Acid-based organosolv lignin extraction from wheat straw: Kinetic and structural analysis

Labauze, Hélène; Cachet, Nadja; Benjelloun-Mlayah, Bouchra

doi:10.1016/j.indcrop.2022.115328

Cited by 16 publications

(4 citation statements)

References 23 publications

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“…According to the 13 C NMR spectrum, the chemical shift at 56 ppm belongs to −CH 3 on the methoxy group, while those around 64, 72, and 80 ppm, respectively, belong to C α , C β , and C γ in β-O-4. The chemical shift at around 103 and 133 ppm may belong to the S structural unit, around 110 and 150 ppm may belong to the G structural unit, and 170 ppm may belong to the C–O in the primary alcohol or −COOH. , When EDA and VB 1 attacked the carbonyl and carboxyl groups on lignin with nucleophilic amines, a chemical shift belonging to −C-N– appeared at around 50 ppm, and a peak belonging to the amide groups (−CO-NH 2 –) appeared at 168 ppm. , The change in the carboxyl group intensity at 170 ppm also indicates the successful synthesis of LEV.…”

Section: Resultsmentioning

confidence: 99%

Preparation of Vitamin-g-Lignin Nanohybrids with Excellent Biological Activity and Fluorescence Performance

Yang,

Zhang,

Zhang

et al. 2024

Biomacromolecules

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Section: Resultsmentioning

confidence: 99%

Preparation of Vitamin-g-Lignin Nanohybrids with Excellent Biological Activity and Fluorescence Performance

Yang,

Zhang,

Zhang

et al. 2024

Biomacromolecules

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“…Metode organosolv yang menggunakan pelarut organik seperti metanol, telah terbukti efektif dalam mengisolasi lignin dari berbagai sumber lignoselulosa (Florian et al, 2019). Metode organosolv telah digunakan untuk mengekstrak lignin dari Jerami menggunakan pelarut organik berbasis asam (Labauze et al, 2022). Isolasi lignin dari tandan kosong kelapa sawit telah banyak dilakukan salah satunya dengan menggunakan pelarut basa pada tekanan dan suhu tinggi (Prakoso et al, 2016).…”

Section: Pendahuluanunclassified

Pengaruh Suhu Terhadap Ekstraksi Lignin Dari Batang Pohon Kelapa Sawit Menggunakan Metode Organosolve

Kusuma

2024

IONTech

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Lignin merupakan salah satu penyusun biomassa selain selulosa dan hemiselulosa yang bisa didapatkan dari pohon kelapa sawit. Indonesia merupakan sumber pengasil minyak dan perkebunan kelapa sawit terbesar. Hal tersebut menjadikan pohon kelapa sawit yang sudah tidak produktif dapat dimanfaatkan sebagai sumber lignin. Pemanfaatan lignin memiliki potensi yang besar untuk dimanfaatkan untuk sumber karbon material maupun sebagai tambahan sumber C-organik untuk pupuk. Penelitian ini bertujuan untuk mengetahui pengaruh suhu ekstraksi menggunakan metanol untuk proses esktraksi lignin. Proses ekstraksi dilakukan pada variasi suhu 130, 140 dan 150 oC. Lignin yang diperoleh dikarakterisasi dengan Fourier Transform Infrared Spectroscopy (FTIR) dan dianalisis kandungannya menggunakan metode Kalson. Karakterisasi FTIR menunjukkan adanya gugus fungsional lignin pada bilangan gelombang 1710 dan 1605 cm-1. Hasil ekstraksi menunjukkan semakin meningkatnya suhu ekstraksi maka kandungan lignin semakin meningkat. Kandungan lignin yang tertinggi didapatkan pada suhu 150 oC sebesar 46, 093%.

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“…Improving acetone organosolv fractionation is challenging due to the trade-off between yields and product quality. , Notably, as most hemicellulose and lignin solubilization takes place in the early stages of fractionation, − batchwise processing results in long residence times of solubilized hemicellulose sugars and lignin in the hot liquor, leading to increased degradation of these products.…”

Section: Introductionmentioning

confidence: 99%

Semicontinuous Aqueous Acetone Organosolv Fractionation of Lignocellulosic Biomass: Improved Biorefinery Processing and Output

Smit,

Hoek,

Bonouvrie

et al. 2024

ACS Sustainable Chem. Eng.

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Aqueous acetone organosolv fractionation of the lignocellulosic biomass using a batchwise operation is a robust technology option to produce cellulose, sugars, and lignin. Such fractionation is typically characterized by fast solubilization of most of the lignin and hemicellulose sugars in the early stages of the process, gradually followed by slower removal of the remaining, more recalcitrant part at later stages. As a result, most of the solubilized sugars and lignin experience a relatively long residence time in the hot liquor, leading to undesired sugar degradation and lignin depolymerization-condensation reactions. A lab-scale, semicontinuous countercurrent flow fractionation design is presented here as a solution to this issue and studied as an intermediate step toward an envisioned scaled-up design involving a series of percolation reactors coupled for liquid exchange. Counter-current semicontinuous processing (SCP) reduces the overall residence time of the solubilized sugars and lignin. While even slightly improving on fractionation performance, i.e., sugar and lignin solubilization, most importantly, SCP resulted in less sugar degradation and more hemicellulose oligomers compared to the simple batch process. SCP lignin proved to be of higher quality with increased β-O-4 content and, consequently, a higher abundance of lignin aliphatic hydroxyl groups, less formation of Hibbert ketones, and reduced condensation. The more native nature of the lignin is reflected in its improved reactivity in reductive partial depolymerization to lower molar mass and dispersity lignin building blocks. Overall, SCP thus provides a powerful and scalable strategy for improving the efficiency and effectiveness of aqueous acetone organosolv fractionation.

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Acid-based organosolv lignin extraction from wheat straw: Kinetic and structural analysis

Cited by 16 publications

References 23 publications

Preparation of Vitamin-g-Lignin Nanohybrids with Excellent Biological Activity and Fluorescence Performance

Preparation of Vitamin-g-Lignin Nanohybrids with Excellent Biological Activity and Fluorescence Performance

Pengaruh Suhu Terhadap Ekstraksi Lignin Dari Batang Pohon Kelapa Sawit Menggunakan Metode Organosolve

Semicontinuous Aqueous Acetone Organosolv Fractionation of Lignocellulosic Biomass: Improved Biorefinery Processing and Output

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