Adsorption of Reactive Black 5 and Basic Blue 12 using biochar from gasification residues: Batch tests and fixed-bed breakthrough predictions for wastewater treatment

Nascimento, Bruna Figueiredo do; Araújo, Caroline Maria Bezerra de; Nascimento, Alisson Castro do; Costa, Gabriel Rodrigues Bezerra da; Gomes, Brener Felipe Melo Lima; Silva, Maryne Patrícia da; Santos, Ronald Keverson da Silva; Sobrinho, Maurı́cio Alves da Motta

doi:10.1016/j.biteb.2021.100767

Cited by 20 publications

(7 citation statements)

References 43 publications

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“…Differences among adsorbent materials with variable capacity values (q m ) are reported in the literature. The q m (Langmuir) at 298.16 K and pH 6 obtained for RB5 in this work was 116.78 mg/g, clearly superior to other adsorbents: fungal biomass (26.95 mg/g) [50], commercial granular activated carbon (12.25 mg/g) [51], biochar from gasification of wood waste (35.67 mg/g) [52], Pb-doped ZnO nanoparticles by sol-gel technique (29.06 mg/g) [53], mushroom waste (14.62 mg/g) [54], textile scraps from the clothing industry treated by pyrolysis and chemical activation with K 2 CO 3 (10.3 mg/g) [55], and banana peel powder (49.2 mg/g at pH 3) [56]. Our adsorbent was even more efficient in removing RB5 than a commercial activated carbon (94.7 mg/g) [57].…”

Section: Comparison Of Ch-des Adsorption Capacitiesmentioning

confidence: 62%

Accessible Eco-Friendly Method for Wastewater Removal of the Azo Dye Reactive Black 5 by Reusable Protonated Chitosan-Deep Eutectic Solvent Beads

Martínez-Rico,

Blanco,

Domínguez

et al. 2024

Molecules

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A novel approach to enhance the utilization of low-cost and sustainable chitosan for wastewater remediation is presented in this investigation. The study centers around the modification of chitosan beads using a deep eutectic solvent composed of choline chloride and urea at a molar ratio of 1:2, followed by treatment with sulfuric acid using an impregnation accessible methodology. The effectiveness of the modified chitosan beads as an adsorbent was evaluated by studying the removal of the azo dye Reactive Black 5 (RB5) from aqueous solutions. Remarkably, the modified chitosan beads demonstrated a substantial increase in adsorption efficiency, achieving excellent removal of RB5 within the concentration range of 25–250 mg/L, ultimately leading to complete elimination. Several key parameters influencing the adsorption process were investigated, including initial RB5 concentration, adsorbent dosage, contact time, temperature, and pH. Quantitative analysis revealed that the pseudo-second-order kinetic model provided the best fit for the experimental data at lower dye concentrations, while the intraparticle diffusion model showed superior performance at higher RB5 concentration ranges (150–250 mg/L). The experimental data were successfully explained by the Langmuir isotherm model, and the maximum adsorption capacities were found to be 116.78 mg/g at 298 K and 379.90 mg/g at 318 K. Desorption studies demonstrated that approximately 41.7% of the dye could be successfully desorbed in a single cycle. Moreover, the regenerated adsorbent exhibited highly efficient RB5 removal (80.0–87.6%) for at least five consecutive uses. The outstanding adsorption properties of the modified chitosan beads can be attributed to the increased porosity, surface area, and swelling behavior resulting from the acidic treatment in combination with the DES modification. These findings establish the modified chitosan beads as a stable, versatile, and reusable eco-friendly adsorbent with high potential for industrial implementation.

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Section: Comparison Of Ch-des Adsorption Capacitiesmentioning

confidence: 62%

Accessible Eco-Friendly Method for Wastewater Removal of the Azo Dye Reactive Black 5 by Reusable Protonated Chitosan-Deep Eutectic Solvent Beads

Martínez-Rico,

Blanco,

Domínguez

et al. 2024

Molecules

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“…Sorption equilibrium times similar to those for RH, RH-A, RH-E were also obtained in the studies on the sorption of RB5 on goldenrod biomass (150 min) [ 39 ], wheat straw (195 min) [ 40 ] and sunflower biomass (210 min) [ 41 ]. In turn, equilibrium times similar to that of RH-EA were recorded in the studies addressing the removal of RB5 on activated carbon from Carob tree (120 min) [ 42 ] as well as biochar from gasification of wood waste [ 43 ].…”

Section: Resultsmentioning

confidence: 99%

Aminated Rapeseed Husks (Brassica napus) as an Effective Sorbent for Removing Anionic Dyes from Aqueous Solutions

Jóźwiak,

Filipkowska

2024

Molecules

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The study investigated the effect of modifying rapeseed husks with ammonia and epichlorohydrin on their sorption capacity against anionic reactive dyes: Reactive Black 5 (RB5) and Reactive Yellow 84 (RY84). Its scope included sorbents characterization (FTIR, pHPZC), determination of pH influence on the sorption effectiveness of dyes, the adsorption kinetics of dyes, as well as the maximum sorption capacity. The study proved that the reaction of rapeseed husk biomass with ammonia can lead to its amination, namely to the introduction of amine functional groups into the material’s structure. The sorption effectiveness of RB5 and RY84 on the tested sorbents was the highest in the pH range of 2–3. The dye sorption kinetics was well described by the pseudo-second-order model. The sorption equilibrium time ranged from 90 to 180 min, and depended on the initial concentration of dyes and the number of amino groups on the sorbent’s surface. The most efficient of the sorbents tested were rapeseed husks pre-activated with epichlorohydrin and then aminated with ammonia. Their sorption capacity determined for RB5 and RY84 was 135.83 mg/g and 114.23 mg/g, respectively, which was 794% and 737% higher than that of the non-modified husks.

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“…The regeneration and reusability of the adsorbent are considered as key characteristics to evaluate the adsorption performance of dyes for field application. 77–79 Therefore, the regeneration and reusability of CV and AY17 were studied using 0.1 N HCl and 0.1 N HNO 3 . After the desorption of dyes from the adsorbent, the regenerated DB-perovskite/CAg hybrid was washed with distilled water and dried in the oven at 50 °C.…”

Section: Resultsmentioning

confidence: 99%

Synthesis of a novel perovskite-carbon aerogel hybrid adsorbent with multiple metal-Lewis active sites for the removal of dyes from water: experimental and DFT studies

et al. 2023

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Adsorption of Reactive Black 5 and Basic Blue 12 using biochar from gasification residues: Batch tests and fixed-bed breakthrough predictions for wastewater treatment

Cited by 20 publications

References 43 publications

Accessible Eco-Friendly Method for Wastewater Removal of the Azo Dye Reactive Black 5 by Reusable Protonated Chitosan-Deep Eutectic Solvent Beads

Accessible Eco-Friendly Method for Wastewater Removal of the Azo Dye Reactive Black 5 by Reusable Protonated Chitosan-Deep Eutectic Solvent Beads

Aminated Rapeseed Husks (Brassica napus) as an Effective Sorbent for Removing Anionic Dyes from Aqueous Solutions

Synthesis of a novel perovskite-carbon aerogel hybrid adsorbent with multiple metal-Lewis active sites for the removal of dyes from water: experimental and DFT studies

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