Idioma:

Copper Biosorption by Biomass of Marine Alga: Study of Equilibrium and Kinetics in Batch System and Adsorption/Desorption Cycles in Fixed Bed Column

Fagundes-Klen, Márcia Regina ; Veit, Márcia Teresinha ; Borba, Carlos Eduardo ; Bergamasco, Rosangela ; de Lima Vaz, Luiz Gustavo ; da Silva, Edson Antonio

Water, air, and soil pollution, 2010-11, Vol.213 (1-4), p.15-26 [Periódico revisado por pares]

Dordrecht: Dordrecht : Springer Netherlands

Texto completo disponível

Citações Citado por

Enviar para

Título:
Copper Biosorption by Biomass of Marine Alga: Study of Equilibrium and Kinetics in Batch System and Adsorption/Desorption Cycles in Fixed Bed Column
Autor: Fagundes-Klen, Márcia Regina ; Veit, Márcia Teresinha ; Borba, Carlos Eduardo ; Bergamasco, Rosangela ; de Lima Vaz, Luiz Gustavo ; da Silva, Edson Antonio
Assuntos: Adsorption ; Algae ; Analysis ; Applied sciences ; Atmospheric Protection/Air Quality Control/Air Pollution ; Biomass ; Bioremediation ; Calcium chloride ; Chemical engineering ; Climate Change/Climate Change Impacts ; Copper ; Earth and Environmental Science ; Efficiency ; Effluents ; Environment ; Environmental monitoring ; Equilibrium ; Exact sciences and technology ; Fixed bed reactors ; Heavy metal content ; Heavy metals ; Hydrochloric acid ; Hydrogeology ; Kinetics ; Pollution ; Sargassum filipendula ; Soil Science & Conservation ; Studies ; Water pollution ; Water Quality/Water Pollution
É parte de: Water, air, and soil pollution, 2010-11, Vol.213 (1-4), p.15-26
Notas: http://dx.doi.org/10.1007/s11270-010-0363-7
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
Descrição: Copper biosorption onto chemically modified biomass of marine alga Sargassum filipendula was investigated in a batch reactor and a fixed bed column. Experiments were carried out in the batch reactor to obtain kinetic and equilibrium data and to assess the copper desorption efficiency of different eluent solutions. The pseudo-first-order, pseudo-second-order, and Langmuir kinetic models were used to correlate kinetic data. The experimental data fitted well to the pseudo first order and Langmuir kinetic models. Langmuir and Freundlich models were applied to describe the equilibrium data obtained at a fixed temperature of 30°C and at pH values of 3.0, 4.0, 5.0, and 6.0. The maximum capacities of copper biosorption onto the algal biomass were 1.43, 1.59, 2.40, and 2.36 mequiv./g at pH 3.0, 4.0, 5.0, and 6.0, respectively. The efficiencies of two eluent solutions (calcium chloride and hydrochloric acid) for copper removal from the biomass were evaluated at different concentrations (0.1, 0.2, 0.5, and 1.0 mol/L). The efficiencies of the calcium chloride solutions varied from 1% to 14%, while efficiencies varying from 95% to 99% were obtained when hydrochloric acid solutions were applied. Three adsorption/desorption cycles were carried out in a fixed bed column using 0.1 mol/L hydrochloric acid as eluent solution. The results showed that an increase in the number of cycles led to a reduction in the adsorption capacity of the alga. The desorbed copper fraction presented no significant variation, remaining around 63% in the three adsorption/desorption cycles.
Editor: Dordrecht: Dordrecht : Springer Netherlands
Idioma: Inglês

Links

View record in Pascal Francis

Voltar para lista de resultados

Realização: Logos de Redes Sociais:

Copper Biosorption by Biomass of Marine Alga: Study of Equilibrium and Kinetics in Batch System and Adsorption/Desorption Cycles in Fixed Bed Column

Fagundes-Klen, Márcia Regina ; Veit, Márcia Teresinha ; Borba, Carlos Eduardo ; Bergamasco, Rosangela ; de Lima Vaz, Luiz Gustavo ; da Silva, Edson Antonio

Dordrecht: Dordrecht : Springer Netherlands

Buscando em bases de dados remotas. Favor aguardar.