&lt;b&gt;Efficiency and operating cost of electrocoagulation system applied to the treatment of dairy industry wastewater

Geraldino, Henrique César Lopes; Simionato, Julliana Izabelle; Freitas, Thábata Karoliny Formicoli de Souza; Garcia, Jocilaine; Júnior, Orlando de Carvalho; Correr, Caryna Januario

doi:10.4025/actascitechnol.v37i3.26452

Cited by 24 publications

(15 citation statements)

References 12 publications

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“…Quando analisado o pH das diferentes indústrias de laticínios (Tabela 1), é possível observar sua variação entre 3,3 e 7,5 (RIVAS et al, 2010;CHEN & LIU, 2012;SIRIANUNTAPIBOON et al, 2005;SARKAR et al, 2006;ABREU et al, 2013;GERALDINO et al, 2015;PORWAL et al, 2015). Para esse parâmetro, são vários regulamentos e normativas que determinam limites.…”

Section: Resultados E Discussõesunclassified

“…Processos de eletrocoagulação também foram empregados e as taxas de remoção alcançadas foram de 99,98% para a turbidez, 94,90% para a cor, e 96,36% para a DQO. E quando empregado o processo de oxidação fotocatalítica (UV/H 2 O 2 /ZnO), a remoção alcançada foi de 100% para o parâmetro coliformes termotolerantes (GERALDINO et al, 2015).…”

Section: Usos Finaisunclassified

“…, 2008). Os efluentes submetidos ao processo de coagulação, adsorção, separação por membrana e osmose reversa e eletrocoagulação alcançaram remoção de 100%, ou aproximadamente, da turbidez (SARKAR et al, 2006;GERALDINO et al, 2015), atendendo aos regulamentos de Nova Gales do Sul (NGS) (AUSTRÁLIA, 2008) e do Brasil (ABNT, 1997), além do espanhol (Real Decreto nº 1.620 - ESPANHA, 2007). Por outro lado, os tratamentos empregados por Rivas et al (2010) e Bernal et al (2008) BR 1: limite requerido pela norma brasileira para fins de descarga em vasos sanitários; BR 2: limite recomendado pela norma brasileira para lavagem de carros e outras práticas com contato direto com o usuário; BR 3: limite indicado pela normativa brasileira para lavagem de pisos e calçadas, irrigação dos jardins, manutenção dos lagos e canais paisagísticos; NGS 2: limite preconizado pela normativa australiana para utilização em áreas de contato não alimentar; NGS 1: limite preconizado pela normativa australiana para utilização em áreas de contato não alimentar; ESP 2: limite preconizado pela normativa espanhola para reúso em torres de resfriamento e condensadores.…”

Section: Potencial De Aproveitamento Industrial De Efluentes Provenieunclassified

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Potencial de utilização de efluentes tratados de laticínios

Fernandes

Naval

2017

Rev. Bras. Ciênc. Ambient. (Online)

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A utilização de águas de reúso nas indústrias vem se tornando uma opção viável para reduzir o lançamento de efluentes em cursos d'água, bem como a poluição hídrica gerada por esse setor. Considerando a importância dessa ação, este estudo objetivou avaliar o potencial de utilização de efluentes tratados provenientes de laticínios. Para tanto foram comparadas as características de efluentes produzidos em laticínios, em termos de potencial hidrogeniônico (pH), demanda bioquímica de oxigênio (DBO 5), sólidos suspensos totais (SST), turbidez e coliformes termotolerantes, após serem submetidos a tratamentos, com os requisitos de qualidade presentes em normativas e resoluções nacionais e internacionais para o reúso industrial. A análise dos dados possibilitou verificar que entre os sistemas de tratamentos estudados a coagulação-floculação e biodegradação aeróbia; a coagulação, adsorção, separação por membrana e osmose reversa; o lodo ativado; a eletrocoagulação; e o biorreator por membrana e oxidação fotocatalítica (UV/H 2 O 2 /ZnO) permitiriam levar os efluentes à qualidade desejada para os parâmetros estudados, podendo esses estarem combinados ou não. Palavras-chave: aproveitamento de efluentes; indústria de laticínios; tratamentos.

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Section: Resultados E Discussõesunclassified

Section: Usos Finaisunclassified

Section: Potencial De Aproveitamento Industrial De Efluentes Provenieunclassified

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Potencial de utilização de efluentes tratados de laticínios

Fernandes

Naval

2017

Rev. Bras. Ciênc. Ambient. (Online)

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“…On the basis of these results, it is recommended that a second order kinetics model be used to describe the TSS removal from the anaerobically-pretreated palm POME for the applied voltages of 10, 15 and 20 V. The models can be written as Eqs. (10), (11), and (12). Figure 12 shows the graphical presentation of second-order kinetics models of TSS removal.…”

Section: Ec Kinetic Modelmentioning

confidence: 99%

Improving the Quality of Anaerobically-Pretreated Palm Oil Mill Effluent Using Electrocoagulation

Sailah¹

2021

J. Ecol. Eng.

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The palm oil extraction process generates large amounts of effluents with very high concentrations of pollutants, even though they are subjected to anaerobic pretreatment. Further treatment is needed in order to ensure that the effluent is safe for disposal or reuse. This work was conducted to evaluate the performance of an electrocoagulation process in removing pollutants from the anaerobically-pretreated palm oil mill effluent. A 1000 ml beaker glass equipped with a magnetic stirrer was used as an electrocoagulation reactor with four plates of aluminum electrode @ 12×2 cm and an effective area of 0.1 m 2 arranged in a bipolar configuration. The experiments run in a batch mode were carried out at various voltage levels and contact times, namely 10, 15, and 20 V for 15, 30, 45 and 60 min. The level of pollutant removal and electrical energy consumption were determined. The electrocoagulation process at 15 V for 30 min produced the highest level of pollutant removal for TSS, turbidity, color, COD, and BOD 5 , i.e. 90%, 86%, 93%, 87%, and 97%, respectively. The estimated operating costs for these process conditions are 1.48 USD/m 3. A second order empirical model was developed to describe the TSS removal in the POME electrocoagulation process. The electrocoagulation with aluminum electrodes can significantly reduce various types of pollutants of anaerobically-pretreated POME, such as TSS, turbidity, color, COD, and BOD 5. The estimated cost of EC operation is cheaper than the chemical coagulation process.

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“…In addition, there were some factors in both processes that should be considered such as labor, maintenance, sludge dewatering and disposal as well as fixed costs. The calculations of electrode wear [28], electric energy consumption, and operating cost were calculated by using the following Eq. 5 Table 2 shows the concentrations of COD and heavy metal (Pb and Cr) in the wastewater after 1 h of electrocoagulation process.…”

Section: Chlorophyll Analysismentioning

confidence: 99%

Batik Wastewater Treatment Using Simultaneous Process of Electrocoagulation and Electro-Assisted Phytoremediation (EAPR)

2020

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The aims of the study are to identify the effectiveness of wastewater treatment from the Batik industry using a simultaneous of electrocoagulation (EC) and electro-assisted phytoremediation (EAPR). Rough horsetail (Equisetum hyemale) was used as an accumulator plant in the EAPR system. Electrocoagulation was conducted for 1 h at a constant voltage of 20 V in 10 L solution, while EAPR was processed for 7 day at a constant voltage of 5 V in 17 L solution. The chemical oxygen demand (COD) of water was determined by closed reflux of colorimetric methods and heavy metal concentration was determined by flame-atomic absorption spectrophotometer. The results showed that the COD decreased by 69.6% after 1 h of electrocoagulation process and up to 80.9% after the EAPR process. The concentration of Cr and Pb decreased as much as 25% and 8.52%, respectively in the similar process. The simultaneous process could extend the heavy metal removal up to 0.28 mg/L for Cr and 0.09 mg/L for Pb in liquid wastewater from the initial concentration. These results showed that the levels of COD and heavy metal concentration in Batik wastewater have reduced in accordance with the Ministry of Environment Decree No. 5/2014 Republic of Indonesia regarding various industries wastewater standard with the threshold limit of 150 mg/L for COD and 1.0 mg/L for Cr on textile industry and 0.1 mg/L for Pb on Class I for another wastewater standard. The estimated cost of operation was US$ 1.509 m–3 indicating the viability of Batik industry wastewater treatment.

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<b>Efficiency and operating cost of electrocoagulation system applied to the treatment of dairy industry wastewater

Cited by 24 publications

References 12 publications

Potencial de utilização de efluentes tratados de laticínios

Potencial de utilização de efluentes tratados de laticínios

Improving the Quality of Anaerobically-Pretreated Palm Oil Mill Effluent Using Electrocoagulation

Batik Wastewater Treatment Using Simultaneous Process of Electrocoagulation and Electro-Assisted Phytoremediation (EAPR)

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