Deep‐eutectic‐solvent‐assisted hydrothermal carbonization of sewage sludge for green wood bioadhesive production DOI
Zhixiang Xu, Rui Dou, Yi Tan

et al.

Biofuels Bioproducts and Biorefining, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 17, 2024

Abstract This study reports the use of deep‐eutectic‐solvent‐ (DES‐) assisted hydrothermal carbonization (HTC) to disrupt floc structure sewage sludge (SS) for deep carbonization, with resulting hydrochars employed in preparation formaldehyde‐free plywood bioadhesives. Sewage‐sludge‐based bioadhesive exhibits an excellent wet shear strength, complying requirements Chinese national standard GB/T 9846–2015 (≥0.7 MPa). The molecular weight proteins and formation covalent bonds via dehydration have a notable role improving adhesive performance (wet strength). Maillard reaction is key during HTC destroy secondary proteins, release more OH NH 2 . main hot‐press treatment dehydration. High ash content bioadhesives improves flame resistance potential, particularly on addition DES. A plausible mechanism proposed this. work provides new method valorization SS‐derived contributes development greener wood

Language: Английский

Formaldehyde-free wood bio-adhesives from sewage sludge: Role of ammonium polyphosphate DOI

Han-Song Zhu,

Yi Tan,

Xiaobin Dong

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 159805 - 159805

Published: Jan. 1, 2025

Language: Английский

Citations

1
Hydrothermal Liquefied Bio-Oil from Municipal Sewage Sludge as a Reactive Filler in Polymeric Diphenylmethane Diisocyanate (p-MDI) Wood Adhesives DOI Open Access
Archana Bansode, Tawsif Rahman,

Lucila Carias

et al.

Sustainability, Journal Year: 2025, Volume and Issue: 17(3), P. 1318 - 1318

Published: Feb. 6, 2025

The growing environmental concerns associated with petrochemical-based adhesives have driven interest in sustainable alternatives. This study investigates the use of bio-oil, derived from municipal sewage sludge (MSS) through hydrothermal liquefaction (HTL), as a reactive filler polymeric methylene diphenyl diisocyanate (pMDI) wood adhesives. rich hydroxyl and carbonyl functional groups, was characterized using FTIR (Fourier transform infrared spectroscopy), elemental analysis, NMR (nuclear magnetic resonance). These groups interact isocyanate pMDI, enabling crosslinking enhancing adhesive performance. Various MSS bio-oil pMDI formulations were evaluated for tensile shear strength on Southern yellow pine veneers under dry wet conditions. formulation 1:4 to weight ratio exhibited best performance, achieving strengths 1.96 MPa (dry) 1.66 (wet). Higher content led decreased strength, attributed reduced increased moisture sensitivity. demonstrates potential MSS-derived additive adhesives, offering benefits without significantly compromising performance marking step toward greener solutions.

Language: Английский

Citations

1
Green wood bio-adhesives from cellulose-derived bamboo powder hydrochars DOI
Yongxing Chen,

Han-Song Zhu,

Fan Gao

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: unknown, P. 155667 - 155667

Published: Sept. 1, 2024

Language: Английский

Citations

5
Innovative Synergistic Deep Dewatering of Municipal Sludge Using Coupled Piezoelectric Materials and Mechanical Filtration DOI
Binqi Rao, Yulin Li, Yan Zhang

et al.

Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: unknown, P. 115600 - 115600

Published: Jan. 1, 2025

Language: Английский

Citations

0
Valorization of sewage sludge organic matter for polyacrylamide-based greener hydrogel production with good salt resistance and high permeability DOI
Fan Gao, Lijian Leng, Huan Yang

et al.

Colloids and Surfaces A Physicochemical and Engineering Aspects, Journal Year: 2025, Volume and Issue: unknown, P. 136418 - 136418

Published: Feb. 1, 2025

Language: Английский

Citations

0
Hydrochar‐Based Wood Bio‐Adhesives from Sewage Sludge: The Role of Sodium Periodate Oxidation DOI
Rui Dou, Fan Gao, Wenxue Jiang

et al.

Advanced Sustainable Systems, Journal Year: 2025, Volume and Issue: unknown

Published: April 1, 2025

Abstract The development of technologies for replacing formaldehyde‐based adhesives and disposing sewage sludge (SS) are two standing issues high interest to the academy industry. This study reports production formaldehyde‐free wood bio‐adhesive using hydrochar from hydrothermal carbonization SS aided by sodium periodate (NaIO4) oxidation. performance bio‐adhesives can meet requirements Chinese National Standard GB/T 9846‐2015 (≥0.7 MPa). aldehyde group forms after NaIO4 treatment hydrochar, which should benefit adhesion performance. However, oxidation process also breaks some polysaccharides' carbon chains, disrupting extracellular polymeric substances (EPS) structure in forming small molecular compounds. As a result, wet shear strength value decreases, but water resistance increases. Nevertheless, interaction between active functional groups (e.g., amine groups) during hot‐pressing promotes In addition, doping polyethyleneimine, cross‐linked network be further enhanced, improving resistance. Hence, introducing is key step bio‐adhesives, proving as novel practical approach valorize producing adhesives.

Language: Английский

Citations

0
Deep‐eutectic‐solvent‐assisted hydrothermal carbonization of sewage sludge for green wood bioadhesive production DOI
Zhixiang Xu, Rui Dou, Yi Tan

et al.

Biofuels Bioproducts and Biorefining, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 17, 2024

Abstract This study reports the use of deep‐eutectic‐solvent‐ (DES‐) assisted hydrothermal carbonization (HTC) to disrupt floc structure sewage sludge (SS) for deep carbonization, with resulting hydrochars employed in preparation formaldehyde‐free plywood bioadhesives. Sewage‐sludge‐based bioadhesive exhibits an excellent wet shear strength, complying requirements Chinese national standard GB/T 9846–2015 (≥0.7 MPa). The molecular weight proteins and formation covalent bonds via dehydration have a notable role improving adhesive performance (wet strength). Maillard reaction is key during HTC destroy secondary proteins, release more OH NH 2 . main hot‐press treatment dehydration. High ash content bioadhesives improves flame resistance potential, particularly on addition DES. A plausible mechanism proposed this. work provides new method valorization SS‐derived contributes development greener wood

Language: Английский

Citations

3