Biochar derived from traditional Chinese medicine residues: An efficient adsorbent for heavy metal Pb(II)

Arabian Journal of Chemistry, Journal Year: 2024, Volume and Issue: 17(3), P. 105606 - 105606

Published: Jan. 4, 2024

Biochar (BC) is widely used in the remediation of soil and wastewater polluted by heavy metals, but there are few reports on characteristics biochar derived via pyrolysis from different traditional Chinese medicine residues (TCMRs). In this study, biochars were prepared slow five common residues, namely, Salvia miltiorrhiza (DNS), Ligusticum striatum (CX), Angelica sinensis (DG), Codonopsis pilosula (DGS), Astragalus membranaceus (HQ). The systematically investigated determining their physicochemical properties using characterization techniques. Spearman correlation matrix between factors was to examine relationships biochars. Batch adsorption experiments carried out investigate Pb(II) mechanisms involved. results showed that performance related type its pharmaceutical residue. produced materials with higher lignin content a better metal Pb(II). All alkaline, yields ranging 29.30–38.65%, main structure comprised mesopores macropores. FT-IR Boehm revealed various TCMR contained comparable functional groups, varied. XRD TEM show all amorphous crystalline structure, surface dominated cellulose crystals graphitic carbon. O/C ratio (<0.2) H/C (<0.6) suggested it had desirable half-life. TGA confirmed stability environment. mineral confirm enrichment during biomass pyrolysis.The biochars' kinetics followed pseudo-second-order models (R2 > 0.99), isotherms consistent Langmuir model indicating monolayer chemisorption process. samples exhibited varying capacities for Pb(II), highest capacity observed BDNS (36.42 mg/g). mechanism mainly involved precipitation, complexation oxygen-containing ion exchange. This study indicates herbal exhibit promising potential adsorbing suggesting production as viable method recycling residues.

Language: Английский

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Study on the Adsorption Performance of Carbon-Magnetic Modified Sepiolite Nanocomposite for Sb(V), Cd(II), Pb(II), and Zn(II): Optimal Conditions, Mechanisms, and Practical Applications in Mining Areas

Journal of Hazardous Materials, Journal Year: 2025, Volume and Issue: 487, P. 137129 - 137129

Published: Jan. 7, 2025

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Computational and Kinetics analysis of lead ions removal from industrial wastewater through natural bone powder

Journal of the Taiwan Institute of Chemical Engineers, Journal Year: 2025, Volume and Issue: 170, P. 106016 - 106016

Published: Feb. 17, 2025

Language: Английский

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Enhancing adsorption efficiency for environmentally-friendly removal of As(V) and Pb(II) using a biochar-iron oxide composite

Applied Surface Science, Journal Year: 2024, Volume and Issue: 667, P. 160348 - 160348

Published: May 21, 2024

In this study, we aimed to develop an absorbent for efficient removal of heavy metals. We developed a composite (BC-IOx) using biochar (BC) obtained by carbonizing rice hull, type biomass, and iron(III) nitrate nonhydrate (IO). The bonding strength between BC IO was increased through ultrasonication with high energy at 25 ℃ 2-h heat treatment process 350 ℃. Brunauer-Emmett-Teller analysis showed that BC-IOx had specific surface area, which proportional iron loading provided abundance active metal adsorption sites. This effectively removed Pb(II) As(V). addition BC-IO3 Pb(II)-contaminated water 120 min absorption capacity 90.21 mg/g from 18.12 unmodified BC. As(V) 8.33 65.34 BC-IO10. addition, the potential mechanism discussed detailed chemical physical analyses. synthesis oxide can inspire cost-effective straightforward production absorbents be utilized on large scale.

Language: Английский

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Biomass-derived utilization adsorbent induced by inherent structure of recycled eggplant waste for sustainable removal of heavy metal ion in practical water

Chemical Engineering Science, Journal Year: 2025, Volume and Issue: unknown, P. 121223 - 121223

Published: Jan. 1, 2025

Language: Английский

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Adsorption of Pb(II) from aqueous environment on artificially synthesized mordenite and its biochar composite

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 497, P. 154700 - 154700

Published: Aug. 10, 2024

Language: Английский

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Mechanisms and valorization of selective adsorption of Sb(III) by amino-functionalized lignin-based porous biochar

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: unknown, P. 156262 - 156262

Published: Sept. 1, 2024

Language: Английский

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Adsorption characteristics and mechanism insights of K2FeO4 coupling with ZnCl2-assisted modified functionalized biochar for Pb (II) in wastewater

Journal of environmental chemical engineering, Journal Year: 2024, Volume and Issue: unknown, P. 115279 - 115279

Published: Dec. 1, 2024

Language: Английский

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Z-scheme γ-Fe2O3/g-C3N4 in photo-Fenton reaction for oxytetracycline degradation: Mechanism study and DFT calculation

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 354, P. 129185 - 129185

Published: Aug. 14, 2024

Language: Английский

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An effective way to utilize solid waste resources: The application of modified fly ash in removing Cu2+ and Pb2+ in wastewater

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 350, P. 127948 - 127948

Published: May 14, 2024

Language: Английский

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