Heavy metal biosorption sites in <i>Penicillium cyclopium</i>

Abstract

ABSTRACT:The biomass of Penicillium cyclopium was subjected to chemical treatment to study the role of the

Removal of Cu(II), Co(II) and Fe(III) Ions from Ternary Solution by Free and Entrapped in PVA-Hydrogel Biomass ofPenicillium Cyclopium

“…The first phase was about 15 -20 min, which is longer than the 3 -5 min observed in the case of immobilized biosorbent. As it has been reported earlier (10,20), the functional groups on the biosorbent may be modified after immobilization, and hence the role of the HO-groups in the process of metal ions biosorption may be increased. Thus, PVA-immobilized biomass had higher surface area than free cells and shorter time was needed for the first phase of the process.…”

Mechanism of palladium(ii) biosorption by Providencia vermicola

“…Esterication of the hydroxyl groups: 5 g of raw biomass was suspended in 30 mL mixture of pyridine and acetic anhydride (12 to 88 volume ratio) and heated for 2 h at 60 C. The treatment was widely applied for determination of hydroxyl content of carboxylic acids. 16 The biomass samples obtained were labeled as 'd'. The reaction occurs as follows:…”

Removal of trace element by isolates of Aspergillus brasiliensis EPAMIG 0084 and Penicillium citrinum EPAMIG 0086 in biofilters

“…Removal was considered strongly dependent on pH, on the amount of biomass and on the concentration of Cu ions in the solutions. The biosorption process was fast and, in the first 5 min, up to 75% of the total Cu ions were deposited on the surface of the fungus under study (Tsekova et al 2006).…”