Oxidation of Hydrolyzed Lignin from Cotton-Seed Husks by Hydrogen Peroxide

Dalimova, G. N.

doi:10.1007/s10600-005-0081-3

Cited by 10 publications

(3 citation statements)

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“…The results showed that the lignin degradation gradually decreased as the concentration of H 2 O 2 increased. These results are similar to previous studies with varying concentrations of H 2 O 2 [12] [14]. Lignin forms a protective shield around cellulose, guarding it from enzymatic action and at the same time increases the crystallinity of cellulose [15] [16].…”

Section: Peanut Hull-alkaline Pretreatment and Lignin Losssupporting

confidence: 91%

A Comparative Study on the Utilization of Corn Pericarp and Peanut Hull in the Production of Ethanol and the Impact on Food Economics

Herring¹,

Narayanan²

2016

FNS

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Corn pericarp and peanut hull (lignocellulosic materials) which are food industry by-products were used as substrates in this study. Alkaline hydrogen peroxide (H 2 O 2) pretreatments at 0%, 2.5% and 5% were used for the removal of lignin. Simultaneous Saccharification and Fermentation (SSF) and Separate Hydrolysis and Fermentation (SHF) were conducted using Aspergillus niger (strain 201201) and Saccharomyces cerevisiae (strain 26603). Aspergillus niger was added on day 1 to all samples with inoculation treatments of S. cerevisiae at one-day intervals (A = Day 1, B = Day 2, C = Day 3 and D = Day 4). Pretreatment with 2.5% H 2 O 2 was more beneficial in the removal of lignin for both substrates. Corn pericarp yielded an ethanol concentration of 22.2 g/L in C and 21.78 g/L in D of 2.5% H 2 O 2 pretreatment. Peanut hull with 2.5% H 2 O 2 pretreatment in D yielded a higher concentration at 10.38 g/L compared to other inoculation treatments. The highest ethanol yielded on a percentage basis for corn pericarp was 45.04% in C of 2.5% H 2 O 2 pretreatment and 24.6% in D of 2.5% H 2 O 2 pretreatment for peanut hull.

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Section: Peanut Hull-alkaline Pretreatment and Lignin Losssupporting

confidence: 91%

A Comparative Study on the Utilization of Corn Pericarp and Peanut Hull in the Production of Ethanol and the Impact on Food Economics

Herring¹,

Narayanan²

2016

FNS

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“…As an oxidant, it can also be used for oxidizing lignin to introduce carboxylate groups . A study on the oxidation of hydrolyzed nonwood lignin showed that hydrogen peroxide (H 2 O 2 ) treatment of lignin can increase its carboxylate group and thus its water solubility . In another report, the black liquor of Caribbean Pine wood species was oxidized with hydrogen peroxide in the presence of ferrous ion .…”

Section: Introductionmentioning

confidence: 99%

“…16 A study on the oxidation of hydrolyzed nonwood lignin showed that hydrogen peroxide (H 2 O 2 ) treatment of lignin can increase its carboxylate group and thus its water solubility. 17 In another report, the black liquor of Caribbean Pine wood species was oxidized with hydrogen peroxide in the presence of ferrous ion. 18 Since nonwood and wood species have different properties, the value-added products generated from these wood species would respond differently to chemical reactions.…”

Section: ■ Introductionmentioning

confidence: 99%

Oxidation of Kraft Lignin with Hydrogen Peroxide and its Application as a Dispersant for Kaolin Suspensions

Gao

Fatehi

2017

ACS Sustainable Chem. Eng.

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Lignin is an underutilized byproduct of pulping and cellulosic ethanol production plants. However, if utilized efficiently, it can facilitate the development of sustainable processes. In this work, oxidized kraft lignin (OKL) was prepared via treating kraft lignin (KL) with hydrogen peroxide, an environmentally friendly and industrially attractive oxidizing agent, under alkaline conditions. The oxidized kraft lignin with a carboxylate group content of 1.53 mequiv/g was obtained under the optimal oxidation conditions of 80 °C, 2 h treatment, at a 0.77 molar ratio of NaOH/H2O2, and 2.85 molar ratio of H2O2/lignin, which was then employed as an anionic dispersant for kaolin suspensions. The zeta potential, particle size, and specific surface area as well as the relative turbidity and flocculation index of the kaolin suspension were affected by the pH of the suspension. By increasing the dosage of OKL to 40 mg/L, the relative turbidity of the suspension was increased to 1.18 at pH 5 and the kaolin concentration of 4 g/L, which made its performance superior to that of commercially produced lignosulfonate.

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Pistachio (Pistacia vera) shell as a new candidate for enzymatic production of xylooligosaccharides

et al. 2020

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Oxidation of Hydrolyzed Lignin from Cotton-Seed Husks by Hydrogen Peroxide

Abstract: 547.99.992The functional composition and structural porosity of hydrolyzed lignin from cotton-seed husks was altered by oxidation with hydrogen peroxide.

Cited by 10 publications

References 0 publications

A Comparative Study on the Utilization of Corn Pericarp and Peanut Hull in the Production of Ethanol and the Impact on Food Economics

A Comparative Study on the Utilization of Corn Pericarp and Peanut Hull in the Production of Ethanol and the Impact on Food Economics

Oxidation of Kraft Lignin with Hydrogen Peroxide and its Application as a Dispersant for Kaolin Suspensions

Pistachio (Pistacia vera) shell as a new candidate for enzymatic production of xylooligosaccharides

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