BIOSORCIÓN DE Pb (II) DE AGUAS RESIDUALES DE MINA USANDO EL MARLO DE MAÍZ (Zea mays)

Jiménez, Franklin Oré; Meza, Carmencita Lavado; Montes, Salvador Bendezú

doi:10.37761/rsqp.v81i2.20

Cited by 7 publications

(11 citation statements)

References 8 publications

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“…Heavy metals are pollutants released into the environment and are highly available as a result of increased anthropogenic activities, such as industrial, mining, and agricultural activities [1]. There is currently a worldwide concern about the significant increase in pollution rates from the improper release and treatment of heavy metal industrial effluents.…”

Section: Introductionmentioning

confidence: 99%

Kinetics and bioadsortion equilibrium of lead and cadmium in batch systems with cocoa shell (Theobroma Cacao L.)

Tejada-Tovar¹,

Lopez-Cantillo²,

Vidales-Hernandez³

et al. 2018

ces

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Residual biomass waste is used as an efficient and low-cost means of removing heavy metals (nickel, cobalt, chromium, lead, mercury, arsenic, among others) from wastewater, so it is important to evaluate the potential of cocoa shell waste (Theobroma cacao L.), with three particle sizes (0.35, 0.5 and 1 mm), as an adsorber of cadmium ions and lead in aqueous solution (100 ppm) in a batch system, that was the objective of this research. It was hypothesized that the smaller the particle size, the higher the percentage of removal of cadmium and lead ions. A factorial experimental design with three levels of variation and two study factors (particle size and initial metal concentration) was implemented, carrying out 9 experiments per metal, for a total of 18. Plant segments were washed and dried, then adsorption was determined. The process of removal of Cd (II) and Pb (II) ions was favored by particles of 0.35 mm, with which the maximum percentage (95 and 86%) of removal of Cd and Pb was obtained. The kinetic model that best fitted the experimental adsorption data was Elovich and the isothermal model that best described the results was that proposed by Freundlich. It is concluded from the results obtained in this study that cocoa shells 1112 Candelaria Tejada-Tovar et al.have great potential for removal of Cd and Pb in aqueous solutions in a satisfactory manner.

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Section: Introductionmentioning

confidence: 99%

Kinetics and bioadsortion equilibrium of lead and cadmium in batch systems with cocoa shell (Theobroma Cacao L.)

Tejada-Tovar¹,

Lopez-Cantillo²,

Vidales-Hernandez³

et al. 2018

ces

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“…Esta señal tiende a disminuir, al modificar con NaOH y se incrementa levemente modificando con C 6 H 8 O 7 [27]. La banda a 1,622 cm -1 es característica de la presencia de lignina y corresponde al estiramiento asimétrico del doble enlace del grupo carboxilo (-COOH), la cual evidencia un incremento en la señal luego de las modificaciones con NaOH y C 6 H 8 O 7 a 1,640 cm -1 y 1,636 cm -1 cuyo comportamiento se asocia principalmente a las vibraciones de flexión del agua absorbida por la celulosa [28].…”

Section: Análisis Del Marlo De Maíz Después De La Filtración De Damunclassified

“…La banda a 1,241 cm -1 corresponde a la vibración de tensión y flexión en el plano del grupo de los ésteres, cuya intensidad de señal disminuye en ambos casos de modificación e indica que los grupos hidroxilo (-OH) y carboxilo (-COOH) están involucrados en la incorporación del modificante en el marlo [29,30]. Finalmente, las bandas que se observan a aproximadamente 1,035 cm -1 se atribuye a la presencia de anhídridos en el marlo, esta señal disminuye con C 6 H 8 O 7 como consecuencia de la formación de citratos de almidón durante el proceso de modificación [28].…”

Section: Análisis Del Marlo De Maíz Después De La Filtración De Damunclassified

Desempeño de reactores empacados con marlo de maíz (Zea mays) en la remoción de hierro contenido en drenajes ácidos de mina

Hernández-Botia

Vásquez-Ochoa²,

Roldan-García

et al. 2020

Cienc. En Desarro.

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Se evaluó la capacidad del marlo de maíz (Zea mays) para remover hierro contenido en drenajes ácidos de mina (DAM) de carbón, en reactores de lecho empacado, a escala laboratorio. Los ensayos tuvieron una fase de filtrado de efluente, a través del lecho, a un caudal de 5 mL×min-1 y un lavado de columna, con agua destilada, a fin de remover lo débilmente retenido por la biomasa. Las variables evaluadas fueron: (i) modificación del marlo con hidróxido de sodio (NaOH) o ácido cítrico (C₆H₈O₇) y (ii) concentración de hierro en el DAM de 500 ppm, 1,000 ppm y 2,000 ppm. Simultáneamente, se hicieron ensayos, bajo las mismas condiciones, pero, con lavados de agua destilada al marlo, cada 400 mL de DAM filtrado, con el fin de evitar la saturación del sistema. El efluente tratado se monitoreó mediante mediciones de pH y hierro (espectroscopia de absorción atómica). Las biomasas se caracterizaron fisicoquímicamente, al iniciar y al finalizar el proceso, mediante espectroscopia infrarroja con transformada de Fourier (FTIR). En general, el pH del DAM jugó un papel muy importante en la capacidad de remoción del metal y se obtuvo mejores porcentajes de remoción de hierro utilizando marlo modificado con NaOH, incluyendo lavados esporádicos durante el proceso.

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“…It should be mentioned that the desorption process is important since the lignocellulosic material used as a sorbent could be reusable and incorporated again into the removal cycle [22,23]. Additionally, 4% HCl, NaOH 0.1 N, HNO 3 0.05-0.3 M [24,25], Ca(NO 3 ) 2 10 mM [26], EDTA 0.001-0.1 M and HCl 0.1-1 M [22] have been used to perform Pb desorption using sorbents such as corn husk, coffee pulp and grape pulp respectively.…”

Section: Introductionmentioning

confidence: 99%

Biosorption of Pb(II) Using Coffee Pulp as a Sustainable Alternative for Wastewater Treatment

et al. 2021

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The present research shows the results obtained from the biosorption process of Pb, using coffee pulp as a biosorbent in synthetic waters. To do this, the lignin and cellulose content and the percentage of removal of Pb2+ ions was determined; additionally, the sorption’s optimal variables, such as the optimum pH, the point of zero charge (pHpzc), the kinetics and the adsorption isotherm, were determined. A comparison was made with other by-products derived from coffee crops. According to the results obtained in this research, the cellulose percentage was 29.12 ± 0.22% and the lignin percentage was 19.25 ± 0.16% in the coffee pulp, the optimum pH was 2.0 units and the kinetic model, which adjusted to the biosorption’s process, was the pseudo-second order of Ho and McKay, presenting an isotherm of Langmuir’s model and pHpzc of 3.95 units. Lastly, the removal of the pollutant was 86.45%, with a capacity of maximum adsorption of 24.10 mg·g−1 obtained with a particle size of 180 µm, time of contact of 105 min and at 100 RPM. Finally, we express that (a) the coffee pulp can be used as a sustainable alternative for the removal of the pollutant mentioned in synthetic and/or industrial wastewater matrices, to meet goals 3.9 and 6.9 of the Sustainable Development Goals of the 2030 agenda, and (b) the novelty of this research is the use of an agricultural waste of easy acquisition as a sorbent, without chemical modification, since it presented a high percentage of efficiency in the removal of Pb2+ ions. In turn, the challenge of this research is implementing this green technology on a pilot, semi-industrial and/or industrial scale in wastewater treatment systems.

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BIOSORCIÓN DE Pb (II) DE AGUAS RESIDUALES DE MINA USANDO EL MARLO DE MAÍZ (Zea mays)

Cited by 7 publications

References 8 publications

Kinetics and bioadsortion equilibrium of lead and cadmium in batch systems with cocoa shell (Theobroma Cacao L.)

Kinetics and bioadsortion equilibrium of lead and cadmium in batch systems with cocoa shell (Theobroma Cacao L.)

Desempeño de reactores empacados con marlo de maíz (Zea mays) en la remoción de hierro contenido en drenajes ácidos de mina

Biosorption of Pb(II) Using Coffee Pulp as a Sustainable Alternative for Wastewater Treatment

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