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Rice straw as precursor of activated carbons: Activation with ortho-phosphoric acid

Fierro, V. ; Muñiz, G. ; Basta, A.H. ; El-Saied, H. ; Celzard, A.

Journal of hazardous materials, 2010-09, Vol.181 (1), p.27-34 [Revista revisada por pares]

Kidlington: Elsevier B.V

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Rice straw as precursor of activated carbons: Activation with ortho-phosphoric acid
Autor: Fierro, V. ; Muñiz, G. ; Basta, A.H. ; El-Saied, H. ; Celzard, A.
Materias: Activated carbon ; Activation ; Adsorption ; Applied sciences ; Charcoal - chemistry ; Chemical engineering ; Exact sciences and technology ; H 3PO 4 ; Methylene blue ; Methylene Blue - isolation & purification ; Nitrogen - isolation & purification ; Oryza - chemistry ; Oryza sativa ; Phosphoric Acids - chemistry ; Plant Stems ; Pollutants ; Pollution ; Porosity ; Precursors ; Rice ; Rice straw ; Straw ; Surface area ; Surface chemistry ; Temperature ; Water Pollutants, Chemical - isolation & purification
Es parte de: Journal of hazardous materials, 2010-09, Vol.181 (1), p.27-34
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
Descripción: Highly mesoporous activated carbons (ACs) with a mesopore fraction ranging from 42 to 73% were obtained by activation of rice straw (RS) with ortho-phosphoric acid (PA). Due to such a high mesoporosity, these ACs can be successfully used for pollutant removal in aqueous phase. The ACs were prepared at activation temperatures ( T) ranging from 350 to 500 °C, using PA to RS weight ratios ( R) from 0 to 1.6 and activation times from 0 to 2 h. They were characterised by nitrogen adsorption at −196 °C, SEM-EDX, and methylene blue adsorption. RS is a very heterogeneous material with a variable content of mineral matter: using the product of activated carbon yield multiplied by surface area ( C × S BET ) as the performance criterion, the best AC was produced at T = 450 °C and R ≥ 1. These conditions lead to S BET higher than 500 m 2 g −1 and a C × S BET around 270 m 2 g −1.
Editor: Kidlington: Elsevier B.V
Idioma: Inglés

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Rice straw as precursor of activated carbons: Activation with ortho-phosphoric acid

Fierro, V. ; Muñiz, G. ; Basta, A.H. ; El-Saied, H. ; Celzard, A.

Kidlington: Elsevier B.V

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