Biosorption of lead by the brown seaweed Sargassum filipendula -: batch and continuous pilot studies

被引：24

作者：

Vieira, Denise Mesquita ^{[1
]}

Augusto da Costa, Antonio Carlos

Henriques, Cristiane Assumpcaeo ^{[2
]}

Cardoso, Vicelma Luiz ^{[3
]}

de Franca, Francisca Pessoa ^{[1
]}

机构：

[1] Univ Fed Rio de Janeiro, Escola Quim, Dept Engn Bioquim, Ilha Fundao, Rio De Janeiro, Brazil

[2] Univ Estado Rio de Jeneiro, Inst Quim, Programa Posgrad & Engn Quim, Rio De Janeiro, Brazil

[3] Univ Fed Uberlandia, Dept Engn Quim, Minas Gerais, Brazil

来源：

ELECTRONIC JOURNAL OF BIOTECHNOLOGY | 2007年 / 10卷 / 03期

关键词：

biosorption; biosorption equilibrium; continuous system; lead; Sargassum filipendula; MARINE-ALGAE; AQUEOUS-SOLUTIONS; HEAVY-METALS; SP BIOMASS; REMOVAL; COPPER; CADMIUM; EQUILIBRIUM; DESORPTION; MECHANISMS;

D O I：

10.2225/vol10-issue3-fulltext-3

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

The biosorption of lead by the brown alga Sargassum filipendula was studied. pH 4.0 was the optimum value for the biosorption of lead. Isotherms indicated that for solutions containing 0.03 +/- 0.001 up to 3.27 +/- 0.04 mmol/L of lead, 2.0g/L was the optimum biomass concentration. The Langmuir model was fitted to represent the experimental data, and the kinetics of biosorption presented equilibrium in 30 min. The continuous system operated for 56 hrs presenting a 100% binding of ionic lead, which corresponds to an accumulation of 168 g lead, equivalent to a load of 1.7 mmol ionic lead/g Sargassum filipendula. The results that were obtained in a continuous system showed a gradual saturation of the biomass in the reactors.

引用

页码：368 / 375

页数：8

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