CYCLIC BIOSORPTION AND DESORPTION OF ACID RED 27 ONTO Eichhornia crassipes LEAVES

Ramírez-Rodríguez, Allan Eduardo; Reyes-Ledezma, Jessica Lizeth; Chávez-Camarillo, Griselda Ma.; Cristiani‐Urbina, Eliseo; Morales-Barrera, Liliana

doi:10.24275/uam/izt/dcbi/revmexingquim/2018v17n3/ramirez

Cited by 13 publications

(5 citation statements)

References 17 publications

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“…Considering the indispensable requirement of recyclability for the practical application of a biosorbent, an evaluation of the cycles of biosorption/desorption is necessary to assure that the material can be regenerated in a cost-effective manner [23]. Additionally, insights are provided as to the best way to dispose of the biosorbent once it is no longer useful.…”

Section: Biosorption-desorption Cyclesmentioning

confidence: 99%

Biosorption of Co2+ Ions from Aqueous Solution by K2HPO4-Pretreated Duckweed Lemna gibba

2020

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The wastewater of the many industries that use divalent cobalt (Co2+)-containing compounds has elevated levels of this metal. Thus, novel technology is needed to efficiently remove Co2+ ions from aqueous solutions. Biosorption is a low-cost technique capable of removing heavy metals from contaminated water. This study aims to evaluate the performance of KH2PO4-pretreated Lemna gibba (PLEM) as a biosorbent of Co2+ in aqueous solutions tested under different conditions of pH, particle size, and initial Co2+ concentration. Kinetic, equilibrium, and thermodynamic studies were conducted. The capacity of biosorption increased with a greater initial Co2+ concentration and was optimal at pH 7.0 and with small-sized biosorbent particles (0.3–0.8 mm). The pseudo-second-order sorption model best describes the experimental data on Co2+ biosorption kinetics. The Sips and Redlich-Peterson isotherm models best predict the biosorption capacity at equilibrium. According to the thermodynamic study, biosorption of Co2+ was endothermic and spontaneous. The effect of pH on the biosorption/desorption of Co2+ suggests that electrostatic attraction is the main biosorption mechanism. SEM-EDX verified the presence of Co2+ on the surface of the pretreated-saturated biosorbent and the absence of the metal after desorption.

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Section: Biosorption-desorption Cyclesmentioning

confidence: 99%

Biosorption of Co2+ Ions from Aqueous Solution by K2HPO4-Pretreated Duckweed Lemna gibba

2020

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“…This finding aligns with previous research, which has highlighted the effectiveness of primary alcohols, including methanol and ethanol, in both dye desorption and biosorbent regeneration. 88,89 The successful desorption of DCF from the biomass using methanol has promising implications for the reusability and cost-effectiveness of sorption processes.…”

Section: Desorption Studymentioning

confidence: 99%

Chemical activation of Microcystis aeruginosa biomass: a promising approach for enhanced diclofenac sorption and water treatment

Momin,

Nath,

Mahana

et al. 2023

J of Chemical Tech & Biotech

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BACKGROUNDDiclofenac (DCF), a widely used nonsteroidal anti‐inflammatory drug, has been detected in the environment. Its presence is of concern due to potential ecological impacts and health risks. The development of effective technologies for the removal of DCF from water is of paramount importance. The efficient removal of DCF from highly diluted solutions poses a further significant challenge. Microcystis aeruginosa, a rapidly growing cyanobacterium, possesses significant potential as a valuable biomass resource that is currently underutilized. This study investigates various pretreatments to enhance the adsorption capacity of nontoxic M. aeruginosa ACCMU‐118 biomass for DCF removal.RESULTSAlkali‐pretreated biomass achieved over 90% DCF removal at concentrations of 1000–5000 μg L−1. The modified biomass showed comparable efficiency in removing DCF from binary solutions containing heavy metals (Cd2+) or ibuprofen. Fourier transform infrared analysis revealed hydroxyl, carboxylic acid and alkene functional groups on the biomass surface contributing to DCF sorption. Chemical pretreatment enhanced binding site exposure, increasing DCF sorption capacity. Thermodynamic analysis confirmed the exothermic sorption and thermodynamically favorable process. Methanol regeneration allowed multiple sorption–desorption cycles, enhancing sustainability.CONCLUSIONThis cost‐effective approach demonstrates the potential of M. aeruginosa biomass for selective and efficient DCF removal from contaminated water sources. Chemical pretreatment expands the application potential of M. aeruginosa biomass as a biosorbent, showcasing its advantages in addressing the challenges of contaminated water treatment. © 2023 Society of Chemical Industry.

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“…The successful application of heavy-metal biosorption depends not only on the capacity and rate of a biosorbent to adsorb the heavy metal of interest from aqueous solutions but also on the ease of heavy-metal desorption and regeneration of the biosorbent [ 16 , 17 ]. The desorption of heavy metals from a metal-loaded biosorbent that has been used to treat metal-contaminated wastewater can be accomplished using suitable eluents; such an approach is important for metal recovery and regeneration, reuse, and safe disposal of the biosorbent, thereby reducing the amount of waste generated and the operating and capital costs of the wastewater treatment process [ 18 , 19 ].…”

Section: Introductionmentioning

confidence: 99%

Chromium Recovery from Chromium-Loaded Cupressus lusitanica Bark in Two-Stage Desorption Processes

Netzahuatl-Muñoz,

Aranda-García,

Cristiani-Urbina

2023

Plants

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Hexavalent chromium (Cr(VI)) contamination poses serious health and environmental risks. Chromium biosorption has been employed as an effective means of eradicating Cr(VI) contamination. However, research on chromium desorption from chromium-loaded biosorbents is scarce despite its importance in facilitating industrial-scale chromium biosorption. In this study, single- and two-stage chromium desorption from chromium-loaded Cupressus lusitanica bark (CLB) was conducted. Thirty eluent solutions were evaluated first; the highest single-stage chromium desorption efficiencies were achieved when eluent solutions of 0.5 M NaOH, 0.5 M H2SO4, and 0.5 M H2C2O4 were used. Subsequently, two-stage kinetic studies of chromium desorption were performed. The results revealed that using 0.5 M NaOH solution in the first stage and 0.5 M H2C2O4 in the second stage enabled the recovery of almost all the chromium initially bound to CLB (desorption efficiency = 95.9–96.1%) within long (168 h) and short (3 h) desorption periods at each stage. This study clearly demonstrated that the oxidation state of the recovered chromium depends on the chemical nature and concentration of the eluent solution. The results suggest the possible regeneration of chromium-loaded CLB for its subsequent use in other biosorption/desorption cycles.

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CYCLIC BIOSORPTION AND DESORPTION OF ACID RED 27 ONTO Eichhornia crassipes LEAVES

Abstract: Modelado de la biodegradación en biorreactores de lodos de hidrocarburos totales del petróleo intemperizados en suelos y sedimentos (Biodegradation modeling of sludge bioreactors of total petroleum hydrocarbons weathering in soil and sediments)

Cited by 13 publications

References 17 publications

Biosorption of Co2+ Ions from Aqueous Solution by K2HPO4-Pretreated Duckweed Lemna gibba

Biosorption of Co2+ Ions from Aqueous Solution by K2HPO4-Pretreated Duckweed Lemna gibba

Chemical activation of Microcystis aeruginosa biomass: a promising approach for enhanced diclofenac sorption and water treatment

Chromium Recovery from Chromium-Loaded Cupressus lusitanica Bark in Two-Stage Desorption Processes

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