Biosorption of silver ions by processed Aspergillus niger biomass

The use of fungal biomass to remove silver ions (Ag super(+)) in effluent was studied. The Ag super(+) binding capacity of an alkali treated Aspergillus niger biomass and two other biosorbents was determined for both dilute and concentrated silver solutions. A. niger efficiently sequestered Ag super...

Full description

Saved in:
Bibliographic Details
Published inBiotechnology letters Vol. 17; no. 5; pp. 551 - 556
Main Authors NASEEM AKTHAR, M, SIVARAMA SASTRY, K, MARUTHI MOHAN, P
Format Journal Article
LanguageEnglish
Published Dordrecht Springer 01.05.1995
Subjects
Aspergillus niger
Biohydrometallurgy. Microbial leaching
Biological and medical sciences
Biotechnology
Fundamental and applied biological sciences. Psychology
Industrial applications and implications. Economical aspects
Fusarium oxysporum
Adsorption capacity
Desorption
Silver Ions
Fungi
Adsorption
Aspergillus niger
Lixiviation
Noble metal
Ascomycetes
Neurospora crassa
Fungi Imperfecti
Thallophyta
Online AccessGet full text

Cover

More Information
Summary:The use of fungal biomass to remove silver ions (Ag super(+)) in effluent was studied. The Ag super(+) binding capacity of an alkali treated Aspergillus niger biomass and two other biosorbents was determined for both dilute and concentrated silver solutions. A. niger efficiently sequestered Ag super(+) from both solutions, binding it to a level of as much as 10% dry weight. The bound Ag super(+) could be desorbed by dilute nitric acid, and the biosorbent could be regenerated by washing with calcium/magnesium ion solution. Stoichiometric exchange with the calcium and magnesium ions is the sorption mechanism.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0141-5492
1573-6776
DOI:10.1007/bf00132027