Revista Ambiente e Agua最新文献_第3页

Remoção de microcistina-LR da Microcystis aeruginosa utilizando bagaço de cana-de-açúcar in natura e carvão ativado 用天然甘蔗渣和活性炭去除铜绿微囊藻微囊藻-LR

Revista Ambiente e Agua Pub Date : 2016-01-20 DOI: 10.4136/AMBI-AGUA.1785

Aline Almeida, F. Passig, Thomaz Aurélio Pagioro, Priscila Tiemi Higuti do Nascimento, K. Q. D. Carvalho

{"title":"Remoção de microcistina-LR da Microcystis aeruginosa utilizando bagaço de cana-de-açúcar in natura e carvão ativado","authors":"Aline Almeida, F. Passig, Thomaz Aurélio Pagioro, Priscila Tiemi Higuti do Nascimento, K. Q. D. Carvalho","doi":"10.4136/AMBI-AGUA.1785","DOIUrl":"https://doi.org/10.4136/AMBI-AGUA.1785","url":null,"abstract":"Microcystin-LR is a type of toxin released by the Microcystis aeruginosa cyanobacteria found in water sources used for human consumption. It can cause illness and even death if not completely removed in conventional water treatment. The retention of this toxin is often accomplished by the adsorption process in activated carbon in water treatment plants. In this study, a comparison was made between the retention of microcystin-LR by activated carbon and by sugarcane bagasse in natura applied as a bio-adsorbent. Adsorption experiments were performed after the physical and chemical properties of the bio adsorbent and the activated carbon were characterized. The adsorption performance was evaluated by the toxin removal efficiency and the maximum adsorption capacity. Average removal efficiencies of the toxin resulted in 65.25; 41.74 and 11.75% for the activated carbon and 24.15; 18.92 and 12.27% for the sugarcane bagasse for concentrations of 2.36, 3.33 and 3.83 µg L-1, respectively. The bio adsorbent presented removal efficiency for the toxin similar to that observed in the activated carbon for the concentration of 3.83 µg L-1. Maximum adsorption capacity obtained with better linear adjustment to the Freundlich isotherm was 6,047.84 µg g-1 (toxin concentration of 3.83 µg L-1) for sugarcane bagasse and 338.61 µg g-1 (toxin concentration of 2.36 µg L-1) for activated carbon.","PeriodicalId":38374,"journal":{"name":"Revista Ambiente e Agua","volume":"159 1","pages":"188-197"},"PeriodicalIF":0.0,"publicationDate":"2016-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4136/AMBI-AGUA.1785","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70665890","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: 7

Qualidade da água de três locais com potenciais fontes de contaminação no Rio Taquari, RS RS塔夸里河三个潜在污染源的水质

Revista Ambiente e Agua Pub Date : 2016-01-20 DOI: 10.4136/AMBI-AGUA.1789

Thais Muller, Camille Eichelberger Granada, Raul Antônio Sperotto

引用次数: 5

Atividades de lactato desidrogenase e malato desidrogenase de Astyanax bimaculatus (lambari) da bacia hidrográfica do rio Una como biomarcadoras de impacto ambiental 乌纳河流域双斑Astyanax bimaculatus（lambari）乳酸脱氢酶和苹果酸脱氢酶作为环境影响生物标志物的活性

Revista Ambiente e Agua Pub Date : 2015-10-28 DOI: 10.4136/AMBI-AGUA.1615

Anne Caroline Ribeiro, Maria Tereza Oliveira Batista, Edson Rodrigues Junior, M. F. D. Oliveira, Gannabathula Sree Vani, E. Rodrigues, C. N. K. Suda

{"title":"Atividades de lactato desidrogenase e malato desidrogenase de Astyanax bimaculatus (lambari) da bacia hidrográfica do rio Una como biomarcadoras de impacto ambiental","authors":"Anne Caroline Ribeiro, Maria Tereza Oliveira Batista, Edson Rodrigues Junior, M. F. D. Oliveira, Gannabathula Sree Vani, E. Rodrigues, C. N. K. Suda","doi":"10.4136/AMBI-AGUA.1615","DOIUrl":"https://doi.org/10.4136/AMBI-AGUA.1615","url":null,"abstract":"Fish spend their whole life cycle in water and receive the influence of its physico-chemical and biological components over time. The activities of lactate dehydrogenase (LDH) and malate dehydrogenase (MDH) of aquatic organisms can be altered by pollutants in the water. The aim of this study was to determine whether the activities of LDH and MDH in the gills and liver of Astyanax bimaculatus (lambari do rabo amarelo or Two Spots Astyanax in English), can be used as biomarkers of environmental impact in the Una River (SP) Basin. The lambaris for these studies were collected from three water bodies of this basin designated as p1 (Itaim River), p2 (stream by the road to the Municipality of Remedios) and p3 (lake on the road to the Municipality of Dr. Jose Luiz Cembranelli). The gills and liver were homogenized and this material was then centrifuged and the supernatant was used for LDH and MDH activity assays using the spectrophotometric method, which determined oxidation rate of NADH. The activities of hepatic LDH and MDH and gill MDH were not statistically different in the lambaris collected at the three sites. In the gill tissue, LDH activity of lambaris from p3 was lower than that from p1.This inhibition of LDH in lambaris from p3, as well as the inferior quality of water there, suggest the occurrence of pollutants in this water. It is concluded that the LDH of lambari gills has potential for use as a biochemical marker of environmental impact in the Una River.","PeriodicalId":38374,"journal":{"name":"Revista Ambiente e Agua","volume":"10 1","pages":"793-803"},"PeriodicalIF":0.0,"publicationDate":"2015-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70665255","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: 4

Evolução e desafios no gerenciamento dos resíduos sólidos urbanos no Brasil 巴西城市固体废物管理的演变与挑战

Revista Ambiente e Agua Pub Date : 2015-10-20 DOI: 10.4136/AMBI-AGUA.1635

Victor Fernandez Nascimento, Anahi Chimini Sobral, Pedro R. Andrade, J. P. B. Ometto

{"title":"Evolução e desafios no gerenciamento dos resíduos sólidos urbanos no Brasil","authors":"Victor Fernandez Nascimento, Anahi Chimini Sobral, Pedro R. Andrade, J. P. B. Ometto","doi":"10.4136/AMBI-AGUA.1635","DOIUrl":"https://doi.org/10.4136/AMBI-AGUA.1635","url":null,"abstract":"The generation of municipal solid waste (MSW) has increased over time in Brazil, along with changes in waste quality, which gives rise to discussions regarding the importance of properly managing and disposing of these wastes. Currently, issues involving the management of MSW have a central focus in carrying out public policies. Effective implementation of the National Solid Waste Policy (NSWP) - Law no. 12,305/2010 is expected to bring changes in the panorama of solid waste in Brazil. This work is a review of literature that aims to address some aspects of the MSW in Brazil, considering some changes expected to occur in the public sector after NSWP implementation. Some data is presented and discussed in order to foster an understanding of the evolution of MSW management in Brazil and to highlight challenges for the NSWP compliance with regulation, such as the expansion of the collection and treatment of MSW, more active societal involvement in waste-separation processes and the difficulty of eradicating open dumps and replacing them with landfills. In general, while there were improvements in MSW management, they were insufficient to address the changes proposed by the NSWP in order to establish integrated MSW management that would be effective and sustainable for both the environment and society. This indicates the need for urgent change in the structure of the MSW sector in Brazil.","PeriodicalId":38374,"journal":{"name":"Revista Ambiente e Agua","volume":"10 1","pages":"889-902"},"PeriodicalIF":0.0,"publicationDate":"2015-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4136/AMBI-AGUA.1635","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70664884","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: 28

Identificação de fontes de geração de resíduos sólidos em uma unidade de alimentação e nutrição 确定食品和营养单位固体废物产生的来源

Revista Ambiente e Agua Pub Date : 2015-10-20 DOI: 10.4136/AMBI-AGUA.1640

Mariana Gardin Alves, Mariko Ueno

{"title":"Identificação de fontes de geração de resíduos sólidos em uma unidade de alimentação e nutrição","authors":"Mariana Gardin Alves, Mariko Ueno","doi":"10.4136/AMBI-AGUA.1640","DOIUrl":"https://doi.org/10.4136/AMBI-AGUA.1640","url":null,"abstract":"Collective food service is considered a major source of food waste. In order to acquire detailed data of food loss and waste generation in this sector, the waste of one Food and Nutrition Unit (FNU) was classified into categories: inventory losses and storage losses in food processing, distribution and return. The study sought to identify and quantify the waste generated over five days at a FNU located inside an automobile parts manufacturing shop in the city of Taubate, SP, and we proposed an action plan to reduce the environmental impact based upon the three r's principle. In order to serve 2,740 meals, 486.6 kg of solid waste were generated, resulting in an average per capita of 0.177 kg / day of waste. The waste was distributed as follows: 58.0% in food processing, 31.9% in returns and 10.1% in stock and storage. Of the total solid waste, 85% was organic compounds of unwanted portions of vegetables and meat, food scraps, leftovers from dinners, expired food and food samples, and 15% was composed of waste paper/cardboard, plastics and cans. The largest waste generation was due to the disposal of inedible food, food scraps produced and rest-intake, these results are related to waste food, 100% intended for composting. As for the other waste, 80% was destined for recycling and 20% was taken to the landfill.","PeriodicalId":38374,"journal":{"name":"Revista Ambiente e Agua","volume":"10 1","pages":"874-888"},"PeriodicalIF":0.0,"publicationDate":"2015-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4136/AMBI-AGUA.1640","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70665163","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: 13

Distribution and contamination of metals in the soil of Guandu Watershed 官渡流域土壤中金属的分布与污染

Revista Ambiente e Agua Pub Date : 2015-10-20 DOI: 10.4136/AMBI-AGUA.1639

A. Ferreira

{"title":"Distribution and contamination of metals in the soil of Guandu Watershed","authors":"A. Ferreira","doi":"10.4136/AMBI-AGUA.1639","DOIUrl":"https://doi.org/10.4136/AMBI-AGUA.1639","url":null,"abstract":"Coastal areas provide important benefits to humans in terms of food resources and ecosystem services. At the same time, human activities can have significant negative impacts on ecosystem health. Thus, control of watershed pollution is both necessary and essential in order to reduce and systematically eliminate the detrimental consequences that are evident in marine and estuarine ecosystems. The present study investigated the distribution of metals at the Guandu Watershed. Five sampling sites were selected for the soil analysis. Samples were collected from February 2013 to December 2014 and analysed for concentrations of As, Cd, Zn, Cu, Pb, Cr, Ni, and Co, using ICP. For control, some samples were used in uncontaminated areas outside the direct effect of chemical industries. The data indicate the presence of metals at the research sites. While the levels of contamination are still slightly below the peak concentrations established by Brazilian legislation, they are approaching levels of concern, particularly with regard to As, Cd, Pb and Cr. The results indicate that the use of water from the Guandu Watershed for recreational purposes and fishing is harmful to both human health and the environment.","PeriodicalId":38374,"journal":{"name":"Revista Ambiente e Agua","volume":"10 1","pages":"758-769"},"PeriodicalIF":0.0,"publicationDate":"2015-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4136/AMBI-AGUA.1639","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70665095","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

Performance of a full scale Fenton reactor used to remove phenol in a plant valorization of waste from pulp and paper industry 全尺寸Fenton反应器在纸浆造纸废水处理中的性能研究

Revista Ambiente e Agua Pub Date : 2015-10-20 DOI: 10.4136/AMBI-AGUA.1638

E. Skoronski, A. Ferrari, Mylena Fernandes, C. Ely, Jair J. João

引用次数: 3

Efeito da aplicação de diferentes lâminas de irrigação e doses de nitrogênio e potássio na produção do capim Tanzânia 不同灌溉深度和氮、钾用量对坦桑尼亚牧草生产的影响

Revista Ambiente e Agua Pub Date : 2015-06-24 DOI: 10.4136/AMBI-AGUA.1595

Ednaldo Miranda de Oliveira, Jair Soares Da Silva Filho, R. A. D. Oliveira, Reginaldo Miranda de Oliveira, P. Cecon, A. C. Cóser

{"title":"Efeito da aplicação de diferentes lâminas de irrigação e doses de nitrogênio e potássio na produção do capim Tanzânia","authors":"Ednaldo Miranda de Oliveira, Jair Soares Da Silva Filho, R. A. D. Oliveira, Reginaldo Miranda de Oliveira, P. Cecon, A. C. Cóser","doi":"10.4136/AMBI-AGUA.1595","DOIUrl":"https://doi.org/10.4136/AMBI-AGUA.1595","url":null,"abstract":"O estudo da interacao entre nitrogenio, potassio e quantidade de agua sao importantes na definicao das doses ideais desses fatores, a fim de otimizar a producao das forragem. Assim, teve-se como objetivo neste trabalho avaliar os efeitos da aplicacao de diferentes lâminas de agua e doses de nitrogenio e potassio, na producao do capim Tanzânia, no sul do Estado do Tocantins. Para estudar a influencia das lâminas de agua e das combinacoes das doses de N e K2O no capim, nos periodos seco e chuvoso do ano, determinou-se ao longo do experimento a producao de forragem. A maxima produtividade no mesmo periodo foi de 8.706 kg ha-1, com a dose de 576,79 kg ha-1 de N: 0,8 K2O e lâmina de agua de 116% ETc, resultando em aumento de 246%. No periodo chuvoso, a menor produtividade foi de 6.815 kg ha-1, com dose de 100 kg ha-1 ano-1 de N: 0,8 K2O, na ausencia da irrigacao. A maior produtividade no mesmo periodo foi de 11.710 kg ha-1, com a dose estimada de 672,9 kg ha-1 ano-1 de N: 0,8 K2O e lâmina de agua aplicada de 120% da ETc, resultando em um aumento de 71,8%. Concluiu-se entao nesse trabalho que a produtividade maxima de materia seca estimada com as equacoes ajustadas foi de 20.216 kg ha-1 ano-1 obtida com lâmina de agua aplicada igual a 949 mm e com a aplicacao de 630 kg ha-1 ano-1 da mistura de nitrogenio e potassio na proporcao de uma unidade de nitrogenio para 0,8 unidades de potassio.","PeriodicalId":38374,"journal":{"name":"Revista Ambiente e Agua","volume":"47 1","pages":"698-706"},"PeriodicalIF":0.0,"publicationDate":"2015-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70665109","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: 4

Metals uptake by live yeast and heat-modified yeast residue 活酵母和热改性酵母渣对金属的吸收

Revista Ambiente e Agua Pub Date : 2015-06-23 DOI: 10.4136/AMBI-AGUA.1577

G. Labuto, Bianca Trama, Geison Castro da Silveira Gueller, Bruna de Souza Guarnieri, F. Silva, Roberta Collazo

{"title":"Metals uptake by live yeast and heat-modified yeast residue","authors":"G. Labuto, Bianca Trama, Geison Castro da Silveira Gueller, Bruna de Souza Guarnieri, F. Silva, Roberta Collazo","doi":"10.4136/AMBI-AGUA.1577","DOIUrl":"https://doi.org/10.4136/AMBI-AGUA.1577","url":null,"abstract":"This study evaluated the biosorption of Cd 2+ , Cr 3+ , Pb 2+ and Cu 2+ at pHs 3, 4, 5 and 6 for Saccharomyces cerevisiae both alive and biologically inactivated by different heating procedures (oven, autoclave or spray dry technique originated from alcohol industry). The material inactivated by autoclave (IA, at 120°C, 30 min) had the best performance for metals uptake: 1.88 ± 0.07 (Cu 2+ ), 2.22 ± 0.02 (Cr 3+ ) and 1.57 ± 0.08 g kg -1 (Pb 2+ ). For Cd 2+ ; while the material inactivated by spray dry (RY) presented the higher sorption capacity, 2.30 ± 0.08 g kg -1 . The sorption studies showed that the biosorbent materials presented different sorption capacities and an ideal sorption pH. The sorption sites were investigated by potentiometric titration and FT-IR and showed that different heating processes used to inactivate biological samples produce materials with different characteristics and with a diverse sorption capacity due to modification of the available sorption sites. This suggests that inactivation by heating can be an alternative to improve the performance of biosorbents. The main sorption sites for each material were phenolic for live yeast (LY) and carboxylic for yeast inactivated by heating in an autoclave (IA).","PeriodicalId":38374,"journal":{"name":"Revista Ambiente e Agua","volume":"10 1","pages":"510-519"},"PeriodicalIF":0.0,"publicationDate":"2015-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70665231","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: 15

Índices para a gestão e planejamento de recursos hídricos na bacia do rio Paraopeba, Estado de Minas Gerais 米纳斯吉拉斯州帕拉奥佩巴河流域水资源管理和规划指标

Revista Ambiente e Agua Pub Date : 2015-06-12 DOI: 10.4136/AMBI-AGUA.1597

B. Silva, D. D. D. Silva, M. C. Moreira

引用次数: 1