Utilization of biomass-based by-product lignin to suppress moisture loss-induced shrinkage of silty soil

Yang, Yuling; Zhang, Tao; Liu, Songyu

doi:10.1016/j.jclepro.2021.129281

Cited by 5 publications

(2 citation statements)

References 48 publications

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“…Bagheri et al 2023 [3] conducted a series of laboratory experiments and reported that adding a lignin biopolymer resulted in higher soil strength. Yang et al [15] investigated the effect of lignin addition on silty soil shrinkage performance and reported that the shrinkage characteristics of lignin-treated silt were influenced by the combined function of lignin cementation and matric suction.…”

Section: Introductionmentioning

confidence: 99%

Mitigation of Soil Erosion and Enhancement of Slope Stability through the Utilization of Lignin Biopolymer

Bagheri,

Gratchev,

Zolghadr

et al. 2024

Polymers

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Human activities have had a profound impact on the environment, particularly in relation to surface erosion and landslides. These processes, which are natural phenomena, have been exacerbated by human actions, leading to detrimental consequences for ecosystems, communities, and the overall health of the planet. The use of lignin (LIG) as a biopolymer soil additive material is regarded as an eco-friendly solution against soil erosion and slope failure which holds immense promise. However, significant research gaps currently hinder a comprehensive understanding of its mechanisms and effectiveness. Experimental studies offer a robust platform to address these gaps by providing controlled conditions for assessing soil stability, exploring mechanisms, and evaluating adaptability. Bridging these research gaps will contribute to the development of innovative and sustainable strategies for mitigating soil erosion and preventing slope failure, thereby promoting environmental resilience and resource conservation. This study aimed to investigate the effect of the LIG biopolymer on mitigation of soil erosion, slope failure and the enhancement of soil strength by conducting laboratory tests (UU triaxial, unconfined compressive strength (UCS), and soaking) as well as flume experiments under uniform rainfall events. The alterations in the engineering characteristics and erosion resistance of silty soil mixed with a LIG additive at concentrations of 1% and 3.0% by weight have been examined. The results show that the LIG-treated samples demonstrated an enhanced resistance to surface erosion and an enhanced prevention of slope failure, as well as improved shear stress, cohesion, stiffness, and resistance to water infiltration.

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Section: Introductionmentioning

confidence: 99%

Mitigation of Soil Erosion and Enhancement of Slope Stability through the Utilization of Lignin Biopolymer

Bagheri,

Gratchev,

Zolghadr

et al. 2024

Polymers

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“…Cellulose's physical, biological, mechanical, and chemical properties make it a good natural material for several bio-based products [9]. However, cellulose comes in complex with lignin (second largest plant-based biomass on earth) [10], hemicellulose, and other natural materials. Lignin is a recalcitrant bio-polymeric, complex-phenolic natural material that acts as structural support for plants, protects cellulose from microbial attack, and forms the xylem and phloem tissues due to their hydrophobic nature [11].…”

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confidence: 99%

Investigating the Ligninolytic Potential of Bacteria Isolated from a Decayed Wood Sample in Egypt

Hotor¹,

Hassanin²,

Yamamoto³

et al. 2023

IJESD

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Lignin is a natural polyphenol material found in complex with cellulose and hemicellulose in every terrestrial and some aquatic plant species. They are recalcitrant and prevent easy access to cellulose; an energy-rich, versatile, promising biomaterial for several eco-friendly and cheap products. The lignin-degrading potential of microbes isolated from degraded wood in an environment in Egypt was investigated. In this study, four bacteria were screened using a methylene blue decolorization test, growth on media with lignin as carbon source, and cellulolytic screening using CMC-Congo red test. The screened isolates were used to treat sorghum stem stalks to ascertain the level of degradation of the lignin content. The four bacterial isolates were positive to the decolorization of methylene blue with percentage decolorization: (23%, 8%, 34%, and 24%) after 24 hrs. respectively. Similarly, the four isolates were able to grow on minimal salt media with lignin as carbon source. The optical densities values measured ranged from (0.030–0.165, −0.040–0.080, 0.040–0.121, −0.039–0.054) after 12 h for the four bacterial isolates, respectively. Also, the four bacterial isolates showed negative results for the cellulase test. FT-IR spectrum for the bacterial-treated sorghum stalks revealed a reduction in peaks at wavelengths indicative of lignin functional groups. Similarly, proximate analysis of the lignocellulose content after treatment recorded were extractives (E) (9, 9, 13.5, 9.5, and 10) %, hemicellulose content (H) (29.5, 26.0, 31, 26, and 30) %, Klason lignin (L) (39, 31, 33, 24, and 26) %, and cellulose (C) (22.2, 33.5, 21.3, 40.5, and 33.5) % for control and the four bacterial isolates, respectively. The p-values estimated from the average values for the extractive and hemicellulose content were not significantly different, whiles that of Lignin and Cellulose was significantly different. The four bacterial isolates showed potential for having ligninolytic enzymes for lignin depolymerization.

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Behavioral evaluation on the engineering properties of lignin-stabilized loess: Reuse of renewable materials

Dong

Huang

Zhang

et al. 2023

Construction and Building Materials

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Utilization of biomass-based by-product lignin to suppress moisture loss-induced shrinkage of silty soil

Cited by 5 publications

References 48 publications

Mitigation of Soil Erosion and Enhancement of Slope Stability through the Utilization of Lignin Biopolymer

Mitigation of Soil Erosion and Enhancement of Slope Stability through the Utilization of Lignin Biopolymer

Investigating the Ligninolytic Potential of Bacteria Isolated from a Decayed Wood Sample in Egypt

Behavioral evaluation on the engineering properties of lignin-stabilized loess: Reuse of renewable materials

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