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Pesquisa : D20.345.108.110 [Categoria DeCS]
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[PMID]:29478652
[Au] Autor:Liu M; Preis S; Kornev I; Hu Y; Wei CH
[Ad] Endereço:School of Environment and Energy, South China University of Technology, Guangzhou 510006, China; Guangdong Provincial Engineering and Technology Research Centre for Environmental Risk Prevention and Emergency Disposal, Guangzhou 510006, China. Electronic address: 907306129@qq.com.
[Ti] Título:Pulsed corona discharge for improving treatability of coking wastewater.
[So] Source:J Environ Sci (China);64:306-316, 2018 Feb.
[Is] ISSN:1001-0742
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:Coking wastewater (CW) contains toxic and macromolecular substances that inhibit biological treatment. The refractory compounds remaining in biologically treated coking wastewater (BTCW) provide chemical oxygen demand (COD) and color levels that make it unacceptable for reuse or disposal. Gas-phase pulsed corona discharge (PCD) utilizing mostly hydroxyl radicals and ozone as oxidants was applied to both raw coking wastewater (RCW) and BTCW wastewater as a supplemental treatment. The energy efficiency of COD, phenol, thiocyanate and cyanide degradation by PCD was the subject of the research. The cost-effective removal of intermediate oxidation products with addition of lime was also studied. The energy efficiency of oxidation was inversely proportional to the pulse repetition frequency: lower frequency allows more effective utilization of ozone at longer treatment times. Oxidative treatment of RCW showed the removal of phenol and thiocyanate at 800 pulses per second from 611 to 227mg/L and from 348 to 86mg/L, respectively, at 42kWh/m delivered energy, with substantial improvement in the BOD /COD ratio (from 0.14 to 0.43). The COD and color of BTCW were removed by 30% and 93%, respectively, at 20kWh/m , showing energy efficiency for the PCD treatment exceeding that of conventional ozonation by a factor of 3-4. Application of lime appeared to be an effective supplement to the PCD treatment of RCW, degrading COD by about 28% at an energy input of 28kWh/m and the lime dose of 3.0kg/m . The improvement of RCW treatability is attributed to the degradation of toxic substances and fragmentation of macromolecular compounds.
[Mh] Termos MeSH primário: Coque/análise
Resíduos Industriais/análise
Eliminação de Resíduos Líquidos/métodos
Águas Residuais/química
[Mh] Termos MeSH secundário: Análise da Demanda Biológica de Oxigênio
Compostos de Cálcio/química
Radical Hidroxila/química
Oxirredução
Óxidos/química
Ozônio/química
Fenol/química
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Calcium Compounds); 0 (Coke); 0 (Industrial Waste); 0 (Oxides); 0 (Waste Water); 3352-57-6 (Hydroxyl Radical); 339NCG44TV (Phenol); 66H7ZZK23N (Ozone); C7X2M0VVNH (lime)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180301
[Lr] Data última revisão:
180301
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180227
[St] Status:MEDLINE


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[PMID]:29406094
[Au] Autor:Joshi DR; Zhang Y; Zhang H; Gao Y; Yang M
[Ad] Endereço:State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China.
[Ti] Título:Characteristics of microbial community functional structure of a biological coking wastewater treatment system.
[So] Source:J Environ Sci (China);63:105-115, 2018 Jan.
[Is] ISSN:1001-0742
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:Nitrogenous heterocyclic compounds are key pollutants in coking wastewater; however, the functional potential of microbial communities for biodegradation of such contaminants during biological treatment is still elusive. Herein, a high throughput functional gene array (GeoChip 5.0) in combination with Illumina HiSeq2500 sequencing was used to compare and characterize the microbial community functional structure in a long run (500days) bench scale bioreactor treating coking wastewater, with a control system treating synthetic wastewater. Despite the inhibitory toxic pollutants, GeoChip 5.0 detected almost all key functional gene (average 61,940 genes) categories in the coking wastewater sludge. With higher abundance, aromatic ring cleavage dioxygenase genes including multi ring1,2diox; one ring2,3diox; catechol represented significant functional potential for degradation of aromatic pollutants which was further confirmed by Illumina HiSeq2500 analysis results. Response ratio analysis revealed that three nitrogenous compound degrading genes- nbzA (nitro-aromatics), tdnB (aniline), and scnABC (thiocyanate) were unique for coking wastewater treatment, which might be strong cause to increase ammonia level during the aerobic process. Additionally, HiSeq2500 elucidated carbozole and isoquinoline degradation genes in the system. These findings expanded our understanding on functional potential of microbial communities to remove organic nitrogenous pollutants; hence it will be useful in optimization strategies for biological treatment of coking wastewater.
[Mh] Termos MeSH primário: Biodegradação Ambiental
Eliminação de Resíduos Líquidos/métodos
Águas Residuais/química
Poluentes Químicos da Água/análise
[Mh] Termos MeSH secundário: Reatores Biológicos
Coque
Esgotos
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Coke); 0 (Sewage); 0 (Waste Water); 0 (Water Pollutants, Chemical)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180216
[Lr] Data última revisão:
180216
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180207
[St] Status:MEDLINE


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[PMID]:28453253
[Au] Autor:Crump D; Williams KL; Chiu S; Zhang Y; Martin JW
[Ad] Endereço:Ecotoxicology and Wildlife Health Division, Environment and Climate Change Canada, National Wildlife Research Centre, Carleton University , Ottawa, Ontario K1A 0H3, Canada.
[Ti] Título:Athabasca Oil Sands Petcoke Extract Elicits Biochemical and Transcriptomic Effects in Avian Hepatocytes.
[So] Source:Environ Sci Technol;51(10):5783-5792, 2017 May 16.
[Is] ISSN:1520-5851
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Petroleum coke or "petcoke" is a granular carbonaceous material produced during the upgrading of heavy crude oils, including bitumen. Petcoke dust was recently reported as an environmental contaminant in the Athabasca oil sands region, but the ecotoxicological hazards posed by this complex bitumen-derived material-including those to avian species-have not been characterized. In this study, solvent extracts (x) of delayed and fluid petcoke (xDP and xFP) were prepared and dissolved in dimethyl sulfoxide. A water-accommodated fraction of delayed petcoke (waDP) was also prepared. Graded concentrations of xDP, xFP, and waDP were administered to chicken and double-crested cormorant hepatocytes to determine effects on 7-ethoxyresorufin-O-deethylase (EROD) activity, porphyrin accumulation, and mRNA expression. Polycyclic aromatic compounds (PACs) were characterized, and xDP, xFP, and waDP had total PAC concentrations of 93 000, 270, and 5.3 ng/mL. The rank order of biochemical and transcriptomic responses was xDP > xFP > waDP (e.g., EROD EC were lower for xDP compared to xFP and waDP). A total of 22, 18, and 4 genes were altered following exposure to the highest concentrations of xDP, xFP, and waDP, respectively, using a chicken PCR array comprising 27 AhR-related genes. To provide more exhaustive coverage of potential toxicity pathways being impacted, two avian ToxChip PCR arrays-chicken and double-crested cormorant-were utilized, and xDP altered the expression of more genes than xFP. Traditional PAC-related toxicity pathways and novel mechanisms of action were identified in two avian species following petcoke extract exposure. Extrapolation to real-world exposure scenarios must consider the bioavailability of the extracted PACs compared to those in exposed organisms.
[Mh] Termos MeSH primário: Aves
Coque/toxicidade
Perfilação da Expressão Gênica
Campos de Petróleo e Gás
Petróleo/toxicidade
[Mh] Termos MeSH secundário: Animais
Citocromo P-450 CYP1A1/efeitos dos fármacos
Citocromo P-450 CYP1A1/metabolismo
Ecotoxicologia
Hepatócitos/efeitos dos fármacos
Hepatócitos/metabolismo
Poluição por Petróleo
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Coke); 0 (Petroleum); EC 1.14.14.1 (Cytochrome P-450 CYP1A1)
[Em] Mês de entrada:1712
[Cu] Atualização por classe:171227
[Lr] Data última revisão:
171227
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170429
[St] Status:MEDLINE
[do] DOI:10.1021/acs.est.7b00767


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[PMID]:28453248
[Au] Autor:Manzano CA; Marvin C; Muir D; Harner T; Martin J; Zhang Y
[Ad] Endereço:Aquatic Contaminants Research Division, Environment & Climate Change Canada , Burlington, ON, Canada.
[Ti] Título:Heterocyclic Aromatics in Petroleum Coke, Snow, Lake Sediments, and Air Samples from the Athabasca Oil Sands Region.
[So] Source:Environ Sci Technol;51(10):5445-5453, 2017 May 16.
[Is] ISSN:1520-5851
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The aromatic fractions of snow, lake sediment, and air samples collected during 2011-2014 in the Athabasca oil sands region were analyzed using two-dimensional gas chromatography following a nontargeted approach. Commonly monitored aromatics (parent and alkylated-polycyclic aromatic hydrocarbons and dibenzothiophenes) were excluded from the analysis, focusing mainly on other heterocyclic aromatics. The unknowns detected were classified into isomeric groups and tentatively identified using mass spectral libraries. Relative concentrations of heterocyclic aromatics were estimated and were found to decrease with distance from a reference site near the center of the developments and with increasing depth of sediments. The same heterocyclic aromatics identified in snow, lake sediments, and air were observed in extracts of delayed petroleum coke, with similar distributions. This suggests that petroleum coke particles are a potential source of heterocyclic aromatics to the local environment, but other oil sands sources must also be considered. Although the signals of these heterocyclic aromatics diminished with distance, some were detected at large distances (>100 km) in snow and surface lake sediments, suggesting that the impact of industry can extend >50 km. The list of heterocyclic aromatics and the mass spectral library generated in this study can be used for future source apportionment studies.
[Mh] Termos MeSH primário: Hidrocarbonetos Aromáticos Policíclicos/análise
Neve/química
Poluentes Químicos da Água/análise
[Mh] Termos MeSH secundário: Coque
Monitoramento Ambiental
Sedimentos Geológicos
Lagos
Campos de Petróleo e Gás
Petróleo
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Coke); 0 (Petroleum); 0 (Polycyclic Aromatic Hydrocarbons); 0 (Water Pollutants, Chemical)
[Em] Mês de entrada:1712
[Cu] Atualização por classe:171215
[Lr] Data última revisão:
171215
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170429
[St] Status:MEDLINE
[do] DOI:10.1021/acs.est.7b01345


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[PMID]:28699118
[Au] Autor:Zajusz-Zubek E; Radko T; Mainka A
[Ad] Endereço:Department of Air Protection, Silesian University of Technology, 22B Konarskiego St., 44-100, Gliwice, Poland. Elwira.Zajusz-Zubek@polsl.pl.
[Ti] Título:Fractionation of trace elements and human health risk of submicron particulate matter (PM1) collected in the surroundings of coking plants.
[So] Source:Environ Monit Assess;189(8):389, 2017 Aug.
[Is] ISSN:1573-2959
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:Samples of PM1 were collected in the surroundings of coking plants located in southern Poland. Chemical fractionation provided information on the contents of trace elements As, Cd, Co, Cr, Hg, Mn, Ni, Pb, Sb and Se in all mobile (F1-F3) and not mobile (F4) fractions of PM1 in the vicinity of large sources of emissions related to energochemical processing of coal during the summer. The determined enrichment factors indicate the influence of anthropogenic sources on the concentration of the examined elements contained in PM1 in the areas subjected to investigation. The analysis of health risk for the assumed scenario of inhabitant exposure to the toxic effect of elements, based on the values of the hazard index, revealed that the absorption of the examined elements contained in the most mobile fractions of particulate matter via inhalation by children and adults can be considered potentially harmless to the health of people inhabiting the surroundings of coking plants during the summer (HI < 1). It has been estimated that due to the inhalation exposure to carcinogenic elements, i.e., As, Cd, Co, Cr, Ni and Pb, contained in the most mobile fractions (F1 + F2) of PM1, approximately four adults and one child out of one million people living in the vicinity of the coking plants may develop cancer.
[Mh] Termos MeSH primário: Poluentes Atmosféricos/análise
Fracionamento Químico
Coque
Exposição Ambiental/estatística & dados numéricos
Monitoramento Ambiental
Oligoelementos/análise
[Mh] Termos MeSH secundário: Adulto
Criança
Carvão Mineral/análise
Seres Humanos
Material Particulado/análise
Plantas
Polônia
Medição de Risco
Estações do Ano
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Air Pollutants); 0 (Coal); 0 (Coke); 0 (Particulate Matter); 0 (Trace Elements)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171006
[Lr] Data última revisão:
171006
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170713
[St] Status:MEDLINE
[do] DOI:10.1007/s10661-017-6117-x


  6 / 745 MEDLINE  
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[PMID]:28570873
[Au] Autor:Joshi DR; Zhang Y; Gao Y; Liu Y; Yang M
[Ad] Endereço:State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
[Ti] Título:Biotransformation of nitrogen- and sulfur-containing pollutants during coking wastewater treatment: Correspondence of performance to microbial community functional structure.
[So] Source:Water Res;121:338-348, 2017 Sep 15.
[Is] ISSN:1879-2448
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Although coking wastewater is generally considered to contain high concentration of nitrogen- and sulfur-containing pollutants, the biotransformation processes of these compounds have not been well understood. Herein, a high throughput functional gene array (GeoChip 5.0) in combination with Illumina MiSeq sequencing of the 16S rRNA gene were used to identify microbial functional traits and their role in biotransformation of nitrogen- and sulfur-containing compounds in a bench-scale aerobic coking wastewater treatment system operated for 488 days. Biotransformation of nitrogen and sulfur-containing pollutants deteriorated when pH of the bioreactor was increased to >8.0, and the microbial community functional structure was significantly associated with pH (Mantels test, P < 0.05). The release of ammonia nitrogen and sulfate was correlated with both the taxonomic and functional microbial community structure (P < 0.05). Considering the abundance and correlation with the release of ammonia nitrogen and sulfate, aromatic dioxygenases (e.g. xylXY, nagG), nitrilases (e.g. nhh, nitrilase), dibenzothiophene oxidase (DbtAc), and thiocyanate hydrolase (scnABC) were important functional genes for biotransformation of nitrogen- and sulfur-containing pollutants. Functional characterization of taxa and network analysis suggested that Burkholderiales, Actinomycetales, Rhizobiales, Pseudomonadales, and Hydrogenophiliales (Thiobacillus) were key functional taxa. Variance partitioning analysis showed that pH and influent ammonia nitrogen jointly explained 25.9% and 35.5% of variation in organic pollutant degrading genes and microbial community structure, respectively. This study revealed a linkage between microbial community functional structure and the likely biotransformation of nitrogen- and sulfur-containing pollutants, along with a suitable range of pH (7.0-7.5) for stability of the biological system treating coking wastewater.
[Mh] Termos MeSH primário: Biotransformação
Coque
Nitrogênio
Águas Residuais
[Mh] Termos MeSH secundário: Bactérias
RNA Ribossômico 16S
Enxofre
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Coke); 0 (RNA, Ribosomal, 16S); 0 (Waste Water); 70FD1KFU70 (Sulfur); N762921K75 (Nitrogen)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171013
[Lr] Data última revisão:
171013
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170602
[St] Status:MEDLINE


  7 / 745 MEDLINE  
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[PMID]:28550777
[Au] Autor:Yang W; He C; Wang X; Zhang Y; Cheng Z; Dai B; Zhang L
[Ad] Endereço:School of the Environmental Science and Engineering, Yangzhou University, Yangzhou 225127, PR China. Electronic address: wlyang@yzu.edu.cn.
[Ti] Título:Disolved organic matter (DOM) removal from bio-treated coking wastewate using a new polymeric adsorbent modified with dimethylamino groups.
[So] Source:Bioresour Technol;241:82-87, 2017 Oct.
[Is] ISSN:1873-2976
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:In the current study a new recyclable aminated hyper-cross-linked polymeric adsorbent (A-HPA) was prepared for effective removal of DOM from BTCW. Possibly benefited from its unique structure of polystyrene matrix, sufficient aminated groups and high specific surface area, A-HPA could remove DOM from BTCW through the synergetic effect of π-π interactions, acid-base interactions and micropore filling, and exhibited the highest removal efficiency than the other adsorbents. Moreover, the exhausted A-HPA was amenable to effective regeneration by using acid and alkaline solution, allowing for repeated use with a constant removal efficiency. Field application of continuous 3-year fixed-bed runs demonstrated that A-HPA is capable of effectively removing DOM from BTCW with no significant capacity loss, and the treated effluent can be partially used as recycled water in production. All the above results demonstrated that A-HPA adsoption could serve as a good choice for the advanced treatment of bio-treated sewage effluent.
[Mh] Termos MeSH primário: Coque
Polímeros
Reciclagem
[Mh] Termos MeSH secundário: Adsorção
Esgotos
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Coke); 0 (Polymers); 0 (Sewage)
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171106
[Lr] Data última revisão:
171106
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170528
[St] Status:MEDLINE


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[PMID]:28437728
[Au] Autor:Shi L; Wang D; Cao D; Na C; Quan X; Zhang Y
[Ad] Endereço:Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China.
[Ti] Título:Is A/A/O process effective in toxicity removal? Case study with coking wastewater.
[So] Source:Ecotoxicol Environ Saf;142:363-368, 2017 Aug.
[Is] ISSN:1090-2414
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:The anaerobic-anoxic-oxic (A/A/O) process is the commonly used biological wastewater treatment process, especially for the coking wastewater. However, limit is known about its ability in bio-toxicity removal from wastewater. In this study, we evaluated the performance of A/A/O process in bio-toxicity removal from the coking wastewater, using two test species (i.e. crustacean (Daphnia magna) and zebra fish (Danio rerio)) in respect of acute toxicity, oxidative damage and genotoxicity. Our results showed that the acute toxicity of raw influent was reduced gradually along with A/A/O process and the effluent presented no acute toxicity to Daphnia magna (D. magna) and zebra fish. The reactive oxygen species (ROS) level in D. magna and zebra fish was promoted by the effluent from each tank of A/A/O process, showing that coking wastewater induced oxidative damage. Herein, the oxidative damage to D. magna was mitigated in the oxic tank, while the toxicity to zebra fish was reduced in the anoxic tank. The comet assays showed that genotoxicity to zebra fish was removed stepwise by A/A/O process, although the final effluent still presented genotoxicity to zebra fish. Our results indicated that the A/A/O process was efficient in acute toxicity removal, but not so effective in the removal of other toxicity (e.g. oxidative damage and genotoxicity). Considering the potential risks of wastewater discharge, further advanced toxicity mitigation technology should be applied in the conventional biological treatment process, and the toxicity index should be introduced in the regulation system of wastewater discharge.
[Mh] Termos MeSH primário: Coque/utilização
Mutagênicos/toxicidade
Estresse Oxidativo/efeitos dos fármacos
Águas Residuais/toxicidade
Poluentes Químicos da Água/toxicidade
Purificação da Água/métodos
[Mh] Termos MeSH secundário: Aerobiose
Anaerobiose
Animais
Coque/análise
Dano ao DNA
Daphnia/efeitos dos fármacos
Daphnia/metabolismo
Dose Letal Mediana
Testes de Toxicidade Aguda
Águas Residuais/análise
Poluentes Químicos da Água/análise
Peixe-Zebra/genética
Peixe-Zebra/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Coke); 0 (Mutagens); 0 (Waste Water); 0 (Water Pollutants, Chemical)
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170918
[Lr] Data última revisão:
170918
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170425
[St] Status:MEDLINE


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[PMID]:28411513
[Au] Autor:Chai C; Cheng Q; Wu J; Zeng L; Chen Q; Zhu X; Ma D; Ge W
[Ad] Endereço:Qingdao Engineering Research Center for Rural Environment, Qingdao Agricultural University, Qingdao 266109, China. Electronic address: chaichao1999@126.com.
[Ti] Título:Contamination, source identification, and risk assessment of polycyclic aromatic hydrocarbons in the soils of vegetable greenhouses in Shandong, China.
[So] Source:Ecotoxicol Environ Saf;142:181-188, 2017 Aug.
[Is] ISSN:1090-2414
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:The concentrations of 16 polycyclic aromatic hydrocarbons (PAHs) were analyzed in soil (n=196) and vegetable (n=30) collected from greenhouses, and also in the soil (n=27) collected from agriculture fields close to the greenhouses in Shandong Province, China. The total PAH concentration (∑ PAH) ranged from 152.2µg/kg to 1317.7µg/kg, within the moderate range in agricultural soils of China. Three-ring PAHs were the dominant species, with Phe (16.3%), Ace (13.1%), and Fl (10.5%) as the major compounds. The concentrations of low molecular weight (LMW ≤3 rings) PAHs were high in the east and north of Shandong, while the concentrations of high molecular weight (HMW ≥4 rings) PAHs were high in the south and west of the study area. The PAH level in soils in industrial areas (IN) was higher than those in transport areas (TR) and rural areas (RR). No significant difference in concentration of ∑ PAH and composition was observed in soils of vegetable greenhouses and field soils. PAH concentration exhibited a weakly positive correlation with alkaline nitrogen, available phosphorus in soil, but a weakly negative correlation with soil pH. However, no obvious correlation was observed between PAH concentration and organic matter of soil, or ages of vegetable greenhouses. ∑ PAH in vegetables ranged from 89.9µg/kg to 489.4µg/kg, and LMW PAHs in vegetables positively correlated with those in soils. The sources of PAHs were identified and quantitatively assessed through positive matrix factorization. The main source of PAHs in RR was coal combustion, while the source was traffic in TR and IN. Moreover, petroleum source, coke source, biomass combustion, or mixed sources also contributed to PAH pollution. According to Canadian soil quality guidelines, exposure to greenhouse soils in Shandong posed no risk to human health.
[Mh] Termos MeSH primário: Agricultura/métodos
Monitoramento Ambiental/métodos
Hidrocarbonetos Aromáticos Policíclicos/análise
Poluentes do Solo/análise
Solo/química
Verduras/química
[Mh] Termos MeSH secundário: China
Carvão Mineral/análise
Coque/análise
Seres Humanos
Medição de Risco
Solo/normas
Verduras/crescimento & desenvolvimento
Madeira/análise
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Coal); 0 (Coke); 0 (Polycyclic Aromatic Hydrocarbons); 0 (Soil); 0 (Soil Pollutants)
[Em] Mês de entrada:1709
[Cu] Atualização por classe:171116
[Lr] Data última revisão:
171116
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170416
[St] Status:MEDLINE


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[PMID]:28391104
[Au] Autor:von Gunten K; Alam MS; Hubmann M; Ok YS; Konhauser KO; Alessi DS
[Ad] Endereço:Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton T6G 2E3, Canada. Electronic address: vongunte@ualberta.ca.
[Ti] Título:Modified sequential extraction for biochar and petroleum coke: Metal release potential and its environmental implications.
[So] Source:Bioresour Technol;236:106-110, 2017 Jul.
[Is] ISSN:1873-2976
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:A modified Community Bureau of Reference (CBR) sequential extraction method was tested to assess the composition of untreated pyrogenic carbon (biochar) and oil sands petroleum coke. Wood biochar samples were found to contain lower concentrations of metals, but had higher fractions of easily mobilized alkaline earth and transition metals. Sewage sludge biochar was determined to be less recalcitrant and had higher total metal concentrations, with most of the metals found in the more resilient extraction fractions (oxidizable, residual). Petroleum coke was the most stable material, with a similar metal distribution pattern as the sewage sludge biochar. The applied sequential extraction method represents a suitable technique to recover metals from these materials, and is a valuable tool in understanding the metal retaining and leaching capability of various biochar types and carbonaceous petroleum coke samples.
[Mh] Termos MeSH primário: Coque
Petróleo
[Mh] Termos MeSH secundário: Metais Pesados
Campos de Petróleo e Gás
Esgotos
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Coke); 0 (Metals, Heavy); 0 (Petroleum); 0 (Sewage)
[Em] Mês de entrada:1706
[Cu] Atualização por classe:170605
[Lr] Data última revisão:
170605
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170410
[St] Status:MEDLINE



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