Application of Organic Wastes in a Soil Polluted with Different Rates of Cr-Pb: Effects on Soil Biological Properties

作者：Tejada Manuel^*; Del Toro Marina; Gomez Isidoro

来源：Communications in Soil Science and Plant Analysis, 2016, 47(1): 65-76.

DOI：10.1080/00103624.2015.1108429

• Agricultural waste
• heavy metals
• microbiology

An experiment was performed to determine the effects of adding municipal solid waste (MSW) and poultry manure (PM) to a soil polluted with chromium (Cr), lead (Pb), and Cr + Pb on the biological parameters of the soil. Soil was mixed with two solutions of Cr(NO3)(3) and/or Pb(NO3)(2) to give three concentrations (0, 100, and 250mg Cr kg(-1) soil and 0, 100, and 250mg Pb kg(-1) soil) and treated with MSW or PM. When the soil was contaminated with the metals without combining, the greatest adenosine triphosphate (ATP), urease, and phosphatase inhibition percentages occurred for 250mg Pb kg(-1) soil. When the heavy metals were mixed, the inhibition of the biochemical parameters increased. The application of MSW and PM decreased the inhibition of the biochemical parameters and microbial population in the polluted soils. The inhibition percentage was greater for the soil amended with MSW than with PM, possibly due to the high humic acid concentration.

• 出版日期2016-1-2