农业环境科学学报2025，Vol.44Issue(2)：509-517,9.DOI:10.11654/jaes.2024-0347
小球藻净化猪沼液全周期氮磷含量近红外光谱模型构建
Construction of a near-infrared spectroscopy model for monitoring nitrogen and phosphorus content during the entire purification cycle of pig slurry using Chlorella vulgaris
摘要
Abstract
In view of the lack of a near-infrared model for monitoring the dynamic changes of nitrogen and phosphorus content in pig biogas slurry purified by chlorella,660 biogas slurry samples collected in a chlorella biogas slurry purification experiment were used as research objects,and near-infrared spectroscopy combined with principal component analysis,partial least squares and other stoichiometric methods were applied.A general model for monitoring nitrogen and phosphorus content in the whole process of pig farm biogas slurry purification based on near-infrared spectroscopy was established.A general model for monitoring the total nitrogen(TN),ammonia nitrogen(NH+4-N),and total phosphorus(TP)content of porcine biogas slurry purified by chlorella was established,respectively.The results show that the prediction performance of the biogas slurry NH+4-N model is good.The root mean squared error of prediction(RMSEP),coefficient of determination(R2p),and residual predictive deviation(RPD)were 35.273 mg·L-1,0.794,and 2.202,respectively.The RMSEP,R2p,and RPD of TN model of biogas slurry were 45.275 mg·L-1,0.711 and 1.854,respectively,and the RMSEP,R2p,and RPD of TP model were 1.148 mg·L-1,0.727,and 1.915,respectively,which could be used for quantitative prediction.The results showed that the near-infrared predicted value and the measured value had a good consistency with the culture time,which could realize the real-time monitoring of nitrogen and phosphorus content in the whole cycle of porcine biogas slurry purified by chlorella.关键词
近红外光谱/猪场沼液/小球藻/氮磷含量/偏最小二乘法Key words
near-infrared spectroscopy/pig farm biogas slurry/chlorella/nitrogen and phosphorus content/partial least squares method分类
农业工程引用本文复制引用
陈克诚,侯天保,李梦婷,李竺乘,刘家华,赵润,杨鹏..小球藻净化猪沼液全周期氮磷含量近红外光谱模型构建[J].农业环境科学学报,2025,44(2):509-517,9.基金项目
天津市农业产学研用"揭榜挂帅"项目(GBTG202305) （GBTG202305）
宁夏农业关键核心技术攻关项目 （）
天津市现代农业产业技术体系项目(ITTPRS2021009) Tianjin Agricultural Industry-University-Research"Revealing-Leader"Project(GBTG202305) （ITTPRS2021009）
Ningxia Agricultural Key Core Technology Research Project （）
Tianjin Modern Agricultural Industrial Technology System Project(ITTPRS2021009) （ITTPRS2021009）
