SPENT MUSHROOM SUBSTRATE: WHITE-ROT FUNGI EV AGED CREOSOTE-CONTAMINATED SOIL

摘要

The traditional biological treatment methods such as landfarming, biopiles and composting are often applied to the degradation of readily degradable pollutants such as light oils and low-molar-mass polyaromatic hydrocarbons. However, these methods have certain limitations in the application to the more recalcitrant pollutants e.g. high-molar-mass polyaromatic hydrocarbons, polychlorinated biphenyls and some pesticides. Use of white rot fungi for degradation of recalcitrant pollutants have been studied since the late 1980s. Few of these studies have been performed with soil, and even less with non-sterile soil and aged contaminated soil. An effective, low-cost fungal inoculum is important for the white-rot fungal technique to become a success. Mushroom cultivation is a common method all over the world and also a major income source in different developing countries. In many countries, the spent mushroom substrate is discarded as waste, and usage tends to be limited to soil conditioning and fertilizing. Application of spent fungal substrate from commercial mushroom cultivation in bioremediation, would therefore be an excellent way of recycling agroindustrial by-products.