Keyword search (3,448 papers available)


The effect of step-feeding distribution ratio on high concentration perchlorate removal performance in ABR system with heterotrophic combined sulfur autotrophic process.

Author(s): Li H, Li K, Guo J, Chen Z, Han Y, Song Y, Lu C, Hou Y, Zhang D, Zhang Y

In a lab-scale anaerobic baffled reactor (ABR) with eight compartments, the heterotrophic and sulfur autotrophic processes were combined to remove perchlorate. And then, the step-feeding distribution ratio of the heterotrophic perchlorate reduction unit (HP...

Article GUID: 33485237
Acceleration mechanism of bioavailable Fe(Ⅲ) on Te(IV) bioreduction of Shewanella oneidensis MR-1: Promotion of electron generation, electron transfer and energy level.

Author(s): He Y, Guo J, Song Y, Chen Z, Lu C, Han Y, Li H, Hou Y, Zhao R

The release of highly toxic tellurite into the aquatic environment poses significant environmental risks. The acceleration mechanism and tellurium nanorods (TeNPs) characteristics with bioavailable ferric citrate (Fe(III)) were investigated in the tellurite...

Article GUID: 32853890
Effect and ameliorative mechanisms of polyoxometalates on the denitrification under sulfonamide antibiotics stress.

Author(s): Guo H, Chen Z, Lu C, Guo J, Li H, Song Y, Han Y, Hou Y

Bioresour Technol. 2020 Feb 22;305:123073 Authors: Guo H, Chen Z, Lu C, Guo J, Li H, Song Y, Han Y, Hou Y

Article GUID: 32145698
Effect of dissolved oxygen on simultaneous removal of ammonia, nitrate and phosphorus via biological aerated filter with sulfur and pyrite as composite fillers.

Author(s): Li Y, Guo J, Li H, Song Y, Chen Z, Lu C, Han Y, Hou Y

Bioresour Technol. 2019 Oct 28;296:122340 Authors: Li Y, Guo J, Li H, Song Y, Chen Z, Lu C, Han Y, Hou Y

Article GUID: 31704601
Photosystem Biogenesis Is Localized to the Translation Zone in the Chloroplast of Chlamydomonas.

Author(s): Sun Y, Valente-Paterno MI, Bakhtiari S, Law C, Zhan Y, Zerges W

Photosystem Biogenesis Is Localized to the Translation Zone in the Chloroplast of Chlamydomonas.

Plant Cell. 2019 Oct 07;:

Authors: Sun Y, Valente-Paterno MI, Bakhtiari S, Law C, Zhan Y, Zerges W

Abstract
Intracellular pro...

Article GUID: 31591163
Enhanced denitrification performance and biocatalysis mechanisms of polyoxometalates as environmentally-friendly inorganic redox mediators.

Author(s): Guo H, Chen Z, Guo J, Lu C, Song Y, Han Y, Li H, Hou Y

Bioresour Technol. 2019 Jul 16;291:121816 Authors: Guo H, Chen Z, Guo J, Lu C, Song Y, Han Y, Li H, Hou Y

Article GUID: 31344631
Biogenic membranes of the chloroplast in Chlamydomonas reinhardtii.

Author(s): Schottkowski M, Peters M, Zhan Y, Rifai O, Zhang Y, Zerges W

Proc Natl Acad Sci U S A. 2012 Nov 20;109(47):19286-91 Authors: Schottkowski M, Peters M, Zhan Y, Rifai O, Zhang Y, Zerges W

Article GUID: 23129655
Localized control of oxidized RNA.

Author(s): Zhan Y, Dhaliwal JS, Adjibade P, Uniacke J, Mazroui R, Zerges W

J Cell Sci. 2015 Nov 15;128(22):4210-9 Authors: Zhan Y, Dhaliwal JS, Adjibade P, Uniacke J, Mazroui R, Zerges W

Article GUID: 26449969
Air quality modeling for effective environmental management in the mining region.

Author(s): Asif Z, Chen Z, Han Y

J Air Waste Manag Assoc. 2018 Sep;68(9):1001-1014 Authors: Asif Z, Chen Z, Han Y

Article GUID: 29667510
A combined heterotrophic and sulfur-based autotrophic process to reduce high concentration perchlorate via anaerobic baffled reactors: Performance advantages of a step-feeding strategy.

Author(s): Li K, Guo J, Li H, Han Y, Chen Z, Song Y, Xing Y, Zhang C

Bioresour Technol. 2019 May;279:297-306 Authors: Li K, Guo J, Li H, Han Y, Chen Z, Song Y, Xing Y, Zhang C

Article GUID: 30738356
Title:Air quality modeling for effective environmental management in the mining region.
Authors:Asif Z,  Chen Z,  Han Y
Link:https://www.ncbi.nlm.nih.gov/pubmed/29667510?dopt=Abstract
Category:J Air Waste Manag Assoc
PMID:29667510
Dept Affiliation: ENCS
1 a Department of Building, Civil, and Environmental Engineering , Concordia University , Montreal , Canada.
2 b School of Environmental and Municipal Engineering , Tianjin Chengjian University , Tianjin , People's Republic of China.

Description:

Air quality modeling for effective environmental management in the mining region.

J Air Waste Manag Assoc. 2018 Sep;68(9):1001-1014

Authors: Asif Z, Chen Z, Han Y

Abstract

Air quality in the mining sector is a serious environmental concern and associated with many health issues. Air quality management in mining regions has been facing many challenges due to lack of understanding of atmospheric factors and physical removal mechanisms. A modeling approach called the mining air dispersion model (MADM) is developed to predict air pollutants concentration in the mining region while considering the deposition effect. The model takes into account the planet's boundary conditions and assumes that the eddy diffusivity depends on the downwind distance. The developed MADM is applied to a mining site in Canada. The model provides values for the predicted concentrations of PM10, PM2.5, TSP, NO2, and six heavy metals (As, Pb, Hg, Cd, Zn, Cr) at various receptor locations. The model shows that neutral stability conditions are dominant for the study site. The maximum mixing height is achieved (1280 m) during the evening in summer, and the minimum mixing height (380 m) is attained during the evening in winter. The dust fall (PM coarse) deposition flux is maximum during February and March with a deposition velocity of 4.67 cm/sec. The results are evaluated with the monitoring field values, revealing a good agreement for the target air pollutants with R-squared ranging from 0.72 to 0.96 for PM2.5, from 0.71 to 0.82 for PM10, and from 0.71 to 0.89 for NO2. The analyses illustrate that the presented algorithm in this model can be used to assess air quality for the mining site in a systematic way. Comparisons of MADM and CALPUFF modeling values are made for four different pollutants (PM2.5, PM10, TSP, and NO2) under three different atmospheric stability classes (stable, neutral, and unstable). Further, MADM results are statistically tested against CALPUFF for the air pollutants and model performance is found satisfactory.

IMPLICATIONS: The mathematical model (MADM) is developed by extending the Gaussian equation particularly when examining the settling process of important pollutants for the industrial region. Physical removal effects of air pollutants with field data have been considerred for the MADM development and for an extensive field case study. The model is well validated in the field of an open pit mine to assess the regional air quality. The MADA model helps to facilitate the management of the mining industry in doing estimation of emission rate around mining activities and predicting the resulted concentration of air pollutants together in one integrated approach.

PMID: 29667510 [PubMed - in process]