Abstract
Sixty soil columns (12 combinations, each having five replicates) on which common Bermudagrass grown were prepared to investigate the feasibility and practicability of sewage sludge as a soil amendment material with focus on the effect of sludge on grass growth and heavy metal (Cd, Cr, Cu, Ni, Pb and Zn) uptake under four sludge loading rates and three lime loading rates. It was found that sludge loading rate of 50 g kg−1 CDG and lime loading rate of 4 g kg−1 CDG gave the greatest above-ground biomass and the lowest concentration of heavy metals in grass tissue under experimental conditions. The extension of sludge use to slope bio-engineering will be discussed which also help to relieve the pressure of sludge disposal in landfills.
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