title: [Impacts on N and P conservation during swine manure composting with different modified metal-salts addition].
abstract: Batch experiments were carried out by using mixed-level uniform design method U6 (692) x 3) to investigate the effect of the addition of different metal-salts at 20%, 40% and 60% of NT, respectively, including modified red-mud (MR) at pH 5.0 +/- 0.2 and 7.0 +/- 0.2, respectively, modified forsterite (MF) at pH 7.0 +/- 0.2, and MgSO4 on nitrogen and phosphorus conservation during swine manure composting. The results showed that the optimum effect of N saved occurred at No. 5 experiment (20%, MF, day 17) and No. 3 experiment (40%, MgSO4, day 10). Meanwhile, the P conservation of experiments with metal salts addition was better than that of the control, and the No. 6 experiment (20%, MR with pH =5, day 21) was the highest on TP conservation, with the lowest ratio of PO4(3-) -P/TP.
authors.affiliation: School of Chemistry & Environment, Beijing University of Aeronautics & Astronautics, Beijing 100191, China. xlzeng@buaa.edu.cn
authors.forename: Xiao-lan
authors.initials: XL
authors.lastname: Zeng
authors.forename: Jia-xi
authors.initials: JX
authors.lastname: Zheng
authors.forename: Yuan-song
authors.initials: YS
authors.lastname: Wei
authors.forename: Yun
authors.initials: Y
authors.lastname: Fang
authors.forename: Xiao-feng
authors.initials: XF
authors.lastname: Wu
authors.forename: Li-ping
authors.initials: LP
authors.lastname: Chen
mesh_terms: D000818:Animals; D005308:Fertilizers; D008278:Magnesium Sulfate / Q000737:chemistry; D008372:Manure; D008670:Metals / Q000737:chemistry*; D009584:Nitrogen / Q000032:analysis*; D010758:Phosphorus / Q000032:analysis*; D000644:Quaternary Ammonium Compounds / Q000032:analysis; D012037:Refuse Disposal / Q000379:methods*; D017655:Silicon Compounds / Q000737:chemistry; D013552:Swine
chemical_list: D005308:Fertilizers; D008372:Manure; D008670:Metals; D000644:Quaternary Ammonium Compounds; D017655:Silicon Compounds; C503823:forsterite; D010758:Phosphorus; D008278:Magnesium Sulfate; D009584:Nitrogen