Phytotoxicity of effluents from swine slaughterhouses using lettuce and cucumber seeds as bioindicators

Gerber, M.; Lucia, Thomaz; Corrêa, Luciara Bilhalva; Neto, José Eduardo Pereira; Corrêa, Érico Kunde

doi:10.1016/j.scitotenv.2017.03.075

Cited by 45 publications

(9 citation statements)

References 39 publications

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“…The effluents treatment system was efficient to reduce the concentration of some physicochemical parameters to levels within those recommended by the Brazilian legislation, except for P, ammoniacal N and TKN concentration. Although phytotoxicity of the treated effluent was less in comparison to the raw effluent, the GI for cucumber and lettuce seeds submitted to each of the tested effluents was lower than 80% [34].…”

Section: Lepidium Testmentioning

confidence: 82%

“…Our results agree with other studies being conducted on toxicity of industrial effluents using lettuce and other seeds as bioindicators. Gerber et al [34], evaluated the phytotoxic effects of raw and treated effluents from a swine slaughterhouse on cucumber and lettuce seeds and determined correlations among physicochemical characteristics of such effluents and the germination of seeds used as bioindicators. The effluents treatment system was efficient to reduce the concentration of some physicochemical parameters to levels within those recommended by the Brazilian legislation, except for P, ammoniacal N and TKN concentration.…”

Section: Lepidium Testmentioning

confidence: 99%

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Toxicity Assessment of Treated Meat Industry Wastewater in the Anaerobic Process

Kwarciak‐Kozłowska

2017

Eng. Prot. Environ.

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Ocena toksyczności ścieków z przemysłu mięsnego oczyszczonych w procesie beztlenowymMajor pollutant components of meat processing wastewater are biodegradable organic compounds, fats and proteins in both particulate and dissolved forms. Because of the possible pollution of water sources, the efficient disposal of effluent from meat plants is important. The treatment of industrial wastewater is a highly complex process that generally involves factors associated with load fluctuations and high concentrations of organic matter. Toxic effects on aquatic organisms and plants may be caused by numerous nitrogen compounds, as well as detergents and antibiotics, in the meat industry wastewater. The aim of the research was to determine the toxicity of anaerobic treated meat industry wastewaters. The level of toxicity was determined with algae growth inhibition test and Lepidium test. The values of ErC50 (0÷96) and EbC50 of indicators were 18.4 and 8.6% respectively. TU value for ErC50 was 5.51 which meant acute toxicity of wastewater. The value of TU for EbC50 was 11.62 (high toxicity of wastewater). The values of indicators RSG (relative seed germination), RRG (relative root growth) and GI (germination index) were 92, 19.5 and 17.62% respectively. Treatment efficiency meat industry wastewater during fermentation process was very high. The COD and BOD removal efficiency were on 82.3 and 80% respectively. Effluent from ASBR reactor had following parameters: COD -206 mg O2/dm 3 and BOD -130 mg/dm 3 . TOC value after anaerobic process was 75 mg C/dm 3 (78.1%). The concentration of ether extract and proteins were 188 and 74 mg/dm 3 respectively. Generated biogas in the methane fermentation process of wastewater from meat industry plants was characterized by a high methane content (77.5% vol.). Carbon dioxide and the ballast in the analyzed biogas were 20 and 2.5% respectively. In order to enrich biomass with methane by removal of CO2 from its content, the gas generated in the anaerobic process was subjected to the processes of chemisorption and adsorption on the granulated active carbons and molecular sieve. Purification the raw biogas by a molecular sieve has contributed to the increase of methane in enriched from 77.5 to 92.6% and the removal of CO2 from 20 to 5.7%. Due to poor quality and its high toxicity, effluent from ASBR reactor can not to be discharged into natural water. In the future it is suggested to incorporate RO or UF into the technological system in order to posttreatment the wastewater.

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Section: Lepidium Testmentioning

confidence: 82%

Section: Lepidium Testmentioning

confidence: 99%

Toxicity Assessment of Treated Meat Industry Wastewater in the Anaerobic Process

Kwarciak‐Kozłowska

2017

Eng. Prot. Environ.

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“…Para avaliação da fitotoxicidade foram determinados os parâmetros indicadores: germinaçãorelativa das sementes (Equação 1), alongamento relativo das raízes (Equação 2), e o índice de germinação (Equação 3), conforme metodologia de Gerber et al (2017). No estudo, os valores dos parâmetros indicadores superiores a 80% foram considerados como não fitotóxicos (GERBER et al, 2017;MENDES et al, 2016).…”

Section: Notas Técnicasunclassified

“…De forma geral, os resultados obtidos para todos os indicadores de fitotoxicidade, tanto para as sementes de alface (Tabela 2) como para as de pepino (Tabela 3), mantiveram-se acima do 80%, indicando que os efluentes domésticos analisados não possuem efeitos fitotóxicos em nenhuma das etapas de tratamento da estação (GERBER et al, 2017;MENDES et al, 2016 (BARBERA et al, 2014).…”

Section: Análises De Fitotoxicidadeunclassified

Fitotoxicidade em águas residuárias domésticas utilizando sementes como bioindicadores

Guevara¹,

Mello²,

Corrêa³

et al. 2019

RDAE

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Este estudo objetivou verificar a toxicidade de águas residuárias domésticas em diferentes etapas do tratamento por meio de ensaios de fitotoxicidade, utilizando sementes de alface e pepino como bioindicadores. Para isso, avaliaram-se as etapas de uma estação de tratamento de esgoto doméstico mediante amostragens nos pontos: Afluente (esgoto bruto), Efluente do Reator UASB e Efluente (esgoto tratado). As amostras foram submetidas a análises químicas e os bioindicadores ao ensaio de fitotoxicidade. As águas residuárias domésticas nas três etapas de tratamento da estação se caracterizaram como não fitotóxicos para os bioindicadores testados (p<0,05), embora se tenha observado uma diminuição significativa do índice de germinação no efluente tratado para sementes de alface, enquanto que no efluente do reator UASB para sementes de pepino. Foi possível concluir que os efluentes domésticos gerados durante as etapas de tratamento podem ser dispostos no ambiente por não apresentarem riscos potencialmente toxicológicos. Palavras-chave: Efluentes. Índice de Germinação. Fitotoxicidade.

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“…Composting, which was one of the waste treatment processes used in this study, also involves extremely complex biochemical transformations promoted by different soil microorganisms, which may differ in terms of their community compositions depending on the composting method (Inácio and Miller, 2009). Gerber et al (2017) have evaluated the phytotoxicity of untreated and treated effluents from a pig slaughterhouse on cucumber and lettuce seeds and found that, although the phytotoxic effects of the treated effluent were lower in comparison to the raw effluent, the percentage of germination of both plants subjected to each of the effluents was less than 80 %. Thus, both effluents were phytotoxic to the bioindicator plants.…”

Section: Ricementioning

confidence: 99%

Ecotoxicology of Pig Slaughterhouse Waste Using Lactuca sativa L., Raphanus sativus L., and Oryza sativa L.

Ramires¹,

Souza

Fontanive

et al. 2019

Rev. Bras. Ciênc. Solo

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Pork is the most consumed animal protein around the world. The production levels are significant, which results in the generation of large amounts of slaughter waste. Such waste is often disposed of improperly in agricultural areas, causing environmental imbalance by the contamination of soil and water sources with metals and pathogenic organisms. This study evaluates the phytotoxic effects of pig slaughterhouse waste in natura and after stabilization processes on lettuce (Lactuca sativa Linnaeus, 1753), radish (Raphanus sativus Linnaeus, 1753), and rice (Oryza sativa Linnaeus, 1753), in addition to shoot nutrient contents. To do this, the waste was evaluated through phytotoxicity tests on lettuce, radish, and rice plants in natura (PSWin) as well as after aerated composting (PSWa), natural composting (PSWn), and vermicomposting (PSWv). The evaluations were done through germination, root length, plant development, and shoot nutrient analysis. We found that PSWin and PSWa negatively affected germination, root length, and plant development. Shoot nutrient contents varied greatly among treatments, some of which were above, below, or within the recommended limits. Based on these results, we infer that pig slaughterhouse waste in natura and after aerated composting is phototoxic to lettuce, radish, and rice plants. Phosphorus and sulfur exhibited contents above those recommended in all the treatments for lettuce, radish, and rice. On the other hand, potassium and calcium contents were below the recommended thresholds.

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Phytotoxicity of effluents from swine slaughterhouses using lettuce and cucumber seeds as bioindicators

Cited by 45 publications

References 39 publications

Toxicity Assessment of Treated Meat Industry Wastewater in the Anaerobic Process

Toxicity Assessment of Treated Meat Industry Wastewater in the Anaerobic Process

Fitotoxicidade em águas residuárias domésticas utilizando sementes como bioindicadores

Ecotoxicology of Pig Slaughterhouse Waste Using Lactuca sativa L., Raphanus sativus L., and Oryza sativa L.

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