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1. Relative doses instead of relative concentrations for the determination of the consequences of the radiological atmospheric releases

Author:
Mlakar, Primož; Božnar, Marija Zlata; Grašič, Boštjan
Source:
Journal of environmental radioactivity 2019 v.196 pp. 1-8
ISSN:
0265-931X
Subject:
pollutants,   etc   ; accidents; landscapes; radioactivity; weather;     Show all 5 Subjects
Abstract:
... Radiological atmospheric releases require population dose calculation for proper determination of preventive measures. The old concept of relative concentrations requires long lasting constant emission which is not realistic.The proposed concept of the “relative doses” is the generalization and expansion of the known concept of relative concentrations. Relative doses allow an evaluation of the gen ...
DOI:
10.1016/j.jenvrad.2018.10.005

2. Micromotors for “Chemistry-on-the-Fly”

Author:
Karshalev, Emil; Esteban-Fernández de Ávila, Berta; Wang, Joseph
Source:
Journal of the American Chemical Society 2018 v.140 no.11 pp. 3810-3820
ISSN:
1520-5126
Subject:
pollutants,   etc   ; chelation;     Show all 2 Subject
Abstract:
... This perspective reviews mobile micro/nanomotor scaffolds for performing “chemistry-on-the-fly”. Synthetic nano/micromotors offer great versatility and distinct advantages in diverse chemical applications owing to their efficient propulsion and facile surface functionalization that allow these mobile platforms to move and disperse reactive materials across the solution. Such dynamic microreactors ...
DOI:
10.1021/jacs.8b00088

3. Transient dispersion of an initial point pollutant concentration in wetland flows

Author:
Wang, Ping; Zeng, Li; Huai, Wenxin
Source:
Environmental science and pollution research international 2018 v.25 no.34 pp. 34414-34425
ISSN:
0944-1344
Subject:
pollutants,   etc   ; statistical analysis; wetlands;     Show all 3 Subjects
Abstract:
... Initial point pollutant transport in wetland flows acts as a typical form in various applications. Accurate determination of the basic characteristics for dispersion fundamentally supports the predication of pollutant transport especially in the transient stage. This work analytically studies the transient dispersion of an initial point pollutant concentration in wetland flows through the phase av ...
DOI:
10.1007/s11356-018-3376-1

4. Emissions of Phthalates from Indoor Flat Materials in Chinese Residences

Author:
Shi, Shanshan; Cao, Jianping; Zhang, Yinping; Zhao, Bin
Source:
Environmental science & technology 2018 v.52 no.22 pp. 13166-13173
ISSN:
1520-5851
Subject:
pollutants,   etc   ; air; emissions; phthalates;     Show all 4 Subjects
Abstract:
... Phthalates are ubiquitous pollutants in residential environments. Indoor airborne phthalate concentrations in Chinese residences are comparable to, or even higher than, those of western countries. However, the major sources of phthalates in Chinese residences are not well-known. In this study, we measured the phthalates emission features of 23 flat materials used in Chinese residences in the labor ...
DOI:
10.1021/acs.est.8b03580

5. Input of Pollutants with Winter Precipitation onto Vorkuta Agglomeration Territory

Author:
Vasilevich, M.I.; Vasilevich, R.S.; Shmarikova, E.V.
Source:
Water resources 2018 v.45 no.3 pp. 338-347
ISSN:
0097-8078
Subject:
pollutants,   etc   ; cement; chemistry; snowpack;     Show all 4 Subjects
Abstract:
... The chemistry of snow cover in the territory of Vorkuta agglomeration is assessed. Pollutant inputs onto the territories of sanitary protection zones of industrial plants of Vorkuta C., including the mines of Vorkutinskaya and Yun’-Yaga and cement factory are calculated. Schematic maps are constructed for the distribution of substances in the examined territory. The input of pollutants onto cement ...
DOI:
10.1134/S0097807818030156

6. Visible light driven CdS/WO3 inverse opals with enhanced RhB degradation activity

Author:
Dong, You-zhen; Xue, Yun-shan; Yang, Wei-wei; You, Hua-ming; Su, Yang
Source:
Colloids and surfaces 2019 v.561 pp. 381-387
ISSN:
0927-7757
Subject:
pollutants,   etc   ; colloids; nanoparticles; opal; photocatalysis; photocatalysts; rhodamines; tungsten oxide;     Show all 8 Subjects
Abstract:
... A novel CdS nanoparticle decorated WO3 inverse opal nano-heterojunction photocatalyst is successfully prepared for Rhodamine B degradation. Although WO3 cannot be used for photocatalytic degradation of organic pollutants alone, it can significantly enhance photocatalytic efficiency through a Z-scheme photocatalytic system by coupling with CdS. The optimal pseudo-first-order reaction rate constant ...
DOI:
10.1016/j.colsurfa.2018.10.033

7. A novel gas-solids separator scheme of coupling cyclone with circulating granular bed filter (C-CGBF)

Author:
Gao, Sihong; Zhang, Dandan; Fan, Yiping; Lu, Chunxi
Source:
Journal of hazardous materials 2019 v.362 pp. 403-411
ISSN:
0304-3894
Subject:
air pollutants,   etc   ; cyclone separators; dust; filter cake; filters; fluidized beds;     Show all 6 Subjects
Abstract:
... A novel gas-solids separator scheme of coupling cyclone with circulating granular bed filter (C-CGBF) was proposed. The influences of the operating regimes, the inlet dust concentrations and the inlet gas flow rates on the scheme were investigated in a pilot-scale cold-model experimental apparatus. The pressure drop and the collection efficiency were measured and analyzed. It was shown that, diffe ...
DOI:
10.1016/j.jhazmat.2018.07.065

8. Real-time Monitoring of Pollutant Diffusion States and Source Using Fuzzy Adaptive Kalman Filter

Author:
Wang, Xudong; Zhang, Daqian; Chen, Liying
Source:
Water, air, and soil pollution 2018 v.229 no.7 pp. 238
ISSN:
0049-6979
Subject:
pollutants,   etc   ; algorithms; equations; monitoring; pollution;     Show all 5 Subjects
Abstract:
... An inverse analysis method for the real-time monitoring of pollutant diffusion is developed based on fuzzy adaptive Kalman filter (FAKF) coupled with weighted recursive least squares algorithm (WRLSA). In the monitoring process, the discrete diffusion states equation is established first. Then, the FAKF is adopted to realize the precise monitoring of the pollution diffusion states while the WRLSA ...
DOI:
10.1007/s11270-018-3885-z

9. Studying the Process of Pollutant Transport by Water Flowing under a Dam with a Rabbet

Author:
Shamsiev, M. N.; Zinnatullina, A. N.; Ibyatov, R. I.
Source:
Water resources 2018 v.45 no.4 pp. 560-564
ISSN:
0097-8078
Subject:
pollutants,   etc   ; dams (hydrology); water flow;     Show all 3 Subjects
Abstract:
... The process of pollutant transport by water flowing under a hydraulic structure is examined. The study is focused on the effect of the number of rabbet under the dam and their positions relative to its subsurface contour on the process of pollutant transport. ...
DOI:
10.1134/S009780781804019X

10. Enhanced removal of Cr(VI) by biochar with Fe as electron shuttles

Author:
Xu, Jingwen; Yin, Yongguang; Tan, Zhiqiang; Wang, Bowen; Guo, Xiaoru; Li, Xia; Liu, Jingfu
Source:
Journal of environmental sciences (China) 2019 v.78 pp. 109-117
ISSN:
1001-0742
Subject:
pollutants,   etc   ; adsorption; biochar; chromium; environmental fate; iron; moieties; pH; pyrolysis; remediation; soil; soil amendments; temperature;     Show all 13 Subjects
Abstract:
... Biochar is extensively used as an effective soil amendment for environmental remediation. In addition to its strong contaminant sorption capability, biochar also plays an important role in chemical transformation of contaminant due to its inherent redox-active moieties. However, the transformation efficiency of inorganic contaminants is generally very limited when the direct adsorption of contamin ...
DOI:
10.1016/j.jes.2018.07.009

11. Electrocoagulation using aluminium anodes activated with Mg, In and Zn alloying elements

Author:
Dura, Adelaide; Breslin, Carmel B.
Source:
Journal of hazardous materials 2019 v.366 pp. 39-45
ISSN:
0304-3894
Subject:
pollutants,   etc   ; alloys; aluminum; anodes; electrocoagulation; electrostatic interactions; energy; magnesium; phosphates; pollution control; surface area; wastewater; zinc;     Show all 13 Subjects
Abstract:
... The simultaneous removal of phosphates, Zn2+ and Orange II, in two synthetic wastewaters was achieved using Al–Mg and Al–Zn–In alloys as anodes at 11.7 mA cm–2 and a surface area to volume ratio of 19.0 m–1. Higher removal efficiencies were obtained with Al–Zn–In, attaining values of 95–96% for phosphate, 99% for Zn2+ and 88–96% for Orange II, while somewhat lower values were seen with Al–Mg, with ...
DOI:
10.1016/j.jhazmat.2018.11.094

12. Insights into the efficient adsorption of rhodamine B on tunable organo-vermiculites

Author:
Wang, Jie; Gao, Manglai; Shen, Tao; Yu, Mingming; Xiang, Yang; Liu, Jian
Source:
Journal of hazardous materials 2019 v.366 pp. 501-511
ISSN:
0304-3894
Subject:
pollutants,   etc   ; adsorbents; adsorption; benzene; hydrogen bonding; moieties; pollution control; rhodamines; surfactants; thermodynamics; vermiculite;     Show all 11 Subjects
Abstract:
... Organo-vermiculites (organo-Vts) were prepared by intercalation of four designed gemini surfactants (BDIN, BDHP, BDPD, BDPB) with different functional groups (imino, hydroxy, phenyl, pyridyl) into vermiculite (Vt). The structures and properties of four obtained organo-Vts were tested by a series of characterization techniques. Rhodamine B (RhB) was chosen as the target contaminant to investigate t ...
DOI:
10.1016/j.jhazmat.2018.12.031

13. Quantification of pharmaceutical compounds in wastewater samples by near infrared spectroscopy (NIR)

Author:
Quintelas, C.; Mesquita, D.P.; Ferreira, E.C.; Amaral, A.L.
Source:
Talanta 2019 v.194 pp. 507-513
ISSN:
0039-9140
Subject:
pollutants,   etc   ; activated sludge; chemometrics; estradiol; ibuprofen; models; near-infrared spectroscopy; prediction; sulfamethoxazole; wastewater; wastewater treatment;     Show all 11 Subjects
Abstract:
... The quantification of pollutants, as pharmaceuticals, in wastewater is an issue of special concern. Usually, typical methods to quantify these products are time and reagent consuming. This paper describes the development and validation of a Fourier transform near-infrared (FT-NIR) spectroscopy methodology for the quantification of pharmaceuticals in wastewaters. For this purpose, 276 samples obtai ...
DOI:
10.1016/j.talanta.2018.10.076

14. Influencing factors and prediction of ambient Peroxyacetyl nitrate concentration in Beijing, China

Author:
Zhang, Boya; Zhao, Bu; Zuo, Peng; Huang, Zhi; Zhang, Jianbo
Source:
Journal of environmental sciences (China) 2019 v.77 pp. 189-197
ISSN:
1001-0742
Subject:
pollutants,   etc   ; air pollution control; meteorological parameters; neural networks; nitrates; pollution; prediction; regression analysis; China;     Show all 9 Subjects
Abstract:
... Peroxyacyl nitrates (PANs) are important secondary pollutants in ground-level atmosphere. Accurate prediction of atmospheric pollutant concentrations is crucial to guide effective precautions for before and during specific pollution events. In this study, four models based on the back-propagation (BP) artificial neural network (ANN) and multiple linear regression (MLR) methods were used to predict ...
DOI:
10.1016/j.jes.2018.07.011

15. Influence of meteorological conditions on explosive increase in O3 concentration in troposphere

Author:
Wang, Jizhi; Yang, Yuanqin; Zhang, Yangmei; Niu, Tao; Jiang, Xiaofei; Wang, Yaqiang; Che, Huizheng
Source:
The Science of the total environment 2019 v.652 pp. 1228-1241
ISSN:
0048-9697
Subject:
pollutants,   etc   ; air; basins; meteorological parameters; mixing; nitrogen dioxide; ozone; pollution; river deltas; rivers; troposphere; China;     Show all 12 Subjects
Abstract:
... Ozone (O3) pollution in the troposphere, especially at the surface layer, has become a focus of attention in recent years. High O3 concentration events tend to occur frequently in north China, Yangtze, the Pearl River Delta, and the Sichuan Basin, among others. Studies on the meteorological contribution to O3 in the troposphere have become a new direction for the scientific community. This researc ...
DOI:
10.1016/j.scitotenv.2018.10.228

16. A critical review on designs and applications of microalgae-based photobioreactors for pollutants treatment

Author:
Vo, Hoang Nhat Phong; Ngo, Huu Hao; Guo, Wenshan; Nguyen, Thi Minh Hong; Liu, Yiwen; Liu, Yi; Nguyen, Dinh Duc; Chang, Soon Woong
Source:
The Science of the total environment 2019 v.651 pp. 1549-1568
ISSN:
0048-9697
Subject:
pollutants,   etc   ; biomass production; infrastructure; microalgae; models; personal care products; photobioreactors; sustainable development;     Show all 8 Subjects
Abstract:
... The development of the photobioreactors (PBs) is recently noticeable as cutting-edge technology while the correlation of PBs' engineered elements such as modellings, configurations, biomass yields, operating conditions and pollutants removal efficiency still remains complex and unclear. A systematic understanding of PBs is therefore essential. This critical review study is to: (1) describe the mod ...
DOI:
10.1016/j.scitotenv.2018.09.282

17. Evaluating freshwater mining sediment toxicity in Tasmania: Achieving strong multiple lines of evidence

Author:
Tyler Mehler, W.; Gagliardi, Bryant; Keough, Michael J.; Pettigrove, Vincent
Source:
The Science of the total environment 2019 v.651 pp. 1243-1252
ISSN:
0048-9697
Subject:
pollutants,   etc   ; Chironomus; bioassays; copper; freshwater; guidelines; mining; pH; principal component analysis; risk; sediments; sulfates; toxicity; Tasmania;     Show all 14 Subjects
Abstract:
... Mining-impacted aquatic systems could be at risk from an assortment of pollutants. The present study evaluated toxicity of mining site sediments from western Tasmania by conducting bioassays with two Australian freshwater species (Chironomus tepperi and Austrochiltonia subtenuis). The present study used multiple lines of evidence (LoE) to assess risk to aquatic biota and the potential sources of t ...
DOI:
10.1016/j.scitotenv.2018.09.245

18. How parked cars affect pollutant dispersion at street level in an urban street canyon? A CFD modelling exercise assessing geometrical detailing and pollutant decay rates

Author:
Gallagher, J.; Lago, C.
Source:
The Science of the total environment 2019 v.651 pp. 2410-2418
ISSN:
0048-9697
Subject:
pollutants,   etc   ; air pollution; carbon monoxide; computer software; fluid mechanics; geometry; man-made trails; models; wind speed;     Show all 9 Subjects
Abstract:
... Computational fluid dynamics (CFD) is a recognised modelling tool for simulating pollutant dispersion in urban street canyons. These studies require accurate street geometry, sufficient modelling experience and access to software to provide reliable outputs. Parked cars are known to act as a passive barrier and affects pollutant dispersion in an urban street canyon. This modelling study examines t ...
DOI:
10.1016/j.scitotenv.2018.10.135

19. Improved bauxite residue dealkalization by combination of aerated washing and electrodialysis

Author:
Zhang, Yaxian; Shi, Qi; Luo, Muxi; Wang, Hongtao; Qi, Xuejiao; Hou, Chia-Hung; Li, Fengting; Ai, Zisheng; Junior, Jose Tacares Araruna
Source:
Journal of hazardous materials 2019 v.364 pp. 682-690
ISSN:
0304-3894
Subject:
pollutants,   etc   ; aeration; alkalinity; bauxite; byproducts; electrodialysis; energy; liquids; pipes; sodium hydroxide; total dissolved solids; washing;     Show all 12 Subjects
Abstract:
... Bauxite residue, a major by-product of the alumina-producing Bayer process, is a serious environmental pollutant due to its high alkalinity. Here, we reported an operation system designed in our laboratory that included washing and electrodialysis dealkalization systems with aeration pipes. Washing with aeration releases a substantial amount of free alkali and attached alkali into water and increa ...
DOI:
10.1016/j.jhazmat.2018.10.023

20. Opinion paper about organic trace pollutants in wastewater: Toxicity assessment in a European perspective

Author:
Pedrazzani, Roberta; Bertanza, Giorgio; Brnardić, Ivan; Cetecioglu, Zeynep; Dries, Jan; Dvarionienė, Jolanta; García-Fernández, Antonio J.; Langenhoff, Alette; Libralato, Giovanni; Lofrano, Giusy; Škrbić, Biljana; Martínez-López, Emma; Meriç, Süreyya; Pavlović, Dragana Mutavdžić; Papa, Matteo; Schröder, Peter; Tsagarakis, Konstantinos P.; Vogelsang, Christian
Source:
The Science of the total environment 2019 v.651 pp. 3202-3221
ISSN:
0048-9697
Subject:
pollutants,   etc   ; analytical methods; aquatic ecosystems; bioassays; human health; monitoring; toxicity; wastewater;     Show all 8 Subjects
Abstract:
... This opinion paper focuses on the role of eco-toxicological tools in the assessment of possible impacts of emerging contaminants on the aquatic ecosystem, hence, on human health. Indeed, organic trace pollutants present in raw and treated wastewater are the pivot targets: a multidisciplinary approach allows defining the basic principles for managing this issue, from setting a proper monitoring cam ...
DOI:
10.1016/j.scitotenv.2018.10.027