title: The biosorption of heavy metals from aqueous solution by Spirogyra and Cladophora filamentous macroalgae.
abstract: The aim of this research was to develop a low cost adsorbent for wastewater treatment. The prime objective of this study was to search for suitable freshwater filamentous algae that have a high heavy metal ion removal capability. This study evaluated the biosorption capacity from aqueous solutions of the green algae species, Spirogyra and Cladophora, for lead (Pb(II)) and copper (Cu(II)). In comparing the analysis of the Langmuir and Freundlich isotherm models, the adsorption of Pb(II) and Cu(II) by these two types of biosorbents showed a better fit with the Langmuir isotherm model. In the adsorption of heavy metal ions by these two types of biosorbents, chemical and physical adsorption of particle surfaces was perhaps more significant than diffusion and adsorption between particles. Continuous adsorption-desorption experiments discovered that both types of biomass were excellent biosorbents with potential for further development.
authors.affiliation: Department of Environmental Engineering, Kun Shan University, Yung-Kang City, Tainan Hsien 71003, Taiwan, ROC.
authors.forename: Yi-Chao
authors.initials: YC
authors.lastname: Lee
authors.forename: Shui-Ping
authors.initials: SP
authors.lastname: Chang
mesh_terms: D000327:Adsorption; D001673:Biodegradation, Environmental; D018533:Biomass; D003300:Copper / Q000302:isolation & purification* / Q000378:metabolism; D006863:Hydrogen-Ion Concentration; D007477:Ions; D007854:Lead / Q000302:isolation & purification* / Q000378:metabolism; D011208:Powders; D012624:Seaweed / Q000254:growth & development / Q000378:metabolism*; D012996:Solutions; D058131:Spirogyra / Q000254:growth & development / Q000378:metabolism*; D013696:Temperature; D013997:Time Factors
chemical_list: D007477:Ions; D011208:Powders; D012996:Solutions; D007854:Lead; D003300:Copper