Magnesium Bicarbonate–Walnut Shell Dual-Template Synthesis of Multifunctional Layered Porous Carbon for Enhanced Adsorption of Aqueous Chlorinated Organic Compounds DOI Open Access

Juanxue Kang,

Xiaoli Bai,

Junyang Leng

et al.

International Journal of Molecular Sciences, Journal Year: 2024, Volume and Issue: 25(21), P. 11761 - 11761

Published: Nov. 1, 2024

Chloride ions readily react with organic matter and other ions, resulting in the formation of disinfection by-products (DBPs) that exhibit heightened levels toxicity, carcinogenicity, mutagenicity. This study creatively employed waste walnut shells as self-templates low-cost magnesium bicarbonate a rigid template to successfully synthesize multifunctional porous carbon derived from shells. Employing series characterization techniques, it was ascertained material (WSC/Mg) synthesized via dual-template method exhibited distinct layered microscopic surface structure, predominance C O elements on surface. The displayed high degree graphitization, significant specific area, abundant oxygen-containing functional groups. incorporation hard improved structure shell carbon, enhancement mass transfer efficiency for target product adsorbent substantial improvement removal efficiency. In comparison shell-derived using only self-templating, WSC/Mg 17.26-fold increase adsorption capacity 2,4-dichlorophenol. Furthermore, even after four adsorption-desorption cycles, WSC/Mg-12 maintained an above 90%. It is remarkable demonstrated exceptional resistance interference natural pH variations. Moreover, adsorbed saturated effectively treated real coke wastewater, 80% color rate, 20% COD 15% ammonia nitrogen rate. conclusion, this presents innovative approach cost-effective versatile materials extensive applications water environment purification biomass utilization.

Language: Английский

Endogenous iron-enriched biochar derived from steel mill wastewater sludge for tetracycline removal: Heavy metals stabilization, adsorption performance and mechanism DOI
Lu Zhou,

Guanhao Zhang,

Yulin Zeng

et al.

Chemosphere, Journal Year: 2024, Volume and Issue: 359, P. 142263 - 142263

Published: May 6, 2024

Language: Английский

Citations

12
Casuarina equisetifolia-Derived Mesoporous Carbon for Adsorptive Removal of Phenolic Pollutants: Insights into Optimization, Isotherm, Kinetics, Thermodynamics, and Mechanism DOI Creative Commons
Praveengouda Patil,

Jithu George Valiaparampil,

Jaahnavi Urs

et al.

ACS Omega, Journal Year: 2025, Volume and Issue: 10(9), P. 8935 - 8950

Published: Feb. 28, 2025

Herein, Casuarina equisetifolia-derived activated carbon was developed by pyrolysis at a low temperature (773 K). The derived adsorbent characterized as an extremely porous and amorphous with surface area of 1007 m2/g. point zero charge (pHPZC) obtained 3.89. reported used for the remediation phenolic pollutants [phenol 2,4-dichlorophenol (2,4-DCP)]. To begin with, optimization parameters demonstrated that pH 2 293 K had significant impacts on adsorption both pollutants. isotherm studies revealed Freundlich (R2 = 0.9956) Langmuir 0.9866) models better fitted phenol 2,4-DCP, respectively. study also exceptionally elevated monolayer efficiency 364.62 382.03 mg/g This significantly greater would aid in elimination pollutants, especially coal processing industries, which are major contributors to discharge. Furthermore, kinetic chemisorption mechanism dominated R2 > 0.999 all concentrations ranging between 25 200 mg/L. In addition, thermodynamic behavior 2,4-DCP exothermic (ΔH < −26.70 kJ/mol) feasible type adsorption. value isosteric heat corroborated physisorption dominating entire process ΔHx kJ/mol. aspect phenol/2,4-DCP suggests removal followed combination physical chemical adsorption, accompanied pore diffusion electrostatic attraction coupled π–π interaction hydrogen bonding. equisetifolia (CEAC) performed well four cycles adsorption–desorption. broader significance these findings yield sustainable production carbon, is easily available carbon-rich source, additionally offering cost-effective alternative solution/replacement chlorinated phenols from synthetic wastewater.

Language: Английский

Citations

0
Competitive adsorption studies for removal of phenolic pollutants using Cassia fistula-derived activated carbon DOI Creative Commons
Praveengouda Patil, Gautham Jeppu,

Swathi Nayak

et al.

Chemical Papers, Journal Year: 2025, Volume and Issue: unknown

Published: April 16, 2025

Language: Английский

Citations

0
Weak static magnetic fields facilitated highly efficient 2,4,6-trichlorophenol removal by sulfurized nanoscale zero-valent iron supported on biochar (BC-SNZVI) at neutral pH DOI
Ying Wang,

Yanqiang Tang,

Wei Jiang

et al.

Journal of Environmental Management, Journal Year: 2024, Volume and Issue: 366, P. 121805 - 121805

Published: July 16, 2024

Language: Английский

Citations

2
Magnesium Bicarbonate–Walnut Shell Dual-Template Synthesis of Multifunctional Layered Porous Carbon for Enhanced Adsorption of Aqueous Chlorinated Organic Compounds DOI Open Access

Juanxue Kang,

Xiaoli Bai,

Junyang Leng

et al.

International Journal of Molecular Sciences, Journal Year: 2024, Volume and Issue: 25(21), P. 11761 - 11761

Published: Nov. 1, 2024

Chloride ions readily react with organic matter and other ions, resulting in the formation of disinfection by-products (DBPs) that exhibit heightened levels toxicity, carcinogenicity, mutagenicity. This study creatively employed waste walnut shells as self-templates low-cost magnesium bicarbonate a rigid template to successfully synthesize multifunctional porous carbon derived from shells. Employing series characterization techniques, it was ascertained material (WSC/Mg) synthesized via dual-template method exhibited distinct layered microscopic surface structure, predominance C O elements on surface. The displayed high degree graphitization, significant specific area, abundant oxygen-containing functional groups. incorporation hard improved structure shell carbon, enhancement mass transfer efficiency for target product adsorbent substantial improvement removal efficiency. In comparison shell-derived using only self-templating, WSC/Mg 17.26-fold increase adsorption capacity 2,4-dichlorophenol. Furthermore, even after four adsorption-desorption cycles, WSC/Mg-12 maintained an above 90%. It is remarkable demonstrated exceptional resistance interference natural pH variations. Moreover, adsorbed saturated effectively treated real coke wastewater, 80% color rate, 20% COD 15% ammonia nitrogen rate. conclusion, this presents innovative approach cost-effective versatile materials extensive applications water environment purification biomass utilization.

Language: Английский

Citations

2