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Kumar V, Chandel A, Upadhyay P, Chakma S. Enhanced Total Contactless Photothermal Desalination by Translucent Thin Film Coating of Crystalline Nanocellulose. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:12343-12352. [PMID: 38853572 DOI: 10.1021/acs.langmuir.3c03609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2024]
Abstract
The innovative approach of harnessing abundant solar energy to facilitate water purification holds great potential for addressing a diverse range of water-related challenges. Utilizing the same method of photothermal desalination is highly promising, sustainable, and cost effective. However, in photothermal desalination, generally, steam is generated at the liquid-air interface. Despite its immense potential, this results in a lower evaporation rate and is prone to salt fouling. Therefore, to address two main challenges, (1) fouling and (2) maximum interfacial temperature (100 °C), here, we report total contactless photothermal desalination by a translucent thin film coating of Crystalline Nanocellulose (CNC). In contactless photothermal desalination, the active photothermal layer remains in no physical contact with the saline water; thus, automatic antifouling and a temperature above the boiling point of water can be achieved for water purification. In this report, we have sustainably extracted CNC from waste sawdust by a sonochemical extraction method using minimal chemicals. Additionally, the sonoextraction method through cavitation helps in the desulfation of CNC. These thermally stable and highly crystalline CNCs are used in making active translucent photothermal active layers for photothermal desalination. CNCs were well characterized by both microscopic and spectroscopic techniques. In the photothermal desalination, the results show an augmented evaporation rate of ∼3.30 kg/m2·h and virtually infinite recyclability for longer usability. Moreover, the integrated setup reported here comprises an independent module with a highly flexible design that mimics the greenhouse effect for a high solar-to-steam output.
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Affiliation(s)
- Vishrant Kumar
- Department of Chemical Engineering, Indian Institute of Science Education and Research Bhopal, Bhopal, Madhya Pradesh 462 066, India
| | - Abhinav Chandel
- Department of Physics, Indian Institute of Science Education and Research Bhopal, Bhopal, Madhya Pradesh 462 066, India
| | - Prachi Upadhyay
- Department of Chemical Engineering, Indian Institute of Science Education and Research Bhopal, Bhopal, Madhya Pradesh 462 066, India
| | - Sankar Chakma
- Department of Chemical Engineering, Indian Institute of Science Education and Research Bhopal, Bhopal, Madhya Pradesh 462 066, India
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Liu Y, Ma M, Shen Y, Zhao Z, Wang X, Wang J, Pan J, Wang D, Wang C, Li J. Polyhedral Oligomeric Sesquioxane Cross-Linked Chitosan-Based Multi-Effective Aerogel Preparation and Its Water-Driven Recovery Mechanism. Gels 2024; 10:279. [PMID: 38667698 PMCID: PMC11049377 DOI: 10.3390/gels10040279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2024] [Revised: 04/17/2024] [Accepted: 04/18/2024] [Indexed: 04/28/2024] Open
Abstract
The use of environmentally friendly and non-toxic biomass-based interfacial solar water evaporators has been widely reported as a method for water purification in recent years. However, the poor stability of the water transport layer made from biomass materials and its susceptibility to deformation when exposed to harsh environments limit its practical application. To address this issue, water-driven recovery aerogel (PCS) was prepared by cross-linking epoxy-based polyhedral oligomeric silsesquioxane (EP-POSS) epoxy groups with chitosan (CS) amino groups. The results demonstrate that PCS exhibits excellent water-driven recovery performance, regaining its original volume within a very short time (1.9 s) after strong compression (ε > 80%). Moreover, PCS has a water absorption rate of 2.67 mm s-1 and exhibits an excellent water absorption capacity of 22.09 g g-1 even after ten cycles of absorption-removal. Furthermore, a photothermal evaporator (PCH) was prepared by loading the top layer with hydrothermally reacted tannins (HAs) and Zn2+ complexes. The results indicate that PCH achieves an impressive evaporation rate of 1.89 kg m-2 h-1 under one sun illumination. Additionally, due to the antimicrobial properties of Zn2+, PCH shows inhibitory effects against Staphylococcus aureus and Escherichia coli, thereby extending the application of solar water evaporators to include antimicrobial purification in natural waters.
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Affiliation(s)
- Yang Liu
- Key Laboratory of Bio-Based Material Science and Technology, Ministry of Education, Northeast Forestry University, Harbin 150040, China; (Y.L.); (M.M.); (Y.S.); (Z.Z.); (X.W.); (J.W.); (J.P.); (C.W.); (J.L.)
- College of Material Science and Engineering, Northeast Forestry University, Harbin 150040, China
| | - Mingjian Ma
- Key Laboratory of Bio-Based Material Science and Technology, Ministry of Education, Northeast Forestry University, Harbin 150040, China; (Y.L.); (M.M.); (Y.S.); (Z.Z.); (X.W.); (J.W.); (J.P.); (C.W.); (J.L.)
- College of Material Science and Engineering, Northeast Forestry University, Harbin 150040, China
| | - Yuan Shen
- Key Laboratory of Bio-Based Material Science and Technology, Ministry of Education, Northeast Forestry University, Harbin 150040, China; (Y.L.); (M.M.); (Y.S.); (Z.Z.); (X.W.); (J.W.); (J.P.); (C.W.); (J.L.)
- College of Material Science and Engineering, Northeast Forestry University, Harbin 150040, China
| | - Zhengdong Zhao
- Key Laboratory of Bio-Based Material Science and Technology, Ministry of Education, Northeast Forestry University, Harbin 150040, China; (Y.L.); (M.M.); (Y.S.); (Z.Z.); (X.W.); (J.W.); (J.P.); (C.W.); (J.L.)
- College of Material Science and Engineering, Northeast Forestry University, Harbin 150040, China
| | - Xuefei Wang
- Key Laboratory of Bio-Based Material Science and Technology, Ministry of Education, Northeast Forestry University, Harbin 150040, China; (Y.L.); (M.M.); (Y.S.); (Z.Z.); (X.W.); (J.W.); (J.P.); (C.W.); (J.L.)
- College of Material Science and Engineering, Northeast Forestry University, Harbin 150040, China
| | - Jiaqi Wang
- Key Laboratory of Bio-Based Material Science and Technology, Ministry of Education, Northeast Forestry University, Harbin 150040, China; (Y.L.); (M.M.); (Y.S.); (Z.Z.); (X.W.); (J.W.); (J.P.); (C.W.); (J.L.)
- College of Material Science and Engineering, Northeast Forestry University, Harbin 150040, China
| | - Jiangbo Pan
- Key Laboratory of Bio-Based Material Science and Technology, Ministry of Education, Northeast Forestry University, Harbin 150040, China; (Y.L.); (M.M.); (Y.S.); (Z.Z.); (X.W.); (J.W.); (J.P.); (C.W.); (J.L.)
- College of Material Science and Engineering, Northeast Forestry University, Harbin 150040, China
| | - Di Wang
- Key Laboratory of Bio-Based Material Science and Technology, Ministry of Education, Northeast Forestry University, Harbin 150040, China; (Y.L.); (M.M.); (Y.S.); (Z.Z.); (X.W.); (J.W.); (J.P.); (C.W.); (J.L.)
- College of Material Science and Engineering, Northeast Forestry University, Harbin 150040, China
| | - Chengyu Wang
- Key Laboratory of Bio-Based Material Science and Technology, Ministry of Education, Northeast Forestry University, Harbin 150040, China; (Y.L.); (M.M.); (Y.S.); (Z.Z.); (X.W.); (J.W.); (J.P.); (C.W.); (J.L.)
- College of Material Science and Engineering, Northeast Forestry University, Harbin 150040, China
| | - Jian Li
- Key Laboratory of Bio-Based Material Science and Technology, Ministry of Education, Northeast Forestry University, Harbin 150040, China; (Y.L.); (M.M.); (Y.S.); (Z.Z.); (X.W.); (J.W.); (J.P.); (C.W.); (J.L.)
- College of Material Science and Engineering, Northeast Forestry University, Harbin 150040, China
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Ranjan R, Bhatt SB, Rai R, Sharma SK, Verma M, Dhar P. Valorization of sugarcane bagasse with in situ grown MoS 2 for continuous pollutant remediation and microbial decontamination. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:17494-17510. [PMID: 38342834 DOI: 10.1007/s11356-024-32332-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Accepted: 01/31/2024] [Indexed: 02/13/2024]
Abstract
In this study, sugarcane bagasse (SB) was strategically subjected to a delignification process followed by the in situ growth of multi-layered molybdenum disulfide (MoS2) nanosheets with hexagonal phase (2H-phase) crystal structure via hydrothermal treatment. The MoS2 nanosheets underwent self-assembly to form nanoflower-like structures in the aligned cellulose inter-channels of delignified sugarcane bagasse (DSB), the mechanism of which was understood through FTIR and XPS spectroscopic studies. DSB, due to its porous morphology and abundant hydroxyl groups, shows remediation capabilities of methylene blue (MB) dye through physio-sorption but shows a low adsorption capacity of 80.21 mg/g. To improve the removal capacity, DSB after in situ growth of MoS2 (DSB-MoS2) shows enhanced dye degradation to 114.3 mg/g (in the dark) which further improved to 158.74 mg/g during photodegradation, due to catalytically active MoS2. Interestingly, DSB-MoS2 was capable of continuous dye degradation with recyclability for three cycles, reaching an efficiency of > 83%, along with a strong antibacterial response against Gram-positive Staphylococcus aureus (S.aureus) and Gram-negative Escherichia coli (E. coli). The present study introduces a unique strategy for the up-conversion of agricultural biomass into value-added bio-adsorbents, which can effectively and economically address the remediation of dyes with simultaneous microbial decontamination from polluted wastewater streams.
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Affiliation(s)
- Rahul Ranjan
- School of Biochemical Engineering, Indian Institute of Technology (BHU), Varanasi, Uttar Pradesh, 221005, India
| | - Smruti B Bhatt
- School of Biochemical Engineering, Indian Institute of Technology (BHU), Varanasi, Uttar Pradesh, 221005, India
| | - Rohit Rai
- School of Biochemical Engineering, Indian Institute of Technology (BHU), Varanasi, Uttar Pradesh, 221005, India
| | - Sanju Kumari Sharma
- School of Biochemical Engineering, Indian Institute of Technology (BHU), Varanasi, Uttar Pradesh, 221005, India
| | - Muskan Verma
- Department of Biosciences, Integral University, Lucknow, Uttar Pradesh, 226026, India
| | - Prodyut Dhar
- School of Biochemical Engineering, Indian Institute of Technology (BHU), Varanasi, Uttar Pradesh, 221005, India.
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Chaw Pattnayak B, Krishna VS, Sahu BK, Mohapatra S. Reusable Floating Spherical Hydrogel Evaporator for Solar Desalination with Salt Mitigation and Contaminant Elimination. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:18663-18671. [PMID: 38063076 DOI: 10.1021/acs.langmuir.3c03174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2023]
Abstract
The generation of clean and drinkable fresh water from seawater and contaminated water holds great potential to mitigate water scarcity. Herein, a floating spherical hydrogel evaporator (SHE) is designed to achieve sunlight-driven desalination, self-salt cleaning, and removal of environmental contaminants. The spherical lightweight polystyrene is coated with a porous carbon-embedded sodium alginate/PVA/CMC photothermal hydrogel to generate a spherical hydrogel evaporator (SHE) that floats naturally. The SHE is very sensitive to the weight imbalance (500 mg) and can respond quickly to the accumulation of salt by rotation to the fresh evaporation surface, realizing excellent antisalt fouling performance. Remarkably, with energy localization by porous carbon, the spherical floating evaporator achieved a high evaporation rate of 2.65 kg m-2 h-1 with an evaporation efficiency of 98%. At the same time, SHE is also capable of adsorbing both organic contaminants and heavy metal ions through functional groups of the hydrogel, attaining 99% removal efficiency. Overall, this low-cost spherical floating evaporator may offer solution for eco-friendly and sustainable production of fresh water on a large scale.
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Affiliation(s)
- Bibek Chaw Pattnayak
- Department of Chemistry, National Institute of Technology, Rourkela, Odisha 769008, India
| | - V Saimohana Krishna
- Department of Chemistry, National Institute of Technology, Rourkela, Odisha 769008, India
| | - Bikash K Sahu
- Department of Chemistry, National Institute of Technology, Rourkela, Odisha 769008, India
| | - Sasmita Mohapatra
- Department of Chemistry, National Institute of Technology, Rourkela, Odisha 769008, India
- Centre for Nanomaterials, National Institute of Technology, Rourkela, Odisha 769008, India
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