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Environmental Science and Pollution Research International

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https://www.readbyqxmd.com/read/28233215/multi-spectral-and-thermodynamic-analysis-of-the-interaction-mechanism-between-cu-2-and-%C3%AE-amylase-and-impact-on-sludge-hydrolysis
#1
Ruiqi Zhou, Hong Liu, Guangying Hou, Lei Ju, Chunguang Liu
An increasing amount of heavy metals (e.g., Cu(2+)) is being discharged into sewage treatment plants and is accumulating in sludge, which is toxic to the enzyme in sludge or soil when the sludge is used as fertilizer, resulting in unfavorable effect on the biological treatment of sludge and the circulation and conversion of materials in soil. In this research, effect of Cu(2+) on sludge hydrolysis by α-amylase is studied from the respect of concentration and components of soluble organic matter in sludge, using three-dimensional fluorescence spectra...
February 24, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28233214/genotype-dependent-alleviation-effects-of-exogenous-gsh-on-salinity-stress-in-cotton-is-related-to-improvement-in-chlorophyll-content-photosynthetic-performance-and-leaf-root-ultrastructure
#2
Wasim Ibrahim, Imrul Mosaddek Ahmed, Xianhong Chen, Feibo Wu
Soil salinity is a major abiotic stress that is constraining crop growth and productivity. Greenhouse hydroponic experiments were performed using salt-sensitive (cv. Zhongmian 41) and tolerant (Zhong 9806) cotton seedlings to evaluate how different genotypes responded to salinity stress in the presence of exogenous GSH (reduced glutathione). Cotton plants grown in 150 mM NaCl showed severe reduction in plant height, root length, and shoot and root fresh/dry weight. Salinity also caused reduction in photosynthesis and chlorophyll content, but increase in malondialdehyde (MDA) content...
February 23, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28233213/uninhibited-biosynthesis-and-release-of-phytosiderophores-in-the-presence-of-heavy-metal-hm-favors-hm-remediation
#3
Chandan Kumar Gupta, Bhupinder Singh
Production of phytosiderophore (PS) has been causally related to iron-deficiency tolerance in cereals. However, PS can also chelate heavy metal and thus may represent a viable phytoextraction strategy on contaminated soils. Two separate experiments were conducted to assess the affect of heavy metal on phytosiderophore biosynthesis and their release in the rhizosphere of wheat. Root exudates were collected from 10-day-old wheat seedlings raised on Fe-deficient nutrient solution in the presence of 2.5, 5.0, and 10 mM concentration of different heavy metals (Cd, Pb, and Ni) for 3-day period, for the phytosiderophore and the heavy metal analysis...
February 23, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28233212/ecotoxicity-assessment-of-particulate-matter-emitted-from-heavy-duty-diesel-powered-vehicles-influence-of-leaching-conditions
#4
Albertina X R Corrêa, Renan C Testolin, Mariana M Torres, Sylvie Cotelle, Jean-Jacques Schwartz, Maurice Millet, Claudemir M Radetski
Concerns regarding the environmental impact of diesel exhaust particulate matter (DPM) have increased in recent years. Following emission to the atmosphere, these fine materials can sorb many contaminants at their surface, which can subsequently be released, for instance, due to physicochemical environmental changes. The desorption of contaminants from particulate matter will increase the environmental pollution and can promote ecotoxicological effects. In this context, the objective of this study was to assess the aquatic ecotoxicity profile of extracts of DPM obtained at two different pH values...
February 23, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28233211/comparison-of-soil-heavy-metal-pollution-caused-by-e-waste-recycling-activities-and-traditional-industrial-operations
#5
Kailing He, Zehang Sun, Yuanan Hu, Xiangying Zeng, Zhiqiang Yu, Hefa Cheng
The traditional industrial operations are well recognized as an important source of heavy metal pollution, while that caused by the e-waste recycling activities, which have sprouted in some developing countries, is often overlooked. This study was carried out to compare the status of soil heavy metal pollution caused by the traditional industrial operations and the e-waste recycling activities in the Pearl River Delta, and assess whether greater attention should be paid to control the pollution arising from e-waste recycling activities...
February 23, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28233210/photooxidation-of-herbicide-amitrole-in-the-presence-of-fulvic-acid
#6
Ivan P Pozdnyakov, Peter S Sherin, Victoria A Salomatova, Marina V Parkhats, Vjacheslav P Grivin, Boris M Dzhagarov, Nikolai M Bazhin, Victor F Plyusnin
Fulvic acid (Henan ChangSheng Corporation) photoinduced degradation of non-UVA-absorbing herbicide amitrole (3-amino-1,2,4-triazole, AMT) as a way for its removal from polluted water was investigated in details. It was shown that the main primary species generated by fulvic acid under UVA radiation, triplet state and hydrated electron, are not directly involved in the herbicide degradation. AMT decays in reactions with secondary intermediates, reactive oxygen species, formed in reactions of the primary ones with dissolved oxygen...
February 23, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28233209/effects-on-heavy-metal-accumulation-in-freshwater-fishes-species-tissues-and-sizes
#7
Yuyu Jia, Lin Wang, Zhipeng Qu, Chaoyi Wang, Zhaoguang Yang
Three fish species (Carassius auratus, Pelteobagrus fulvidraco, and Squaliobarbus curriculus) were collected from Xiang River near Changsha City, Southern China. The concentrations of heavy metals including arsenic (As), cadmium (Cd), copper (Cu), iron (Fe), manganese (Mn), lead (Pb), and zinc (Zn) in the muscle, gill, and liver of three species were determined by the inductively coupled plasma mass spectrometry method. One-way analysis of variance (ANOVA) was introduced to determine the significant variations (p < 0...
February 23, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28233208/mercury-health-risk-assessment-among-a-young-adult-lebanese-population
#8
Pierre J Obeid, Souha A Fares, Ghada N Farhat, Bilal El-Khoury, Rana M Nassif, John El-Nakat, Hassan R Dhaini
Mercury (Hg) exposure represents a significant public health concern at a global level. This study aims at assessing Hg exposure and risk among Lebanese young adults based on Hg biomonitoring and seafood intake. A group of 166 young adults were administered a questionnaire to assess Hg exposure and were asked to provide a hair sample. Risk assessment was performed: (1) using the US Environmental Protection Agency Hazard Quotient (HQ) model based on fish intake and previously studied local fish Hg concentrations, and (2) by determining the total hair Hg concentration (THHg) using continuous flow-chemical vapor generation atomic absorption spectrometry...
February 23, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28233207/knowledge-attitude-and-practice-towards-ergonomics-among-undergraduates-of-faculty-of-dentistry-tanta-university-egypt
#9
Rania M El-Sallamy, Salwa A Atlam, Ibrahim Kabbash, Sanaa Abd El-Fatah, Asmaa El-Flaky
Ergonomics is the scientific study of people and their working environment. Dentistry is a profession that generally produces various musculoskeletal disorders. If ergonomic principles are applied in the field of dentistry, it helps to prevent occupational ergonomic health hazards and provides more comfort to the dentist and patient. To assess knowledge, attitudes, and practice of ergonomics during routine dental procedures among undergraduates of Faculty of Dentistry, Tanta University, cross-sectional study was conducted among dental students of Tanta University during the year 2015-2016 using a predesigned selfadministered questionnaire...
February 23, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28233206/mechanical-ventilator-as-a-major-cause-of-infection-and-drug-resistance-in-intensive-care-unit
#10
Marwa M E Abd-Elmonsef, Dalia Elsharawy, Ayman S Abd-Elsalam
Ventilator-associated pneumonia (VAP) is the most frequent infection in intensive care units (ICU). It is associated with high rates of long morbidity and mortality. Management of a case of VAP is often said to add $40,000 to hospital costs USA. All these data directed our interest to study the etiology, risk factors, and antibiotic susceptibility patterns of VAP in ICU of Tanta University Hospital. This study included 36 cases of VAP. Endotracheal aspirates were obtained from all cases and microbiologically analyzed...
February 23, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28233205/polycyclic-aromatic-hydrocarbons-in-the-leaves-of-twelve-plant-species-along-an-urbanization-gradient-in-shanghai-china
#11
Jing Liang, Hailan Fang, Taolin Zhang, Xingxiang Wang
Plants, particularly their leaves, play an important role in filtering both gas-phase and particle-phase polycyclic aromatic hydrocarbons (PAHs). However, many studies have focused on the accumulation and adsorption functions of plant leaves, possibly underestimating the effects that plants have on air quality. Therefore, eight tree species from different locations in Shanghai were selected to assess PAH filtering (via adsorption and capture) using washed and unwashed plant leaves. The differences in the total PAH contents in the washed leaves were constant for the different species across the different sampling sites...
February 23, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28233204/the-effects-of-endophytic-bacterium-samr12-on-sedum-alfredii-hance-metal-ion-uptake-and-the-expression-of-three-transporter-family-genes-after-cadmium-exposure
#12
Fengshan Pan, Sha Luo, Jing Shen, Qiong Wang, Jiayuan Ye, Qian Meng, Yingjie Wu, Bao Chen, Xuerui Cao, Xiaoe Yang, Ying Feng
A hydroponic experiment was conducted to investigate the effects of an endophytic bacterium SaMR12 on Sedum alfredii Hance metal ion accumulation, chlorophyll concentration, and the expression of three metal transporter families, zinc-regulated transporters, iron-regulated transporter-like protein (ZIP); natural resistance-associated macrophage protein; and heavy metal ATPase (HMA) at different Cd treatment levels. The results showed that at relatively low Cd conditions (≤25 μM), SaMR12 demonstrated a 19...
February 23, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28233203/advanced-treatment-of-municipal-secondary-effluent-by-catalytic-ozonation-using-fe3o4-ceo2-mwcnts-as-efficient-catalyst
#13
Zhiyong Bai, Jianlong Wang, Qi Yang
The advanced treatment of municipal secondary effluent was performed by catalytic ozonation using Fe3O4-CeO2/MWCNTs as catalyst. The experimental results showed that in catalytic ozonation system, the removal efficiency of soluble COD was more than 46% after 30 min reaction, and about 36% of effluent organic matters (EfOMs) were mineralized, which was four times higher than that in single ozonation system. Moreover, proteins, humic acids, and UV254 decreased obviously after 30 min reaction, but polysaccharides did not significantly decrease...
February 23, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28233202/effects-of-straw-and-biochar-amendments-on-aggregate-stability-soil-organic-carbon-and-enzyme-activities-in-the-loess-plateau-china
#14
Man Zhang, Gong Cheng, Hao Feng, Benhua Sun, Ying Zhao, Haixin Chen, Jing Chen, Miles Dyck, Xudong Wang, Jianguo Zhang, Afeng Zhang
Soil from the Loess Plateau of China is typically low in organic carbon and generally has poor aggregate stability. Application of organic amendments to these soils could help to increase and sustain soil organic matter levels and thus to enhance soil aggregate stability. A field experiment was carried out to evaluate the effect of the application of wheat straw and wheat straw-derived biochar (pyrolyzed at 350-550 °C) amendments on soil aggregate stability, soil organic carbon (SOC), and enzyme activities in a representative Chinese Loess soil during summer maize and winter wheat growing season from 2013 to 2015...
February 23, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28233201/effect-of-ferrous-sulfate-and-nitrohumic-acid-neutralization-on-the-leaching-of-metals-from-a-combined-bauxite-residue
#15
Jie Ren, Jidong Liu, Juan Chen, Xiaolian Liu, Fasheng Li, Ping Du
Bauxite residue neutralization is intended to open opportunities for revegetation and reuse of the residue. Ferrous sulfate (FS) and nitrohumic acid (NA) were two kinds of materials studied for pH reduction of the residue from 10.6 to 8.3 and 8.1, respectively. The effects of FS and NA on the leaching of metals from a combined bauxite residue were investigated by using sequential and multiple extraction procedures. Neutralization with FS and NA restricted the leaching of Al, V, and Pb from the residue but promoted the leaching of Fe, Cu, Mn, and Ni, consistent with the changes in the potentially mobile fractions...
February 23, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28233200/association-of-urinary-cadmium-with-risk-of-diabetes-a-meta-analysis
#16
Yujie Li, Yun Zhang, Weijing Wang, Yili Wu
The association between urinary cadmium and diabetes risk remains controversial. PubMed, Web of Science, China National Knowledge Infrastructure, and Wanfang Data updated on 21 June 2016 were searched for eligible publications. Pooled odds ratio (OR) with 95% confidence interval (CI) of diabetes for highest versus lowest level of urinary cadmium was calculated by using fixed-effect model or random-effect model. Dose-response relationship between urinary cadmium and diabetes was estimated by restricted cubic spline...
February 23, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28233199/interactional-effect-of-cerium-and-manganese-on-no-catalytic-oxidation
#17
Yanli Liang, Yufen Huang, Hailong Zhang, Li Lan, Ming Zhao, Maochu Gong, Yaoqiang Chen, Jianli Wang
To preferably catalyze the oxidation of NO to NO2 in diesel after-treatment system, a series of CeO2-MnO x composite oxides was supported on silica-alumina material by the co-impregnation method. The maximum conversion of NO of the catalyst with a Ce/Mn weight ratio of 5:5 was improved by around 40%, compared to the supported manganese-only or cerium-only sample. And its maximum reaction rate was 0.056 μmol g(-1) s(-1) at 250 °C at the gas hourly space velocity of 30,000 h(-1). The experimental results suggested that Ce-Mn solid solution was formed, which could modulate the valence state of cerium and manganese and exhibit great redox properties...
February 23, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28233198/attempts-to-minimize-nitrogen-oxide-emission-from-diesel-engine-by-using-antioxidant-treated-diesel-biodiesel-blend
#18
Hasan Khondakar Rashedul, Md Abdul Kalam, Haji Hassan Masjuki, Yew Heng Teoh, Heoy Geok How, Islam Mohammad Monirul, Hassan Kazi Imdadul
The study represents a comprehensive analysis of engine exhaust emission variation from a compression ignition (CI) diesel engine fueled with diesel-biodiesel blends. Biodiesel used in this investigation was produced through transesterification procedure from Moringa oleifera oil. A single cylinder, four-stroke, water-cooled, naturally aspirated diesel engine was used for this purpose. The pollutants from the exhaust of the engine that are monitored in this study are nitrogen oxide (NO), carbon monoxide (CO), hydrocarbon (HC), and smoke opacity...
February 23, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28233197/research-on-magnetic-separation-for-complex-nickel-deep-removal-and-magnetic-seed-recycling
#19
Yiqin Qiu, Xiao Xiao, Ziwei Ye, Zhijie Guan, Shuiyu Sun, Jie Ren, Pingfan Yan
This study investigated the deep removal of complex nickel from simulated wastewater using magnetic separation and magnetic seed recycling. Nano-magnetite (Fe3O4) was used as the magnetic seed. The flocculant applied was N,N-bis-(dithiocarboxy) ethanediamine (EDTC), a highly efficient heavy metal chelating agent included in dithiocarbamate (DTC). Important investigated parameters included hydraulic retention time, magnetic seed dosage, and magnetic field strength. The study also explored the magnetic flocculation mechanism involved in the reaction...
February 23, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28229384/relationship-of-meteorological-factors-and-acute-stroke-events-in-kaunas-lithuania-in-2000-2010
#20
Laura Tamasauskiene, Daiva Rastenyte, Ricardas Radisauskas, Abdonas Tamosiunas, Domantas Tamasauskas, Vidmantas Vaiciulis, Daina Kranciukaite-Butylkiniene, Egle Milinaviciene
Some researchers have hypothesised that meteorological factors may have an impact on acute cerebrovascular diseases. The aim of this study was to determine an impact of some meteorological factors on occurrence of acute cerebrovascular events in the middle-aged Kaunas population. Kaunas stroke register data were used. Data on meteorological factors for the time period from 2000 to 2010 were obtained from the Lithuanian Hydrometeorological Service Kaunas Meteorological Station. We analysed 4038 cases with stroke...
February 23, 2017: Environmental Science and Pollution Research International
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