Cleaning carbohydrate impurities from lignin using<i>Pseudomonas fluorescens</i>

Ghosh, Tanushree; Ngo, Tri-Dung; Kumar, Aloke; Ayranci, Cagri; Tang, Tian

doi:10.1039/c8gc03341b

Cited by 30 publications

(33 citation statements)

References 95 publications

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“…It was then bio-cleaned using the same method described in our previous work. 34 Bio-KLA contains 57% less carbohydrates and 87% less ash compared with KLA. 34 Both KLA and Bio-KLA was vacuum dried at 100 C before sample preparation for electrospinning.…”

Section: Biomass and Chemicalsmentioning

confidence: 97%

“…34 Bio-KLA contains 57% less carbohydrates and 87% less ash compared with KLA. 34 Both KLA and Bio-KLA was vacuum dried at 100 C before sample preparation for electrospinning. Other chemicals such as poly(ethylene oxide) (PEO) and anhydrous N,N-dimethyleformamide (DMF) were purchased from Sigma Aldrich, Canada.…”

Section: Biomass and Chemicalsmentioning

confidence: 97%

“…25 Regardless of the manufacturing techniques, lignin needs to be puried. Several lignin purication and fractionation techniques including acid precipitation, 26 organosolv technique, 25,[27][28][29] ionic liquid technologies, 30,31 green liquor process 32,33 and biodegradation [34][35][36][37] were adopted to obtain clean lignin to be used as CF precursor. Commercially available kra lignin (Indulin-AT), organosolve lignin (Alcell™) were reported to be used for the production of carbon bers by many researchers.…”

Section: Introductionmentioning

confidence: 99%

“…In contrast, biodegradation or bio-cleaning of waste lignin was found to be a comparatively effective, environmentally sustainable and low-cost technique. 34,48,49 The puried lignin can be fabricated into bers with submicron diameter. 10,21,[50][51][52][53] Due to its simplicity and tailorability, electrospinning is oen utilized to produce bers with sub-micron to nanoscale diameters that have high surface area.…”

Section: Introductionmentioning

confidence: 99%

“…In a recent work, we demonstrated the success of using Pseudomonas uorescens to bio-clean Kra lignin A (KLA) by selectively degrading carbohydrate impurities, leading to puried form of KLA (Bio-KLA). 34 The present work explores the possibility of using the bio-cleaned lignin to produce CF precursors and CF. Here, both lignin samples (KLA and Bio-KLA) were used for lignin-based CF preparation by electrospinning lignin/PEO solution in N,Ndimethyleformamide (DMF).…”

Section: Introductionmentioning

confidence: 99%

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Bio-cleaning improves the mechanical properties of lignin-based carbon fibers

et al. 2020

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Section: Biomass and Chemicalsmentioning

confidence: 97%

Section: Biomass and Chemicalsmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Bio-cleaning improves the mechanical properties of lignin-based carbon fibers

et al. 2020

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Bio‐cleaned lignin‐based carbon fiber and its application in adsorptive water treatment

Chen

Ghosh

Ayranci

et al. 2021

J of Applied Polymer Sci

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Although an agricultural byproduct, lignin can be a felicitous choice serving as a carbon fiber precursor upon bio-cleaning with Pseudomonas fluorescence. In this study, carbon fiber produced from electrospun bio-cleaned lignin (Bio-KLB) was demonstrated to be a novel efficient adsorbent for methylene blue in wastewater treatment. Bio-cleaning effectively changed lignin from unelectrospinnable to easily-electrospinnable by removing impurities. Bio-KLB carbon fiber mats showed average fiber diameter of 278.95 ± 49.89 nm, and randomly dispersed fiber mats showed average elastic modulus of 1532.87 ± 439.63 MPa and tensile strength of 16.72 ± 5.21 MPa. Adsorption of methylene blue on Bio-KLB carbon fibers was analyzed at pH = 9, where optimal adsorption and decent reusability were observed. Kinetic adsorption was fitted well with pseudo-first-order model while adsorption isotherms were fitted to both Langmuir and Freundlich models. The highest adsorption capacity was 548.65 mg/g based on Langmuir model. The results provide clear evidence that electrospun bio-cleaned lignin-based carbon fibers can be a strong alternative material for dye treatment.

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Optimization of high‐quality carbon fiber production from electrospun aligned lignin fibers

Chen

Ghosh

Tang

et al. 2022

Polymer Engineering & Sci

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In recent years, investigating lignin as an alternative carbon fiber precursor has received immense research attention as a way to reduce the cost and replace the unsustainable conventional petroleum-based precursors for carbon fiber production. The predominant challenge for lignin-based carbon fibers is its low mechanical performance compared to conventional ones. In this work, mechanical properties of electrospun lignin carbon fiber mats were shown to be considerably enhanced via alignment of the submicron fibers. Over 60% of the fibers were aligned via a rotating drum collector utilized during fiber production. The main electrospinning parameters, namely electric field, rotating speed, and flow rate were optimized with the Box-Behnken method to enhance mechanical properties with reduced fiber diameter and improved fiber alignment. The optimal electrospinning process parameter was achieved at 2000 rpm collection speed, 80 kV/m electric field, and 440 nl/s flow rate. The lignin carbon fibers produced under the optimized condition exhibited elastic modulus of 3145.47 ± 917.75 MPa, tensile strength of 18.78 ± 6.11 MPa, and average fiber diameter of 697.07 ± 96.41 nm. The analysis on the interactions between electrospinning parameters has laid a solid foundation for the production of high-quality carbon fibers from lignin precursor.

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Cleaning carbohydrate impurities from lignin usingPseudomonas fluorescens

Abstract: A bio-based process for selective degradation of carbohydrate impurities from waste lignin was achieved using Pseudomonas fluorescens as a green cleaner.

Cited by 30 publications

References 95 publications

Bio-cleaning improves the mechanical properties of lignin-based carbon fibers

Bio-cleaning improves the mechanical properties of lignin-based carbon fibers

Bio‐cleaned lignin‐based carbon fiber and its application in adsorptive water treatment

Optimization of high‐quality carbon fiber production from electrospun aligned lignin fibers

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