Biosorption of mercury from aqueous solution by Ulva lactuca biomass.
The mercury biosorption onto non-living protonated biomass of Ulva lactuca, as an alternative method for mercury removal from aqueous solutions, was investigated. Batch equilibrium tests showed that at pH 3.5, 5.5 and 7 the maxima of mercury uptake values, according to Langmuir adsorption isotherm, were 27.24, 84.74 and 149.25 mg/g, respectively. The ability of Ulva lactuca biomass to adsorb mercury in fixed-bed column, was investigated as well. The influence of column bed height, flow rate and effluent initial concentration of metal was studied. The adsorbed metal ions were easily desorbed from the algal biomass with 0.3 N H(2)SO(4) solution. After acid desorption and regeneration with distilled water, the biomass could be reused for other biosorption assays with similar performances.
Zeroual
Youssef
Y
Laboratory of Microbiology, Biotechnology and Environment, Faculty of Sciences Ai;n chock, University Hassan II-Ai;n chock, Km 8 Route d'El Jadida, B.P. 5366 Mâarif, Casablanca, Morocco.
Moutaouakkil
Adnane
A
Dzairi
Fatima Zohra
FZ
Talbi
Mohamed
M
Chung
Park Ung
PU
Lee
Kangmin
K
Blaghen
Mohamed
M
D000327:Adsorption; D018533:Biomass; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D008628:Mercury / Q000737:chemistry / Q000302:isolation & purification*; D013464:Sulfuric Acids / Q000737:chemistry; D044445:Ulva / Q000737:chemistry*; D014873:Water Pollutants / Q000302:isolation & purification*; D018508:Water Purification / Q000379:methods*
D013464:Sulfuric Acids; D014873:Water Pollutants; D008628:Mercury; C033158:sulfuric acid