Fe or Ni Catalytic Hydrothermal Depolymerization with Ethanol for Efficient Anaerobic Digestion of Corn Stover DOI Open Access
Xitong Wang,

Hairong Yuan,

Xiujin Li

и другие.

Catalysts, Год журнала: 2025, Номер 15(5), С. 429 - 429

Опубликована: Апрель 28, 2025

This study investigated the enhancement of anaerobic digestion (AD) performance corn stover (CS) through Fe/Ni catalytic hydrothermal depolymerization with ethanol. The CS process was conducted using Fe/C, Ni/C, Fe/CNT and Ni/CNT catalysts in combination ethanol or water/ethanol solvents. results revealed that catalyst-ethanol (DC-E) effectively disrupted physical encapsulation cellulose by lignin. It also showed catalyst significantly promoted β-O-4 bond cleavage lignin, achieving a lignin conversion rate 48.5% 2.7 g/L total phenol concentration (TPC). (9:1) system degraded hemicellulose (53.6% conversion) while retaining over 90% for AD. Structural analysis DC hydrogen bonds, reducing crystallinity index (CrI decreased from 38.4% to 32.6%) increasing accessibility 909 mg/g (2.6 times higher than untreated CS). efficient obviously improved biodegradability hemicellulose, contributing increase biomethane production. Biomethane yield (BY) E-Ni/CNT 18.1% 27.6% E-HP control group, respectively. These findings indicated ethanol-promoted can enhance

Язык: Английский

Efficient Lignin Precipitation from Softwood Black Liquor Using Organic Acids for Sustainable Valorization DOI Open Access

Elsa Duret,

Luanna Cavalcanti Rebecchi de Moura, Amaia Morales

и другие.

Polymers, Год журнала: 2025, Номер 17(7), С. 926 - 926

Опубликована: Март 29, 2025

The chemical industry's transition towards sustainability necessitates the development of eco-friendly processes that can replace petrochemical derivatives. Lignin, second most abundant plant polymer, has potential as a renewable alternative to phenolic compounds. This study investigates lignin precipitation from softwood black liquor using five organic acids (acetic, citric, lactic, malic, and oxalic) sustainable sulfuric acid. precipitated lignins were subjected comprehensive thermal characterization, revealing higher total content enhanced reactivity when employed. Notably, acid-precipitated demonstrated comparable or superior purity, with ash contents below 0.50%, compared 3.28% observed for lignin. These findings suggest are viable greener precipitation, promoting purity yield, thus supporting valorization efforts.

Язык: Английский

Процитировано

0
Fe or Ni Catalytic Hydrothermal Depolymerization with Ethanol for Efficient Anaerobic Digestion of Corn Stover DOI Open Access
Xitong Wang,

Hairong Yuan,

Xiujin Li

и другие.

Catalysts, Год журнала: 2025, Номер 15(5), С. 429 - 429

Опубликована: Апрель 28, 2025

This study investigated the enhancement of anaerobic digestion (AD) performance corn stover (CS) through Fe/Ni catalytic hydrothermal depolymerization with ethanol. The CS process was conducted using Fe/C, Ni/C, Fe/CNT and Ni/CNT catalysts in combination ethanol or water/ethanol solvents. results revealed that catalyst-ethanol (DC-E) effectively disrupted physical encapsulation cellulose by lignin. It also showed catalyst significantly promoted β-O-4 bond cleavage lignin, achieving a lignin conversion rate 48.5% 2.7 g/L total phenol concentration (TPC). (9:1) system degraded hemicellulose (53.6% conversion) while retaining over 90% for AD. Structural analysis DC hydrogen bonds, reducing crystallinity index (CrI decreased from 38.4% to 32.6%) increasing accessibility 909 mg/g (2.6 times higher than untreated CS). efficient obviously improved biodegradability hemicellulose, contributing increase biomethane production. Biomethane yield (BY) E-Ni/CNT 18.1% 27.6% E-HP control group, respectively. These findings indicated ethanol-promoted can enhance

Язык: Английский

Процитировано

0