Adsorptive Removal of Reactive Blue Dye by Cucumber Peel Adsorbent: Isotherm, Kinetics and Mass Transfer Studies

Vasu, Gajendiran; Sivamani, S.

doi:10.1007/978-981-19-2832-1_12

Cited by 3 publications

(1 citation statement)

References 18 publications

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“…In recent years, great hopes have been fostered in the application of waste materials from the agri-food industry as unconventional sorbents [ 12 ]. The largest group of sorption materials tested so far was lignocellulosic plant biomass [ 13 , 14 ], including stems [ 15 ] and leaves of crops [ 16 , 17 ], seed hulls [ 18 , 19 ], nut shells [ 20 , 21 ], as well as fruit [ 22 , 23 ] and vegetable peels [ 24 , 25 ]. Ample studies have also been carried out on the removal of dyes using waste from the wood industry, such as sawdust [ 26 , 27 ], bark [ 28 , 29 ], cones [ 30 , 31 ], or tree leaves [ 32 , 33 ].…”

Section: Introductionmentioning

confidence: 99%

The Use of Various Types of Waste Paper for the Removal of Anionic and Cationic Dyes from Aqueous Solutions

Jóźwiak,

Filipkowska,

Bednarowicz

et al. 2024

Molecules

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This study examined the possibility of using various types of waste paper—used newsprint (NP), used lightweight coated paper (LWC), used office paper (OP), and used corrugated cardboard (CC)—for the removal of anionic dyes, Acid Red 18 (AR18) and Acid Yellow 23 (AY23), and cationic dyes, Basic Violet 10 (BV10) and Basic Red 46 (BR46), from aqueous solutions. The scope of this research included the characterization of sorbents (FTIR, SEM, BET surface area, porosity, pHPZC, effectiveness of water coloration), determination of pH effect on the effectiveness of dye sorption, sorption kinetics (pseudo-first-order model, second-order model, intraparticular diffusion model), and the maximum sorption capacity (Langmuir models and Freundlich model) of the tested sorbents. The use of waste paper materials as sorbents was found to not pose any severe risk of aquatic environment contamination. AR18, AY23, and BV10 sorption intensities were the highest at pH 2, and that of RB46 at pH 6. The waste paper sorbents proved particularly effective in removing cationic dyes, like in the case of, e.g., NP, which had a sorption capacity that reached 38.87 mg/g and 90.82 mg/g towards BV10 and BR46, respectively, and were comparable with that of selected activated carbons (literature data).

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Section: Introductionmentioning

confidence: 99%

The Use of Various Types of Waste Paper for the Removal of Anionic and Cationic Dyes from Aqueous Solutions

Jóźwiak,

Filipkowska,

Bednarowicz

et al. 2024

Molecules

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Cassava stem biochar (CSB) for chromium removal from produced water: sustainable adsorption and environmental implications

Gajendiran,

Deivasigamani,

Sivamani

et al. 2024

J of Chemical Tech & Biotech

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BACKGROUNDProduced water, a byproduct of oil and gas extraction, often contains elevated levels of heavy metals, including chromium, posing significant environmental and health risks. Cassava stem biochar (CSB) was prepared by pyrolysis of cassava stem and its potential has been investigated for the removal of chromium (Cr) from produced water. Batch adsorption experiments were conducted to evaluate the adsorption capacity of CSB under various conditions of pH, contact time, initial produced water concentration, adsorbent dosage, agitation speed, temperature and particle size.RESULTSFrom the experiment results, it was found that CSB showed good adsorption capacity of chromium ions from produced water. The adsorption process was found to be highly pH‐dependent, with maximum removal efficiency observed at a pH of 4.0. Equilibrium data were fitted to the Freundlich isotherm models, indicating multilayer adsorption on a heterogeneous surface. The kinetic data demonstrated that the adsorption process followed pseudo‐first‐order as well as pseudo‐second‐order kinetics, suggesting a physisorption and chemisorption mechanism. The thermodynamic parameters, including changes in enthalpy (ΔH), and entropy (ΔS), were evaluated to gain insights into the spontaneity and feasibility of the adsorption process. The negative ΔH values indicated that the adsorption of Cr onto CSB was non‐spontaneous and exothermic in nature. The negative ΔS value suggested the adsorption is feasible.CONCLUSIONThis comprehensive study demonstrates the potential of cassava stem biochar as an effective and environmentally friendly adsorbent for the removal of chromium from produced water. © 2024 Society of Chemical Industry (SCI).

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A Review on Heavy Metal and Dye Removal via Activated Carbon Adsorption Process

Soonmin

Saad

2022

Asian J. Chem.

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Activated carbon could be prepared by using various precursors, which contained carbonaceous materials. In this work, preparation process as well as properties of the obtained activated carbon, removal of heavy metal ions and toxic dyes were reported. The adsorption process was affected under different conditions such as carbonization process, activating agent, adsorbent dose, adsorbate’s concentration, agitation process and the pH value. The adsorption data could be observed well fitted with Langmuir, Freundlich, pseudo second order kinetic, pseudo-first order kinetic, Temkin model and other isotherms, if showed the highest correction efficiency value. The spontaneous (−ΔG), increase in randomness (ΔS), endothermic (ΔH) and exothermic (−ΔH) could be determined via thermodynamic studies.

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Adsorptive Removal of Reactive Blue Dye by Cucumber Peel Adsorbent: Isotherm, Kinetics and Mass Transfer Studies

Cited by 3 publications

References 18 publications

The Use of Various Types of Waste Paper for the Removal of Anionic and Cationic Dyes from Aqueous Solutions

The Use of Various Types of Waste Paper for the Removal of Anionic and Cationic Dyes from Aqueous Solutions

Cassava stem biochar (CSB) for chromium removal from produced water: sustainable adsorption and environmental implications

A Review on Heavy Metal and Dye Removal via Activated Carbon Adsorption Process

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