K2HPO4- pretreatment significantly enhances the biosorption capacity of  Co2+ by Lemna gibba

Reyes-Ledezma, Jessica Lizeth; Ramírez-Rodríguez, Allan Eduardo; Ballinas-Cesatti, C.B.; Cristiani‐Urbina, Eliseo; Morales-Barrera, Liliana

doi:10.24275/rmiq/ia2042

Cited by 2 publications

(2 citation statements)

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“…Solutions of deionized water were adjusted to pH values between 1.5 and 7 with a diluted solution of HCl or NaOH. To each solution was added 1 g L −1 of biosorbent and the measurement of the zeta potential of the biosorbent surface was made at rt with a Zetasizer Nano-25 apparatus (Malvern Instruments Ltd., Malvern, UK) [54].…”

Section: Evaluation Of the Zeta Potentialmentioning

confidence: 99%

“…Accordingly, samples of onion peel before and after biosorption and following desorption were submitted to Fourier-transform infrared spectroscopy (FTIR) on a Frontier spectrophotometer (PerkinElmer, Waltham, MA, USA) equipped with an attenuated total reflection (ATR) accessory with a SeZn crystal (Pike Technologies, Madison, WI, USA). The FTIR-ATR spectra were acquired with 64 scans in the interval of 4000-500 cm −1 with a resolution of 4 cm −1 [54].…”

Section: Fourier-transform Infrared Spectroscopy (Ftir)mentioning

confidence: 99%

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Onion Peel: A Promising, Economical, and Eco-Friendly Alternative for the Removal of Divalent Cobalt from Aqueous Solutions

Lizcano-Delgado,

Martínez-Vázquez,

Cristiani-Urbina

et al. 2024

Processes

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There is a growing need for an economical and efficient method capable of removing heavy metals from residual water. The current contribution aimed to evaluate the capacity of onion peel, an abundant agroindustrial waste product, to remove divalent cobalt (Co2+) from aqueous solutions. Onion peel was submitted to proximal chemical analysis, and various operational factors involved in biosorption were tested. The most suitable temperature (30 °C), pH (7.0), and biosorbent particle size (300–800 µm) were found. With an initial Co2+ concentration of 380 mg L−1, the maximum capacity of Co2+ removal was 59.88 mg g−1 in 120 min. The pseudo-second order and Langmuir models provided the best fit to the experimental kinetics and equilibrium of Co2+ biosorption, respectively. The thermodynamic study evidenced an exothermic, non-spontaneous, and favorable reaction (ΔH0 = −5.78 kJ mol−1; ΔS0 = −21.13 J mol−1 K−1), suggesting the formation of stable bonds in the biosorbent-Co2+ complex. The carbonyl and hydroxyl groups apparently play a fundamental role in Co2+ removal, and electrostatic attraction, ion exchange, and chemisorption are the principal mechanisms. Thus, the biosorption of Co2+ by onion peel has potential as an economical, eco-friendly, efficient, and sustainable treatment for wastewater.

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Section: Evaluation Of the Zeta Potentialmentioning

confidence: 99%

Section: Fourier-transform Infrared Spectroscopy (Ftir)mentioning

confidence: 99%

Onion Peel: A Promising, Economical, and Eco-Friendly Alternative for the Removal of Divalent Cobalt from Aqueous Solutions

Lizcano-Delgado,

Martínez-Vázquez,

Cristiani-Urbina

et al. 2024

Processes

View full text Add to dashboard Cite

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Polymeric Biomass Derived Adsorbents for Co(II) Remediation, Recycling and Analysis

Tofan

2022

Polymers

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The gradual replacement of conventional materials with materials tailored to the green development goals is one of the needs of the day. Correspondingly, this article reviews and integrates, for the first time, the gathered knowledge on the use of the adsorbents based on polymeric biomasses (biosorbents) for a cleaner separation of cobalt (Co) from synthetic and actual solutions. It is a two-part comprehensive approach that debates the Co biosorption potential of bio-based polymers from the perspective of their virtual and real applications for decontamination, recovery, and analytical purposes. First, the removal performances of these materials to batch and fixed column biosorption of Co(II) from mono-component and multi-metallic laboratory solutions are systematized and discussed. Following that, the focus of the first part is shifted to the analytical capabilities of the biosorbents proposed for Co(II) quantification from synthetic solutions. The second section considers the polymeric biomasses successfully incorporated in practical strategies for the removal and recovery of Co(II) from real solutions. The opportunities provided by the use of biosorbents for the development of accurate and greener procedures in Co(II) analysis are also highlighted. The directions in which the research on this topic should be continued and strengthened are suggested.

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K2HPO4- pretreatment significantly enhances the biosorption capacity of Co2+ by Lemna gibba

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 2 publications

References 57 publications

Onion Peel: A Promising, Economical, and Eco-Friendly Alternative for the Removal of Divalent Cobalt from Aqueous Solutions

Onion Peel: A Promising, Economical, and Eco-Friendly Alternative for the Removal of Divalent Cobalt from Aqueous Solutions

Polymeric Biomass Derived Adsorbents for Co(II) Remediation, Recycling and Analysis

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