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Oxidative Degradation of Nalidixic Acid by Nano-magnetite via Fe2+/O2-Mediated Reactions

20-Mar-2015 | Sandy G. Ardo; Sylvie Nélieu; Georges Ona-Nguema; Ghislaine Delarue; Jessica Brest; Elsa Pironin; Guillaume Morin, Environmental Science & Technology, 2015

Organic pollution has become a critical issue worldwide due to the increasing input and persistence of organic compounds in the environment. Iron minerals are potentially able to degrade efficiently organic pollutants sorbed to their surfaces via oxidative or reductive transformation processes. ...

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Highly Efficient Forward Osmosis Based on Porous Membranes—Applications and Implications

19-Mar-2015 | Saren Qi; Ye Li; Yang Zhao; Weiyi Li; Chuyang Y. Tang, Environmental Science & Technology, 2015

For the first time, forward osmosis (FO) was performed using a porous membrane with an ultrafiltration (UF)-like rejection layer and its feasibility for high performance FO filtration was demonstrated. Compared to traditional FO membranes with dense rejection layers, the UF-like FO membrane was 2 ...

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Influence of Copper Recovery on the Water Quality of the Acidic Berkeley Pit Lake, Montana, U.S.A.

12-Mar-2015 | Nicholas J. Tucci; Christopher H. Gammons, Environmental Science & Technology, 2015

The Berkeley Pit lake in Butte, Montana, formed by flooding of an open-pit copper mine, is one of the world’s largest accumulations of acidic, metal-rich water. Between 2003 and 2012, approximately 2 × 1011 L of pit water, representing 1.3 lake volumes, were pumped from the bottom of the lake to ...

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Application of Dual Carbon–Bromine Isotope Analysis for Investigating Abiotic Transformations of Tribromoneopentyl Alcohol (TBNPA)

11-Mar-2015 | Anna Kozell; Yinon Yecheskel; Noa Balaban; Ishai Dror; Ludwik Halicz; Zeev Ronen; Faina Gelman, Environmental Science & Technology, 2015

Many of polybrominated organic compounds, used as flame retardant additives, belong to the group of persistent organic pollutants. Compound-specific isotope analysis is one of the potential analytical tools for investigating their fate in the environment. However, the isotope effects associated ...

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Influence of Oxygenation on Chromium Redox Reactions with Manganese Sulfide (MnS(s))

06-Mar-2015 | Amar R. Wadhawan; Kenneth J. Livi; Alan T. Stone; Edward J. Bouwer, Environmental Science & Technology, 2015

Manganese sulfide (MnS(s)) minerals exist in sulfidic environments and can have unique reactive abilities because of sulfide, which is a known reductant, and Mn, the oxyhydroxides of which are known oxidants. This study elucidated the role of MnS(s) in controlling Cr speciation with implications ...

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Natural Colloidal P and Its Contribution to Plant P Uptake

06-Mar-2015 | Daniela Montalvo; Fien Degryse; Mike J. McLaughlin, Environmental Science & Technology, 2015

Phosphorus (P) bioavailability depends on its concentration and speciation in solution. Andisols and Oxisols have very low soil solution concentration of free orthophosphate, as they contain high concentrations of strongly P-sorbing minerals (Al/Fe oxyhydroxides, allophanes). Free orthophosphate ...

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Mechanisms of Sb(III) Oxidation by Pyrite-Induced Hydroxyl Radicals and Hydrogen Peroxide

04-Mar-2015 | Linghao Kong; Xingyun Hu; Mengchang He, Environmental Science & Technology, 2015

Antimony (Sb) is an element of growing interest, and its toxicity and mobility are strongly influenced by redox processes. Sb(III) oxidation mechanisms in pyrite suspensions were comprehensively investigated by kinetic measurements in oxic and anoxic conditions and simulated sunlight. Sb(III) was ...

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Estimation of Organic and Elemental Carbon Emitted from Wood Burning in Traditional and Improved Cookstoves Using Controlled Cooking Test

27-Feb-2015 | Pooja Arora; Suresh Jain, Environmental Science & Technology, 2015

Emission of various climate- and health-related pollutant species from solid biomass burning in traditional cookstoves is a global concern. Improved cookstoves serve as a possible solution to mitigate the associated impacts. However, there is a need to intensify the efforts in order to increase ...

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Studies on Residue-Free Decontaminants for Chemical Warfare Agents

27-Feb-2015 | George W. Wagner, Environmental Science & Technology, 2015

Residue-free decontaminants based on hydrogen peroxide, which decomposes to water and oxygen in the environment, are examined as decontaminants for chemical warfare agents (CWA). For the apparent special case of CWA on concrete, H2O2 alone, without any additives, effectively decontaminates ...

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Coupled Redox Transformation of Chromate and Arsenite on Ferrihydrite

23-Feb-2015 | Elizabeth B. Cerkez; Narayan Bhandari; Richard J. Reeder; Daniel R. Strongin, Environmental Science & Technology, 2015

The redox chemistry of chromate (Cr(VI)) and arsenite (As(III)) on the iron oxyhydroxide, ferrihydrite (Fh), was investigated. Attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR), X-ray absorption spectroscopy (XAS), and X-ray photoelectron spectroscopy (XPS) were used ...

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