P.D. Emrith-Jankee , H. Ramasawmy , D. Surroop , D.B. Das
{"title":"香蕉微纤维片的生物一锅法制备","authors":"P.D. Emrith-Jankee , H. Ramasawmy , D. Surroop , D.B. Das","doi":"10.1016/j.nxsust.2025.100178","DOIUrl":null,"url":null,"abstract":"<div><div>Lignocellulosic rectangular sheets (200 mm wide, 300 mm long and 1 mm thick), made from banana microfibres, were treated using an in-house resource-efficient one-pot system, which involves the one-of-a-kind dual and sequential processes of green bleaching and acid treatment. The purpose of this treatment was to make the lignocellulosic sheets suitable as water filtration membranes. To promote a cleaner production of the lignocellulosic sheets with no chemicals, both processes were conducted biologically using a common fungus, Aspergillus niger. This is another singularity of the study, as these processes are not known to have been run sequentially and from the same microorganism. The techno-economic analysis done showed that the proposed one-pot system is sustainable. Moreover, the results in this study confirmed that the biological process occurred, through the detection of the enzyme produced. A chemical composition analysis validated that amorphous constituents (lignin, pectin and hemicellulose) were removed to a high extent (40 – 50 %), thereby causing an enhanced cellulose content of 66 – 77 % (an increase of 30 %). Furthermore, the developed one-pot process allowed a reproducible decrease in pore size (58 %), giving the microfibre sheet a higher salt rejection capacity. Additionally, the banana microfibre sheets exhibited a high porosity of 98 % and a high water flux (460 – 1350 L/h m<sup>2</sup> bar), comparable to commercial membranes (around 1000 L/h m<sup>2</sup> bar). Furthermore, despite the expectation that the one-pot process would only maintain the mechanical strength, it caused an increase of 95 % in the wet tensile strength of the banana microfibre sheets while causing a maximum boost of 21 % in the dry tensile strength. Thus, the identified optimum conditions were acidic bleaching (pH: 3 – 5) and acid treatment of 8 days. In summary, following the one-pot process, the banana microfibre sheets were observed to be suitable for use as water filtration membranes due to their enhanced characteristics of the microfibre sheets. The one-pot system has resulted in an effective, cost-effective and eco-friendly process for successfully bleaching and acid-treating microfibre sheets.</div></div>","PeriodicalId":100960,"journal":{"name":"Next Sustainability","volume":"6 ","pages":"Article 100178"},"PeriodicalIF":0.0000,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Biologically-based one-pot process for the development of banana microfibre sheet\",\"authors\":\"P.D. Emrith-Jankee , H. Ramasawmy , D. Surroop , D.B. Das\",\"doi\":\"10.1016/j.nxsust.2025.100178\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Lignocellulosic rectangular sheets (200 mm wide, 300 mm long and 1 mm thick), made from banana microfibres, were treated using an in-house resource-efficient one-pot system, which involves the one-of-a-kind dual and sequential processes of green bleaching and acid treatment. The purpose of this treatment was to make the lignocellulosic sheets suitable as water filtration membranes. To promote a cleaner production of the lignocellulosic sheets with no chemicals, both processes were conducted biologically using a common fungus, Aspergillus niger. This is another singularity of the study, as these processes are not known to have been run sequentially and from the same microorganism. The techno-economic analysis done showed that the proposed one-pot system is sustainable. Moreover, the results in this study confirmed that the biological process occurred, through the detection of the enzyme produced. A chemical composition analysis validated that amorphous constituents (lignin, pectin and hemicellulose) were removed to a high extent (40 – 50 %), thereby causing an enhanced cellulose content of 66 – 77 % (an increase of 30 %). Furthermore, the developed one-pot process allowed a reproducible decrease in pore size (58 %), giving the microfibre sheet a higher salt rejection capacity. Additionally, the banana microfibre sheets exhibited a high porosity of 98 % and a high water flux (460 – 1350 L/h m<sup>2</sup> bar), comparable to commercial membranes (around 1000 L/h m<sup>2</sup> bar). Furthermore, despite the expectation that the one-pot process would only maintain the mechanical strength, it caused an increase of 95 % in the wet tensile strength of the banana microfibre sheets while causing a maximum boost of 21 % in the dry tensile strength. Thus, the identified optimum conditions were acidic bleaching (pH: 3 – 5) and acid treatment of 8 days. In summary, following the one-pot process, the banana microfibre sheets were observed to be suitable for use as water filtration membranes due to their enhanced characteristics of the microfibre sheets. The one-pot system has resulted in an effective, cost-effective and eco-friendly process for successfully bleaching and acid-treating microfibre sheets.</div></div>\",\"PeriodicalId\":100960,\"journal\":{\"name\":\"Next Sustainability\",\"volume\":\"6 \",\"pages\":\"Article 100178\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2025-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Next Sustainability\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2949823625000819\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Next Sustainability","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2949823625000819","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Biologically-based one-pot process for the development of banana microfibre sheet
Lignocellulosic rectangular sheets (200 mm wide, 300 mm long and 1 mm thick), made from banana microfibres, were treated using an in-house resource-efficient one-pot system, which involves the one-of-a-kind dual and sequential processes of green bleaching and acid treatment. The purpose of this treatment was to make the lignocellulosic sheets suitable as water filtration membranes. To promote a cleaner production of the lignocellulosic sheets with no chemicals, both processes were conducted biologically using a common fungus, Aspergillus niger. This is another singularity of the study, as these processes are not known to have been run sequentially and from the same microorganism. The techno-economic analysis done showed that the proposed one-pot system is sustainable. Moreover, the results in this study confirmed that the biological process occurred, through the detection of the enzyme produced. A chemical composition analysis validated that amorphous constituents (lignin, pectin and hemicellulose) were removed to a high extent (40 – 50 %), thereby causing an enhanced cellulose content of 66 – 77 % (an increase of 30 %). Furthermore, the developed one-pot process allowed a reproducible decrease in pore size (58 %), giving the microfibre sheet a higher salt rejection capacity. Additionally, the banana microfibre sheets exhibited a high porosity of 98 % and a high water flux (460 – 1350 L/h m2 bar), comparable to commercial membranes (around 1000 L/h m2 bar). Furthermore, despite the expectation that the one-pot process would only maintain the mechanical strength, it caused an increase of 95 % in the wet tensile strength of the banana microfibre sheets while causing a maximum boost of 21 % in the dry tensile strength. Thus, the identified optimum conditions were acidic bleaching (pH: 3 – 5) and acid treatment of 8 days. In summary, following the one-pot process, the banana microfibre sheets were observed to be suitable for use as water filtration membranes due to their enhanced characteristics of the microfibre sheets. The one-pot system has resulted in an effective, cost-effective and eco-friendly process for successfully bleaching and acid-treating microfibre sheets.