title: Comparison of physicochemical parameters during the forced-aeration composting of sewage sludge and maize straw at different initial C/N ratios.
abstract: The composting of sewage sludge and maize straw was investigated in forced-aeration composting systems at initial C/N ratios of 14, 20, and 25, respectively. The temperatures of composting mixture with initial C/N ratios of 25 and 20 could meet the requirement of destroying pathogens. The final electrical conductivity (EC) of composting mixture with initial C/N ratios of 20 and 25 did not exceed the limit value of 3000 microS cm(-1), and the NH4(+)-N content of composting mixture with an initial C/N ratio of 14 did not meet the limit value of 400 mg kg(-1). The final NO3(-)-N and germination index (GI) of composting mixture with an initial C/N ratio of 25 were higher than those of composting mixtures with initial C/N ratios of 14 and 20. The Fourier transform infrared (FTIR) spectra of composting mixtures in the three composting mixtures showed the same changing pattern during the composting.
authors.affiliation: Key Laboratory of Marine Environmental Science and Ecology, Ministry of Education, Ocean University of China, Qingdao, People's Republic of China.
authors.forename: Zichao
authors.initials: Z
authors.lastname: Wang
authors.forename: Mengchun
authors.initials: M
authors.lastname: Gao
authors.forename: Zhe
authors.initials: Z
authors.lastname: Wang
authors.forename: Zonglian
authors.initials: Z
authors.lastname: She
authors.forename: Bo
authors.initials: B
authors.lastname: Hu
authors.forename: Yuejing
authors.initials: Y
authors.lastname: Wang
authors.forename: Congcong
authors.initials: C
authors.lastname: Zhao
mesh_terms: D000641:Ammonia; D019149:Bioreactors; D002244:Carbon; D009566:Nitrates; D009584:Nitrogen; D018547:Plant Stems; D012722:Sewage / Q000737:chemistry*; D013997:Time Factors; D003313:Zea mays
chemical_list: D009566:Nitrates; D012722:Sewage; D002244:Carbon; D000641:Ammonia; D009584:Nitrogen