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Cr(VI) Reduction and Cr(III) Immobilization by Acinetobacter sp. HK-1 with the Assistance of a Novel Quinone/Graphene Oxide Composite

23-10-2014 | Hai-Kun Zhang; Hong Lu; Jing Wang; Ji-Ti Zhou; Meng Sui, Environmental Science & Technology, 2014

Cr(VI) biotreatment has attracted a substantial amount of interest due to its cost effectiveness and environmental friendliness. However, the slow Cr(VI) bioreduction rate and the formed organo-Cr(III) in solution are bottlenecks for biotechnology application. In this study, a novel strain, ...


A Novel Anaerobic Electrochemical Membrane Bioreactor (AnEMBR) with Conductive Hollow-fiber Membrane for Treatment of Low-Organic Strength Solutions

22-10-2014 | Krishna P. Katuri; Craig M. Werner; Rodrigo J. Jimenez-Sandoval; Wei Chen; Sungil Jeon; Bruce E. Logan; Zhiping Lai; ..., Environmental Science & Technology, 2014

A new anaerobic treatment system that combined a microbial electrolysis cell (MEC) with membrane filtration using electrically conductive, porous, nickel-based hollow-fiber membranes (Ni-HFMs) was developed to treat low organic strength solution and recover energy in the form of biogas. This new ...


Electrodriven Selective Transport of Cs+ Using Chlorinated Cobalt Dicarbollide in Polymer Inclusion Membrane: A Novel Approach for Cesium Removal from Simulated Nuclear Waste Solution

20-10-2014 | Sanhita Chaudhury; Arunasis Bhattacharyya; Asok Goswami, Environmental Science & Technology, 2014

The work describes a novel and cleaner approach of electrodriven selective transport of Cs from simulated nuclear waste solutions through cellulose tri acetate (CTA)/poly vinyl chloride (PVC) based polymer inclusion membrane. The electrodriven cation transport together with the use of highly Cs+ ...


Geochemical Processes Constraining Iron Uptake in Strategy II Fe Acquisition

14-10-2014 | W. D. C. Schenkeveld; Y. Schindlegger; E. Oburger; M. Puschenreiter; S. Hann; S. M. Kraemer, Environmental Science & Technology, 2014

Phytosiderophores (PS) are natural chelating agents, exuded by graminaceous plants (grasses) for the purpose of Fe acquisition (Strategy II). They can form soluble Fe complexes with soil-Fe that can be readily taken up. PS are exuded in a diurnal pulse release, and with the start of PS release a ...


Release of Nitrous Acid and Nitrogen Dioxide from Nitrate Photolysis in Acidic Aqueous Solutions

10-10-2014 | Nicole K. Scharko; Andrew E. Berke; Jonathan D. Raff, Environmental Science & Technology, 2014

Nitrate (NO3¯) is an abundant component of aerosols, boundary layer surface films, and surface water. Photolysis of NO3¯ leads to NO2 and HONO, both of which play important roles in tropospheric ozone and OH production. Field and laboratory studies suggest that NO3¯ photochemistry is a more ...


Preparation, Characterization and Origin of Highly Active and Thermally Stable Pd–Ce0.8Zr0.2O2 Catalysts via Sol-Evaporation Induced Self-Assembly Method

06-10-2014 | Jian Liu; Bing Liu; Yu Fang; Zhen Zhao; Yuechang Wei; Xue-Qing Gong; Chunming Xu; Aijun Duan; Guiyuan Jiang, Environmental Science & Technology, 2014

The Pd–Ce–Zr solid solution catalysts were in situ synthesized by a sol-evaporation induced self-assembly (SEISA) method. The catalytic performances of the as-prepared catalysts for CO oxidation and their physicochemical properties were investigated with various characterization techniques. The ...


Removal of Elemental Mercury from Flue Gas by Thermally Activated Ammonium Persulfate in A Bubble Column Reactor

03-10-2014 | Yangxian Liu; Qian Wang, Environmental Science & Technology, 2014

In this article, a novel technique on removal of elemental mercury (Hg0) from flue gas by thermally activated ammonium persulfate ((NH4)2S2O8) has been developed for the first time. Some experiments were carried out in a bubble column reactor to evaluate the effects of process parameters on Hg0 ...


Different Arsenate and Phosphate Incorporation Effects on the Nucleation and Growth of Iron(III) (Hydr)oxides on Quartz

03-10-2014 | Chelsea W. Neil; Byeongdu Lee; Young-Shin Jun, Environmental Science & Technology, 2014

Iron(III) (hydr)oxides play an important role in the geochemical cycling of contaminants in natural and engineered aquatic systems. The ability of iron(III) (hydr)oxides to immobilize contaminants can be related to whether the precipitates form heterogeneously (e.g., at mineral surfaces) or ...


Oxidation of Microcystin-LR by Ferrate(VI): Kinetics, Degradation Pathways, and Toxicity Assessments

02-10-2014 | Wenjun Jiang; Long Chen; Sudha Rani Batchu; Piero R. Gardinali; Libor Jasa; Blahoslav Marsalek; Radek Zboril; Dionys ..., Environmental Science & Technology, 2014

The presence of the potent cyanotoxin, microcystin-LR (MC-LR), in drinking water sources poses a serious risk to public health. The kinetics of the reactivity of ferrate(VI) (FeVIO42–, Fe(VI)) with MC-LR and model compounds (sorbic acid, sorbic alcohol, and glycine anhydride) are reported over a ...


Mechanism of the Selective Catalytic Oxidation of Slip Ammonia over Ru-Modified Ce–Zr Complexes Determined by in Situ Diffuse Reflectance Infrared Fourier Transform Spectroscopy

02-10-2014 | Wanmiao Chen; Yongpeng Ma; Zan Qu; Qinghang Liu; Wenjun Huang; Xiaofang Hu; Naiqiang Yan, Environmental Science & Technology, 2014

The slip ammonia from selective catalytic reduction (SCR) of NOx in coal-fired flue gas can result in deterioration of the utilities or even the environmental issues. To achieve selective catalytic oxidation (SCO) of slip ammonia, Ru-modified Ce–Zr solid solution catalysts were prepared and ...


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