Nanoporous Biochar for Removal of Toxic Organic Compounds from Water

Dzyazko, Yuliya; Palchik, O. V.; Ogenko, V. M.; Shtemberg, Leon Y.; Bogomaz, Valerii I.; Protsenko, Sergii A.; Khomenko, Volodymyr; Makeeva, I. S.; Chernysh, Oksana; Dzyazko, O. G.

doi:10.1007/978-3-030-17755-3_14

Cited by 14 publications

(2 citation statements)

References 44 publications

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“…However, activated carbon requires high temperatures of up to 1000 • C for its production and is thus expensive to produce [7]. Biochar is the solid product from pyrolysis reactions and has also been used for the removal of dyes from wastewater and can be thought of as carbon before the activation stage [9][10][11][12][13]. Biochar is produced at moderate to high temperatures (above 500 • C), resulting in a lower surface area in comparison to activated carbon.…”

Section: Introductionmentioning

confidence: 99%

Response Surface Modelling of Methylene Blue Adsorption onto Seaweed, Coconut Shell and Oak Wood Hydrochars

Danso‐Boateng

Fitzsimmons

Ross

et al. 2023

Water

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Adsorption of methylene blue (MB) dye from an aqueous solution onto hydrochars produced from brown seaweed (Fucus Serratus) (FS-HC), coconut shell (CS-HC), and oak wood (Oak-HC) at different temperatures (200–250 °C) was investigated in a batch system. Response surface modelling (RSM) was used to investigate the effect of initial MB concentration (50–300 mg/L), contact time (0–240 min), and solution pH (2–12) on the adsorption process. RSM was also used to model and optimise these parameters for efficient adsorption. Kinetic and isotherms studies were carried out to study the adsorption mechanism onto the hydrochars. It was found that the best adsorbent from the RSM model was FS-HC200, and the optimal conditions for greater MB dye uptake were lower initial MB concentration (50 mg/L), pH 6 and contact time of 84 min; removing >99% of MB. Langmuir and Redlich–Peterson isotherm models fitted the adsorption of MB onto hydrochars prepared at 200 and 250 °C. Freundlich and Redlich–Peterson isotherms were suitable for hydrochars produced at 220 °C. FS-HCs have the highest maximum adsorption capacity of MB of about (8.60–28.57) mg/g calculated from the Langmuir isotherm. The adsorption process for all the hydrochars followed a pseudo-second-order model (R2 = 0.96–1.00), and film diffusion and intraparticle diffusion were the rate-determining steps. Therefore, this work identifies cheap adsorbents from biowaste that are effective for the removal of cationic pollutants from wastewater.

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Section: Introductionmentioning

confidence: 99%

Response Surface Modelling of Methylene Blue Adsorption onto Seaweed, Coconut Shell and Oak Wood Hydrochars

Danso‐Boateng

Fitzsimmons

Ross

et al. 2023

Water

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“…Excellent reviews on these aspects can be found in Soffian et al [3], Adegoke et al [4], Gęca et al [5], Borchardt et al [6], and Ma et al [2]. One such type of carbonaceous material is biochar, which can be produced from biomass waste through hydrothermal carbonization, chemical carbonization, gasification, torrefaction, and pyrolysis [3,[7][8][9]. Sweet chestnut (Castanea sativa) is a deciduous tree of the Fagaceae family, native to humid temperate regions of the Northern Hemisphere and widely distributed throughout Europe.…”

Section: Introductionmentioning

confidence: 99%

From Waste to Resource: Utilizing Sweet Chestnut Waste to Produce Hydrothermal Carbon for Water Decontamination

Edo

Pacheco

Durán‐Valle

et al. 2023

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Carbonaceous materials are a highly appealing class of adsorbents, owing to their exceptional properties, such as high surface area and thermal and chemical stability. These materials have found successful applications in water purification. Sweet chestnut (Castanea sativa) cupules are disposed of as waste. Valorization of these residues is a step forward in terms of circular economy and sustainability. Meanwhile, per- and poly-fluoroalkyl substances (PFASs) pose significant concerns due to their persistence, bioaccumulation, and toxicity, emerging as contaminants of concern for human health and the environment. This study focuses on preparing carbonaceous material by hydrothermal carbonization from chestnut cupules, followed by their use as adsorbents for PFAS removal from polluted water. The cupule waste material was crushed, ground, sieved, and subjected to hydrothermal treatment at temperatures ranging from 180–200 °C to produce hydrothermal carbons. The adsorbents obtained were characterized by various techniques such as nitrogen adsorption isotherm, porosimetry, point of zero charge, Fourier-transform infrared, scanning electron microscopy, and thermal, elemental, and energy dispersive X-ray analyses. Surface area (SBET) values of 42.3–53.2 m2·g−1 were obtained; pHPZC ranged from 3.8 to 4.8. This study also determined the adsorption kinetics and isotherms for removing perfluorooctanoate-contaminated water. The equilibrium was established at 72 h and qe = 1029.47 mg·g−1. To summarize, this research successfully valorized a biomass residue by transforming it into hydrothermal carbon, which was then utilized as an adsorbent for water decontamination.

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Polysaccharides: An Efficient Tool for Fabrication of Carbon Nanomaterials

Dzyazko

Ogenko

2021

Polysaccharides

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Nanoporous Biochar for Removal of Toxic Organic Compounds from Water

Cited by 14 publications

References 44 publications

Response Surface Modelling of Methylene Blue Adsorption onto Seaweed, Coconut Shell and Oak Wood Hydrochars

Response Surface Modelling of Methylene Blue Adsorption onto Seaweed, Coconut Shell and Oak Wood Hydrochars

From Waste to Resource: Utilizing Sweet Chestnut Waste to Produce Hydrothermal Carbon for Water Decontamination

Polysaccharides: An Efficient Tool for Fabrication of Carbon Nanomaterials

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