Open AccessBiosorption of cadmium using the fungus Aspergillus niger
Author(s) -
Luiz Marinho Júnior,
Gorete Ribeiro de Macêdo,
M. M. L. Duarte,
E.P. Silva,
Ana Katerine de Carvalho Lima Lobato
Publication year - 2003
Publication title -
brazilian journal of chemical engineering/brazilian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.313
H-Index - 52
eISSN - 1678-4383
pISSN - 0104-6632
DOI - 10.1590/s0104-66322003000300003
Subject(s) - biosorption , aspergillus niger , cadmium , biomass (ecology) , sorption , chemistry , metal , pulp and paper industry , environmental chemistry , nuclear chemistry , environmental engineering , environmental science , food science , adsorption , biology , agronomy , organic chemistry , engineering
Sorption experiments using the Aspergillus niger fungus for cadmium removal were carried out to study the factors influencing and optimizing the biosorption of this metal. The effects of pH, time, biomass concentration, and initial concentration of the heavy metal on the rate of metallic biosorption were examined. An experimental design was also used to determine the values of the under study variables that provided the greatest biosorption efficiency. A technique for biomass recovery was also developed with the objective of determining the capacity of the regenerated biomass to biosorb the metals in solution. This research proved that with a pH of 4.75, a biomass concentration of 0.7 g/L, and a heavy metal concentration varying between 5 and 10 mg/L a biosorption process of biosorption with Aspergillus niger could be successfully used for heavy metal removal from oil field water in the oil industry