Abstract
Two lignin-based composite films were prepared by solution casting, which were named Cu-CLA/PVA and CuO-LA/PVA/CNF, respectively. The kinetic and thermodynamic analyses of the deodorization process of the composite membranes were performed by using adsorption models. The results showed that both membranes had good adsorption performance for H2S with the adsorption amounts of 36.39 mg g−1 and 35.69 mg g−1, respectively. The adsorption processes were mainly following the pseudo-secondary kinetic model, intraparticle diffusion model, and Freundlich isothermal adsorption model, indicating that the intraparticle diffusion resistance controlled the H2S adsorption rate and H2S was adsorbed on the non-homogeneous surface of the membranes through multiple layers. The adsorption of H2S by Cu-CLA/PVA is an exothermic process, while the adsorption of H2S by CuO-LA/PVA/CNF is a heat-absorbing process, indicating that Cu-CLA/PVA is more suitable for H2S adsorption at low temperatures, but CuO-LA/PVA/CNF, at higher temperatures, is favorable for H2S adsorption reactions. △G is negative of both Cu-CLA/PVA and CuO-LA/PVA/CNF, indicating that both Cu-CLA/PVA and CuO-LA/PVA/CNF are spontaneous for H2S adsorption.
Acknowledgments
The authors are very grateful to the editor and anonymous reviewers for their valuable comments and helpful suggestions.
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Author contributions: Qiushuang Li sorted out the article data and organized papers. Fen Li proposed research topics and conducted final review of the paper. Ying Yang revised the paper. Hong Yan revised the paper. Youjing Li implemented the research process. Menglong Zheng and Huiyu Chen conducted review of the paper. All authors read and approved the final manuscript.
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Research funding: This work was supported by the National Natural Science Foundation of China Fund under Grant 22278100, the Guangdong Province Engineering Laboratory for Air Pollution Control Open-end Fund under Grant 20193236-09-05.
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Ethics approval and consent to participate: Not applicable.
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Conflict of interest statement: The authors declare no conflicts of interest regarding this article.
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Data availability: The datasets used and/or analyzed during the cur-rent study are available from the corresponding authors on reasonable request.
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Articles in the same Issue
- Frontmatter
- Material Properties
- A brief review on polymer nanocomposites: current trends and prospects
- Recent development in the formation and surface modification of cellulose-bead nanocomposites as adsorbents for water purification: a comprehensive review
- CdSe nanodots to nanorods in PVA films: effect of shape transition and loading on the opto-mechanical and biodegradation properties
- Kinetic and thermodynamic studies of H2S adsorption by lignin-based composite membranes
- Preparation and Assembly
- Fabrication of avian eggshell membrane derived dispersed collagen hydrogels for potential bone regeneration
- Antimicrobially effective protein-loaded metal chelated chitosan composite
- Engineering and Processing
- Highly thermally conductive polyamide 6 composites with favorable mechanical properties, processability and low water absorption using a hybrid filling of short carbon fiber, flake graphite and expanded graphite
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Articles in the same Issue
- Frontmatter
- Material Properties
- A brief review on polymer nanocomposites: current trends and prospects
- Recent development in the formation and surface modification of cellulose-bead nanocomposites as adsorbents for water purification: a comprehensive review
- CdSe nanodots to nanorods in PVA films: effect of shape transition and loading on the opto-mechanical and biodegradation properties
- Kinetic and thermodynamic studies of H2S adsorption by lignin-based composite membranes
- Preparation and Assembly
- Fabrication of avian eggshell membrane derived dispersed collagen hydrogels for potential bone regeneration
- Antimicrobially effective protein-loaded metal chelated chitosan composite
- Engineering and Processing
- Highly thermally conductive polyamide 6 composites with favorable mechanical properties, processability and low water absorption using a hybrid filling of short carbon fiber, flake graphite and expanded graphite
- Tribological behavior of ultra-high molecular weight polyethylene (UHMWPE) for acetabular replacement under frictional heat based on molecular dynamics