Valorization of Biomass into Micronutrient Fertilizers

Samoraj, Mateusz; Tuhy, Łukasz; Chojnacka, Katarzyna

doi:10.1007/s12649-017-0108-6

Cited by 7 publications

(3 citation statements)

References 25 publications

(31 reference statements)

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“…Strong correlations between ICP-OES and XRF were shown also for liquid samples, where the multielement content of municipal landfill leachates was examined [ 26 ]. A straight line was obtained (for Hg, Pb, Cu, V, Ni, As, Cr, Zn, Ti, Mn, B, Rb, P, Sr, Fe, Br, Mg, S, Ca, K, Na, Cl) by putting in ordinate the analytical results of the ICP-OES and in abscissa the analytical results of the TXRF.…”

Section: Discussionmentioning

confidence: 99%

Using XRF and ICP-OES in Biosorption Studies

et al. 2018

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In this work, a method of recalculation of results of X-ray fluorescence (XRF) technique to Inductively Coupled Plasma-Optical Emission Spectroscopy (ICP-OES) method was elaborated for biosorption studies. Equations that calibrate XRF to ICP-OES were determined, as a biosorbent strawberry, blackcurrant and raspberry seeds after supercritical CO2 extraction were used. ICP-OES showed a better precision and lower detection limits than XRF. The latter technique is cheaper, requires minimal sample preparation and gives faster results. Linear regression of the data gave almost 1:1 correlations without additional correction (for Cu r2 = 0.9998, Mn r2 = 0.807, Zn r2 = 0.979). Calibration and quantification of intensities of XRF was obtained using ICP-OES measurements after samples digestion with HNO3 in a microwave system. High positive correlations were estimated for Cu, Mn, Zn. It was demonstrated that XRF technique can be used together with other well established techniques (ICP-OES) to produce quantitative data from biosorption studies. Elaboration of cheap and quick analytical methodology is an important aspect in development of new processes and products based on biosorption process.

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Section: Discussionmentioning

confidence: 99%

Using XRF and ICP-OES in Biosorption Studies

et al. 2018

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“…These results show that hydrothermal treatments are not severe enough to break the achenes despite their high presence in the RE. Therefore, further research could consider the implementation of another type of treatments to break the achenes to facilitate the release of the high-added value compounds that are present in the achenes [15]. Figure 5.…”

Section: Achenesmentioning

confidence: 99%

“…During the process, the sieves retain a residual fraction, called residual raspberry extrudate (RE), which is composed of the fibres and achenes that contain most of the bioactive compounds found in raspberry fruit [12]. The achenes contain a wide variety of phenolic compounds with a high antioxidant capacity whereas the fibres are rich in other phenolic compounds [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Solubilization of Phenols and Sugars from Raspberry Extrudate by Hydrothermal Treatments

et al. 2020

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Raspberry extrudate residue has bioactive compounds in its matrix that are considered high-added value compounds. In the present study, different hydrothermal treatments were carried out using different operational systems, temperatures and times to solubilize raspberry extrudate in order to obtain these bioactive compounds (i.e., sugars and phenolic compounds). Hydrothermal treatment conditions were assessed in the range of 60 °C to 210 °C, with increments of 30 °C. The hydrothermal treatment at 210 °C for 5 min with direct steam and decompression was the most efficient process based on the solubilization of sugars and phenols, as well as on the antioxidant capacity of the products recovered in the liquid phase after treatment. Under these conditions, the concentration of soluble phenols was more than double the concentration in the raw raspberry extrudate, with more than 5000 mg phenols per kilogram of raspberry extrudate. The obtained values demonstrate the potential of applying this treatment for recovering valuable bioactive compounds from raspberry extrudate.

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