simultaneously decompose sulfides or deactivate carbonaceous matters (CM) from a ...
Rui Xu   +6 more
doaj   +1 more source

Exploring Effective Bio-Cover Materials for Mitigating Methane Emission at a Tropical Landfill

open access: yesApplied Sciences, 2023
Methane emission and oxidation in different bio-cover materials, i.e., sandy loam, compost, and stabilized wastes, were investigated at a municipal solid waste landfill in Thailand.
Rathborey Chan   +2 more
doaj   +1 more source

Prerequisites for Processing a Foam Product in the Process of Bacterial Oxidation of Gold-Bearing Concentrates in a Separate Cycle [PDF]

open access: yesE3S Web of Conferences, 2021
The recovery of gold from refractory ores and concentrates is a significant problem in the modern gold processing industry. The use of bacterial oxidation technology at the Navoi Mining and Metallurgical Combine (Uzbekistan) made it possible to increase ...
Khamidov Rustam   +2 more
doaj   +1 more source

Biostimulant Potential of Humic Acids Extracted From an Amendment Obtained via Combination of Olive Mill Wastewaters (OMW) and a Pre-treated Organic Material Derived From Municipal Solid Waste (MSW)

open access: yesFrontiers in Plant Science, 2018
Olive mill wastewaters (OMW) contain significant levels of phenolic compounds with antimicrobial/phytotoxic activity and high amounts of undecomposed organic matter that may exert negative effects on soil biology.
Giuseppe Palumbo   +5 more
doaj   +1 more source

Effect of Carbon Sources on Pyrite-Arsenopyrite Concentrate Bio-oxidation and Growth of Microbial Population in Stirred Tank Reactors

open access: yesMicroorganisms, 2021
Tank bio-oxidation is a biohydrometallurgical technology widely used for metal recovery from sulfide concentrates. Since carbon availability is one of the key factors affecting microbial communities, it may also determine the rate of sulfide concentrate ...
Aleksandr Bulaev   +3 more
doaj   +1 more source

Investigation of engine performance and exhaust gas emissions by using bio-diesel in compression ignition engine and optimisation of bio-diesel production from feedstock by using response surface methodology [PDF]

open access: yes
Bio-diesel, derived from the transesterification of vegetable oils or animal fats with simple alcohols, has attracted more and more attention recently. As a cleaner burning diesel alternative, bio-diesel claims to have many attractive features including:
Abuhabaya, Abdullah
core   +3 more sources

An investigation into the use of batch experiments in the determination of the kinetics of ferrous-iron oxidation by Leptospirillum ferrooxidans [PDF]

open access: yes, 2000
Bibliography: leaves 60-64.The objectives of this research were to investigate the effect of temperature and pH on the bacterial ferrous-iron oxidation by Leptospirillum ferrooxidans in batch culture and compare these results with those previously ...
Dempers, Christian John Nicholas
core   +1 more source

Reduction of methane emission from landfills using bio-mitigation systems – from lab tests to full scale implementation [PDF]

open access: yes, 2014
Landfills are significant sources of methane, which contributes to climate change. As an alternative to mitigation by gas utilization systems, bio-mitigation systems may be implemented.
Kjeldsen, Peter, Scheutz, Charlotte
core  

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