Removal of Ni2+, Cu2+, Zn2+, Cd2+and Pb2+ions from aqueous solutions using cashew peduncle bagasse as an eco-friendly biosorbent

Moreira, Sarah Abreu; Melo, Diego de Quadros; Lima, Adman Câmara Soares; Sousa, Francisco W.; Oliveira, André Gadelha de; Nascimento, Ronaldo F.

doi:10.1080/19443994.2015.1037355

Cited by 9 publications

References 41 publications

(44 reference statements)

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Chemical modifications of lignocellulosic materials and their application for removal of cations and anions from aqueous solutions

Melo

Neto

Barros

et al. 2015

J of Applied Polymer Sci

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This review discussed the last 10 years progress in the use of lignocellulosic materials chemically modified as low-cost biosorbents. Thus, the chemical modifications, such as chemical pretreatment, oxidation, as well as the grafting of carboxyl groups, amines, amides, etc., on lignocellulosic fibers, that aim to increase the number of adsorption sites and maximize toxic metal ion adsorption capacity have been addressed. The literature presents results that indicated performances of biosorbents equal to or even higher than conventional methods and adsorbents. Many efforts have been concentrated on the improvements of these biosorbents through chemical modifications. However, some difficulties still exist, including the discharge of colored organic compounds resulting from the pretreatments and the development of fast, clean, and low-cost synthesis of selective and multifunctional adsorbents. Thus, the challenge for future research is to find solutions to these difficulties in order to finally make lignocellulosics biosorbents that can replace conventional adsorbent materials.

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Chemical modifications of lignocellulosic materials and their application for removal of cations and anions from aqueous solutions

Melo

Neto

Barros

et al. 2015

J of Applied Polymer Sci

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Lab‐scale continuous flow studies for comparative biosorption of cadmium (II) on untreated and xanthated Ficus religiosa biomass

Tariq

Farooq

Athar

et al. 2021

Water Environment Research

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The present studies report the use of an ecofriendly biomass Ficus religiosa in untreated (UFR) and xanthate treated (XFR) forms for the Cd (II) ions removal in a fixed bed column. FTIR, SEM-EDS, BET surface area, and elemental analysis (CHNS) techniques were used to characterize the biosorbents. The acquired data supported FTIR findings regarding the nature of functional groups present in the materials. Packed bed continuous flow studies explored the effects of various parameters such as Cd (II) ion concentration (100 mg/L-300 mg/L), bed heights (5 cm-30 cm), pH (3-5), at a constant linear flow rate ($1.13 cm/min).The obtained S-shaped breakthrough curves indicated the efficiency of the packed bed for the Cd (II) removal. Breakthrough time and exhaust times increased (67.5 min-390 min and 292.5 min-1852.5 min) (97.5 min-442.5 min and 345 min-1920 min) for unmodified and modified respectively with bed heights. The BDST, Thomas, and Yoon-Nelson models were used to evaluate the experimental results. The Yoon-Nelson model describes the breakthrough data more efficiently compared to other models. Under similar conditions, the modified material exhibited 400% increased capacity (55.20 mg/g) than that of unmodified material (13.33 mg/g). Thus, xanthate modification significantly enhanced the capacity for Cd (II) ions from aqueous solutions. Practitioner Points• Xanthate modification of Ficus religiosa is an environmentally friendly process.• Modified and unmodified materials were utilized for Cd (II) removal in fixed bed column process which is industrially viable process.• Low inlet Cd (II) concentration at pH 5 and higher bed height favored the continuous flow process at fixed flow rate.• Modification caused an increase of about 400% in the capacity of material.

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Artificial neural network (ANN) approach for modeling Zn(II) adsorption in batch process

Yıldız

2017

Korean J. Chem. Eng.

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Removal of Ni²⁺, Cu²⁺, Zn²⁺, Cd²⁺and Pb²⁺ions from aqueous solutions using cashew peduncle bagasse as an eco-friendly biosorbent

Cited by 9 publications

References 41 publications

Chemical modifications of lignocellulosic materials and their application for removal of cations and anions from aqueous solutions

Chemical modifications of lignocellulosic materials and their application for removal of cations and anions from aqueous solutions

Lab‐scale continuous flow studies for comparative biosorption of cadmium (II) on untreated and xanthated Ficus religiosa biomass

Artificial neural network (ANN) approach for modeling Zn(II) adsorption in batch process

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