Insights to the Clarification of Sugar Cane Juice Expressed from Sugar Cane Stalk and Trash

Thai, Caroline C.D.; Bakir, Hakan; Doherty, William O.S.

doi:10.1021/jf204998b

Cited by 26 publications

(24 citation statements)

References 10 publications

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“…These values were lower than those obtained by Thai et al (2012), who used synthetic polymer as flocculating agent in sugar production and observed sludge formation of about 200 ml. Nevertheless, when these adjuvants were not used in the juice of the variety RB867515, there was low impurities precipitation, which resulted in high sludge volume ( Figure 1B), as also observed by Costa et al (2014).…”

Section: Juice Clarification Processcontrasting

confidence: 74%

Moringa extracts used in sugarcane juice treatment and effects on ethanolic fermentation

Macri¹,

Costa²,

Montijo³

et al. 2014

Afr. J. Biotechnol.

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Section: Juice Clarification Processcontrasting

confidence: 74%

Moringa extracts used in sugarcane juice treatment and effects on ethanolic fermentation

Macri¹,

Costa²,

Montijo³

et al. 2014

Afr. J. Biotechnol.

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“…6 With the one-stage clarification process, predominantly calcium phosphate and silica scale (neglecting the contribution from calcium oxalate) will be deposited in the evaporators, and the proportion will be significantly higher with the juice obtained with cold/intermediate liming. However, the proportion of scale formed from the juice using the cold liming technique may be only marginally higher than the scale derived from juice expressed from green cane with half the trash extracted (GE).…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…However, the proportion of scale formed from the juice using the cold liming technique may be only marginally higher than the scale derived from juice expressed from green cane with half the trash extracted (GE). 6 This is because of the higher proportion of phosphorus and suspended particles (i.e., higher turbidity). As mentioned in the previous work by the authors, the cost of cleaning the evaporators increases if phosphate scale coprecipitates with calcium oxalate and amorphous SiO 2 in the no.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…4,5 Recent work by the authors 6,7 on juice expressed from green cane containing only half of the initial trash present (GE) confirmed the issues highlighted by the previous authors 4,5 but noted that satisfactory clarification (i.e., separation of solid from liquid) performance can be achieved with juices expressed from green sugar cane containing <50% trash. 6 The conventional method for juice clarification in Australian sugar factories is termed simple defecation. In the defecation process, macerated water is added to mixed juice (MJ) to increase sugar extraction and is then heated from ∼35 to ∼76°C before the juice is incubated to remove starch.…”

Section: ■ Introductionmentioning

confidence: 99%

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Calcium Phosphate Flocs and the Clarification of Sugar Cane Juice from Whole of Crop Harvesting

Thai

Moghaddam

Doherty

2015

J. Agric. Food Chem.

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Sugar cane biomass is one of the most viable feedstocks for the production of renewable fuels and chemicals. Therefore, processing the whole of crop (WC) (i.e., stalk and trash, instead of stalk only) will increase the amount of available biomass for this purpose. However, effective clarification of juice expressed from WC for raw sugar manufacture is a major challenge because of the amounts and types of non-sucrose impurities (e.g., polysaccharides, inorganics, proteins, etc.) present. Calcium phosphate flocs are important during sugar cane juice clarification because they are responsible for the removal of impurities. Therefore, to gain a better understanding of the role of calcium phosphate flocs during the juice clarification process, the effects of impurities on the physicochemical properties of calcium phosphate flocs were examined using small-angle laser light scattering technique, attenuated total reflectance Fourier transformed infrared spectroscopy, and X-ray powder diffraction. Results on synthetic sugar juice solutions showed that the presence of SiO2 and Na(+) ions affected floc size and floc structure. Starch and phosphate ions did not affect the floc structure; however, the former reduced the floc size, whereas the latter increased the floc size. The study revealed that high levels of Na(+) ions would negatively affect the clarification process the most, as they would reduce the amount of suspended particles trapped by the flocs. A complementary study on prepared WC juice using cold and cold/intermediate liming techniques was conducted. The study demonstrated that, in comparison to the one-stage (i.e., conventional) clarification process, a two-stage clarification process using cold liming removed more polysaccharides (≤19%), proteins (≤82%), phosphorus (≤53%), and SiO2 (≤23%) in WC juice but increased Ca(2+) (≤136%) and sulfur (≤200%).

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“…Atualmente e com a utilização do sistema de colheita mecanizada que também carrega para a indústria além dos colmos, folhas, ponteiros da cana e terra, ocorre aumento significativo do teor desses elementos. Thai et al (2012) relataram aumento de 13% de cálcio, 32% de magnésio e 7,6% de silício, ao comparar a colheita mecanizada com a colheita manual com queima prévia da palhada.…”

Section: Introductionunclassified

Reflexos da clarificação do caldo de cana com moringa sobre compostos inorgânicos do açúcar VHP

Costa

Masson

Freita

et al. 2015

Rev. bras. eng. agríc. ambient.

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R E S U M OObjetivou-se, neste trabalho, avaliar os reflexos da clarificação do caldo de cana utilizando extrato de folhas e sementes de moringa (Moringa oleifera Lamarck) como auxiliares de sedimentação sobre os teores dos compostos inorgânicos do caldo clarificado e do açúcar VHP (Very High Purity -Tipo Exportação) produzido. O delineamento experimental utilizado foi o fatorial 5 x 2 com quatro repetições; o primeiro fator correspondeu aos auxiliares de sedimentação: extrato de folhas e sementes de moringa, polieletrólito sintético e testemunha; já o segundo fator correspondeu a duas variedades de cana-de-açúcar: RB92579 e RB867515. O caldo extraído foi clarificado através de caleagem simples, concentrado até 60 o Brix e submetido ao processo de cozimento. No caldo original, clarificado e no açúcar produzido, foram quantificados os teores de fósforo, potássio, cálcio, sódio, magnésio, manganês e ferro além do teor de cinzas totais. Os empregos dos extratos de folhas e sementes de moringa se mostraram eficazes no tratamento do caldo destinado à produção de açúcar, por eliminar quantidades significativas de cálcio e ferro em comparação ao polieletrólito sintético. O extrato de folhas foi o melhor auxiliar de sedimentação,quando comparado aos demais.

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Insights to the Clarification of Sugar Cane Juice Expressed from Sugar Cane Stalk and Trash

Cited by 26 publications

References 10 publications

Moringa extracts used in sugarcane juice treatment and effects on ethanolic fermentation

Moringa extracts used in sugarcane juice treatment and effects on ethanolic fermentation

Calcium Phosphate Flocs and the Clarification of Sugar Cane Juice from Whole of Crop Harvesting

Reflexos da clarificação do caldo de cana com moringa sobre compostos inorgânicos do açúcar VHP

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