Efficiency of near-infrared reflectance spectroscopy to assess and predict the stage of transformation of organic matter in the composting process

Rapid estimation of nutrients in chicken manure during plant-field composting using physicochemical properties

“…In order to reduce the potential environmental threat and maximize the utilization efficiency, rapid and low-cost methods to obtain the quantitative information on nutrient content in livestock and poultry manure is needed. Since near infrared spectroscopy (NIRS) was used for the rapid analysis of animal manures, especially for animal composts in the 1990's, many scientists have paid it much attention (Takashi et al, 1993;Nakatani et al, 1996;Ko et al, 2004;Malley et al, 2005;Huang et al, 2008;Albrecht et al, 2008), but this method is relatively expensive and requires professional operators.…”

Animal Manures: Recycling and Management Technologies

“…Both terms are usually used interchangeably to describe the degree of decomposition and transformation of the organic matter in compost [34], despite the fact that they describe different properties of the composting substrate. Stability is strongly related to the degree to which composts have been decomposed to more stable organic materials [35]. Unstable compost, in contrast, contains a high proportion of biodegradable matter that may sustain a high microbial activity [36].…”

Application of Multivariate Data Analyses in Waste Management

“…For spectral data interpretation PCA was carried out. Albrecht et al [2] also performed a PCA for near infrared (NIR) spectra evaluation from an ongoing composting process. Smidt et al [12] used PCA to show differences in spectral characteristics of different waste materials.…”

“…Hansson et al [6] predicted the concentration of propionate in an anaerobic process by near infrared spectra. Albrecht et al [2] developed calibration models between spectral data and C, N, C:N ratio and composting time. Michel et al [42] predicted chemical and biological properties of composts such as organic C (Corg), total N, C:N ratio, age, microbial biomass (Cmic), Cmic:Corg, basal respiration, enzymatic activity and plant suppression using near infrared spectroscopy.…”