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Findings from Huazhong Agricultural University Has Provided New Data on Environmental Water Research

June 27, 2014

By a News Reporter-Staff News Editor at Ecology, Environment & Conservation -- Researchers detail new data in Environmental Water Research. According to news reporting out of Hubei, People's Republic of China, by VerticalNews editors, research stated, "Manganese(II) contamination is naturally occurring in many groundwater and surface water sources. Moreover, industrial wastewater is also responsible for much of the Mn(II) contamination."

Our news journalists obtained a quote from the research from Huazhong Agricultural University, "Nowadays, Mn(II) contamination has become a serious environmental problem in some regions of the world. To explore a biological approach for removing excessive amounts of aqueous Mn(II) from water, we found a new biocatalyst multicopper oxidase CueO, which was firstly proved to catalyze the oxidation of Mn(II) both in vitro and in vivo. Subsequently, we established a CueO-mediated catalysis system to prepare biogenic Mn oxide (BioMnO(x)), which was confirmed to be gamma-Mn3O4 by X-ray diffraction. This newly prepared BioMnO(x) consisted of 53.6% Mn(II), 18.4% Mn(III) and 28.0% Mn(IV) characterized by X-ray photoelectron spectroscopy. It exhibited distinct polyhedral structure with nanoparticles of 150-350 nm diameters observed by transmission electron microscopy. Importantly, CueO could remove 35.7% of Mn(II) after a seven-day reaction, and on the other hand, the cueO-overexpressing Escherichia coli strain (ECueO) could also oxidize 58.1% dissolved Mn(II), and simultaneously remove 97.7% Mn(II)."

According to the news editors, the research concluded: "Based on these results, we suggest that ECueO strain and CueO enzyme have potential applications on Mn(II) decontamination in water treatment."

For more information on this research see: Catalytic oxidation of manganese(II) by multicopper oxidase CueO and characterization of the biogenic Mn oxide. Water Research, 2014;56():304-313. Water Research can be contacted at: Pergamon-Elsevier Science Ltd, The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, England. (Elsevier -; Water Research -

Our news journalists report that additional information may be obtained by contacting J.M. Su, Huazhong Agricultural University, Coll Resources & Environm, Minist Agr, Key Lab Arable Land Conservat, Wuhan 430070, Hubei, People's Republic of China. Additional authors for this research include L. Deng, L.B. Huang, S.J. Guo, F. Liu and J. He.

Keywords for this news article include: Asia, Hubei, Oxidase, Enzymes and Coenzymes, People's Republic of China, Environmental Water Research

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Source: Ecology, Environment & Conservation

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