Application of Live, Dead, and Dried Biomasses of Aspergillus Versicolor for Cadmium Biotreatment
Journal Title: Journal of Human Environment and Health Promotion - Year 2016, Vol 1, Issue 2
Abstract
Background: Various industries produce and discharge wastes containing different heavy metals into the environment. Apart from using living biomass, dead and dried biomasses have been introduced as a new field of biotreatment technology. Method: The cadmium (Cd) (II) removal characteristics of live (growing), dead (autoclaved), and oven-dried biomasses of Aspergillus versicolor were examined as a function of initial pH, contact time, and initial Cd concentration. Result: Maximum bioaccumulation of Cd for live biomass [11.63 (mg g−¹)] occurred at an optimal pH of 4 and incubation time of 4 days. Themaximum biosorption of 27.56 (mg g−¹) for dead biomass occurred at 1.5 h and at a pH of 4. The maximum biosorption [18.08 (mg g−¹)] with dried biomass was reached at an equilibrium time of 3 h at a pH of 6. Conclusion: The present study confirmed that heat treatment promoted the removal capacity of fungi. Cd removal was increased by decreasing the pH in live and dead-mode experiments. Inversely, Cd removal was increased with increasing pH for the dried biomass of A. versicolor. Varying responses to environmental conditions (pH and contact time) clearly proved the different removal mechanisms used by three biomasses of A. versicolor. Higher Cd concentration increased the removal ability of three types of biomasses. The results indicated that all biomasses of A. versicolor used in this study, particularly dead biomass, are a suitable biosorbent for the removal of Cd (II) ions from aqueous solution.
Authors and Affiliations
Negin Soleimani*, Mehran Mohammadian Fazli, Ali Ramazani, Mohammad Reza Mehrasbi
Keywords
Related Articles
- EP ID EP183071
- DOI -
- Views 128
- Downloads 0
Chemical Quality of the Leading Bottled Water Brands Distributed in Gorgan, Iran
Background: With the growing use of bottled water, the continuous research and monitoring of the quality of these products are crucial. The present study aimed to assess the chemical quality of the bottled water distribu...
Strengthening of Community Action for the Reduction of Motorcycle Accidents in Dezful, Iran
Background: Road traffic accidents are considered to be a leading cause of injuries across the world. Human factors have been reported to play a key role in road traffic accidents. The present study aimed to explore the...
Can Educational Intervention be Useful in Improvement of Body Posture and Work Related Musculoskeletal Symptoms?
Background: Poor postures are an important risk factor for work-related musculoskeletal disorders. The present study aimed to assess the impact of educational interventions on the correction of body posture and reducing...
Evaluation of Cancer Risk of Heavy Metals in the Air of a High Traffic Urban Region and Its Source Identification
Background: Sampling was conducted on particles smaller than ten microns (PM10) in a high-traffic urban region once a week for two years in which fifteen heavy metals were measured. Methods: positive matrix factorization...
Sexual Health Education Resources, Based on Ideas and Experiences of Students of Two Major Universities in Zahedan, Iran
Background: To determine the most usual resources that adolescents and teenagers are using to learn about sexual issues. A cross-sectional exploratory study implemented in June 2015 in Zahedan, the capital city of Sistan...