Abstract
Abstract In the present investigation, Aspergillus niger isolated from pistachio shell was applied to remove iron impurities from an Iranian kaolin sample. In order to study the effects of initial pH, sucrose and spore concentration on oxalic and citric acid production, and consequently iron dissolution, response surface methodology based on a five-level, three-variable central composite design of experiments was employed. Three models were suggested to predict response values based on the mentioned variables. The most important variables on iron dissolution were initial pH, sucrose and spore concentration, respectively. Also, the highest iron concentration, 311.30 mg/l, was obtained when initial pH was 2, sucrose concentration, 70 g/l, and spore concentration, 35 × 107 spore/l, and represented the removal of 67.4% of the total iron contents of the clay.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
