Wyniki wyszukiwania dla: Chaohai Wei

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Influence of soil evolution on the heavy metal risk in three kinds of intertidal zone of the Pearl River Estuary

Jianbo Liao, Sheng Deng, Xinhui Liu, Hui Lin, więcej

Land Degradation & Development > 32 > 2 > 583 - 596

Human activities and the increasing emphasis on coastal protection contribute to the diversity and evolution of intertidal soil. But, less is known about the influence of soil evolution on the heavy metal risk in intertidal zones. In this study, soil samples were collected from three kinds of intertidal zone in the Pearl River Estuary, including bare beach (BB), a spartina growing area (SGA), and...

artykuł

Simultaneous removal of thiocyanate and nitrogen from wastewater by autotrophic denitritation process

Jianxin Pan, Jingde Ma, Haizhen Wu, Yuan Ren, więcej

Bioresource Technology > 2018 > 267 > C > 30-37

Pollutants containing sulfur as electron donors will play an important role in the energy-saving denitritation process when organic carbon source was insufficient in wastewater. However, thiocyanate (SCN⁻), a hazardous pollutant, has not been characterized in denitritation. In this study, the effects of key environmental factors on removal of thiocyanate and nitrogen were investigated in denitritation...

artykuł

Photocatalytic oxidation of nitrogen oxides over {001}TiO₂: the influence of F⁻ ions

Qianqian Huang, Yun Hu, Guangying He, Chunjing Lin, więcej

Environmental Science and Pollution Research > 2018 > 25 > 35 > 35342- 35351

A series of anatase TiO₂ nanosheets with different percentage of {001} facets ({001}TiO₂) were synthesized through a hydrothermal route using tetrabutyltitanate as a titanium precursor and HF as a shape controlling agent. The amount of HF exhibits an obvious influence on the structures and activities of TiO₂ samples. The adsorbed surface F⁻ ions on the {001} facets of the anatase TiO₂ were removed...

artykuł

Ozonation of aqueous phenol catalyzed by biochar produced from sludge obtained in the treatment of coking wastewater

Fengzhen Zhang, Kaiyi Wu, Hongtao Zhou, Yun Hu, więcej

Journal of Environmental Management > 2018 > 224 > C > 376-386

Sludge collected from industrial wastewater treatment possesses a threatening effect on environment, and changing it into functional material provides an alternative for its disposal. Biochar synthesized by pyrolysis of sludge obtained from coking wastewater treatment was evaluated for the catalytic ozonation of phenol in aqueous solution. The present work focused on testing the catalytic performance...

artykuł

Spatiotemporal simulation and comprehensive evaluation of atmospheric coal-related PAHs emission reduction in China

Likun Liang, Xuan Ru, Jingyue Wei, Zhudong Lin, więcej

Ecological Indicators > 2018 > 93 > C > 687-696

As the world’s largest consumer of coal, China is now facing serious pollution of atmospheric polycyclic aromatic hydrocarbons (PAHs) produced by coal utilization processes, i.e., coal-related PAHs, which should be of concern for relevant policy-makers. Based on the interrelationships among coal-related PAHs emission, coal consumption and socio-economic development, this study applied a coupled method...

artykuł

Enhancement of visible-light photocatalytic activities of BiVO₄ coupled with g-C₃N₄ prepared using different precursors

Peipei Cui, Yun Hu, Mengmeng Zheng, Chaohai Wei

Environmental Science and Pollution Research > 2018 > 25 > 32 > 32466- 32477

Graphitic-like carbon nitride (g-C₃N₄) photocatalyst was synthesized by a facile chemical pyrolysis method, which was built on the self-condensation of different precursors to generate g-C₃N₄, e.g., melamine, urea, and thiocarbamide. And the different precursors produced a great influence on the photocatalytic activities of g-C₃N₄. Heterojunctions of g-C₃N₄ and BiVO₄ were synthesized using a facile...

artykuł

Facile preparation of nitrogen and sulfur co-doped graphene-based aerogel for simultaneous removal of Cd²⁺ and organic dyes

Qiaoping Kong, Chaohai Wei, Sergei Preis, Yun Hu, więcej

Environmental Science and Pollution Research > 2018 > 25 > 21 > 21164- 21175

The need in simultaneous removal of heavy metals and organic compounds dictates the development of synthetic adsorbents with tailor-made properties. A nitrogen (N) and sulfur (S) co-doped graphene-based aerogel (GBA) modified with 2,5-dithiobisurea was synthesized hydrothermally for simultaneous adsorption of Cd²⁺ and organic dyes—safranin-O (SO), crystal violet (CV), and methylene blue (MB). 2,5-Dithiobisurea...

artykuł

Single microbial fuel cell reactor for coking wastewater treatment: Simultaneous carbon and nitrogen removal with zero alkaline consumption

Di Wu, Xiaoyun Yi, Rong Tang, Chunhua Feng, więcej

Science of The Total Environment > 2018 > 621 > C > 497-506

The use of several individual reactors for sequential removal of organic compounds and nitrogen, in addition to the required alkaline addition in aerobic reactors, remain outstanding technical challenges to the traditional biological treatment of coking wastewater. Here, we report the utilization of a single microbial fuel cell (MFC) reactor that performs simultaneous carbon and nitrogen removal with...

artykuł

Energy-saving optimization of coking wastewater treated by aerobic bio-treatment integrating two-stage activated carbon adsorption

Hongtao Zhou, Chaohai Wei, Fengzhen Zhang, Jianbo Liao, więcej

Journal of Cleaner Production > 2018 > 175 > C > 467-476

Contaminants removal efficiency and energy consumption are of practical importance in wastewater treatment. Herein, an energy saving system including aerobic bio-treatment combined with a two-stage adsorption (AB-2A) was proposed and applied to the treatment of coking wastewater. The adsorption before bio-treatment partially extracts energy and organic constituents from the wastewater, making the...

artykuł

Design and fabrication of highly ordered ion imprinted SBA-15 and MCM-41 mesoporous organosilicas for efficient removal of Ni2+ from different properties of wastewaters

Rong He, Zhihong Wang, Lei Tan, Yi Zhong, więcej

Microporous and Mesoporous Materials > 2018 > 257 > C > 212-221

We developed two types of novel highly ordered Ni²⁺ imprinted mesoporous organosilica materials (SBA-15 (NiIMS1) and MCM-41 (NiIMS2)) through co-condensation for selective adsorption of Ni²⁺ from electroplating Ni²⁺ effluents. FTIR and solid-state ¹³C NMR spectra demonstrated the successful embedment of functionalized iminodiacetic acid and ethanediamine chelating groups in NiIMS1 and NiIMS2, respectively...

artykuł

Correction to: The mineralization of oxalic acid and bio-treated coking wastewater by catalytic ozonation using nickel oxide

Kaiyi Wu, Fengzhen Zhang, Haizhen Wu, Chaohai Wei

Environmental Science and Pollution Research > 2018 > 25 > 3 > 2401-2401

In Table 1, “SO^2-4” and “NO^-3” should be corrected to “ S O 4 2 − $$ \mathrm{S}{\mathrm{O}}_4^{2-} $$ ” and “ N O 3 − $$ \mathrm{N}{\mathrm{O}}_3^{-} $$ ”, respectively. The original article was corrected.

artykuł

The mineralization of oxalic acid and bio-treated coking wastewater by catalytic ozonation using nickel oxide

Kaiyi Wu, Fengzhen Zhang, Haizhen Wu, Chaohai Wei

Environmental Science and Pollution Research > 2018 > 25 > 3 > 2389-2400

Coking wastewater after biological treatment still possesses potential environmental risk and should be mineralized further. This work focused on the mineralization of bio-treated coking wastewater using catalytic ozonation by NiO. First, oxalic acid, the typical by-product of advanced oxidation process (AOPs), was used to test the catalytic performance of NiOs, prepared by modified hydrothermal methods...

artykuł

Mechanistic evaluation of ferrite AFe2O4 (A=Co, Ni, Cu, and Zn) catalytic performance in oxalic acid ozonation

Fengzhen Zhang, Chaohai Wei, Kaiyi Wu, Hongtao Zhou, więcej

Applied Catalysis A: General > 2017 > 547 > C > 60-68

Spinel ferrites AFe₂O₄ (A=Co, Ni, Cu, and Zn) synthesized by citrate sol-gel method were tested for their catalytic performance in ozonation of aqueous oxalic acid. The objectives of this work include the evaluation of catalytic activity and ferrites stability in mineralization of oxalic acid together with exploring the activation mechanisms of ferrite catalysts in catalytic ozonation process. The...

artykuł

Biocathode denitrification of coke wastewater effluent from an industrial aeration tank: Effect of long-term adaptation

Rong Tang, Di Wu, Wenhang Chen, Chunhua Feng, więcej

Biochemical Engineering Journal > 2017 > 125 > C > 151-160

Despite recent advances in the development of autotrophic denitrification, wherein the electrode is used directly as the electron donor (known as biocathode denitrification), very little attention has been given to this approach for removal of nitrate in real industrial wastewater. This study shows that a bioelectrochemical reactor poised at −0.50V (vs. a saturated calomel electrode (SCE)) achieved...

artykuł

Multi-phase distribution and comprehensive ecological risk assessment of heavy metal pollutants in a river affected by acid mine drainage

Jianbo Liao, Xuan Ru, Binbin Xie, Wanhui Zhang, więcej

Ecotoxicology and Environmental Safety > 2017 > 141 > C > 75-84

To date, there is a lack of a comprehensive research on heavy metals detection and ecological risk assessment in river water, sediments, pore water (PW) and suspended solids (SS). Here, the concentrations of heavy metals, including Cu, Zn, Mn, Cd, Pb and As, and their distribution between the four phases was studied. Samples for analysis were taken from twelve sites of the Hengshi River, Guangdong...

artykuł

Heavy metals in river surface sediments affected with multiple pollution sources, South China: Distribution, enrichment and source apportionment

Jianbo Liao, Jian Chen, Xuan Ru, Jundong Chen, więcej

Journal of Geochemical Exploration > 2017 > 176 > C > 9-19

Understanding sources and fate of heavy metals in river basin is crucial for assessing risks associated with human and ecosystem exposure. To provide basic information for agriculture and industry transferring in future, environmental development planning and decision-making, and drinking water source protecting associated with human health in the region, compound heavy metal pollution in the Maba...

artykuł

Spatial distributions, source apportionment and ecological risk of SVOCs in water and sediment from Xijiang River, Pearl River Delta

Jiao Tang, Taicheng An, Guiying Li, Chaohai Wei

Environmental Geochemistry and Health > 2018 > 40 > 5 > 1853-1865

Xijiang River is an important drinking water source in Guangxi Province, China. Along the Xijiang River and surrounding tributary, the pollution profile of three important groups of semi-volatile organic compounds, including polycyclic aromatic hydrocarbons (PAHs), organochlorine pesticides (OCPs) and phthalate esters (PAEs), was analyzed. Relatively low levels of PAHs (64–3.7 × 10² ng L⁻¹) and OCPs...

artykuł

Microbial polychlorinated biphenyl dechlorination in sediments by electrical stimulation: The effect of adding acetate and nonionic surfactant

Hui Yu, Hui Wan, Chunhua Feng, Xiaoyun Yi, więcej

Science of The Total Environment > 2017 > 580 > C > 1371-1380

The necessity for developing an efficient and cost-effective in situ bioremediation technology for sediments contaminated with polychlorinated biphenyls (PCBs) has prompted the application of low-voltage electrical fields to anaerobic digestion systems. Here we show that the use of a sediment-based bio-electrochemical reactor (BER) poised at a potential of −0.50V (vs. a standard calomel electrode,...

artykuł

Anaerobic Dechlorination of Tetrachlorobisphenol A in River Sediment and Associated Changes in Bacterial Communities

Jing Zhang, Shicheng Liu, Lingling Li, Yuan Ren, więcej

Water, Air, & Soil Pollution > 2017 > 228 > 2 > 1-14

Tetrachlorobisphenol A (TCBPA) is a widely used flame retardant and a potential endocrine disruptor. We estimated the role of the microbial community in degradation of TCBPA in river sediment from the vicinity of an E-waste processing facility. The effects of different anaerobic conditions on degradation efficiency of TCBPA were investigated, and differences in bacterial communities among these conditions...

artykuł

Emission patterns and risk assessment of polybrominated diphenyl ethers and bromophenols in water and sediments from the Beijiang River, South China

Jukun Xiong, Guiying Li, Taicheng An, Chaosheng Zhang, więcej

Environmental Pollution > 2016 > 219 > C > 596-603

To reveal the emission patterns of brominated flame retardants (BFRs) in the Beijiang River, South China, concentrations of polybrominated diphenyl ethers (PBDEs) and phenolic BFRs (2,4,6-tribromophenol (TBP), pentabromophenol (PeBP), tetrabromobisphenol A (TBBPA)), and bisphenol A (BPA) in water and sediments were simultaneously measured, and the geographic information system (GIS) were applied to...

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