Journal
BIOREMEDIATION JOURNAL
Volume 16, Issue 3, Pages 177-184Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/10889868.2012.687417
Keywords
biodegradation; contaminated soil treatment; naphthalene; oil palm fiber; Pleurotus ostreatus
Categories
Funding
- Ministry of Science, Technology and Innovation, Malaysia
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The efficiency and kinetics of naphthalene biodegradation in a soil medium using Pleurotus ostreatus (a type of white rot fungus) in batch mode with and without the addition of oil palm fiber (OPF) as a nutrient are evaluated in this study. Three batches are considered in the biodegradation study: (i) control-spiked soil; (ii) spiked soil with fungus; and (iii) spiked soil with both fungus and OPF. Biodegradation is conducted over a period of 22 days for which soil naphthalene concentrations are determined with respect to microwave extraction and high-performance liquid chromatography (HPLC) analysis. The results indicate that inoculation with Pleurotus ostreatus significantly enhances soil naphthalene biodegradation to 84%, which is further enhanced upon the addition of OPF to 98% with respect to the degradation rate. The high carbon content in OPF (>40%) affords it the capacity to be a viable nutrient supplement for Pleurotus ostreatus, thereby enhancing the potential of Pleurotus ostreatus in the biodegradation of polycylic aromatic hydrocarbons (PAHs), and indicating the potential of OPF as a nutrient for PAH biodegradation. A relationship between OPF mass and the biodegradation rate constant has been determined to be linear according to the following equation: k = 0.0429 x OPF + 0.1291.
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