[Application of white-rot fungi in composting lead-contaminated waste].
Simulative lead polluted wastes which containing 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 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 lead to the reduction of the bioavailability of Pb in compost and alleviate 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, 30.1g, 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%.
Huang
Dan-Lian
DL
Department of Environmental Science and Engineering, Hunan University, Changsha 410082, China.
Zeng
Guang-Ming
GM
Huang
Guo-He
GH
Hu
Tian-Jue
TJ
Jiang
Xiao-Yun
XY
Feng
Chong-Ling
CL
Chen
Yao-Ning
YN
D001673:Biodegradation, Environmental; D004787:Environmental Pollution / Q000517:prevention & control*; D005308:Fertilizers; D005658:Fungi / Q000378:metabolism*; D007854:Lead / Q000032:analysis / Q000378:metabolism*; D012037:Refuse Disposal / Q000379:methods*; D018505:Waste Management / Q000379:methods
D005308:Fertilizers; D007854:Lead