title: Assessment of maturity during co-composting of penicillin mycelial dreg via fluorescence excitation-emission matrix spectra: Characteristics of chemical and fluorescent parameters of water-extractable organic matter.
abstract: To investigate characteristics of water-extractable organic matter (WEOM) from different stages and evaluate the maturity for co-composting penicillin mycelial dreg (PMD) via fluorescence regional integration (FRI) of fluorescence excitation-emission matrix (EEM), a pilot-scale co-composting was carried out. The results showed that a classical temperature profile showed and a degradation rate of 98.1% for residual penicillin was obtained on the 6th day. DOC and DOC/DON ratio were in a low level of 4.0 g kg(-1) and 3.7, respectively, after the 32nd day. In addition, respirometric rate (SOUR) decreased to 0.87 mg O2 g(-1) VS h(-1) finally. The EEM showed that the specific Ex/Em peak related to microbial byproduct-like vanished on the 32nd day, while those related to fulvic-like and humic acid-like appearing on the 24th day. The fluorescence regional integration (FRI) results demonstrated that PV,n/PIII,n increased to 3.28 finally, suggesting a desirable maturity for co-composting PMD. The EEM-FRI consequently has the potential for characterizing the WEOM from the co-composting of PMD.
authors.affiliation: School of Civil Engineering and Architecture, Anhui University of Technology, Ma'anshan 243002, China; State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), Harbin Institute of Technology, Harbin 150090, China. Electronic address: 05553@163.com.
authors.forename: Shihua
authors.initials: S
authors.lastname: Zhang
authors.affiliation: State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), Harbin Institute of Technology, Harbin 150090, China.
authors.forename: Zhiqiang
authors.initials: Z
authors.lastname: Chen
authors.affiliation: State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), Harbin Institute of Technology, Harbin 150090, China. Electronic address: 66752@163.com.
authors.forename: Qinxue
authors.initials: Q
authors.lastname: Wen
authors.affiliation: School of Civil Engineering and Architecture, Anhui University of Technology, Ma'anshan 243002, China.
authors.forename: Jiangya
authors.initials: J
authors.lastname: Ma
authors.affiliation: School of Civil Engineering and Architecture, Anhui University of Technology, Ma'anshan 243002, China.
authors.forename: Zhonghua
authors.initials: Z
authors.lastname: He
mesh_terms: D052918:Environmental Restoration and Remediation / Q000379:methods*; D005453:Fluorescence; D006812:Humic Substances / Q000032:analysis*; D009930:Organic Chemicals / Q000737:chemistry* / Q000302:isolation & purification; D010406:Penicillins / Q000737:chemistry*; D012037:Refuse Disposal / Q000379:methods*; D013050:Spectrometry, Fluorescence / Q000379:methods; D013696:Temperature; D014867:Water / Q000737:chemistry*; D014874:Water Pollutants, Chemical
chemical_list: D006812:Humic Substances; D009930:Organic Chemicals; D010406:Penicillins; D014874:Water Pollutants, Chemical; D014867:Water
keywords: Co-composting; Excitation-emission matrix spectra (EEM); Penicillin mycelial dreg (PMD); Specific oxygen uptake rate (SOUR); Water-extractable organic matter (WEOM)