Cu (II) and ammonium adsorption from dairy cattle breeding sewage by phosphorus-modified dairy cow manure hydrochar

To realize the synergistic treatment of dairy cow manure solids and cattle breeding sewage, this study produced phosphorus-modified hydrochar by impregnated with potassium phosphate (K3PO4). And then, adsorption characteristics Cu (II) ammonium (NH4+) in sewage under different dosages time conditions modified were explored. The results show that specific surface area total pore volume increased phosphorus-modified. amount per unit-mass decreased increase dosage. With dosage, capacity from initial 26.16 mg/g to 3.38 mg/g. NH4+ was mainly chemical adsorption, which affected chelation ion exchange. This more inclined single-molecular layer adsorption. Both pH values ionic strength influenced competitive between NH4+. higher value was, greater amount, stronger hydrochar. Moreover, decreases Keywords: manure, hydrochar, DOI: 10.25165/j.ijabe.20221505.7640 Citation: Yang Z D, Tong M, He X Q, Han L J, Guo J B, Jing T et al. Int Agric & Biol Eng, 2022; 15(5): 78–84.