Adsorption capacity of the biochar obtained from Pinus patula wood micro-gasification for the treatment of polluted water containing malachite green dye

Rubio-Clemente, Ainhoa; Gutiérrez, Jonatan; Henao, Hanna Marisol; Melo, Aline Moreira Portella de; Pérez, Juan F.; Chica, Edwin

doi:10.1016/j.jksues.2021.07.006

Cited by 27 publications

(18 citation statements)

References 40 publications

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“…The modelling process was carried out through the analysis of variance (ANOVA) by considering a p-value lower than 0.05. The effects of the most influencing factors were examined to determine the combinations that would give the best second-order regression model for dye adsorption by activated SCG biochar (Rubio-Clemente et al, 2021). Moreover, the model parameters were described using correlation coefficient (R 2 ), adjusted R 2 and F-test (Jafari et al, 2017;Rubio-Clemente et al, 2021).…”

Section: Modelling and Optimisationmentioning

confidence: 99%

“…The effects of the most influencing factors were examined to determine the combinations that would give the best second-order regression model for dye adsorption by activated SCG biochar (Rubio-Clemente et al, 2021). Moreover, the model parameters were described using correlation coefficient (R 2 ), adjusted R 2 and F-test (Jafari et al, 2017;Rubio-Clemente et al, 2021). The best result obtained from numerical optimisation with high desirability was validated by conducting triplicate laboratory experiments.…”

Section: Modelling and Optimisationmentioning

confidence: 99%

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Adsorption activity of spent coffee ground biochar for the removal of Vivizole Red 3BS dye from aqueous solution

Adamu

Zewge

Chebude

2023

Preprint

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Spent coffee ground (SCG) is rich in carbon, and slow pyrolysis can convert biomass into biochar that can be used as an adsorbent to remove dyes. In one-step carbonization and activation of SCG, iron (III) chloride and K2CO3 were used as a catalyst and solid-state activator, respectively. The predictive model for the removal of the dye by the activated SCG biochar was evaluated through response surface methodology- central composite design (RSM-CCD). ANOVA result analysis showed that among the model terms, the effect of pH was the most significant in removing the Vivizole Red 3 BS 150 % (VR 3BS) dye. The optimum values suggested by the CCD were an initial dye concentration of 20 mg/L, pH 3, an adsorbent dose of 0.5 g per 100 mL, and a contact time of 60 min, where the optimum removal of the dye was 94 %. The optimum conditions were validated using synthetic and textile wastewater, and the percent removals of the VR 3BS dye by the activated SCG were 96% and 90 %, respectively. The dye removal efficiency of activated SCG biochar was more significant than that of commercial activated carbon. The Langmuir model best described the adsorption isotherm. Adsorption kinetic data fitted well to the pseudo-second-order model. Both intraparticle and film diffusions affected the dye's adsorption rate. The thermodynamics study has shown that the adsorption process was a spontaneous, less random, exothermic process governed by a physical sorption mechanism. Thermal regeneration of the exhausted biochar improved VR 3BS dye removal efficiency.

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Section: Modelling and Optimisationmentioning

confidence: 99%

Section: Modelling and Optimisationmentioning

confidence: 99%

Adsorption activity of spent coffee ground biochar for the removal of Vivizole Red 3BS dye from aqueous solution

Adamu

Zewge

Chebude

2023

Preprint

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“…According to the study by Sun et al [63], samples with functional groups counting oxygen indicated high reactivity for graphene oxide adsorption. The thermal degradation of the chars and the reduction of the peaks compared to the raw materials indicate that an aromatic structure was formed during gasification [64,65].…”

Section: Surface Functional Groupsmentioning

confidence: 99%

Evaluation of Physical and Chemical Properties of Residue from Gasification of Biomass Wastes

et al. 2022

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Thermochemical conversion of biomass waste is a high potential option for increasing usage of renewable energy sources and transferring wastes into the circular economy. This work focuses on the evaluation of the energetic and adsorption properties of solid residue (char) of the gasification process. Gasification experiments of biomass wastes (wheat straw, hay and pine sawdust) were carried out in a vertical fixed bed reactor, under a CO2 atmosphere and at various temperatures (800, 900 and 1000 °C). The analysis of the energy properties of the obtained chars included elemental and thermogravimetric (TGA) analysis. TGA results indicated that the chars have properties similar to those of coal; subjected data were used to calculate key combustion parameters. As part of the analysis of adsorption properties, BET, SEM, FTIR and dynamic methanol vapor sorption tests were conducted. The specific surface area has risen from 0.42–1.91 m2/g (biomass) to 419–891 m2/g (char). FTIR spectroscopy confirmed the influence of gasification on the decomposition of characteristic chemical compounds for biomass. Methanol sorption has revealed for the 900 °C chars of pine sawdust the highest sorption capacity and its mass change was 24.15% at P/P0 = 90%. Selected chars might be an appropriate material for volatile organic compounds sorption.

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“…Serious water pollution and fragile environmental carrying capacity provide an urgent demand and a huge potential market for the development of efficient dye removal technology. The water-soluble organic compound methylene blue (MB), as the commonly contaminants in the industrial wastewater with a complex chemical structure and stable properties, is difficult to remove by traditional water treatment technology. − At present, the main technology for removing MB dyes is the physical adsorption method, which mainly uses the abundant pores of adsorbent material to adsorb dyes. − Adsorption is a technology with a high removal rate, low cost, and good prospects. In addition, the extraction method can also separate the dyes from the wastewater by the different solubility of dyes between extractant and water but the extractant used will also cause pollution to the environment. , The ozone method, the electrochemical method, photocatalytic degradation, and other methods can adsorb or degrade dye molecules, so as to achieve the purpose of dye treatment. − …”

Section: Introductionmentioning

confidence: 99%

Three-Dimensional Porous Carbon Material Derived from Moldy Rice Noodles for Highly Efficient Removal of Methylene Blue Dye

Wang,

Liu,

Yuan

et al. 2024

ACS Sustainable Resour. Manage.

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Methylene blue (MB) is a water-soluble organic compound with a complex chemical structure and stable properties, which is difficult to remove. In this work, a high specific surface area MB dye adsorbent of 3D hierarchical porous derived carbon was obtained from moldy rice noodles (RN) through high-temperature carbonization and strong alkali etching. The morphology and structural properties, pore structure, specific surface area, and crystallinity of RN carbon (RNC) are analyzed. The adsorption properties of RNC for MB dye molecules are studied, including the influence of different activator (KOH) ratios, the influence of initial concentration of dye, and the influence of adsorption kinetics and thermodynamics on the adsorption of dye. The results show that the optimal ratio of RN to activator is 1:2 (RNC-2), and its specific surface area is the highest, reaching 1693.31 m 2 /g. At 298 K, the maximum theoretical adsorption capacity of RNC-2 is 626.25 mg/g, and at 333 K, the maximum theoretical adsorption capacity is 827.34 mg/g. This work shows that the derived carbon material obtained from moldy RN is a kind of adsorbent material with excellent properties and has a great application prospect in purifying industrial wastewater. This work also means that moldy RN can be recycled rather than discarded. In addition, this material can also be used in fields such as energy storage and catalysis in the future.

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Adsorption capacity of the biochar obtained from Pinus patula wood micro-gasification for the treatment of polluted water containing malachite green dye

Cited by 27 publications

References 40 publications

Adsorption activity of spent coffee ground biochar for the removal of Vivizole Red 3BS dye from aqueous solution

Adsorption activity of spent coffee ground biochar for the removal of Vivizole Red 3BS dye from aqueous solution

Evaluation of Physical and Chemical Properties of Residue from Gasification of Biomass Wastes

Three-Dimensional Porous Carbon Material Derived from Moldy Rice Noodles for Highly Efficient Removal of Methylene Blue Dye

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