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Removal of lead from aqueous solutions by Penicillium biomass

Journal Article · · Biotechnology and Bioengineering; (United States)
; ;  [1];  [2]
  1. Chengdu Univ. of Science and Technology, Sichuan (China). Dept. of Chemical Engineering
  2. McGill Univ., Montreal (Canada). Dept. of Chemical Engineering
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The removal of lead ions from aqueous solutions by adsorption on nonliving Penicillium chrysogenum biomass was studied. Biosorption of the Pb[sup +2] ion was strongly affected by pH. Within a pH range of 4 to 5, the saturated sorption uptake of Pb[sup +2] was 116 mg/g dry biomass, higher than that of activated charcoal and some other microorganisms. At pH 4.5, P. chrysogenum biomass exhibited selectivity for Pb[sup +2] over other metal ions such as Cd[sup +2], Cu[sup +2], Zn [sup +2], and As[sub +3]. Sorption preference for metals decreased in the following order: Pb > Cd > Cu > Zn > As. The sorption uptake of Pb[sup +2] remained unchanged in the presence of Cu[sup +2] and As [sup +3], it decreased in the presence of Zn[sup +2], and increased in the presence of Cd[sup +2].

OSTI ID:
6148581
Journal Information:
Biotechnology and Bioengineering; (United States), Journal Name: Biotechnology and Bioengineering; (United States) Vol. 42:6; ISSN BIBIAU; ISSN 0006-3592
Country of Publication:
United States
Language:
English

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Related Subjects

54 ENVIRONMENTAL SCIENCES
540320* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (1990-)
560300 -- Chemicals Metabolism & Toxicology
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ADSORPTION
AQUEOUS SOLUTIONS
ARSENIC
CADMIUM
CLEANING
COPPER
DECONTAMINATION
DISPERSIONS
ELEMENTS
EUMYCOTA
FUNGI
HYDROGEN COMPOUNDS
LEAD
LIQUID WASTES
MANAGEMENT
MATERIALS RECOVERY
METALS
MIXTURES
OXYGEN COMPOUNDS
PENICILLIUM
PH VALUE
PLANTS
POLLUTION
PROCESSING
SEMIMETALS
SOLUTIONS
SORPTION
SORPTIVE PROPERTIES
SURFACE PROPERTIES
TRANSITION ELEMENTS
WASTE MANAGEMENT
WASTE PROCESSING
WASTE WATER
WASTES
WATER
WATER POLLUTION
ZINC