International Journal of Environmental Technology and Management最新文献_第5页

Degradation of thiophanate-methyl fungicide by photo-Fenton process using lab-scale annular and solar tubular reactors 环形反应器和太阳能管式反应器光fenton法降解硫代甲基杀菌剂

IF 0.6

International Journal of Environmental Technology and Management Pub Date : 2019-09-04 DOI: 10.1504/ijetm.2019.10023674

T. Borges, O. Chiavone-Filho, A. C. Teixeira, E. Foletto, G. Dotto, C. Nascimento

引用次数: 1

Evaluating the effects of elevated concentrations of urea, phosphogypsum and paper mill sludge on soil chemical, microbial and exoenzyme dynamics 评估尿素、磷石膏和造纸厂污泥浓度升高对土壤化学、微生物和外酶动力学的影响

IF 0.6

International Journal of Environmental Technology and Management Pub Date : 2019-09-04 DOI: 10.1504/ijetm.2019.10023679

S. Samal, C. Mishra, S. Sahoo

{"title":"Evaluating the effects of elevated concentrations of urea, phosphogypsum and paper mill sludge on soil chemical, microbial and exoenzyme dynamics","authors":"S. Samal, C. Mishra, S. Sahoo","doi":"10.1504/ijetm.2019.10023679","DOIUrl":"https://doi.org/10.1504/ijetm.2019.10023679","url":null,"abstract":"Urea, phosphogypsum (PG) and paper mill sludge (PMS) are commonly used to address soil nutrient deficiency. In this study, these chemicals were used at recommended agricultural dose (RAD) along with low and high concentrations to assess their effects on soil chemical and biological quality. Urea was applied at 0.5, 1.0, 1.5 g/kg soil, PG at 50, 100, 150 g/kg soil and PMS at 5, 10, 15 g/kg soil. Significant variation in soil pH, electrical conductivity and organic carbon (OC) were noticed in response to chemical concentration and treatment types. The percent OC reduction was high in PG and PMS treated soils. Percent nitrogen and phosphorous in soil increased with the concentrations of urea and PG. Invariably, lower bacterial and fungal population were observed in treated soils relative to control. Activities of amylase, cellulase, invertase, dehydrogenase and protease were inhibited at high concentration of all test chemicals with minor deviations. The study indicated that bacterial population and exoenzymes could be useful markers to evaluate soil toxicity due to hyper concentrations of urea, PG and PMS in soil.","PeriodicalId":13984,"journal":{"name":"International Journal of Environmental Technology and Management","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2019-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43671577","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Numerical simulation of pollutant dispersion in an urban street canyon - effects of elevated metro rail track 城市街道峡谷中污染物扩散的数值模拟——高架地铁轨道的影响

IF 0.6

International Journal of Environmental Technology and Management Pub Date : 2019-09-04 DOI: 10.1504/ijetm.2019.10023672

A. Singh, P. Bhatia

{"title":"Numerical simulation of pollutant dispersion in an urban street canyon - effects of elevated metro rail track","authors":"A. Singh, P. Bhatia","doi":"10.1504/ijetm.2019.10023672","DOIUrl":"https://doi.org/10.1504/ijetm.2019.10023672","url":null,"abstract":"Urban air pollution is one of the unsettled issues in urban development and planning process. Urban street canyons are one of the main focused areas of investigation due to the heavy emission of the pollutants from vehicles. In the present study, the effects of elevated metro rail track (EMRT) on pollutant dispersion phenomena have been studied using computational fluid dynamics (CFD) technique. As a practical application of a CFD model, k-e turbulence model was applied for airflow modelling. Species transport model was applied for pollutant dispersion modelling. Geometrical configuration of urban street canyon of aspect ratio 'one', with elevated metro rail track, has been considered. Numerical simulations were carried out for perpendicular wind flow. Pollutant concentrations, at various locations of the street canyon, were largely affected by the introduction of elevated metro rail track. These results were compared with the street canyon without elevated metro rail track. It has been observed that the pollutant concentration increased at lower region and decreased at the upper region of the street canyon. Variations were not uniformly distributed in street canyon volume. Contours and pollutant concentrations have been compared and discussed for different sampled locations in the street canyon.","PeriodicalId":13984,"journal":{"name":"International Journal of Environmental Technology and Management","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2019-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46916973","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Optimisation of crystal violet removal onto raw kaolin using response surface methodology 用响应面法优化高岭土对结晶紫的去除

IF 0.6

International Journal of Environmental Technology and Management Pub Date : 2019-09-04 DOI: 10.1504/ijetm.2019.10023671

Natiela Caponi, G. C. Collazzo, Julia S. Salla, S. L. Jahn, G. Dotto, E. Foletto

引用次数: 3

Desilication of calcined pulverised fly ash and use of silicate solution to prepare a mesoporous silica adsorbent for heavy metals in acid mine drainage 粉煤灰煅烧粉的脱硅及硅酸盐溶液对酸性矿山废水中重金属的吸附性能研究

IF 0.6

International Journal of Environmental Technology and Management Pub Date : 2019-09-04 DOI: 10.1504/ijetm.2019.10023676

T. Falayi, F. Ntuli, F. Okonta

引用次数: 2

Forecasting air pollution rates in industrial centres: a case study for Kocaeli-Turkey 预测工业中心的空气污染率：以土耳其科卡埃利为例

IF 0.6

International Journal of Environmental Technology and Management Pub Date : 2019-09-04 DOI: 10.1504/ijetm.2019.10023677

Aliye Atay, Y. Akdi, Y. Okkaoğlu, Faruk Çelikkanat

引用次数: 0

Modelling and simulation of batch adsorption of malachite green using groundnut shell waste-based activated carbon 花生壳废弃物活性炭分批吸附孔雀石绿的模拟研究

IF 0.6

International Journal of Environmental Technology and Management Pub Date : 2019-08-05 DOI: 10.1504/IJETM.2019.10022951

I. Dahlan, K. Kit

{"title":"Modelling and simulation of batch adsorption of malachite green using groundnut shell waste-based activated carbon","authors":"I. Dahlan, K. Kit","doi":"10.1504/IJETM.2019.10022951","DOIUrl":"https://doi.org/10.1504/IJETM.2019.10022951","url":null,"abstract":"Modelling and simulation of batch adsorption in malachite green dye removal using activated carbon prepared from groundnut shell waste was studied. Mathematical model was developed based on a two-resistance model which included external mass transfer coefficient and pore diffusion coefficient that controls the mass transfer process in batch adsorption. MATLAB program was written to solve ordinary differential equation from the model and to estimate mass transfer parameters by matching the simulation data with the experimental data from literature. From the results, it was found that the external mass transfer coefficient kf and pore diffusion coefficient Dp were estimated to be 6.2054 × 10−2 m/s and 2.2660 × 10−10 m2/s, respectively. Using the estimated parameters, simulation results showed that the model provided good correlation with the experimental data based on different initial concentrations. The estimated parameters were used to study the adsorption of dye under different variables such as initial dye concentration, volume of dye solution, adsorbent particle size and mass of adsorbent. It was concluded that the dye removal efficiency was higher for lower initial dye concentration, higher mass of adsorbent, lower volume of dye solution and smaller adsorbent particle size.","PeriodicalId":13984,"journal":{"name":"International Journal of Environmental Technology and Management","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2019-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45322398","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Removal of Cr(VI) and Cu(II) from wastewater by an Argopecten irradians shell powder adsorbent 荧光镜贝壳粉吸附剂去除废水中的Cr（VI）和Cu（II）

IF 0.6

International Journal of Environmental Technology and Management Pub Date : 2019-08-02 DOI: 10.1504/IJETM.2019.101391

Yanhong Xu, Guangrong Huang

引用次数: 1

Wind-assist marine demonstration for ferries: prospects for saving diesel fuel with wind power 渡轮的风力辅助海上示范:利用风力节省柴油的前景

IF 0.6

International Journal of Environmental Technology and Management Pub Date : 2019-08-02 DOI: 10.1504/IJETM.2019.10022837

T. Lipman, J. Lidicker

引用次数: 2

Correlations between on-site screening methods and laboratory analyses of oil-contaminated fuelling station sites 受石油污染加油站现场筛选方法与实验室分析之间的相关性

IF 0.6

International Journal of Environmental Technology and Management Pub Date : 2019-08-02 DOI: 10.1504/IJETM.2019.10022880

Tsung-Nan Weng, Chen‐Wuing Liu, Wen Liu

{"title":"Correlations between on-site screening methods and laboratory analyses of oil-contaminated fuelling station sites","authors":"Tsung-Nan Weng, Chen‐Wuing Liu, Wen Liu","doi":"10.1504/IJETM.2019.10022880","DOIUrl":"https://doi.org/10.1504/IJETM.2019.10022880","url":null,"abstract":"In order to assess the potential of soil contamination from petroleum-based products and determine the soil samples required for laboratory analysis, investigators generally use portable instruments such as photo ionisation detectors (PIDs) or flame ionisation detectors (FIDs) for on-site screening. In this study, PIDs, FIDs, and turbidimetric test kits were integratively used to screen 47 soil samples from 28 fuelling station sites suspected of total petroleum hydrocarbon (TPH) contamination. The PIDs and FIDs achieved high accuracy in screening sites contaminated by gasoline (TPHC6-C9); the test kits yielded high accuracy in screening those contaminated by diesel fuel (TPHC10-C40), as well as high correlation with laboratory analysis. Regression analyses showed high coefficients of determination (R2), reaching up to 0.819 (PIDs versus TPHC6-C9), 0.788 (FIDs versus TPHC6-C9), and 0.653 (test kits versus TPHC10-C40). The integration of PIDs, FIDs, and test kits with laboratory analysis can significantly increase the efficiency and accuracy of soil contamination investigations. We suggest that the application of turbidimetric test kits to screen potential oil-contaminated fuelling station sites can produce accurate assessment results.","PeriodicalId":13984,"journal":{"name":"International Journal of Environmental Technology and Management","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2019-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44418919","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0