Carboxyl-rich carbon microspheres prepared from pentosan with high adsorption capacity for heavy metal ions
Source abstract
Abstract
Abstract Carboxyl-rich carbon microspheres (CSp) were synthesized through hydrothermal carbonization of hemicellulose-derived by-products of pulp refining with no other additives. Characterization of the products revealed that CSp rich in oxygen-containing groups with good dispersion and thermal stability can be obtained. Because of the abundant surface oxygen-containing functional groups, the prepared CSp exhibited excellent adsorption capacities for Pb(II) and Cd(II) from aqueous solution, with highest adsorption capacities of 380.1 and 100.8 mg/g for Pb(II) and Cd(II), respectively. Following metal ion adsorption, the content of carboxyl groups decreased from 39.1% to 6.8% for CSp–Pb and to 9.8% for CSp–Cd. Freundlich and Langmuir model isotherms were used to determine the equilibrium uptakes of the two heavy metal ions, revealing that both Pb(II) and Cd(II) were chemically adsorbed as multilayers on CSp.
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Research context
OpenAlex topics: Adsorption and biosorption for pollutant removal · Graphene research and applications · Supercapacitor Materials and Fabrication
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References (34)
Show source-provided references
1. Removal of lead and cadmium ions from aqueous solution by adsorption onto micro-particles of dry plants10.1016/j.colsurfb.2007.06.024 ↗
2. Hybrid ion exchange – pressure driven membrane processes in water treatment: a review10.1016/j.seppur.2013.05.052 ↗
3. Treatment of radioactive water by phosphate precipitation10.1021/ie50499a023 ↗
4. Dong, amino-functionalized magnetic mesoporous microspheres with good adsorption properties10.1016/j.materresbull.2013.08.063 ↗
5. Role of surface chemistry in adsorption of phenol on activated carbons10.1016/S0021-9797(03)00420-X ↗
6. Hydrothermal synthesis of imidazole functionalized carbon spheres and their application in catalysis10.1016/j.cattod.2009.05.003 ↗
7. CaO supported on porous carbon as highly efficient heterogeneous catalysts for transesterification of triacetin with methanol10.1021/ef100419m ↗
8. Catalytic performance of acid-treated multi-walled carbon nanotube-supported platinum catalyst for PEM fuel cells10.1016/j.materresbull.2012.04.057 ↗
9. Competitive adsorption of Pb2+, Cu2+ and Cd2+ ions from aqueous solutions by multiwalled carbon nanotubes10.1016/S0008-6223(03)00392-0 ↗
10. Colloidal carbon spheres and their core/shell structures with noble-metal nanoparticles10.1002/anie.200352386 ↗
11. Carbon spheres/activated carbon composite materials with high Cr (VI) adsorption capacity prepared by a hydrothermal method10.1016/j.jhazmat.2009.08.086 ↗
12. Hydrothermal carbon from biomass: a comparison of the local structure from poly-to monosaccharides and pentoses/hexoses10.1039/b807009a ↗
13. Hydrothermal carbonization: fate of inorganics10.1016/j.biombioe.2012.12.004 ↗
14. Thermal treatments of activated carbon fibres using a microwave furnace10.1016/S1387-1811(01)00384-5 ↗
15. Hydrothermal synthesis, characterization, and KOH activation of carbon spheres from glucose10.1016/j.carres.2011.03.020 ↗
16. Hydrothermal carbonization (HTC) of lignocellulosic biomass10.1021/ef101745n ↗
17. Thermochemical biofuel production in hydrothermal media: a review of sub- and supercritical water technologies10.1039/b810100k ↗
18. A novel activated carbon for supercapacitors10.1016/j.materresbull.2011.12.028 ↗
19. The production of carbon materials by hydrothermal carbonization of cellulose10.1016/j.carbon.2009.04.026 ↗
20. Hydrothermal carbons from hemicellulose-derived aqueous hydrolysis products as electrode materials for supercapacitors
21. Hydrothermal carbonization of biomass: a summary and discussion of chemical mechanisms for process engineering10.1002/bbb.198 ↗
22. Characterization of products from hydrothermal treatments of cellulose10.1016/j.energy.2012.03.023 ↗
23. Coal analysis using thermogravimetry10.1016/0040-6031(84)87013-6 ↗
24. Role of surface chemistry in adsorption of phenol on activated carbons10.1016/S0021-9797(03)00420-X ↗
25. A carbon foam with a bimodal micro-mesoporous structure prepared from larch sawdust for the gas-phase toluene adsorption10.1016/j.materresbull.2013.02.069 ↗
26. Carboxylate-rich carbonaceous materials via one-step hydrothermal carbonization of glucose in the presence of acrylic acid10.1021/cm802141h ↗
27. Sorption of Cu2+ and Cd2+ onto acid- and base-pretreated granular activated carbon and activated carbon fiber samples10.1016/j.jiec.2007.08.007 ↗
28. Stydy of the contributions of non-specific and specific interactions during fluoxetine adsorption onto activated carbons
29. Sorption of lead, mercury and cadmium ions in multi-component system using carbon aerogel as adsorbent10.1016/j.jhazmat.2007.08.082 ↗
30. Coupled soft-template/hydrothermal process synthesis of mesoporous carbon spheres from liquefied larchsawdust10.1016/j.matlet.2013.05.115 ↗
31. Sorption of Cd(Ⅱ) and Pb(Ⅱ) from aqueous by a low-rank coal (leonardite)10.1016/j.seppur.2005.02.006 ↗
32. Rubber die adsorption in lusungen
33. The adsorption of gases on plane surface of glass, mica, and platinum10.1021/ja02242a004 ↗
34. third ed