Kinetics, adsorption isotherms, thermodynamics, and desorption studies of cadmium removal from aqueous solutions using bamboo sawdust/rice husk biochar

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dc.contributor.authorKwikima, Muhajir Mussa
dc.contributor.authorChebude, Yonas
dc.contributor.authorMeshesha, Beteley Tekola
dc.date.accessioned2023-05-22T11:06:37Z
dc.date.available2023-05-22T11:06:37Z
dc.date.issued2022
dc.descriptionAbstract. Full Text Article is available at https://link.springer.com/article/10.1007/s13399-022-03472-3en_US
dc.description.abstractThe adsorption mechanisms of Cd2+ removal from synthetic water using blended biochar from bamboo sawdust (BSD) and rice husk (RH) feedstocks at BSD/RH ratios 1:1, 1:3, and 3:1 were investigated. The equilibrium isotherms (Langmuir, Freundlich, Temkin, and Dubinin–Radushkevich) and kinetics (pseudo-first order, pseudo-second order, Elovich, and intra-particle diffusion kinetic adsorption models) and thermodynamics were examined. The BSD/RH biochar ratio of 1:1, 1:3, and 3:1 produced the Cd2+ removal of 99.2%, 98.3%, and 97.24% respectively. The adsorption investigation found insignificant differences in removal efficiency across the biochar ratio combinations. Furthermore, the equilibrium isotherm analyses for the BSD/RH ratio of 3:1 and 1:1 are best described by in favor of the Freundlich model, whereas for BSD/RH biochar ratio of 1:3 best matched the Langmuir model. The thermodynamic study revealed that the process is non-spontaneous, endothermic, and dominated by the physisorption mechanism. Generally, physisorption was discovered to be the dominant process controlling the Cd2+ removal from the solution.en_US
dc.identifier.citationKwikima, M. M., Chebude, Y., & Meshesha, B. T. (2022). Kinetics, adsorption isotherms, thermodynamics, and desorption studies of cadmium removal from aqueous solutions using bamboo sawdust/rice husk biochar. Biomass Conversion and Biorefinery, 1-13.en_US
dc.identifier.otherURL: https://link.springer.com/article/10.1007/s13399-022-03472-3
dc.identifier.urihttp://hdl.handle.net/20.500.12661/3774
dc.language.isoenen_US
dc.publisherSpringeren_US
dc.subjectKineticsen_US
dc.subjectAdsorption isothermsen_US
dc.subjectThermodynamicsen_US
dc.subjectAqueous solutionsen_US
dc.subjectBamboo sawdusten_US
dc.subjectBlended biocharen_US
dc.subjectRice husk biocharen_US
dc.subjectSynthetic wateren_US
dc.subjectEquilibrium isothermsen_US
dc.subjectRice Husken_US
dc.subjectRHen_US
dc.subjectAdsorption mechanismsen_US
dc.subjectCadmium removalen_US
dc.titleKinetics, adsorption isotherms, thermodynamics, and desorption studies of cadmium removal from aqueous solutions using bamboo sawdust/rice husk biocharen_US
dc.typeArticleen_US
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