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  1 / 52134 MEDLINE  
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[PMID]:28815343
[Au] Autor:Njuguna SM; Yan X; Gituru RW; Wang Q; Wang J
[Ad] Endereço:Sino-Africa Joint Research Center, Chinese Academy of Sciences, Wuhan, 430074, China.
[Ti] Título:Assessment of macrophyte, heavy metal, and nutrient concentrations in the water of the Nairobi River, Kenya.
[So] Source:Environ Monit Assess;189(9):454, 2017 Aug 16.
[Is] ISSN:1573-2959
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:Nairobi River tributaries are the main source of the Athi River. The Athi River basin is the fourth largest and important drainage system in Kenya covering 650 km and with a drainage area of 70,000 km . Its water is used downstream by about four million people not only for irrigation but also for domestic purposes. However, its industrial, raw sewer, and agricultural pollution is alarming. In order to understand distribution and concentration of heavy metals and nutrients in the water of Nairobi River, 28 water samples were collected in the rainy season (October) of 2015 and dry season (June) of 2016. Cd, Cu, Cr, Zn, As, Pb, Fe, Ni, Mn, NO , and TP were analyzed. Only Cr, Pb, Fe, and Mn had concentrations exceeding the WHO permissible limit for drinking water. Out of the 28 sites examined in the study, one site had Pb exceeding the WHO recommended level. Similarly, three sites exceeded the same level for Cr. Only three sites were within the WHO permissible limits for drinking water for Mn while just four sites were within USEPA limit for Fe. Industrial effluent, domestic sewerage, agricultural activities, and solid waste were the main sources of pollution. Significant spatial variation of both heavy metals and nutrients concentration was observed and emanated from point source pollution. Eleven out of 31 macrophytes species that were identified along the river and its tributaries are effective heavy metal and nutrient bioaccumulators and may be used in phytoremediation.
[Mh] Termos MeSH primário: Monitoramento Ambiental
Metais Pesados/análise
Poluentes da Água/análise
[Mh] Termos MeSH secundário: Agricultura
Quênia
Nitrogênio/análise
Fósforo/análise
Rios/química
Estações do Ano
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Metals, Heavy); 0 (Water Pollutants); 27YLU75U4W (Phosphorus); N762921K75 (Nitrogen)
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171102
[Lr] Data última revisão:
171102
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170817
[St] Status:MEDLINE
[do] DOI:10.1007/s10661-017-6159-0


  2 / 52134 MEDLINE  
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[PMID]:28365845
[Au] Autor:Yuan C; Liu L; Ye J; Ren G; Zhuo D; Qi X
[Ad] Endereço:Department of Land Resources Management, China Agricultural University, Beijing, 100193, China.
[Ti] Título:Assessing the effects of rural livelihood transition on non-point source pollution: a coupled ABM-IECM model.
[So] Source:Environ Sci Pollut Res Int;24(14):12899-12917, 2017 May.
[Is] ISSN:1614-7499
[Cp] País de publicação:Germany
[La] Idioma:eng
[Ab] Resumo:Water pollution caused by anthropogenic activities and driven by changes in rural livelihood strategies in an agricultural system has received increasing attention in recent decades. To simulate the effects of rural household livelihood transition on non-point source (NPS) pollution, a model combining an agent-based model (ABM) and an improved export coefficient model (IECM) was developed. The ABM was adopted to simulate the dynamic process of household livelihood transition, and the IECM was employed to estimate the effects of household livelihood transition on NPS pollution. The coupled model was tested in a small catchment in the Dongting Lake region, China. The simulated results reveal that the transition of household livelihood strategies occurred with the changes in the prices of rice, pig, and labor. Thus, the cropping system, land-use intensity, resident population, and number of pigs changed in the small catchment from 2000 to 2014. As a result of these changes, the total nitrogen load discharged into the river initially increased from 6841.0 kg in 2000 to 8446.3 kg in 2004 and then decreased to 6063.9 kg in 2014. Results also suggest that rural living, livestock, paddy field, and precipitation alternately became the main causes of NPS pollution in the small catchment, and the midstream region of the small catchment was the primary area for NPS pollution from 2000 to 2014. Despite some limitations, the coupled model provides an innovative way to simulate the effects of rural household livelihood transition on NPS pollution with the change of socioeconomic factors, and thereby identify the key factors influencing water pollution to provide valuable suggestions on how agricultural environmental risks can be reduced through the regulation of the behaviors of farming households in the future.
[Mh] Termos MeSH primário: Monitoramento Ambiental
Fósforo
[Mh] Termos MeSH secundário: Animais
China
Nitrogênio
Rios
Suínos
Poluentes Químicos da Água
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Water Pollutants, Chemical); 27YLU75U4W (Phosphorus); N762921K75 (Nitrogen)
[Em] Mês de entrada:1706
[Cu] Atualização por classe:171103
[Lr] Data última revisão:
171103
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170402
[St] Status:MEDLINE
[do] DOI:10.1007/s11356-017-8812-0


  3 / 52134 MEDLINE  
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[PMID]:28364206
[Au] Autor:Smirnova E; Alexeev M
[Ad] Endereço:Department of Environmental Safety, Saint Petersburg State University of Architecture and Civil Engineering, Vtoraja Krasnoarmejskaja ul. 4, St. Petersburg, 190005, Russia.
[Ti] Título:The problem of dephosphorization using waste recycling.
[So] Source:Environ Sci Pollut Res Int;24(14):12835-12846, 2017 May.
[Is] ISSN:1614-7499
[Cp] País de publicação:Germany
[La] Idioma:eng
[Ab] Resumo:The article considers optimizing methods for wastewater treatment systems. Nutrients (nitrogen and phosphorus) are discharged from the river basin of the northwest Russia. Disruption of ecological safety and healthy state of water basins takes place when excess amount of nitrogen and phosphorus is discharged from wastewater. This results in eutrophication that is increased growth of seaweeds and, therefore, in ecological system disruption. The cities of the northwest region are short of funds for renovation of water treatment systems. However, the new solution lies in improvement of biological water treatment system by means of chemical injection. The main research task is implementation of methods for enhanced biological phosphorus removal from domestic sewage. The problem of recycling and ecological safety of rivers within the northwest of Russia and the Baltic Sea is not solved completely. That is why for wastewater dephosphorization, the authors suggest using sulfuric acid production waste at chemical plant "Ammophos," Cherepovets (ferrous sulfate FeSO ·7H O and phosphogypsum СаSO ·Ð  О ), as reagents. The advantage of these reagents is their low cost. The authors show the efficiency of the new optimal reagent's combination. Filtering the wastewater through sand filters after secondary settlers increases the total phosphorus removal efficiency up to 90%. The high effect of all types of phosphorus and total nitrogen removal from wastewater can be resulted from the features of micelle creation during coagulation.
[Mh] Termos MeSH primário: Fósforo
Eliminação de Resíduos Líquidos
[Mh] Termos MeSH secundário: Países Bálticos
Sulfato de Cálcio
Cidades
Nitrogênio
Federação Russa
Esgotos
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Sewage); 13397-24-5 (phosphogypsum); 27YLU75U4W (Phosphorus); N762921K75 (Nitrogen); WAT0DDB505 (Calcium Sulfate)
[Em] Mês de entrada:1706
[Cu] Atualização por classe:171103
[Lr] Data última revisão:
171103
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170401
[St] Status:MEDLINE
[do] DOI:10.1007/s11356-017-8857-0


  4 / 52134 MEDLINE  
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[PMID]:28333066
[Au] Autor:Yang S; Jin P; Wang XC; Zhang Q; Chen X
[Ad] Endereço:School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No. 13 Yanta Road, Xi'an, Shaanxi 710055, China E-mail: yangshengjiong@163.com; State Key Laboratory of Architecture and Technology in Western China (XAUAT), No. 13 Yanta Road, Xi'an, Shaanxi 710055,
[Ti] Título:Phosphorus removal from aqueous solution using a novel granular material developed from building waste.
[So] Source:Water Sci Technol;75(5-6):1500-1511, 2017 03.
[Is] ISSN:0273-1223
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:In this study, a granular material (GM) developed from building waste was used for phosphate removal from phosphorus-containing wastewater. Batch experiments were executed to investigate the phosphate removal capacity of this material. The mechanism of removal proved to be a chemical precipitation process. The characteristics of the material and resulting precipitates, the kinetics of the precipitation and Ca liberation processes, and the effects of dosage and pH were investigated. The phosphate precipitation and Ca liberation processes were both well described by a pseudo-second-order kinetic model. A maximum precipitation capacity of 0.51 ± 0.06 mg g and a liberation capacity of 6.79 ± 0.77 mg g were measured under the experimental conditions. The processes reached equilibrium in 60 min. The initial solution pH strongly affected phosphate removal under extreme conditions (pH <4 and pH >10). The precipitates comprised hydroxyapatite and brushite. This novel GM can be considered a promising material for phosphate removal from wastewater.
[Mh] Termos MeSH primário: Fósforo/isolamento & purificação
Esgotos/química
Águas Residuais/química
Poluentes Químicos da Água/isolamento & purificação
[Mh] Termos MeSH secundário: Adsorção
Cálcio/isolamento & purificação
Concentração de Íons de Hidrogênio
Cinética
Modelos Teóricos
Fosfatos/isolamento & purificação
Soluções
Fatores de Tempo
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Phosphates); 0 (Sewage); 0 (Solutions); 0 (Waste Water); 0 (Water Pollutants, Chemical); 27YLU75U4W (Phosphorus); SY7Q814VUP (Calcium)
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171102
[Lr] Data última revisão:
171102
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170323
[St] Status:MEDLINE
[do] DOI:10.2166/wst.2017.019


  5 / 52134 MEDLINE  
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[PMID]:28333061
[Au] Autor:Zhao S; Shi X; Li C; Zhang S; Sun B; Wu Y; Zhao S
[Ad] Endereço:Water Conservancy and Civil Engineering College, Inner Mongolia Agricultural University, Huhhot 010018, China E-mail: zhaoshengnan2005@163.com.
[Ti] Título:Diffusion flux of phosphorus nutrients at the sediment-water interface of the Ulansuhai Lake in northern China.
[So] Source:Water Sci Technol;75(5-6):1455-1465, 2017 03.
[Is] ISSN:0273-1223
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Overlying water and sediment samples were collected from 11 locations in Ulansuhai Lake in June of 2012 to determine the concentration of dissolved inorganic phosphorus (DIP) in the interstitial water, overlying water and sediment and to estimate the diffusion flux of DIP at the sediment-water interface. The DIP levels in overlying water were 0.004-0.185 mg/L (average = 0.062 mg/L), while they were 0.05-0.25 mg/L (average = 0.124 mg/L) in the interstitial water in the 0-2 cm surface sediment. Moreover, the annual mean exchange flux of DIP in the sediment was between -0.092 mg/m ·d and 0.053 mg/m ·d, and this occurred via internal source action in most areas. After area weighting, it is estimated that the exchange capacity of DIP at the sediment-water interface of the Ulansuhai Lake is 1.30 t/a. These findings indicate internal loading of phosphorus in sediment of the Ulansuhai Lake; thus, the diffusion of DIP in the interstitial water has effects on the lake, with a degree of influence of 2.7% to 81.5%.
[Mh] Termos MeSH primário: Sedimentos Geológicos/química
Lagos/química
Fósforo/análise
Água/química
[Mh] Termos MeSH secundário: China
Difusão
Condutividade Elétrica
Geografia
Concentração de Íons de Hidrogênio
Solubilidade
Poluentes Químicos da Água/análise
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Water Pollutants, Chemical); 059QF0KO0R (Water); 27YLU75U4W (Phosphorus)
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171102
[Lr] Data última revisão:
171102
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170323
[St] Status:MEDLINE
[do] DOI:10.2166/wst.2017.017


  6 / 52134 MEDLINE  
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[PMID]:28333054
[Au] Autor:Xing B; Chen H; Zhang X
[Ad] Endereço:Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China E-mail: hlchen@cioc.ac.cn; University of Chinese Academy of Sciences, Beijing 100049, China.
[Ti] Título:Removal of organic phosphorus and formaldehyde in glyphosate wastewater by CWO and the lime-catalyzed formose reaction.
[So] Source:Water Sci Technol;75(5-6):1390-1398, 2017 03.
[Is] ISSN:0273-1223
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Glyphosate (PMG) wastewater with 40-600 mg/L organic phosphorus (OP) and 1-4% CH O was treated by catalytic wet oxidation (CWO) and the lime-catalyzed formose reaction to remove total phosphorus (TP) and improve biodegradability. Activated carbons (ACs) modified by H O oxidation and thermal treatment with melamine were used as CWO catalysts and characterized by N adsorption/desorption and XPS. The CWO experiments were performed in an autoclave reactor at 110-130 °C and 1.0 MPa. The modified AC showed higher catalytic activity than the parent AC due to the introduction of nitrogen-containing functional groups, exhibited over 90% OP removal for various real PMG wastewaters, and had good stability for 20 consecutive CWO runs. The CWO effluents were further treated by lime at 80 °C to remove TP and CH O. The treated effluents, containing 0.5-12 mg/L TP and 20-60 mg/L CH O, showed good biodegradability with a BOD /COD ratio of 0.31-0.41. The combination of CWO and lime is an effective treatment method prior to biological treatment for solving the problems of OP and CH O encountered by the glyphosate industry.
[Mh] Termos MeSH primário: Compostos de Cálcio/química
Carboidratos/química
Formaldeído/isolamento & purificação
Glicina/análogos & derivados
Óxidos/química
Fósforo/isolamento & purificação
Água/química
[Mh] Termos MeSH secundário: Biodegradação Ambiental
Catálise
Carvão Vegetal/química
Glicina/química
Nitrogênio/análise
Oxirredução
Espectroscopia Fotoeletrônica
Eliminação de Resíduos Líquidos
Águas Residuais/análise
Poluentes Químicos da Água/isolamento & purificação
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Calcium Compounds); 0 (Carbohydrates); 0 (Oxides); 0 (Waste Water); 0 (Water Pollutants, Chemical); 059QF0KO0R (Water); 16291-96-6 (Charcoal); 1HG84L3525 (Formaldehyde); 27YLU75U4W (Phosphorus); 4632WW1X5A (glyphosate); 8069-42-9 (formose sugars); C7X2M0VVNH (lime); N762921K75 (Nitrogen); TE7660XO1C (Glycine)
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171102
[Lr] Data última revisão:
171102
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170323
[St] Status:MEDLINE
[do] DOI:10.2166/wst.2017.006


  7 / 52134 MEDLINE  
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[PMID]:28333045
[Au] Autor:Pintucci C; Carballa M; Varga S; Sarli J; Peng L; Bousek J; Pedizzi C; Ruscalleda M; Tarragó E; Prat D; Colica G; Picavet M; Colsen J; Benito O; Balaguer M; Puig S; Lema JM; Colprim J; Fuchs W; Vlaeminck SE
[Ad] Endereço:Center for Microbial Ecology and Technology (CMET), Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000 Gent, Belgium.
[Ti] Título:The ManureEcoMine pilot installation: advanced integration of technologies for the management of organics and nutrients in livestock waste.
[So] Source:Water Sci Technol;75(5-6):1281-1293, 2017 03.
[Is] ISSN:0273-1223
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Manure represents an exquisite mining opportunity for nutrient recovery (nitrogen and phosphorus), and for their reuse as renewable fertilisers. The ManureEcoMine proposes an integrated approach of technologies, operated in a pilot-scale installation treating swine manure (83.7%) and Ecofrit (16.3%), a mix of vegetable residues. Thermophilic anaerobic digestion was performed for 150 days, the final organic loading rate was 4.6 kgCOD m d , with a biogas production rate of 1.4 Nm m d . The digester was coupled to an ammonia side-stream stripping column and a scrubbing unit for free ammonia inhibition reduction in the digester, and nitrogen recovery as ammonium sulphate. The stripped digestate was recirculated daily in the digester for 15 days (68% of the digester volume), increasing the gas production rate by 27%. Following a decanter centrifuge, the digestate liquid fraction was treated with an ultrafiltration membrane. The filtrate was fed into a struvite reactor, with a phosphorus recovery efficiency of 83% (as orthophosphate). Acidification of digestate could increment the soluble orthophosphate concentration up to four times, enhancing phosphorus enrichment in the liquid fraction and its recovery via struvite. A synergistic combination of manure processing steps was demonstrated to be technologically feasible to upgrade livestock waste into refined, concentrated fertilisers.
[Mh] Termos MeSH primário: Gado
Adubos/análise
Compostos Orgânicos/análise
Gerenciamento de Resíduos/métodos
Resíduos/análise
[Mh] Termos MeSH secundário: Ácidos/química
Amônia/análise
Compostos de Amônio/análise
Anaerobiose
Animais
Centrifugação
Precipitação Química
Membranas Artificiais
Nitrogênio/análise
Permeabilidade
Fósforo/análise
Projetos Piloto
Estruvita/química
Suínos
Temperatura Ambiente
Ultrafiltração
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Acids); 0 (Ammonium Compounds); 0 (Manure); 0 (Membranes, Artificial); 0 (Organic Chemicals); 0 (Waste Products); 27YLU75U4W (Phosphorus); 7664-41-7 (Ammonia); AW3EJL1462 (Struvite); N762921K75 (Nitrogen)
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171102
[Lr] Data última revisão:
171102
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170323
[St] Status:MEDLINE
[do] DOI:10.2166/wst.2016.559


  8 / 52134 MEDLINE  
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[PMID]:28272054
[Au] Autor:Parés Viader R; Jensen PE; Ottosen LM; Thomsen TP; Ahrenfeldt J; Hauggaard-Nielsen H
[Ad] Endereço:Department of Civil Engineering, Technical University of Denmark, Building 118, 2800 Kongens Lyngby, Denmark E-mail: rapv@byg.dtu.dk.
[Ti] Título:Comparison of phosphorus recovery from incineration and gasification sewage sludge ash.
[So] Source:Water Sci Technol;75(5-6):1251-1260, 2017 03.
[Is] ISSN:0273-1223
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Incineration of sewage sludge is a common practice in many western countries. Gasification is an attractive option because of its high energy efficiency and flexibility in the usage of the produced gas. However, they both unavoidably produce sewage sludge ashes, a material that is rich in phosphorus, but which is commonly landfilled or used in construction materials. With current uncertainty in phosphate rock supply, phosphorus recovery from sewage sludge ashes has become interesting. In the present work, ashes from incineration and gasification of the same sewage sludge were compared in terms of phosphorus extractability using electrodialytic (ED) methods. The results show that comparable recovery rates of phosphorus were achieved with a single ED step for incineration ashes and a sequential combination of two ED steps for gasification ashes, which was due to a higher influence of iron and/or aluminium in phosphorus solubility for the latter. A product with lower level of metallic impurities and comparable to wet process phosphoric acid was eventually obtained from gasification ashes. Thus, gasification becomes an interesting alternative to incineration also in terms of phosphorus separation.
[Mh] Termos MeSH primário: Gases/análise
Incineração
Fósforo/isolamento & purificação
Esgotos/química
[Mh] Termos MeSH secundário: Diálise
Condutividade Elétrica
Eletroquímica
Concentração de Íons de Hidrogênio
[Pt] Tipo de publicação:COMPARATIVE STUDY; JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Gases); 0 (Sewage); 27YLU75U4W (Phosphorus)
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171102
[Lr] Data última revisão:
171102
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170308
[St] Status:MEDLINE
[do] DOI:10.2166/wst.2016.620


  9 / 52134 MEDLINE  
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[PMID]:28272048
[Au] Autor:Uzukwu CC; Barraclough MJ; Dionisi D
[Ad] Endereço:Materials and Chemical Engineering Group, School of Engineering, University of Aberdeen, Aberdeen AB24 3UE, UK E-mail: chukwuemeka.uzukwu@abdn.ac.uk.
[Ti] Título:Experimental investigation of a new process for treatment and valorisation of pot ale wastewaters.
[So] Source:Water Sci Technol;75(5-6):1194-1203, 2017 03.
[Is] ISSN:0273-1223
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:This study investigated an innovative process for the treatment and valorisation of pot ale wastewater. The first phase was to balance the pH to precipitate nitrogen, phosphorus and magnesium, recovering them as fertiliser; the second phase investigated the evaporation of water, reducing the volume of liquid to be transported to an anaerobic digester. In the pH balancing phase we investigated the effect of the final pH, in the range 8-11, on the removal of calcium, magnesium, ammonia, phosphorus and copper. We observed that, for all the species, most of the precipitation occurred when pH was increased from 8 to 9. By pH balancing, a removal from the liquid phase of up to 65% of ammonia and 60% of total phosphorus was obtained. Calcium and magnesium also precipitated from the liquid phase, giving solids with the following composition, calculated from liquid phase measurements: 24-27% magnesium, 4-5% nitrogen, 16-18% phosphorus. We investigated the evaporation process at pH 6 and 10 and at atmospheric pressure and under vacuum. The results showed that only a few % of the chemical oxygen demand (COD) evaporates, indicating very little loss of organic substance for anaerobic digestion. Mass balances for this process in a medium-size whisky distillery were also carried out.
[Mh] Termos MeSH primário: Bebidas
Resíduos Industriais/análise
Águas Residuais/química
Purificação da Água/métodos
[Mh] Termos MeSH secundário: Amônia/análise
Anaerobiose
Análise da Demanda Biológica de Oxigênio
Meio Ambiente
Concentração de Íons de Hidrogênio
Metais/análise
Nitrogênio/análise
Fósforo/análise
Pressão
Volatilização
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Industrial Waste); 0 (Metals); 0 (Waste Water); 27YLU75U4W (Phosphorus); 7664-41-7 (Ammonia); N762921K75 (Nitrogen)
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171102
[Lr] Data última revisão:
171102
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170308
[St] Status:MEDLINE
[do] DOI:10.2166/wst.2016.614


  10 / 52134 MEDLINE  
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[PMID]:28272033
[Au] Autor:Willén A; Junestedt C; Rodhe L; Pell M; Jönsson H
[Ad] Endereço:Department of Energy and Technology, Swedish University of Agricultural Sciences, Box 7032, SE-750 07 Uppsala, Sweden E-mail: agnes.willen@slu.se; Swedish Institute of Agricultural and Environmental Engineering, Box 7033, SE-750 07 Uppsala, Sweden.
[Ti] Título:Sewage sludge as fertiliser - environmental assessment of storage and land application options.
[So] Source:Water Sci Technol;75(5-6):1034-1050, 2017 03.
[Is] ISSN:0273-1223
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Sewage sludge (SS) contains beneficial plant nutrients and organic matter, and therefore application of SS on agricultural land helps close nutrient loops. However, spreading operations are restricted to certain seasons and hence the SS needs to be stored. Storage and land application of SS are both potential sources of greenhouse gases and ammonia, leading to global warming, acidification and eutrophication. Covering the stored SS, treating it with urea and choosing the correct time for land application all have the potential to reduce emissions from the system. Using life cycle assessment (LCA), this study compares storage and land application options of SS in terms of global warming potential (GWP), acidification potential, eutrophication potential and primary energy use. The system with covered storage has the lowest impact of all categories. Systems with autumn application are preferable to spring application for all impact categories but, when nitrate leaching is considered, spring application is preferable in terms of eutrophication and primary energy use and, for some SS treatments, GWP. Ammonia addition reduces nitrous oxide and ammonia emissions during storage, but increases these emissions after land application. Storage duration has a large impact on GWP, while amount of chemical nitrogen fertiliser substituted has a large impact on primary energy use.
[Mh] Termos MeSH primário: Meio Ambiente
Fertilizantes/análise
Esgotos
[Mh] Termos MeSH secundário: Ácidos/química
Poluentes do Ar/análise
Amônia/análise
Sequestro de Carbono
Eutrofização
Aquecimento Global
Metano/análise
Nitratos/análise
Nitrogênio/análise
Óxido Nitroso/análise
Fósforo/análise
Estações do Ano
Fatores de Tempo
Poluentes Químicos da Água/análise
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Acids); 0 (Air Pollutants); 0 (Fertilizers); 0 (Nitrates); 0 (Sewage); 0 (Water Pollutants, Chemical); 27YLU75U4W (Phosphorus); 7664-41-7 (Ammonia); K50XQU1029 (Nitrous Oxide); N762921K75 (Nitrogen); OP0UW79H66 (Methane)
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171102
[Lr] Data última revisão:
171102
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170308
[St] Status:MEDLINE
[do] DOI:10.2166/wst.2016.584



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