Open AccessBiosorption of copper and zinc by Cymodocea nodosa
Author(s) -
Sánchez Antonio,
Ballester Antonio,
Blázquez Marı́a Luisa,
González Felisa,
Muñoz Jesus,
Hammaini Adil
Publication year - 1999
Publication title -
fems microbiology reviews
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.91
H-Index - 212
eISSN - 1574-6976
pISSN - 0168-6445
DOI - 10.1111/j.1574-6976.1999.tb00411.x
Subject(s) - biosorption , sorption , adsorption , zinc , copper , langmuir adsorption model , aqueous solution , metal , langmuir equation , metal ions in aqueous solution , nuclear chemistry , chemistry , inorganic chemistry , chromatography , materials science , organic chemistry
Abstract The adsorption of the two metal ions Cu and Zn in a single‐component system by Cymodocea nodosa , a brown alga, under different pH conditions was investigated. The solution pH significantly affected the exhibited uptake, being maximum at a pH value of 4.5. Multi‐component mixture biosorption in aqueous solutions is also reported. A comparison was made between the single‐component saturation uptake and the multi‐component uptakes. To evaluate the two‐metal sorption system performance, simple isotherm curves had to be replaced by three‐dimensional sorption isotherm surfaces. In order to describe the isotherm surfaces mathematically, three Langmuir‐type models were evaluated. The isotherms indicate a competitive uptake with Cu being preferentially adsorbed. In addition, different tests were carried out to compare the process efficiency working continuously in small columns.