Kinetic studies of the removal of methylene blue from aqueous solution by biochar derived from jackfruit peel

Ton-That, Loc; Huynh, Thi-Ngoc-Linh; Duong, Bich-Ngoc; Nguyen, Duy-Khoi; Nguyen, Ngoc-An; Pham, Van-Hien; Ho, Thien-Hoang; Dinh, Van-Phuc

doi:10.1007/s10661-023-11867-6

Cited by 7 publications

(1 citation statement)

References 81 publications

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“…It indicated that chemisorption was the main process for the adsorption of TC and LEV on TBI K . [43] Besides, it was found that the adsorption capacity of TBI K on LEV achieved 90 mg g -1 within 2 min whereas it was 17 min for TC (Figure S2a and b). Besides, a relatively quick equilibrium within 20 min was found and a larger q e,cal was achieved for MTL.…”

Section: Kineticsmentioning

confidence: 95%

Functionalized typha biochar for antibiotic removal via low‐carbon integrated method: Performance and mechanism analyses

Liu,

Wen,

et al. 2024

CLEAN Soil Air Water

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Antibiotic residues in water represent an urgent environmental challenge. To efficiently remove these residues, a low‐carbon integrated biochar synthesis method was proposed, and an optimized typha biochar (TBIK) was prepared. Compared with the biochar prepared by a conventional two‐step carbonization and activation method (TBTK), the TBIK preparation process reduced energy consumption by 43849.58 J and cut carbon dioxide emissions by 32.80%. TBIK exhibited a large surface area of 1252.40 m2/g and rapidly achieved an equilibrium removal efficiency of 99.95% within 20 min for simulated antibiotics wastewater. Furthermore, TBIK possessed more number of functional groups than TBTK, especially O‐H and C‐S groups. The adsorption stability and tolerance of TBIK in solutions with different ionic strengths and coexisting anions were examined. Characterization techniques such as scanning electron microscopy (SEM), Fourier transform infrared (FT‐IR), and X‐ray photoelectron spectroscopy (XPS) as well as Brunauer, Emmett and Teller (BET) analyses were employed to elucidate the morphology and adsorption mechanism of the adsorbent. The microporous structure and abundance of functional groups are key to the excellent adsorption capabilities of TBIK. Thus, this integrated method for biochar production, optimized for treating antibiotic wastewater, holds significant potential for future applications.

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Section: Kineticsmentioning

confidence: 95%

Functionalized typha biochar for antibiotic removal via low‐carbon integrated method: Performance and mechanism analyses

Liu,

Wen,

et al. 2024

CLEAN Soil Air Water

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Efficient removal of tebuconazole from wastewater by zinc‐modified passion fruit peels: Adsorption behaviour and mechanism

Song,

Fei,

Meng

et al. 2024

Can J Chem Eng

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In this research, an effective adsorbent, ZnCl2‐modified biochar (Zn‐PFPB), was prepared from unprocessed passion fruit peel (PFP) for the removal of tebuconazole (TE) from wastewater. The synthesized Zn‐PFPB was characterized by Fourier transform infrared spectroscopy (FT‐IR), scanning electron microscopy (SEM), X‐ray photoelectron spectroscopy (XPS), X‐ray diffraction (XRD), N2 adsorption/desorption curves, and point of zero charge, which suggested that Zn‐PFPB had an amorphous structure and high porosity. Optimal TE removal occurred at pH 2 with an adsorbent dosage of 0.5 g L−1. The kinetics of the adsorption process followed the pseudo‐second‐order model while the isotherm model used was the Langmuir model, suggesting monolayer chemisorption. The maximum adsorption capacity reached 201.32 mg g−1 for TE. The adsorption mechanisms were pore filling, hydrogen bonding, π‐π interactions, and surface complexation. Importantly, Zn‐PFPB maintained removal efficiency of more than 65% over a broad pH range (2–10), which can be considered as a promising candidate for practical applications. The regeneration rate of Zn‐PFPB was determined to be 70% after the third cycle when using 1 mol L−1 NaOH. The cost analysis showed a fabrication cost of $5.093/kg for Zn‐PFPB. Batch mode scale‐up design showed that 18 g of Zn‐PFPB can remove 95% TE from 50 L of wastewater containing 50 mg L−1 TE. This work proposes a new, economical, and eco‐friendly way of managing agricultural waste in wastewater treatment and soil management.

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A facile and cost‐effective method for crystalline cellulose extraction from sugarcane bagasse applied to remove crystal violet dye from solution

Phong,

Tien,

2024

Vietnam Journal of Chemistry

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In this work, crystalline cellulose (CC) was extracted from sugarcane bagasse through a facile modification method and further applied to absorb crystal violet dye (CV) in aqueous media. The proposed modification approach uses a mixture of NaOH and H2O2 only in a two‐step extraction process. This method is more straightforward than previous extraction methods, which used complex mixtures of solvents and additives. The yield obtained was 76.90%, approximately higher than several works declared before. The as‐prepared product was then determined with Fourier transform infrared spectroscopy (FT‐IR) and X‐ray diffraction (XRD) to analyze the presence of the functional groups and crystallinity, respectively. Furthermore, surface morphology, specific surface area of 0.634 m2 g−1, pore diameters of 3.010 nm, and pore size distribution of the obtained CC were determined with scanning electron microscope (SEM) and Brunauer–Emmett–Teller (BET) methods from the nitrogen adsorption–desorption isotherm, respectively. Additionally, serial experiments were conducted to investigate the influence of pH on the CV removal process. The results showed that the extracted material had a wide operating pH range of 6.0–9.0 and exhibited the highest CV treatment ability at pH 7.0. Besides, the effect of the parameters on the CV removal abilities, such as contact time (1–90 min), adsorbent dose (0.01–0.5 g), and initial CV concentration (10–100 mg L−1), was also investigated. To evaluate the CV removal ability of extract CC in the aqueous media and propose a suitable adsorption mechanism, we used several adsorption isotherms and adsorption kinetic models, such as Langmuir, Freundlich, Temkin, and Elovich. The obtained results showed that the adsorbent followed the pseudo‐second‐order kinetic model. Moreover, according to the Langmuir adsorption isotherm model, the maximum CV adsorption capacity (qm) of the CC was 8.857 mg g−1. Thermodynamic parameters such as −20 < ΔG0 < 0 (kJ mol−1), ΔH0 was 29.500 kJ mol−1, and the positive ΔS0 proved that the CV adsorption process of the CC was physical adsorption, spontaneous and endothermic. Overall, this study offers a simple approach based on the acid hydrolysis method for the high‐value utilization of sugarcane bagasse to isolate CC. This obtained product could become an active adsorbent for removing CV from the aqueous solutions.

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Kinetic studies of the removal of methylene blue from aqueous solution by biochar derived from jackfruit peel

Cited by 7 publications

References 81 publications

Functionalized typha biochar for antibiotic removal via low‐carbon integrated method: Performance and mechanism analyses

Functionalized typha biochar for antibiotic removal via low‐carbon integrated method: Performance and mechanism analyses

Efficient removal of tebuconazole from wastewater by zinc‐modified passion fruit peels: Adsorption behaviour and mechanism

A facile and cost‐effective method for crystalline cellulose extraction from sugarcane bagasse applied to remove crystal violet dye from solution

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