Przemysl Chemiczny, Vol.92, No.4, 531-534, 2013
Possibility of producing granular fertilizers from municipal sewage sludge and industrial waste
Mixts. of municipal sewage sludge, sawdust and CaSO4 center dot 2H(2)O and FeSO4 center dot 7H(2)O wastes were granulated after addn. of Na lignosulfonate and studied for chem. compn. They met requirements for org.-mineral fertilizers. In particular, the concns. of heavy metals were not exceeded.