Bioremediation of Waters Contaminated with Heavy Metals Using Moringa oleifera Seeds as Biosorbent

Araújo, Cleide Sandra Tavares; Carvalho, Dayene C.; Rezende, Hélen C.; Almeida, Ione Lucenir Silva; Coelho, Luciana Melo; Coelho, Nívia M. M.; Marques, Thiago L.; Alves, Vanessa N.

doi:10.5772/56157

Cited by 61 publications

(54 citation statements)

References 63 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…La biorremediación ha sido exitosamente usada en muchos campos relacionados con la descontaminación, incluyendo pesticidas (Naofumi, 2013), aguas residuales complejas (Gaikwad, Wate, Ramteke & Roychoudhury, 2014), aguas del molino de olivas usando levaduras (Bevilacqua, Petruzzi, Corbo & Sinigaglia, 2013), aguas contaminadas con metales pesados usando semillas de Moringa Oleifera, (Araújo, Carvalho, Rezende, Almeida, Coelho, Marques, & Alves, 2013), remoción de cromo hexavalente de soluciones y sitios contaminados usando diferentes biomasas naturales (Acosta-Rodrí-guez, Cárdenas-González, Moctezuma-Zárate y Martínez- Juárez, 2013), así como nutrientes y materia orgánica, entre otros (Lavrova and Koumanova, 2013). Uno de los más recientes intereses en la ciencia tiene relación con la biología molecular, en particular la ingeniería genética, como herramienta para estudiar los mecanismos envueltos en la regulación de las transformaciones hacia cierta mineralización que se desea lograr (Ranjith y Pratap, 2013).…”

Section: Marco Teóricounclassified

Descontaminación de aguas y lodos usando enzimas y bacterias: evaluación de tres productos biorremediadores parte 1: uso de procesos aerobios

Romero

Salazar

2017

Alternativas

View full text Add to dashboard Cite

RESUMENEsta primera parte de la investigación evaluó tres productos comerciales constituidos por enzimas y bacterias que --conforme protocolos de aplicación, ensayos y parámetros de calidad, especificados y llevados a cabo bajo la guía de las compañías oferentes--lograrían descontaminar, aplicando procesos aerobios, aguas y lodos de un sitio donde se descargan aguas lluvias y residuales, domésticas e industriales crudas. Se usaron cuatro reactores de cuarenta litros cada uno, donde se colocó igual cantidad de lodos y agua contaminada procedente de la misma fuente, para analizar si habría mejoras en su calidad ambiental. Todos los reactores arrancaron bajo las mismas condiciones y las dosificaciones de los biorremediadores la realizaron los oferentes conforme sus propios protocolos. Un reactor se usó como testigo, donde no se añadió producto alguno. Los otros tres sirvieron para evaluar separadamente cada uno de los productos comerciales mencionados. Se efectuaron separadamente análisis de la calidad ambiental inicial de sus lodos y agua, y luego cada diez días a lo largo de cincuenta días, comparando los resultados entre el testigo y los reactores donde se añadieron los productos comerciales. El reactor testigo produjo mejores resultados. Dos de los tres productos comerciales no cumplieron lo ofrecido por sus oferentes e inclusive deterioraron más la calidad ambiental del agua y lodos. Sólo uno de los productos comerciales arrojó resultados algo similares al del reactor testigo; sin embargo, al comparar entre ambos los ensayos de olores de los lodos contaminados del fondo, se encontró que el testigo presentaba menor mal olor. ABSTRACTThis first part of this research evaluated three commercial products containing enzymes and bacteria which --according to protocols of their use, applications, essays, and quality parameters specified and performed under the guidance of the offering companies--would decontaminate, using aerobic processes, water and sludge polluted with domestic and industrial residues. Four reactors, 40-liter each, were used with the same amount of polluted sludge and water, obtained from the same source, to analyze if there was any improvement in environmental quality. All reactors started under the same conditions and the bioremediation products were applied as stated according to the commercial firms' established protocols. One reactor was used as a control with no bioremediation product in it. The other three reactors were evaluated separately with the previously mentioned commercial products. The initial environmental quality for the water and sludge was evaluated; then samples were withdrawn and analyzed each ten days throughout fifty days and the results were compared between the control and the reactors with the added commercial products. The control reactor gave the best results. Two of the three commercial products could not comply with what was stated by the offering firms and even deteriorated more the environmental quality of the water and the sludge. Only one of the commercial product...

show abstract

Section: Marco Teóricounclassified

Descontaminación de aguas y lodos usando enzimas y bacterias: evaluación de tres productos biorremediadores parte 1: uso de procesos aerobios

Romero

Salazar

2017

Alternativas

View full text Add to dashboard Cite

show abstract

“…The peaks at 2925 cm -1 can be assigned to asymmetric CH 2 group vibration of lipid moiety. The peak located at 1750 cm -1 is a characteristic of carbonyl group of aldehydes, ketones, carboxylic acids, esters or amides [29]. The peaks at 1635 cm -1 indicate the presence of a -C=C bond.…”

Section: Kinetic Model Linear Equation Parametersmentioning

confidence: 99%

Biosorption of lead (II) from an aqueous solution using biosorbents prepared from water plants

Enkhdul

Lin

et al. 2018

Mong. J. Chem.

View full text Add to dashboard Cite

Due to its toxicity causing serious health problems, persistence in the environment and non-biodegradability, lead (Pb) is considered as one of the most harmful metals on earth. In this study, dried aquatic plants as sorbents including Nymphoides peltata (NP), Typha laxmannii (TL), and Eichhornia crassipes (EC) were examined and compared to discover the best biosorption for Pb. The effect of physical and chemical parameters including pH (2.0-5.5), sorbent dosage (1-5 g/l), metal concentration (20-100 mg/l), and contact time (~240 min) were investigated to determine the optimal condition for Pb(II) biosorption. As a result, the optimum pH, sorbent dosage, and contact time were 5.0, 1 g/l, and 120 minutes, respectively. Pb 2+ biosorption data were found to follow the Langmuir isotherm model while the kinetic biosorption data followed pseudosecond-order model. The maximum biosorption capacity from Langmuir model was calculated as 63.3, 82.9, and 51.9 mg/g for EC, NP, and TL, respectively. All the results showed that biosorption efficiencies of Pb(II) by different biosorbents were in following order NP>EC>TL.

show abstract

“…This process is a very efficient one, bringing water polluted with heavy metals with a concentration of 1-100 mg·l -1 to the quality of drinking water with a contraction of heavy metal ions of 0.01-0.1 mg·l -1 [1].…”

Section: Introductionmentioning

confidence: 99%

“…Bioremediation is a modern method based on the ability of certain organisms to turn pollutants into less dangerous or, ideally, non-hazardous factors, without making substantial changes in the equilibrium of the ecosystem. It is based on the ability of some chemicals to be biodegraded [1].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Study on use of Typha angustifolia L. in wastewater treatment: promising method in removal of copper ions present in aquatic solution

Cristescu

Covaliu

Popa

et al. 2018

Engineering for Rural Development

View full text Add to dashboard Cite

Abstract. Water pollution is an increasingly troublesome problem, water being a precious, renewable, but limited resource, and an essential factor in maintaining life on the earth. With the increasing population number, the strong and uncontrolled industrialization, and the aggressive behaviour of the population, relative to environmental protection, more and more toxic residues and substances have been released into the environment, jeopardizing its balance. The treatment of water contaminated with heavy metal ions is a real challenge, due to the fact that the costs of applying the current treatment technologies are very high, with low efficiency. Due to the high toxicity of heavy metals, the serious effects they have on the abiotic factor, but also the toxic effects and illnesses they cause to living organisms, researchers have focused their attention on the implementation of new effective solutions in order to eliminate these toxic pollutants. This paper aims to highlight a less conventional method used for treating water contaminated with heavy metal ions. The process is based on the ability of the Typha angustifolia L. to metabolize the heavy metal ions present in the water, and it also has the advantage of recovering the metal from the plant, at the end of its growth process. The paper wanted to highlight an efficient method, which implementation and functioning does not harm the environment. Taking into account the promising results of the experiments and the low costs involved in using this method of treating wastewater contaminated with heavy metal, it is desirable to implement it or to use it on a large scale. Studies will also be continued within a research project from the National Research Plan, in order to observe the plant's effectiveness in adsorbing other types of heavy metals.

show abstract

Bioremediation of Waters Contaminated with Heavy Metals Using Moringa oleifera Seeds as Biosorbent

Cited by 61 publications

References 63 publications

Descontaminación de aguas y lodos usando enzimas y bacterias: evaluación de tres productos biorremediadores parte 1: uso de procesos aerobios

Descontaminación de aguas y lodos usando enzimas y bacterias: evaluación de tres productos biorremediadores parte 1: uso de procesos aerobios

Biosorption of lead (II) from an aqueous solution using biosorbents prepared from water plants

Study on use of Typha angustifolia L. in wastewater treatment: promising method in removal of copper ions present in aquatic solution

Contact Info

Product

Resources

About