Solid acid catalysts pretreatment and enzymatic hydrolysis of macroalgae cellulosic residue for the production of bioethanol

Tan, Inn Shi

doi:10.1016/j.carbpol.2015.02.046

Cited by 48 publications

(34 citation statements)

References 45 publications

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“…In addition, the enzyme loading in our study was is lower than that of Tan and Lee (2015). Further, we also observed xylose in our research (Table 3).…”

Section: Technical Notesupporting

confidence: 52%

“…The authors observed a glucose yield of 94% even after fifth reuse of the catalyst. Although our glucose is lower when compared to Tan and Lee (2015), it may be noted that the feedstock employed by the authors, i.e., macroalgae cellulosic residue did not contain lignin.…”

Section: Technical Notementioning

confidence: 72%

“…However, at higher temperature (160°C for 2 h) xylose yields were observed to be 0.3% and 1.2% from PFS and AS catalysts respectively (Wang et al, 2012). In addition, Tan and Lee (2015) reported 0.77 g glucose (glucose yield of 0.77%) in the pre-treatment liquid, when 100 g of macroalgae cellulosic residue was treated using Dowex (TM) Dr-G8 solid acid catalyst.…”

Section: Effect Of Regular and Magnetic Catalytic Pre-treatment On Sumentioning

confidence: 99%

“…However, the hydrolysis yields for switchgrass was similar for both reuses (53.86%, P=0.42). Recently, Tan and Lee (2015) reported the use of solid acid catalyst (Dowex (TM) Dr-G8) to treat macroalgae cellulosic residue at 120°C for 30 min followed by enzymatic hydrolysis for 30 h using 45 FPU g -1 of cellulase and 52 CBU g -1 of β-glucosidase. The authors observed a glucose yield of 94% even after fifth reuse of the catalyst.…”

Section: Technical Notementioning

confidence: 99%

“…The study also reported that as pre-treatment temperature increased to 180°C, the yield of glucose increased reached the maximum of 90%. In a different study, macroalgae cellulose residue was treated used Dowex (TM) Dr-G8 solid catalyst followed by enzymatic hydrolysis where two enzymes were employed (45 FPU (filter paper unit)) g -1 of cellulase and 52 CBU (cellobiase unit) g -1 of β-glucosidase) to produce glucose yield at around 94% even after 5 reuses (Tan and Lee, 2015). Our group at North Carolina State University is also interested in synthesis and testing of solid acid catalysts for biomass processing.…”

Section: Introductionmentioning

confidence: 99%

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Pre-treatment of biomasses using magnetised sulfonic acid catalysts

Ansanay

Kolar

Sharma-Shivappa

et al. 2017

J Agricult Engineer

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There is a significant interest in employing solid acid catalysts for pre-treatment of biomasses for subsequent hydrolysis into sugars, because solid acid catalysts facilitate reusability, high activity, and easier separation. Hence the present research investigated pretreatment of four lignocellulosic biomasses, namely Switchgrass (Panicum virgatum L 'Alamo'), Gamagrass (Tripsacum dactyloides), Miscanthus (Miscanthus × giganteus) and Triticale hay (Triticale hexaploide Lart.) at 90°C for 2 h using three carbon-supported sulfonic acid catalysts. The catalysts were synthesized via impregnating p-Toluenesulfonic acid on carbon (regular) and further impregnated with iron nitrate via two methods to obtain magnetic A and magnetic B catalysts. When tested as pre-treatment agents, a maximum total lignin reduction of 17.73±0.63% was observed for Triticale hay treated with magnetic A catalyst. Furthermore, maximum glucose yield after enzymatic hydrolysis was observed to be 203.47±5.09 mg g -1 (conversion of 65.07±1.63%) from Switchgrass treated with magnetic A catalyst. When reusability of magnetised catalysts were tested, it was observed that magnetic A catalyst was consistent for Gamagrass, Miscanthus × Giganteus and Triticale hay, while magnetic B catalyst was found to maintain consistent yield for switchgrass feedstock. Our results suggested that magnetised solid acid catalyst could pre-treat various biomass stocks and also can potentially reduce the use of harsh chemicals and make bioenergy processes environment friendly.

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“…In addition, the enzyme loading in our study was is lower than that of Tan and Lee (2015). Further, we also observed xylose in our research (Table 3).…”

Section: Technical Notesupporting

confidence: 52%

Section: Technical Notementioning

confidence: 72%

Section: Effect Of Regular and Magnetic Catalytic Pre-treatment On Sumentioning

confidence: 99%

Section: Technical Notementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Pre-treatment of biomasses using magnetised sulfonic acid catalysts

Ansanay

Kolar

Sharma-Shivappa

et al. 2017

J Agricult Engineer

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A New Wave of Research Interest in Marine Macroalgae for Chemicals and Fuels: Challenges and Potentials

Baghel

Mantri

Reddy

2017

Fuels, Chemicals and Materials From the Oceans and Aquatic Sources

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Hydrolysis of Lipid‐Extracted Chlorella vulgaris by Simultaneous Use of Solid and Liquid Acids

Seon

Joo

Kim

et al. 2018

Biotechnology Progress

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Microalgal biomass was hydrolyzed using a solid acid catalyst with the aid of liquid acid. The use of solid acid as the main catalyst instead of liquid acid was to omit subsequent neutralization and/or desalination steps, which are commonly required in using the resulting hydrolysates for microbial fermentation. The hydrolysis of 10 g/L of lipid‐extracted Chlorella vulgaris containing 12.2% carbohydrates using 7.6 g/L Amberlyst 36 and 0.0075 N nitric acid at 150°C resulted in 1.08 g/L of mono‐sugars with a yield of 88.5%. For hydrolysis of higher concentrations of the biomass over 10 g/L, the amount of Amberlyst 36 needed to be increased in proportion to the biomass concentration to maintain similar levels of hydrolysis performance. Increasing the solid acid concentration protected the surface of the solid acid from being severely covered by cell debris during the reaction. A hydrolysate of lipid‐extracted C. vulgaris 50 g/L was used, with no post‐treatment of desalination, for the cultivation of Klebsiella oxytoca producing 2,3‐butanediol. Cell growth in the hydrolysate was found to be almost the same as in the conventional medium with the same monosaccharide composition, confirming its fermentation compatibility. It was noticeable that the yield of 2,3‐butanediol with the hydrolysate was observed to be 2.6 times higher than that with the conventional medium. © 2018 American Institute of Chemical Engineers Biotechnol. Prog., 35: e2729, 2019

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Solid acid catalysts pretreatment and enzymatic hydrolysis of macroalgae cellulosic residue for the production of bioethanol

Cited by 48 publications

References 45 publications

Pre-treatment of biomasses using magnetised sulfonic acid catalysts

Pre-treatment of biomasses using magnetised sulfonic acid catalysts

A New Wave of Research Interest in Marine Macroalgae for Chemicals and Fuels: Challenges and Potentials

Hydrolysis of Lipid‐Extracted Chlorella vulgaris by Simultaneous Use of Solid and Liquid Acids

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