A simple method to valorize silica sludges into sustainable coatings for indoor humidity buffering
Abstract In this study, the production of indoor humidity-buffering coatings (IHC-s) from recycling waste silica sludges by using a room-temperature sol-gel method which is a simple and energy-efficient route is reported. The properties of these IHC-s are identified by scanning electron microscope,...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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BMC
2022-01-01
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| Series: | Sustainable Environment Research |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s42834-022-00120-3 |
| _version_ | 1819260987144929280 |
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| author | Chi-Hong Kuok Wahid Dianbudiyanto Shou-Heng Liu |
| author_facet | Chi-Hong Kuok Wahid Dianbudiyanto Shou-Heng Liu |
| author_sort | Chi-Hong Kuok |
| collection | DOAJ |
| description | Abstract In this study, the production of indoor humidity-buffering coatings (IHC-s) from recycling waste silica sludges by using a room-temperature sol-gel method which is a simple and energy-efficient route is reported. The properties of these IHC-s are identified by scanning electron microscope, X-ray diffraction, X-ray fluorescence spectrometer, laser particle size analyzer, N2 adsorption-desorption isotherms and toxicity characteristic leaching procedure (TCLP). The moisture adsorption-desorption tests show that the IHC-s have moisture buffering values of ca. 270–316 g m− 2 and moisture contents of 23.6–26.7% in the range of 50–90% relative humidity (RH). Furthermore, the humidity buffering capacities, moisture adsorption-desorption rate and stability are significantly superior to commercially available coatings in the range of 50–75% RH. The enhancement may be due to the formation of porous structure in the coatings via the dispersed waste silica sludges and gypsum which transformed from bassanite by self-assembly process. Most importantly, the prepared IHC-s show surpassing antimicrobial efficacy (> 99.99%) and no detectable leaching heavy metals based on TCLP tests, which provides an economic and environmental-friendly route for recovering and valorizing industrial wastes. |
| first_indexed | 2024-12-23T19:34:38Z |
| format | Article |
| id | doaj.art-8201ba796c15463ea4a679d9a206a442 |
| institution | Directory Open Access Journal |
| issn | 2468-2039 |
| language | English |
| last_indexed | 2024-12-23T19:34:38Z |
| publishDate | 2022-01-01 |
| publisher | BMC |
| record_format | Article |
| series | Sustainable Environment Research |
| spelling | doaj.art-8201ba796c15463ea4a679d9a206a4422022-12-21T17:33:50ZengBMCSustainable Environment Research2468-20392022-01-013211910.1186/s42834-022-00120-3A simple method to valorize silica sludges into sustainable coatings for indoor humidity bufferingChi-Hong Kuok0Wahid Dianbudiyanto1Shou-Heng Liu2Department of Environmental Engineering, National Cheng Kung UniversityDepartment of Biology, Universitas AirlanggaDepartment of Environmental Engineering, National Cheng Kung UniversityAbstract In this study, the production of indoor humidity-buffering coatings (IHC-s) from recycling waste silica sludges by using a room-temperature sol-gel method which is a simple and energy-efficient route is reported. The properties of these IHC-s are identified by scanning electron microscope, X-ray diffraction, X-ray fluorescence spectrometer, laser particle size analyzer, N2 adsorption-desorption isotherms and toxicity characteristic leaching procedure (TCLP). The moisture adsorption-desorption tests show that the IHC-s have moisture buffering values of ca. 270–316 g m− 2 and moisture contents of 23.6–26.7% in the range of 50–90% relative humidity (RH). Furthermore, the humidity buffering capacities, moisture adsorption-desorption rate and stability are significantly superior to commercially available coatings in the range of 50–75% RH. The enhancement may be due to the formation of porous structure in the coatings via the dispersed waste silica sludges and gypsum which transformed from bassanite by self-assembly process. Most importantly, the prepared IHC-s show surpassing antimicrobial efficacy (> 99.99%) and no detectable leaching heavy metals based on TCLP tests, which provides an economic and environmental-friendly route for recovering and valorizing industrial wastes.https://doi.org/10.1186/s42834-022-00120-3ValorizationMesoporous/microporous structureIndoor humidity controlIndustrial sludgesSol-gel |
| spellingShingle | Chi-Hong Kuok Wahid Dianbudiyanto Shou-Heng Liu A simple method to valorize silica sludges into sustainable coatings for indoor humidity buffering Sustainable Environment Research Valorization Mesoporous/microporous structure Indoor humidity control Industrial sludges Sol-gel |
| title | A simple method to valorize silica sludges into sustainable coatings for indoor humidity buffering |
| title_full | A simple method to valorize silica sludges into sustainable coatings for indoor humidity buffering |
| title_fullStr | A simple method to valorize silica sludges into sustainable coatings for indoor humidity buffering |
| title_full_unstemmed | A simple method to valorize silica sludges into sustainable coatings for indoor humidity buffering |
| title_short | A simple method to valorize silica sludges into sustainable coatings for indoor humidity buffering |
| title_sort | simple method to valorize silica sludges into sustainable coatings for indoor humidity buffering |
| topic | Valorization Mesoporous/microporous structure Indoor humidity control Industrial sludges Sol-gel |
| url | https://doi.org/10.1186/s42834-022-00120-3 |
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