Extractable forms of heavy metals produced during municipal sludge composting
城市污泥好氧堆肥过程中重金属的形态变化

The concentration of bio-available heavy metals in sludge is one of the major considerations for soil plant systems. Currently,land application of sludge and sludge products is determined by their total heavy metal concentrations rather than bio-available metal concentrations. Hence it is important to determine the bio-available heavy metal concentrations of sludge and sludge products for their efficient use in agricultural applications. In the present study,sludge samples composted for different durations ...