Results 91 to 100 of about 2,517 (213)

Peculiarities of a Colloidal Polysaccharide of Newly Isolated Iron Oxidizing Bacteria in Armenia [PDF]

open access: yes, 2017
Microorganisms belonging to different systematic and physiological groups produce various intra- and extracellular polysaccharides, which both play an important role in the life of microorganisms and have great practical application.
Badalyan, H. (Hamlet)   +3 more
core   +1 more source

The Ecology of Acidophilic Microorganisms in the Corroding Concrete Sewer Environment

open access: yesFrontiers in Microbiology, 2017
Concrete corrosion is one of the most significant problems affecting valuable sewer infrastructure on a global scale. This problem occurs in the aerobic zone of the sewer, where a layer of surface corrosion develops on the exposed concrete and the ...
Guangming Jiang   +3 more
doaj   +1 more source

Estudio y puesta en marcha de un sistema de eliminación de ácido sulfhídrico en una corriente de aire, mediante un biofiltro de escurrimiento con Thiobacillus Thioparus inmovilizado en espuma de poliuretano [PDF]

open access: yes, 2006
El objetivo del presente trabajo es el estudio y puesta en marcha de un sistema de eliminación de ácido sulfhídrico en una corriente de aire, mediante el uso de un biofiltro de escurrimiento con Thiobacillus thioparus inmovilizado en espuma de ...
Ramírez, Martín
core  

Molecular systematics of the genus Acidithiobacillus:insights into the phylogenetic structure and diversification of the taxon [PDF]

open access: yes, 2017
The acidithiobacilli are sulfur-oxidizing acidophilic bacteria that thrive in both natural and anthropogenic low pH environments. They contribute to processes that lead to the generation of acid rock drainage in several different geoclimatic contexts ...
Acuña, Lillian G.   +10 more
core   +1 more source

Comparison Of Bioleaching Of Metals From Spent Petroleum Catalyst Using Acidithiobacillus Ferrooxidans And Acidithiobacillus Thiooxidans

open access: yes, 2013
{"references": ["M. Marafi, A. Stanislaus, \"Options and process for spent catalyst handling and utilization\" J. Hazard. Mater. Vol. 101, p.123-132, 2003.", "M. Marafi, A. Stanislaus, \"Spent catalyst waste management: A review Part I-Developments in hydroprocessing catalyst waste reduction and use\" Res. Conserv. Recyc. Vol. 52, p.859-873, 2008.", "D.
Haragobinda Srichandan   +3 more
openaire   +1 more source

Preparation of pyrite-arsenopyrite concentrate for gold leaching through the use of polyreagent complexes

open access: yesГорные науки и технологии, 2016
The article focuses on the causes of refractoriness of sulfide ore stock with superdispersed gold inclusions. In order to increase gold recovery, a hypothesis about effective (peroxide) preparation of refractory raw materials in the process of leaching ...
L. V. Shumilova
doaj   +1 more source

Feasibility study on the microbial separation of iron from slime [PDF]

open access: yes, 2011
Bio-mineral processing is the generic term that describes the processing of metal containing ores, concentrator tailings, newly mined run-of-the-mine (ROM) material, and intermediate to high-grade ores using (micro-) biological technology.
N, Rohini
core  

Bioleaching of chalcopyrite concentrate using Leptospirillum ferriphilum, Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans in a continuous bubble column reactor

open access: yesJournal of Industrial Microbiology & Biotechnology, 2009
To estimate the bioleaching performance of chalcopyrite for various hydraulic residence times (HRTs), laboratory-scale bioleaching of chalcopyrite concentrate was carried out in a continuous bubble column reactor with three different HRTs of 120, 80 and 40 h, respectively.
Lexian, Xia   +5 more
openaire   +2 more sources

Influencia de la concentración de hierro y pH iniciales en un proceso de biodesulfurización de carbón – ensayos a nivel de laboratorio

open access: yesRevista Colombiana de Biotecnología, 2011
Título en ingles: Particle size, iron concentration and pH influence in biodesulfurization process of coal – laboratory tests   Resumen   A un carbón proveniente del municipio de Puerto Libertador, Córdoba-Colombia (2.34% de azufre total, con 1.34 ...
Gerardo Andrés Caicedo Pineda   +2 more
doaj  

Bacterial Diversity in the Uranium Mill-Tailing Gittersee as Estimated via a 16S rDNA Approach [PDF]

open access: yes, 2005
Bacterial diversity in a soil sample collected from uranium mill-tailings called Gittersee and situated near the city of Dresden, Germany, was analysed by using a culture-independent 16S rDNA approach exploiting PCR ampli cation primers 7F and 1513R. The
Satchanska, Galina   +1 more
core  

Home - About - Disclaimer - Privacy