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Title: Bioremediation of petroleum-contaminated beach sediments in Singapore
Authors: XU RAN
Keywords: Beach Sediments; Biodegradation; Biopolymer; Bioremediation; Petroleum Hydrocarbons; Slow-Release Fertilizer
Issue Date: 3-Dec-2004
Citation: XU RAN (2004-12-03). Bioremediation of petroleum-contaminated beach sediments in Singapore. ScholarBank@NUS Repository.
Abstract: Bioremediation of beach sediments contaminated with marine oil spillages aims to achieve the goal of a permanent cleanup of the inter-tidal shoreline. This study was undertaken to develop an optimised in-situ oil bioremediation strategy for Singaporea??s coastline. Effective biodegradation of petroleum hydrocarbons using the indigenous microbial biomass has been achieved via manipulation of the sediment microenvironment with bioremediation additives. Osmocote, a slow-release fertilizer, can deliver a sustained release of nutrients to the microorganisms in an aggressive leaching environment and significantly stimulate metabolic activity and oil biodegradation. The application of chitosan, a biopolymer, in conjunction with Osmocote accelerates the in-situ biodegradation of recalcitrant polycyclic aromatic hydrocarbons (PAHs) in sediments at the inter-tidal foreshore. These bioremediation additives represent a powerful combination for use in oil clean-up programs in tropical environments to minimize the ecological risk of primary oil spillage and its remediation.
Appears in Collections:Ph.D Theses (Open)

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