Fixed bed adsorption of benzene, toluene, and xylene (BTX) contaminants from monocomponent and multicomponent solutions using a commercial organoclay
ARTIGO
Inglês
Benzene, toluene, and xylene (BTX) are potential contaminants of groundwater, and there is a need to improve current remediation techniques, such as adsorption. Different materials can be applied in this process, like organoclays that have affinity for organic compounds. The aim of this work was to...
Benzene, toluene, and xylene (BTX) are potential contaminants of groundwater, and there is a need to improve current remediation techniques, such as adsorption. Different materials can be applied in this process, like organoclays that have affinity for organic compounds. The aim of this work was to study BTX removal from mono-, bi-, and tricomponent solutions in a dynamic fixed bed system filled with organoclay. For the monocomponent system, using a 1.6 mmol/L adsorbate concentration, the useful removal quantities were 0.012 0.030, and 0.140 mmol/g for benzene, toluene, and p-xylene, respectively. Based on the results, the affinity order was p-xylene > toluene > benzene. The multicomponent tests presented similar affinity tendency toward the organoclay. The mathematical model of Yan described the majority of the experimental breakthrough curves better than the model of Thomas. Partition was identified as the prevailing mechanism in BTX uptake, and the main adsorption sites were associated with the nanosized organic phases
CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO - CNPQ
300986/2013-0
COORDENAÇÃO DE APERFEIÇOAMENTO DE PESSOAL DE NÍVEL SUPERIOR - CAPES
Fechado
Fixed bed adsorption of benzene, toluene, and xylene (BTX) contaminants from monocomponent and multicomponent solutions using a commercial organoclay
Fixed bed adsorption of benzene, toluene, and xylene (BTX) contaminants from monocomponent and multicomponent solutions using a commercial organoclay
Fontes
Industrial & engineering chemistry research Vol. 56, no. 21 (May, 2017), p. 6326-6336 |