Impurities in Raw Sugarcane Before and After Biorefinery Processing

Mello, Matheus Lima de; Barros, Nathalia Zanetti; Sperança, Marco Aurélio; Pereira, Fernando Mendes

doi:10.1007/s12161-021-02105-1

Cited by 6 publications

(3 citation statements)

References 43 publications

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“…For elemental analysis, X-ray fluorescence-based techniques have proved to be promising for a wide variety of fields, delivering fast-throughput results without using aggressive or toxic reagents such as strong acids. 9,14 Reference concentration values are required from wet methods for training the multivariate models, but there is no need to repeat these determinations after the models are built.…”

Section: Resultsmentioning

confidence: 99%

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XRF‐based analytical methods for supporting sustainability in sugarcane biorefineries

Sperança

Nascimento

Olivieri

et al. 2021

Biofuels Bioprod Bioref

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There is a clear need for analytical methods able to evaluate impurities in sugarcane biorefineries. Impurities that may occur during sugar and ethanol production which involves a high content of starch, fructose, dextran and minerals. Another type of impurity comes from solid materials such as soil and the green or dry/brown leaves of the sugarcane plant. This study focused on the mineral content, which causes an increase in both cost and time, a loss of quality and a negative environmental impact, and may also hinder the crystallization process. The presently developed analytical methods demonstrate the possibility of using X-ray fluorescence-based techniques, even for complex samples like sugarcane juices. The exploratory analysis evidenced that X-ray fluorescence techniques can discriminate the sugarcane juices in different clarification stages. This report developed an analytical method by building up multivariate models based on partial least-squares regression. These models showed promising results in estimating the contents of Mg, P, S, K, Ca and Fe for all of the first seven clarification stages. For most elements, the relative prediction errors were <14%, with coefficients of determination >0.9083. The main achievement was the development of sustainable analytical methods to monitor mineral content in extracted juices from sugarcane during the clarification stages with reduced sample volume and fewer chemicals.

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Section: Resultsmentioning

confidence: 99%

“…Mello et al . (2021) 14 reviewed publications from 1993 to 2021 regarding impurities in raw sugarcane before, during and after biorefinery processing. This report revealed a lack of analytical methods to detect and monitor mineral impurities, mainly in raw materials and sugar end‐products.…”

Section: Introductionmentioning

confidence: 99%

XRF‐based analytical methods for supporting sustainability in sugarcane biorefineries

Sperança

Nascimento

Olivieri

et al. 2021

Biofuels Bioprod Bioref

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“…This colloid is composed of sucrose (810-870 g/kg Brix), reducing sugar (30-60 g/kg Brix), oligosaccharides (0.6-6 g/kg Brix), polysaccharides including gums and dextrans (2-8 g/kg Brix), inorganic salts (15-37 g/kg Brix), organic non-sugar substances (16.8-52 g/kg Brix), and insolubles (1.5-10 g/kg Brix) [4]. Apart from sucrose, the other constituents must be removed to obtain a refined juice with low turbidity [5]. The removal of suspended solids and non-sucrose impurities can be achieved by clarification [6][7].…”

Section: ■ Introductionmentioning

confidence: 99%

Flocculation Performance of Industrial Sugarcane Juice by Acrylamide-Based Anionic Flocculant

Ningrum

Subyakto²,

Ciptonugroho³

et al. 2023

Indones. J. Chem.

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Despite the widespread use of ionic polymer flocculants in sugar refineries, there is still insufficient knowledge on the relationship between the polymer properties and the efficiency of flocculation. This paper describes the performance of poly(sodium acrylate-co-acrylamide) (poly(SA-co-AAm)) as an anionic flocculant in the flocculation–coagulation of sugarcane juice from the sugar factory Gempolkrep PTPN X Mojokerto. Poly(SA-co-AAm) was successfully prepared via free radical polymerization of sodium acrylate and acrylamide with respective molar ratios of 40:60, 50:50, and 60:40, and compared with the commercial flocculant Accofloc. It was found that the mud height of the sugarcane decreased with increasing SA:AAm ratio. However, mud height increase was observed with further increasing SA:AAm ratio. Furthermore, increasing the flocculant dosage did not induce any significant change in the mud height and pH. The total dissolved solids (TDS) significantly decreased when the ratio of sodium acrylate:acrylamide was changed from 40:60 to 50:50, whereas a further change to 60:40 increased the TDS value again. It is also noticed that the tendency of turbidity is consistent with the TDS value. These results demonstrate that poly(SA-co-AAm) is a feasible alternative to the commercial flocculant owing to its good flocculation–coagulation performance with an optimum SA:AAm ratio of 50:50.

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Mineral Scale Formed During the Evaporation in Biorefineries — Characterization Using X-ray Fluorescence and Exploratory Analysis

2022

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Impurities in Raw Sugarcane Before and After Biorefinery Processing

Cited by 6 publications

References 43 publications

XRF‐based analytical methods for supporting sustainability in sugarcane biorefineries

XRF‐based analytical methods for supporting sustainability in sugarcane biorefineries

Flocculation Performance of Industrial Sugarcane Juice by Acrylamide-Based Anionic Flocculant

Mineral Scale Formed During the Evaporation in Biorefineries — Characterization Using X-ray Fluorescence and Exploratory Analysis

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