Bentonite as an additive in the composting of wastewater sludge from the poultry agroindustry

Abstract The objective of this work was to evaluate the use bentonite as an additive in composting wastewater sludge from poultry agroindustry regarding nitrogen conservation, carbon degradation, and nutrient content increase. experimental design completely randomized with five treatments at 0, 0.5, 1.0, 3.0, 6.0%, three replicates. organic compost used consisted pine sawdust treatment plant. During after process, following were analyzed, respectively: pH, dry matter, temperature, C, N, NH4+, NO2-, NO3- contents; P, K, Ca, Mg, Cu, Zn contents humic fulvic acid concentrations. Bentonite 6.0% increased C N losses, Mg content, humification, but decreased humidity. Bentonite, agroindustry, promotes decreases humidity, does not affect pH contents.