alexa Treatment of landfill leachate by white rot fungus in combination with zeolite filters.


Journal of Drug Metabolism & Toxicology

Author(s): Kim YK, Park SK, Kim SD

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Abstract This article presents the experimental work for the treatment of landfill leachate in a combined process using the white rot fungus Phanerochaete chrysosporium and the natural zeolite Clinoptilolite. Clinoptilolite was used in a pretreatment step as a sink for ammonia nitrogen and, on average it reduced the levels of ammonia nitrogen, soluble chemical oxygen demand (COD) and color by 72, 4.7, and 25\%, respectively. The reductions by fungal treatment alone were 16.6, 21.5, and 31.2\%, respectively. However, a reduction in nitrogen loading greatly enhanced fungal treatment efficiency. A high C/N ratio in the leachate was found preferable for the fungal treatment. With the synergy created by pretreatment and fungal growth that was stimulated by the addition of a growth medium, the process could remove ammonia nitrogen, soluble COD (SCOD) and color at levels as high as 81.5, 65, and 59\%, respectively. The ratio of SBOD5/SCOD increased from 0.1 to 0.17 upon treatment, indicating that the process rendered the leachate more amenable to the biological process. This result suggested that the preliminary reduction of ammonia nitrogen was essential in making the fungal process practicable for landfill leachate treatment.
This article was published in J Environ Sci Health A Tox Hazard Subst Environ Eng and referenced in Journal of Drug Metabolism & Toxicology

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