(2017). Microbial acceleration of aerobic pyrite oxidation at circumneutral pH. Geobiology. doi: 10.1111/gbi.12241. [Epub ahead of print].Percak-Dennett, E., He, S., Converse, B., Konishi, H., Xu, H., Corcoran, A., et al. (2017) Microbial acceleration of aerobic pyrite oxidation ...
Moses CO, Herman JS (1991) Pyrite oxidation at circumneutral pH. Geochim Cosmochim Acta 55(2):471–482 CrossRef van Hullenbusch E, Farges F, Lenz M, Lens P, Brown GE Jr (2006) Selenium speciation in biofilms from granular sludge bed reactors used for wastewater treatment. XAFS 13 conf...
It was thus concluded that the PHGMS method has provided an effective way in removing arsenopyrite from pyrite ores. 展开 关键词: High gradient magnetic separation DOI: 10.1016/j.rinp.2018.08.008 年份: 2018 收藏 引用 批量引用 报错 分享 ...
Anaerobic, Nitrate-Dependent Oxidation of U(IV) Oxide Minerals by the Chemolithoautotrophic Bacterium Thiobacillus denitrificans Under anaerobic conditions and at circumneutral pH, cells of the widely distributed, obligate chemolithoautotrophic bacterium Thiobacillus denitrificans ox... Beller,R H. - 《App...
This work shows that pyrite, an extremely cheap and readily available waste material, may be suitable for the removal of hexavalent chromium from acidic to circumneutral waste streams. The reduced chromium ultimately forms a coating on the pyrite surface, which passivates the pyrite surface towards ...
Under acidic conditions Fe(II) becomes completely dissolved (Peiffer and Gade, 2007) whereas solid FeS is a common initial product at circumneutral pH (Rickard, 1974, Pyzik and Sommer, 1981). It has been early recognized that sulfidation of ferric (hydr)oxides also triggers the formation of ...
Laboratory studies on chemolithoautotrophic microbial denitrification coupled to pyrite oxidation at circumneutral pH yielded conflicting results. Some studies indicated that microbial oxidation of pyrite does occur, but several reports have shown that no microbial pyrite oxidation took place in experiments ...
The release of arsenic (As) from the oxidation of As-rich pyrite is an important source of the high arsenic in groundwater. As a widespread low-molecular-weight organic acid, citrate plays an important role on the cycling of Fe(II)/Fe(III) through complexation in circumneutral subsurface ...
Because of the inherent geochemical constraints on pyrite oxidation at neutral pH, the colonization of pyrite under circumneutral pH conditions must be facilitated by the development of an acidic nanoenvironment between the bacteria and the pyrite mineral surface....
(Quadros Amorím et al., 1999). If pollution into water courses occurs, it is mainly related to processing plants or to adjacent gold mining operations. Similar situations occur for iron carbonate mines, such as those in the German Siegerland area, where the pH values are circumneutral and ...