Combining chemical sequential extractions with 3D fluorescence spectroscopy to characterize sludge organic matter

Photocatalytic improvement of Y3+ modified TiO2 prepared by a ball milling method and application in shrimp wastewater treatment

“…46 In the shrimp wastewater, these organic pollutants are mainly caused by the residual baits and untreated metabolites and residues of shrimp and sh. 47 As illustrated in Fig. 11(a), the fulvic-like substances and humic-like substances cover the relatively large proportions at the beginning of the photocatalytic reaction.…”

Characterization and prediction of organic nitrogen biodegradability during anaerobic digestion: A bioaccessibility approach

“…To explain these results, the composition of solvents used for each fractionation method has to be considered. In particular, as stated by Jimenez et al (2015) and Muller et al (2014) containing lignocellulose compounds which strongly limits its bioaccessibility.…”

“…Despite these promising results, Mottet et al, (2010) pointed out that this fractionation method is too aggressive to be representative of biological disintegration that occurs during anaerobic digestion, which limits its use for the prediction of biodegradability. Jimenez et al, (2015) then developed a less aggressive fractionation method based on the protocol of Muller et al, (2014) that targeted extracellular polymeric substances. This protocol, named EPS protocol, uses increasing alkaline solutions, and targets protein-like substances; it ends with strong acid extraction targeting holocellulosic-like products.…”

Monitoring biological wastewater treatment processes: recent advances in spectroscopy applications

“…FLC spectroscopy is used essentially for the characterization and quantification of DOM in anaerobic processes further correlated with a number of other parameters (Pang et al 2014;Zheng et al 2014;Zhou et al 2015;Provenzano et al 2014;Muller et al 2014;Kang et al 2016). Li et al (2014b) studied the enhancement of bio-hydrogen production from kitchen waste by a short-time hydrothermal pretreatment at different temperatures.…”

“…On the other hand, FRI is a quantitative technique that integrates the volumes beneath operationally defined EEM regions, with the normalized region-specific EEM volumes representing the relative abundance of DOM fractions in a water sample. Despite the fact that the above two methods are the most used in the FLC spectra analysis (Li et al 2014b;Zhang et al 2011;Dai et al 2013;Zhou et al 2015;Luo et al 2013;Muller et al 2014;Yu et al 2016), other works have been published using PLS (Jimenez et al 2014;Morel et al 2004), PCA (Aemig et al 2016 and SWR models (Morel et al 2004). Table 4 shows the most relevant published studies using IR and FLC spectroscopy.…”