Home | My Profile | Contact Us
Research Trends Products  |   order gateway  |   author gateway  |   editor gateway  
Register | Forgot Password

Author Resources
 Author Gateway
 Article submission guidelines

Editor Resources
 Editor/Referee Gateway

 Regional Subscription Agents/Distributors
Current Topics in Toxicology   Volumes    Volume 16 
Study on the ability of fungi isolated from soil to bio-remediate chromium (VI)
Ong Ghim Hock, Lim Sze Sing, Quah Chun Hua, Cheng Wan Hee, Wong Ling Shing
Pages: 83 - 89
Number of pages: 7
Current Topics in Toxicology
Volume 16 

Copyright © 2020 Research Trends. All rights reserved

Chromium (Cr) is widely used in anthropogenic activities and high amount of chromium is released into the environment. There are many conventional remediation methods developed for Cr(VI), but they are costly and lack efficacy. Hence, mycoremediation could be used as an alternative to remediate Cr(VI) in the environment. The objective of this research is to isolate the potential soil fungi for Cr(VI) bioremediation by means of Cr(VI) tolerance test. The collected soil fungi were screened with rose bengal agar (RBA) and cultured on potato dextrose agar (PDA) to obtain pure cultures. The isolated fungi underwent chromium tolerance test in potato dextrose broth (PDB) with potassium dichromate concentrations up to 500 ppm. After 14 days of culturing, the dry weight of mycelium was measured. The ability of the fungi to remove Cr(VI) was determined through spectrophotometry at 540 nm using diphenylcarbazide complexing agent. The result showed that all fungi can tolerate Cr(VI) up to a concentration of 500 ppm and were able to reduce certain percentage of Cr(VI) in PDB medium. Out of 8 fungi species that were isolated, Aspergillus tamarii, Trichoderma atroviride and Aspergillus niger were identified to be potential fungi based on their satisfactory biomass growth which were 0.20 g, 0.18 g and 0.23 g respectively, indicating that they can tolerance high amount of Cr(VI). The percentages of Cr(VI) reduction were 57.3%, 50.2% and 40.8% for the three aforementioned species, respectively. Although A. niger had the highest biomass growth it exhibited the lowest Cr(VI) reduction, which could be due to the biosorption mechanism in A. niger which allows its biomass production even in the presence of Cr(VI). Hence, it could be concluded that A. tamari is the most ideal fungus for remediating Cr(VI).
View Full Article  


Buy this article
Buy this volume
Subscribe to this title
Shopping Cart

Quick Links
Search Products
Browse in Alphabetical Order : Journals
Browse by Subject Classification : Journals

Ordering Information Ordering Information
Downloadable forms Downloadable Forms