Abstract

EFFECT OF U.V. LIGHT EXPOSURE ON DEGRADATION OF NAPHTHALENE BY FILAMENT FUNGI

*Duha Bahaa Mohammed Al Fayaad, Eman H. Abed and Seham Majeed Mohammed

Abstract

Aspergillus niger and Trichoderma viridi were tested for its ability to degrade naphthalene after exposing to U.V light (30, 45, 60 min) by using solid mineral salts medium (SMS) with different concentrations 100, 300, 500 ppm of naphthalene. Results showed that 100ppm was the best concentration consumed by the fungal test then 300ppm and 500ppm and the results for secondary test by using Liquid Mineral Salts Medium (LMSM) 95% of degradation for 100ppm after 30 min of U.V. light exposure for Aspergillus niger while the results for Trichoderma viridi the best ratio for degradation was 97% for 100ppm after 30 min of U.V. light exposure.

Keywords: Biodegradation, Naphthalene, filament fungi, U.V. Light.