Activated carbon from bamboo waste modified with iron and its application in the study of the adsorption of arsenite and arsenate

• Autorzy: Juan Moreno-Piraján , Liliana Giraldo
• Języki publikacji: EN

Abstrakty

EN

Activated carbon obtained from bamboo waste was synthesised and modified with iron (BAC-Fe) and used for the removal of arsenic from aqueous solutions. Two different adsorption models were used for analysing the data. The adsorption capacities were determined for BAC-arsenite, BAC-Fe-arsenite, BAC-arsenate and BAC-Fe-arsenate, with a qmax (µg g−1) of 14.89, 19.19, 22.32 and 27.32 respectively. Adsorption capacity varied as a function of pH and modifications to the sorbent. Adsorption isotherms from an aqueous solution of arsenite and arsenates on activated carbons were determined. These adsorption isotherms were consistent with the Langmuir and Freundlich adsorption models. Adsorption kinetics followed a pseudo-first order rate equation, as did the kinetics for BAC-Fe-arsenite and BAC-Fe-arsenate adsorption. [...]

Słowa kluczowe

EN

Activated carbon; Bamboo waste; Isotherms; Freundlich; Langmuir

• Czasopismo: Open Chemistry
• Rocznik: 2013
• Tom: 11
• Numer: 2
• Strony: 160-170

Daty

wydano

2013-02-01

online

2012-11-29

Twórcy

autor

Juan Moreno-Piraján

• Chemistry Department, Sciences Faculty, Andes University, Research Group in Porous Solids and Calorimetry, Bogotá, 111711, Colombia,

autor

Liliana Giraldo

• Chemistry Department, National University of Colombia, Bogotá, 111711, Colombia

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Identyfikatory

DOI

10.2478/s11532-012-0138-7