Novel strategy using an adsorbent-column chromatography for effective ethanol production from sugarcane or sugar beet molasses

Hatano, Ken-ichi; Kikuchi, Satoshi; Nakamura, Yohei; Sakamoto, Hironobu; Takigami, Machiko; Kojima, Yukio

doi:10.1016/j.biortech.2009.04.063

Cited by 30 publications

(14 citation statements)

References 11 publications

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“…The effluent streams of these industries are extremely colored and have high organic load. The spent wash is characterized as a waste effluent having very high chemical oxygen demand (COD) (65,000-130,000 mg/l) and biochemical oxygen demand (BOD 5 ) (30,000-96,000 mg/l), acidic pH (4)(5), bad smell and dark brown color [9]. The main colored compounds that are developed during sugar processing can be categorized into three major groups of melanins, melanoidins and caramels [10].…”

Section: Introductionmentioning

confidence: 99%

“…Bioethanol can be produced from various feedstocks such as sugarcane residues, corn stoves, wood wastes and agricultural residues [3]. Among all these resources, sugar-based residues contain fermentable sugar and are appropriate for ethanol production; whereas, the other resources require additional pretreatment processes to become fermentable sugar [4].…”

Section: Introductionmentioning

confidence: 99%

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Removal of melanoidin from molasses spent wash using fly ash-clay adsorbents

Ramezani

Darzi

Mohammadi

2011

Korean J. Chem. Eng.

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Removal of melanoidin pigment from molasses spent wash was investigated using a new adsorbent. Solid adsorbents were fabricated from charcoal fly ash and clay. The effect of various molasses concentration (6 to 12 g/l) on removal efficiency was studied. The obtained results revealed that maximum removal efficiency of 82% was achieved at the molasses concentration of 6 g/l and contact time of 7 h. The saturated porous adsorbents were regenerated and reused to conduct similar experiments. The achieved data showed that more than 90% of the capacity of the fresh adsorbent was recovered after regeneration. Various adsorption isotherms of Langmuir, Freundlich, Temkin and HarkinsJura were applied to interpret the obtained experimental data. The obtained results revealed that the sorption data were well described by the Harkins-Jura model. Also, various kinetic models of pseudo-first order, pseudo-second order, Elovich and intra-particle diffusion were used to predict the characteristic parameters which are useful in process design. It was concluded that the best fit was obtained with pseudo-second order kinetic model at low molasses concentrations.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Removal of melanoidin from molasses spent wash using fly ash-clay adsorbents

Ramezani

Darzi

Mohammadi

2011

Korean J. Chem. Eng.

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“…In the Americas, Brazil (from sugar cane) and the U.S. (from maize) are the major ethanol producers and users. Globally, there is a strong interest in Asia in the use of sugar beet as one of a number of potential bioethanol feedstocks-Turkey (Içöz et al 2009), Japan (Hatano et al 2009;Koga et al 2009;Koga 2008) China (Tian et al 2009), and India (Srivastava et al 2008). Because storing the harvested roots is a large impediment to using sugar beet as a bioethanol feedstock, climates where sugar beet can be cultivated both as spring or fall sown crops, will be the most attractive areas for biofuel production because the crop can be harvested daily most of the year.…”

Section: Future Needs and Developmentsmentioning

confidence: 99%

Sugar Beet as an Energy Crop

Panella

2010

Sugar Tech

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The combination of volatility in the oil market and finite oil resources and the effect on global climate change from the addition of CO 2 to the atmosphere as a result of burning fossil fuels has increased the interest in sustainable energy generation from renewable biofuels. Most 1st generation biofuels in current production are liquid with bioethanol the product of fermentation. Sugar beet provides an abundance of sucrose, which is easily fermented by many microbes and on a per hectare basis; sugar beet is one of the most efficient sources of ethanol, however storage of harvested roots is problematic. Most studies have indicated sustainable biofuels have reduced greenhouse gas emissions (GHG) when compared to petroleum based fuels. Bioethanol from sugar beet reduces GHG comparably or superiorly to maize or sugarcane. There also are other biofuels from fermentation, including biomethanol, biobutanol ETBE, biomethane, and biohydrogen, many of which are more energy dense than ethanol. Storage of sugar beet is a problem that could be solved by ensilage and anaerobic digestion producing a biogas, which could yield more energy per hectare than bioethanol. As the global economy moves away from fossil fuels, sugar beet will play an increasing role in the adoption of more sustainable energy generation.

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“…Hence, prior to its release into the water environment, an additional decolorization pretreatment is necessary. Some attempts to decolorize or remove the pigments by microbial treatment (Pant and Adholeya, 2007;Watanabe et al, 2010), chemical treatment (Peña et al, 2003) and chromatographic separation techniques (Hatano et al, 2007;Hatano et al, 2008) have been reported. Among them, adsorptive chromatographic separation has an advantage over the other methods due to the retrievability of colorants without their strong denaturation.…”

Section: Introductionmentioning

confidence: 99%

“…The distillery wastewater discharged from the bioethanol plant is a dark brown-colored effluent and can cause serious problems in wastewater treatment (Okushima et al, 2006). Generally, this distillery wastewater contains a high concentration of organics (mostly organic acid, which makes wastewater acidic) and dark-brown pigments, and is characterized by a high chemical oxygen demand (COD) (more than 100,000 mg/L) and high biochemical oxygen demand (BOD) (more than 40,000 mg/L) (Hatano et al, 2007). To reduce both COD and BOD values, the distillery wastewater can be subjected to methane fermentation (anaerobic) and activated sludge treatment (aerobic); however, such conventional wastewater treatment systems have little effect in terms of decolorization of the dark -408 -brown pigments (Guimarães et al, 1999).…”

Section: Introductionmentioning

confidence: 99%

Separation and Functional Evaluation of Dark Brown Colorants in Distillery Wastewater from a Sugarcane-Molasses-Derived Bioethanol Production Process

Sakaki

Habe

Ikegami

et al. 2014

J. of Wat. ^|^ Envir. Tech.

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Bioethanol is an important renewable resource that facilitates the sustainable development of society. In Miyako Island, Okinawa Prefecture, bioethanol is produced from sugarcane molasses, but molasses-based distillery wastewater is a highly polluted and dark brown-colored effluent that can cause serious problems in wastewater treatment. In a trial of seven adsorbents to investigate the separation of the colorants from wastewater, Diaion HP20 was selected as the most suitable adsorbent. Adsorbing and desorbing operations using column chromatography with HP20 recovered 74.5% of the colorants from wastewater (33.7 and 40.8% for 20 and 50% ethanol-eluted fractions, respectively). The isolated colorants as well as the wastewater itself exhibited scavenging activity against 1,1-diphenyl-2-picrylhydrazyl (DPPH), and contained polyphenols. The distillery wastewater contained 11.3 g-tocopherol equivalent/L of DPPH radical-scavenging constituents and 7.66 g-catechin equivalent/L of polyphenol constituents.

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Novel strategy using an adsorbent-column chromatography for effective ethanol production from sugarcane or sugar beet molasses

Cited by 30 publications

References 11 publications

Removal of melanoidin from molasses spent wash using fly ash-clay adsorbents

Removal of melanoidin from molasses spent wash using fly ash-clay adsorbents

Sugar Beet as an Energy Crop

Separation and Functional Evaluation of Dark Brown Colorants in Distillery Wastewater from a Sugarcane-Molasses-Derived Bioethanol Production Process

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