Preparation and characterization of cassava stem biochar for mixed reactive dyes removal from simulated effluent

Navya, A; Nandhini, S.; Sivamani, S.; Gajendiran, Vasu; Sivarajasekar, N.; Hosseini-Bandegharaei, Ahmad

doi:10.5004/dwt.2020.25635

Cited by 21 publications

(7 citation statements)

References 32 publications

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“…Navya et al [61] investigated the consequence of the adsorbent dosage for elimination of mixed responsive dye from simulated efuents using cassava trunk biochar adsorbents and by varying the adsorbent dosage from 0.6 g/l to 4.1 g/l. Tey discovered that the highest dye removal was 78 percent and that the adsorption capacity was 13.93 mg/g at an optimal concentration of 100 mg per 100 mL of dye solution.…”

Section: Efect Of the Adsorbent Dosagementioning

confidence: 99%

A Review on Cassava Residues as Adsorbents for Removal of Organic and Inorganic Contaminants in Water and Wastewater

Gajendiran

Prabu

Sivamani³

et al. 2023

Journal of Chemistry

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An increase in water demand for drinking, agriculture, and industries necessitates the treatment of water and wastewater. Among various conventional treatment techniques available, adsorption is found to be one of the most economical and feasible methods. Adsorbents from plant biomass are effective for the removal of organic and inorganic pollutants. Cassava has gained attention among researchers during the past decades due to its plentiful availability and resilient characteristics. Even though cassava contains cyanogenic glucosides as toxins, it is used in industries for development of various products. Cassava stem, rhizome, peel, and bagasse are industrial residues that are generated in abundance. The present review focusses on factors affecting adsorption using cassava residues, adsorbent preparation and activation methods, equilibrium, mass transfer, kinetics, and thermodynamic studies of adsorption.

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Section: Efect Of the Adsorbent Dosagementioning

confidence: 99%

A Review on Cassava Residues as Adsorbents for Removal of Organic and Inorganic Contaminants in Water and Wastewater

Gajendiran

Prabu

Sivamani³

et al. 2023

Journal of Chemistry

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“…After complete drying, zest was placed in a muffle furnace at 350 °C for the preparation of biochar. The biochar was crushed in mortar and pestle and sieved to obtain the uniform particle size of 250 μm (Navya et al 2020).…”

Section: Preparation Of Adsorbentmentioning

confidence: 99%

Back-propagation neural network: Box–Behnken design modelling for optimization of copper adsorption on orange zest biochar

Sivamani¹,

Prasad²,

Nithya

et al. 2021

Int. J. Environ. Sci. Technol.

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Heavy metals adsorption by adsorbents prepared from natural materials is a low-cost effective method for their removal from aqueous environments. This study aims to assess the applicability of orange zest biochar to adsorb divalent copper (cupric chloride) from its aqueous solution by maximizing the adsorption capacity using feed-forward back-propagation neural network (FFBPNN)-Box-Behnken design (BBD) modelling. BBD modelling predicted the maximum of 99.61% copper removal at an initial concentration of copper, adsorbent dosage and temperature of 100 ppm, 192.5 mg per 100 mL of feed solution and 38 °C. The results showed the best fit between experimental, BBD and FFBPNN predicted values. Langmuir isotherm fitted well with the experimental data than Freundlich model, and the maximum adsorption capacity was found to be 116.28 mg/g. Also, adsorption kinetic data followed the Lagergren's pseudo-first-order kinetic model. Thus, the obtained results conclude that the orange zest biochar was found to be one of the potential adsorbents for the removal of divalent copper from its aqueous solution.

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“…Cassava peels can be used as an adsorbent. Their adsorptive properties have been observed in some studies for the removal of contaminants such as fluorine [ 30 ], methylene blue [ 31 ], rhodamine B [ 32 ], antibiotics [ 33 ], heavy metals [ 28 , 34 , 35 , 36 , 37 ], norfloxacin [ 38 ], nitrate [ 39 ], dye mixture [ 40 ], and malachite green [ 41 ].…”

Section: Introductionmentioning

confidence: 99%

Improved Adsorption of the Toxic Herbicide Diuron Using Activated Carbon Obtained from Residual Cassava Biomass (Manihot esculenta)

et al. 2022

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The production and consumption of cassava (Manihot esculenta) occur in several places worldwide, producing large volumes of waste, mostly in the form of bark. This study sought to bring a new purpose to this biomass through producing activated carbon to use as an adsorbent to remove the herbicide Diuron from water. It was observed that the carbon contains the functional groups of methyl, carbonyl, and hydroxyl in a strongly amorphous structure. The activated carbon had a surface area of 613.7 m2 g−1, a pore volume of 0.337 cm3 g−1, and a pore diameter of 1.18 nm. The Freundlich model was found to best describe the experimental data. It was observed that an increase in temperature favored adsorption, reaching a maximum experimental capacity of 222 mg g−1 at 328 K. The thermodynamic parameters showed that the adsorption was spontaneous, favorable, and endothermic. The enthalpy of adsorption magnitude was consistent with physical adsorption. Equilibrium was attained within 120 min. The linear driving force (LDF) model provided a strong statistical match to the kinetic curves. Diffusivity (Ds) and the model coefficient (KLDF) both increased with a rise in herbicide concentration. The adsorbent removed up to 68% of pollutants in a simulated effluent containing different herbicides. Activated carbon with zinc chloride (ZnCl2), produced from leftover cassava husks, was shown to be a viable alternative as an adsorbent for the treatment of effluents containing not only the herbicide Diuron but also a mixture of other herbicides.

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Preparation and characterization of cassava stem biochar for mixed reactive dyes removal from simulated effluent

Cited by 21 publications

References 32 publications

A Review on Cassava Residues as Adsorbents for Removal of Organic and Inorganic Contaminants in Water and Wastewater

A Review on Cassava Residues as Adsorbents for Removal of Organic and Inorganic Contaminants in Water and Wastewater

Back-propagation neural network: Box–Behnken design modelling for optimization of copper adsorption on orange zest biochar

Improved Adsorption of the Toxic Herbicide Diuron Using Activated Carbon Obtained from Residual Cassava Biomass (Manihot esculenta)

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