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Bioprocess development for biosorption of toxic heavy metals from industrial effluents
1997
Mohd Razman Salim | Zaharah Ibrahim | Abu Bakar baba (Universiti Technologi Malaysia, Skudai Johor Darul Ta'zim (Malaysia). Dept. of Environmental Engineering)
Pollution of the environment by toxic metals arises as a result of human activities such as industrial, agricultural, mine-drainage and sewage disposal. Once in the environment, the metal undergo several forms of transformations. The removal of toxic metal is of great significance from the environmental and industrial point of view. The increased in sound environment and stringent legal requirements has led to the need for cost effective treatment technology for metal pollution control. Biological treatment processes using microbial biomass are known capable of treating industrial waste successfully. The initial aim of the project was to screen a number of metal-tolerant organisms and develop microbial strain capable of detoxification, biosorption and recovery of heavy metals. Due to limited knowledge based studies on several industrial wastes are necessary to determine the potential strains as well as the viable technique to be used in recovery/removal of heavy metals
Afficher plus [+] Moins [-]Review of the biological studies on Laguna de Bay [Philippines] in relation to aquatic pollution
1997
Guerrero, R.D. III (Philippine Council for Aquatic Marine Research and Development, Los Banos, Laguna (Philippines))
Laguna de Bay is the largest freshwater body in the Philippines with multiple-use. The primary use of the lake is to serve as the future domestic water supply at Metro Manila. The biota of the lake consists of 25 species of fish, 24 species of zooplankton, two species of shrimps, 6 species of mollusks, 42 species of aquatic macrophytes and 154 species of algae. A total of 60 mesophilic anaerobic and facultative anaereobic bacteria and 453 bacterial strains belonging to 22 genera have been identified. A review of 12 papers dealing with biological studies on Laguna de Bay in relation to aquatic pollution is presented. Studies on the impact of heavy metal, pesticide and thermal pollution on the biota of the lake have been sporadic and cursory. There is need for a more comprehensive and systematic monitoring of the lake's pollutants to provide time-series for pollution abatement
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