Application of white-rot fungi in composting lead-contaminated waste

作者：Huang Dan Lian^*; Zeng Guang Ming; Huang Guo He; Hu Tian Jue; Jiang Xiao Yun; Feng Chong Ling; Chen Yao Ning

来源：Environmental Science, 2006, 27(1): 175-180.

Simulative lead polluted wastes which contained unpolluted soil, household waste, straw, bran and lead nitrate were prepared. Inoculation of white-rot fungi and uninoculation in composting of lead-contaminated waste were studied. Change of chemical factor, biological parameter and biological toxicity analyses with time during the composting process were determined to study the effect of heavy metal on composting process and probability of application of white-rot fungi in composting of metal-contaminated waste. The results show the composting of lead-contaminated waste inoculated white-rot fungi could be successfully processed, which leads to the reduction of the bioavailability of Pb in compost and alleviates the potential harm from heavy metal. Under this composting process, for the final compost, pH, water-soluble organic carbon/nitrogen, volatile solid, lignin and coarse fibre remained reached 7.9, 4.01, 36.1%, 22.4g, 30.1 g, respectively. In addition, 63.38% of Pb in residual fraction and 0% of Pb in soluble-exchangeable fraction were found in final compost, and the germination index of final compost reached 121%.

• 出版日期2006