Evaluation of the efficiency of natural coagulant obtained by ultrafiltration of common bean seed extract in water turbidity removal

Antov, Mirjana G.; Šćiban, Marina; Prodanović, Jelena M.

doi:10.1016/j.ecoleng.2012.08.015

Cited by 72 publications

(27 citation statements)

References 20 publications

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“…Moreover, various concentrations of the CEs (1-125 lg/ml protein) were tested for coagulation activity and approximately 20-30 lg/ml protein showed the highest activity (data not shown). There are other plant materials such as Jatropa curcus and Phaseolus vulgaris that possess coagulation activity have been reported and are considered to be a potential water treatment agent (Abidin et al 2013;Antov et al 2010Antov et al , 2012. However, the coagulation activity varies between the types of seed material used, extraction methods, initial turbidity of water, mixing, suspended particles, and ions present in the water samples (Okuda et al 2001;Ghebremichael et al 2005;Marobhe et al 2007a;Abidin et al 2013).…”

Section: Coagulation Activity Of Seed Extractsmentioning

confidence: 99%

Coagulant proteins identified in Mustard: a potential water treatment agent

Bodlund

Pavankumar

Chelliah

et al. 2013

Int. J. Environ. Sci. Technol.

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The use of natural coagulant protein in drinking water treatment has been discussed for a long time, though the method is still not in practice, probably due to limited knowledge and availability of material. In the present work, different Mustard varieties were tested for the presence of coagulant protein compared with Moringa seed extract and their potential application in water treatment. The coagulation activity of the protein extract was measured using synthetic clay solution as well as water from pond. The protein content was determined by Bradford method, molecular mass determined by Sodium dodecyl sulfate-polyacrylamide gel electrophoresis, and peptide sequence was analyzed by Mass spectrometry. Extract of Mustard (large) and Moringa seed showed coagulation activity of %70 and %85 % after 90 min, respectively. Interestingly, seed extracts from other Mustard varieties had coagulation activity after heat activation at 95°C for 5 h. However, the coagulation activity of Mustard seed extract against turbid pond water was higher (%60 %) compared to Moringa seed extract (%50 %). The peptide sequence analysis of 6.5 and 9 kDa proteins was found to be homologous to Moringa coagulant protein and napin3, respectively. To our knowledge, this could be the first report on Mustard seed having coagulant protein. The coagulation activity of Mustard (large) against highly turbid pond water suggested that it could be a potential natural coagulant for water treatment.

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Section: Coagulation Activity Of Seed Extractsmentioning

confidence: 99%

Coagulant proteins identified in Mustard: a potential water treatment agent

Bodlund

Pavankumar

Chelliah

et al. 2013

Int. J. Environ. Sci. Technol.

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“…Para os outros extratos o menor percentual de clarificação foi para Phaseolus vulgaris atingindo 72,8 % de clarificação. Antov et al (2012), obtiveram um percentual próximo a 50 % de clarificação, utilizando parâmetros de agitação rápida de 200 rpm por 1 minuto e agitação lenta de 60 rpm por 30 minutos, para extrato de semente de feijão como coagulante.…”

Section: Influências Das Velocidades De Agitação Rápida E Lenta Na Reunclassified

EXTRATO DE ACÁCIA NEGRA (Acacia mearnsii de Wild.) NO TRATAMENTO DE EFLUENTES EMULSIONADOS: ESTUDO DAS CONCENTRAÇÕES E PARÂMETROS OPERACIONAIS

Morandin¹,

Kempka²

2018

Engevista

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Todos as informações e direitos sobre o presente artigo são de total e única responsabilidade do(s) autor(es). Resumo: O extrato de Acácia Negra vem sendo caracterizado como uma grande fonte de taninos e devido ao seu alto poder de clarificação é apontado como um agente coagulante no tratamento primário de efluentes industriais. Um grande problema das indústrias de extração de óleos comestíveis é a geração de efluentes oleosos, com emulsões estáveis óleo-água, que devem ser tratados antes de serem descartados, a fim de reduzir seus impactos ambientais. O objetivo deste estudo foi avaliar a eficiência de extrato de Acácia Negra como agente coagulante na desestabilização de emulsões sintéticas, com 3 g/L e 6 g/L de óleo de soja ou óleo de girassol, chamadas efluentes emulsionados. Foram estudadas as concentrações do coagulante e os parâmetros de agitação do processo de coagulação, utilizando a metodologia de superfície de resposta. Para os efluentes com óleo de soja os maiores percentuais de remoção de turbidez foram de 61 % e 53 %, para os efluentes com 3 g/L e 6 g/L, respectivamente, utilizando-se 0,5 % (v/v) de extrato de Acácia Negra. Para os efluentes com óleo de girassol, os percentuais de remoção de turbidez foram de 42 % e 45 % com uso de 0,5 % (v/v) de Extrato de Acácia Negra, para os efluentes emulsionados com 3 g/L e 6 g/L, respectivamente. As condições de agitação otimizadas foram as mesmas para os efluentes, sendo a velocidade de agitação rápida de 150 rpm (por 1 minuto) e a velocidade de agitação lenta de 100 rpm (por 20 minutos). Todos as informações e direitos sobre o presente artigo são de total e única responsabilidade do(s) autor(es). Extrato de acácia negra (Acacia Abstract:The Black Acacia extract is being characterized as a major source of tannins and due to its high power of clarification, is appointed as a coagulant agent in the primary treatment of industrial effluents. A major problem of edible oil extraction industry is the generation of oily wastewater, with stable oil-water emulsions, which must be treated before disposal in order to reduce their environmental impact. The objective of this study was to evaluate the extract of Black Acacia efficiency as coagulating agent in the destabilization of synthetic emulsions, with 3 g/L and 6 g/L soybean oil or sunflower oil, termed emulsified effluent. The concentration of the coagulant and the agitation parameters of the coagulation process was studied by using the response surface methodology. For effluent of soybean oil, the turbidity removal percentage it was 61 % and 53 % for emulsions with 3 g/L and 6 g/L, respectively, using 0.5 % (v/v) of extract of Black Acacia. For effluents with sunflower oil, the turbidity removal percentages were 42 % and 45 % with the use of 0.5 % (v/v) extract Black Acacia, for the emulsified effluent with 3 g/L and 6 g/L, respectively. The optimal stirring conditions were the same for all effluents, with rapid stirring speed of 150 rpm (for 1 minute) and slow stirring speed of 100 rpm (for 20 minutes).

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“…Although there are new techniques for water and wastewater treatment, however, coagulation/flocculation step is an essential process in the treatment of surface water at which includes removal of turbidity from water, the use of natural coagulants, aiming at a better quality of treated water by reducing the use of chemicals [1].…”

Section: Introductionmentioning

confidence: 99%

Effectiveness of Using Natural Materials as a Coagulant for Reduction of Water Turbidity in Water Treatment

Janna¹

2016

WJET

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Coagulation-Flocculation plays a significant role in drinking water treatment. Laboratory experiments were carried out in order to assess the effectiveness of using Conocarpus Leaves Solution (CLS) as a natural coagulant in conjunction with the synthetic chemical represented by Alum in the water purification. Biological test was carried out to confirm that these leaves are not toxic, followed by optimizing the dosage of alum and then Alum and CLS were applied to the turbid water whose turbidity level has two ranges, (20 -35) NTU and (90 -120) NTU, using the JAR Test. The parameters determined before and after coagulation were turbidity, pH and temperature. The experiments showed that the optimum dose of alum coagulant (individually) for high turbid water is about 18 mg/l with PH = 7 and 24 mg/l f with PH = 5 and 9. In addition, for the low turbidity water, the optimum dose of alum was lower than in the high turbid water. In terms of using Alum in conjunction with CLS, at high range of turbidity, the results show that at 33% ratio of leaves solution to alum coagulant, there are 50% and 75% turbidity reduction performed for the PH equal to 5 and 9 respectively. Although about 62% and 65% turbidity reduction were achieved at PH = 7 and PH = 9 in the low range level. However, low reduction in turbidity has occurred when the water PH = 5. The amount of leaves solution added to the water in the water treatment plant is highly important, hence it decreases the amount of using the synthetic chemicals by about 33% of the quantity that required for water treatment and that will help both, the water industry and the human health. More studies need to be achieved in particular different concentration of the Conocarpus leaves solution in order to improve the percentage of using the natural material as a coagulant.

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Evaluation of the efficiency of natural coagulant obtained by ultrafiltration of common bean seed extract in water turbidity removal

Cited by 72 publications

References 20 publications

Coagulant proteins identified in Mustard: a potential water treatment agent

Coagulant proteins identified in Mustard: a potential water treatment agent

EXTRATO DE ACÁCIA NEGRA (Acacia mearnsii de Wild.) NO TRATAMENTO DE EFLUENTES EMULSIONADOS: ESTUDO DAS CONCENTRAÇÕES E PARÂMETROS OPERACIONAIS

Effectiveness of Using Natural Materials as a Coagulant for Reduction of Water Turbidity in Water Treatment

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