Progress in lignin hydrogels and nanocomposites for water purification: Future perspectives

Thakur, Sourbh; Govender, Penny Poomani; Mamo, Messai A.; Tamulevičius, Sigitas; Mishra, Yogendra Kumar; Thakur, Vijay Kumar

doi:10.1016/j.vacuum.2017.08.011

Cited by 145 publications

(63 citation statements)

References 103 publications

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“…No doubt, biodegradable plastics are environment-friendly but they also came with some limitations like high manufacturing cost and low mechanical tendency [13][14][15]. The decrease in the availability of gasoline and diesel due to the increase in cost increases the scarcity of resources which promotes the need for alternative methods of creating bioplastic [16].…”

Section: Figure 1 Schematic Representation For Degradation Of Bioplamentioning

confidence: 99%

Sustainability of bioplastics: Opportunities and challenges

Thakur

Chaudhary

Sharma

et al. 2018

Current Opinion in Green and Sustainable Chemistry

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217

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Recycling is groundwork of the worldwide efforts to diminish the amount of plastics in waste. Mostly around 7.8-8.2 million tons of poorly-used plastics enter the oceans every year. Nonbiodegradable plastics settlements in landfills are uncertain, which hinders the production of land resources. Non-biodegradable plastic solid wastes, carbon dioxide, greenhouse gases, various air pollutants, cancerous polycyclic aromatic hydrocarbons and dioxins, released to the environment cause severe damage and harmfulness to the inhabitants. Due to the bio-degradability and renewability of biopolymers, petroleum-based plastics can be replaced with bio-based polymers in order to minimize the environmental risks. In this review article, bio-degradability of polymers has been discussed. The mechanisms of bio-recycling have been particularly emphasized in the present article.

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Section: Figure 1 Schematic Representation For Degradation Of Bioplamentioning

confidence: 99%

Sustainability of bioplastics: Opportunities and challenges

Thakur

Chaudhary

Sharma

et al. 2018

Current Opinion in Green and Sustainable Chemistry

Self Cite

217

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“…proposed to be a very good candidate in medicine and health maintenance as antimicrobials [29][30][31][32]. They are attractive candidate in hydrogels as multipurpose materials for extensive applications in different fields [33,34]. In our recent work, we have shown that dehydrogenative polymer of coniferyl alcohol (DHP), enzymatically synthesized lignin model compound from coniferyl alcohol (CA), in a hydrogel with alginate showed a strong antibacterial activity, peculiarly against Pseudomonas aeruginosa, Listeria monocytogenes, Staphylococcus aureus and Salmonella typhimurium [35].…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Bacterial cellulose-lignin composite hydrogel as a promising agent in chronic wound healing

Zmejkoski

Spasojević

Orlovska

et al. 2018

International Journal of Biological Macromolecules

120

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Lignins and lignin-derived compounds are known to have antibacterial properties. The wound healing agents in the form of dressings produce faster skin repair and decrease pain in patients. In order to create an efficient antimicrobial agent in the form of dressing in the treatment of chronic wounds, a composite hydrogel of bacterial cellulose (BC) and dehydrogenative polymer of coniferyl alcohol (DHP), BC-DHP, was designed. Novel composite showed inhibitory or bactericidal effects against selected pathogenic bacteria, including clinically isolated ones. The highest release rate of DHP was in the first hour, while after 24 h there was still slow release of small amounts of DHP from BC-DHP during 72 h monitoring. High-performance liquid chromatography coupled with mass-spectrometry showed that BC-DHP releases DHP oligomers, which are proposed to be antimicrobially active DHP fractions. Scanning electron microscopy and atomic force microscopy micrographs proved a dose-dependent interaction of DHP with BC, which resulted in a decrease of the pore number and size in the cellulose membrane. The Fourier-transform infrared absorption spectra of the BC-DHP showed that DHP was partly bound to the BC matrix. The swelling and crystallinity degree were dose-dependent. All obtained results confirmed BC-DHP composite as a promising hydrogel for wounds healing.

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“…Hydrogel porosity and the attraction between the hydrogel and aqueous solution are key factors that determine its swelling capacity . Porosity and water attraction are related to the degree of physical and chemical cross‐linkages within the polymer, and a cross‐linker that is suitable for the synthesis of lignin‐based hydrogels is poly(ethylene glycol) diglycidyl ether (PEGDGE), a hydrophobic molecule with low toxicity.…”

Section: Introductionmentioning

confidence: 99%

Development and Characterization of Lignin‐Based Hydrogel for Use in Agricultural Soils: Preliminary Evidence

Mazloom

Khorassani

Zohuri

et al. 2019

CLEAN Soil Air Water

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In arid and semi‐arid regions of the world, agricultural production is greatly limited by water scarcity and inefficient water use. Water‐absorbent hydrogels are a technological solution that can retain soil water for plants. A lignin‐based hydrogel as a natural plant‐based water absorbent is prepared from lignin alkali polymers and poly(ethylene glycol) diglycidyl ether (PEGDGE) in adjusted alkali (NaOH) solution. The maximum swelling capacity of the hydrogel is achieved in 1.5 m NaOH with 0.5 mmol PEGDGE g lignin −1. Water swelling capacity is 34 g g Hydrogel −1 dry weight of hydrogel in distilled water, which is reduced to 53% and 64% in 0.1 m NaCl and 0.1 m CaCl2 solution, respectively. Biodegradability and phytotoxicity tests show that 6.5% of the sample mass decomposed after 40 days of incubation in soil solution media and the hydrogel is not phytotoxic to wheat seeds. These findings support the use of the lignin‐based hydrogel as an environmentally friendly additive to promote water retention in dry, saline soils. Due to the limitations of this study, further assessments are needed in order to understand the efficiency of lignin‐based hydrogel application in different soils with different biota.

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Progress in lignin hydrogels and nanocomposites for water purification: Future perspectives

Cited by 145 publications

References 103 publications

Sustainability of bioplastics: Opportunities and challenges

Sustainability of bioplastics: Opportunities and challenges

Bacterial cellulose-lignin composite hydrogel as a promising agent in chronic wound healing

Development and Characterization of Lignin‐Based Hydrogel for Use in Agricultural Soils: Preliminary Evidence

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