A comparative study of chemical treatment by MgCl2, ZnSO4, ZnCl2, and KOH on physicochemical properties and acetaminophen adsorption performance of biobased porous materials from tree bark residues

Reis, Glaydson S. dos; Guy, Marine; Mathieu, Manon; Jebrane, Mohamed; Lima, Éder C.; Thyrel, Mikael; Dotto, Guilherme Luiz; Larsson, Sylvia H.

doi:10.1016/j.colsurfa.2022.128626

Cited by 69 publications

(28 citation statements)

References 48 publications

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“…The regeneration step of used biochars is needed for assessing the cost-efficacy of adsorbent materials and the likelihood of future applications. The cyclability tests of SB10 using consecutive adsorption/desorption tests were performed according to the methodology described in refs ( 2 ) and ( 34 ), and the results are shown in Figure 9 . Desorption tests were performed using the same procedure as the adsorption tests.…”

Section: Resultsmentioning

confidence: 99%

“…The other samples have broken structures with high roughness, but no holes are observed on their surfacesas a consequence, they presented lower SSA than SB10 and SB13. The holes in SB10 and SB13 are macropores with considerable importance for the solid–liquid contact, allowing passage for pollutants or electrolytes to the smaller pores in the inner structure of the biochars, thereby maximizing the accumulation of pollutants (if used as adsorbent) or charge storage (if used as electrodes) into the cavities. , …”

Section: Resultsmentioning

confidence: 99%

“…The holes in SB10 and SB13 are macropores with considerable importance for the solid−liquid contact, allowing passage for pollutants or electrolytes to the smaller pores in the inner structure of the biochars, thereby maximizing the accumulation of pollutants (if used as adsorbent) or charge storage (if used as electrodes) into the cavities. 34,35 3.4.2. Raman Analysis.…”

Section: Biochar Preparationmentioning

confidence: 99%

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Preparation and Characterization of Pulp and Paper Mill Sludge-Activated Biochars Using Alkaline Activation: A Box–Behnken Design Approach

et al. 2022

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This study utilized pulp and paper mill sludge as a carbon source to produce activated biochar adsorbents. The response surface methodology (RSM) application for predicting and optimizing the activated biochar preparation conditions was investigated. Biochars were prepared based on a Box–Behnken design (BBD) approach with three independent factors (i.e., pyrolysis temperature, holding time, and KOH:biomass ratio), and the responses evaluated were specific surface area (SSA), micropore area ( S micro ), and mesopore area ( S meso ). According to the RSM and BBD analysis, a pyrolysis temperature of 800 °C for 3 h of holding and an impregnation ratio of 1:1 (biomass:KOH) are the optimum conditions for obtaining the highest SSA (885 m 2 g –1 ). Maximized S micro was reached at 800 °C, 1 h and the ratio of 1:1, and for maximizing S meso (569.16 m 2 g –1 ), 800 °C, 2 h and ratio 1:1.5 (445–473 m 2 g –1 ) were employed. The biochars presented different micro- and mesoporosity characteristics depending on pyrolysis conditions. Elemental analysis showed that biochars exhibited high carbon and oxygen content. Raman analysis indicated that all biochars had disordered carbon structures with structural defects, which can boost their properties, e.g., by improving their adsorption performances. The hydrophobicity–hydrophilicity experiments showed very hydrophobic biochar surfaces. The biochars were used as adsorbents for diclofenac and amoxicillin. They presented very high adsorption performances, which could be explained by the pore filling, hydrophobic surface, and π–π electron–donor–acceptor interactions between aromatic rings of both adsorbent and adsorbate. The biochar with the highest surface area (and highest uptake performance) was subjected to regeneration tests, showing that it can be reused multiple times.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Biochar Preparationmentioning

confidence: 99%

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Preparation and Characterization of Pulp and Paper Mill Sludge-Activated Biochars Using Alkaline Activation: A Box–Behnken Design Approach

et al. 2022

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“…Pore size distribution (PSD) and the specific surface area (S BET ) are two fundamental parameters that affect the quality and usefulness of material for the adsorption process [ 27 , 28 , 29 ]. In addition, several studies have addressed the efficiency of an adsorbent as closely linked to specific surface area and pore size distribution [ 15 , 23 ].…”

Section: Resultsmentioning

confidence: 99%

“…The obtained ABC material’s S BET and V total were quantified using N 2 adsorption/desorption isotherms at −196.5 °C using an analyzer (Quantachrome NOVA 4200) [ 28 ].…”

Section: Methodsmentioning

confidence: 99%

Use of Biochar Prepared from the Açaí Seed as Adsorbent for the Uptake of Catechol from Synthetic Effluents

et al. 2022

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This work proposes a facile methodology for producing porous biochar material (ABC) from açaí kernel residue, produced by chemical impregnation with ZnCl2 (1:1) and pyrolysis at 650.0 °C. The characterization was achieved using several techniques, and the biochar material was employed as an adsorbent to remove catechol. The results show that ABC carbon has hydrophilic properties. The specific surface area and total pore volume are 1315 m2·g−1 and 0.7038 cm3·g−1, respectively. FTIR revealed the presence of oxygenated groups, which can influence catechol adsorption. The TGA/DTG indicated that the sample is thermally stable even at 580 °C. Adsorption studies showed that equilibrium was achieved in <50 min and the Avrami kinetic model best fits the experimental data, while Freundlich was observed to be the best-fitted isotherm model. Catechol adsorption on ABC biochar is governed by van der Waals forces and microporous and mesoporous filling mechanisms. The Qmax is 339.5 mg·g−1 (40 °C) with 98.36% removal of simulated effluent, showing that açaí kernel is excellent biomass to prepare good biochar that can be efficiently used to treat real industrial effluents.

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Paracetamol environmental remediation and ecotoxicology: a review

Vieira,

Spode,

Dotto

et al. 2024

Environ Chem Lett

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A comparative study of chemical treatment by MgCl2, ZnSO4, ZnCl2, and KOH on physicochemical properties and acetaminophen adsorption performance of biobased porous materials from tree bark residues

Cited by 69 publications

References 48 publications

Preparation and Characterization of Pulp and Paper Mill Sludge-Activated Biochars Using Alkaline Activation: A Box–Behnken Design Approach

Preparation and Characterization of Pulp and Paper Mill Sludge-Activated Biochars Using Alkaline Activation: A Box–Behnken Design Approach

Use of Biochar Prepared from the Açaí Seed as Adsorbent for the Uptake of Catechol from Synthetic Effluents

Paracetamol environmental remediation and ecotoxicology: a review

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