{"title":"单步硝酸钠-氯化钙交联聚乙烯醇-海藻酸盐膜生物反应器群体猝灭膜片的制备与表征","authors":"Ermias Mideksa, Johanne Teychene, Sarah Soueid, Raphael Laloo, Isabelle Fourquaux, Mickaël Castelain, Valérie Sartor, Audrey Tourrette, Christelle Guigui","doi":"10.1007/s10924-025-03645-x","DOIUrl":null,"url":null,"abstract":"<div><p>Quorum Quenching (QQ) is a proven anti-biofouling strategy in Membrane Bioreactors (MBRs). This study presents a novel approach for preparing and characterizing Poly (vinyl alcohol) (PVA) and Alginate (ALG) sheets for biofouling mitigation in MBRs. A significant challenge is posed in achieving QQ sheet preparation without using boric acid (H<sub>3</sub>BO<sub>3</sub>), a toxic crosslinker, and in a single-step crosslinking process. In this context, novel PVA-ALG sheets were prepared using sodium nitrate (NaNO<sub>3</sub>) and calcium chloride (CaCl<sub>2</sub>) in a single crosslinking step. Another new type of porous sheets was also prepared using a primary crosslinking solution composed of H<sub>3</sub>BO<sub>3</sub>, NaNO<sub>3</sub>, and CaCl<sub>2</sub>. The structural, mechanical, and textural properties of newly prepared sheets were compared to those of sheets crosslinked using the conventional primary crosslinking solution containing H<sub>3</sub>BO<sub>3</sub> and CaCl<sub>2</sub>. Additionally, degradation of the QS signal molecule C8-HSL was investigated using all types of sheets entrapped with the QQ bacteria <i>Rhodococcus</i> sp. BH4. Differences in the composition of the crosslinking solutions among the various sheet types led to variations in their structural properties, characterized by increased crosslinking density and macro-void formation. Mesopores dominate in all PVA-ALG sheets, while their specific surface areas range from 45 m<sup>2</sup>/g to 77 m<sup>2</sup>/g, and tensile strength between 0.1 MPa and 0.3 MPa. New sheets crosslinked with NaNO<sub>3</sub> and CaCl<sub>2</sub> display the highest tensile strength and specific surface area. Furthermore, QQ sheets crosslinked with NaNO<sub>3</sub> and CaCl<sub>2</sub> demonstrated a superior C8-HSL degradation capacity compared to those prepared using the conventional crosslinking method involving boric acid.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":"33 9","pages":"4193 - 4211"},"PeriodicalIF":5.0000,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Preparation and Characterization of Single-Step Sodium Nitrate-Calcium Chloride Crosslinked Polyvinyl Alcohol-Alginate Sheets for Quorum Quenching Application in Membrane Bioreactors\",\"authors\":\"Ermias Mideksa, Johanne Teychene, Sarah Soueid, Raphael Laloo, Isabelle Fourquaux, Mickaël Castelain, Valérie Sartor, Audrey Tourrette, Christelle Guigui\",\"doi\":\"10.1007/s10924-025-03645-x\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Quorum Quenching (QQ) is a proven anti-biofouling strategy in Membrane Bioreactors (MBRs). This study presents a novel approach for preparing and characterizing Poly (vinyl alcohol) (PVA) and Alginate (ALG) sheets for biofouling mitigation in MBRs. A significant challenge is posed in achieving QQ sheet preparation without using boric acid (H<sub>3</sub>BO<sub>3</sub>), a toxic crosslinker, and in a single-step crosslinking process. In this context, novel PVA-ALG sheets were prepared using sodium nitrate (NaNO<sub>3</sub>) and calcium chloride (CaCl<sub>2</sub>) in a single crosslinking step. Another new type of porous sheets was also prepared using a primary crosslinking solution composed of H<sub>3</sub>BO<sub>3</sub>, NaNO<sub>3</sub>, and CaCl<sub>2</sub>. The structural, mechanical, and textural properties of newly prepared sheets were compared to those of sheets crosslinked using the conventional primary crosslinking solution containing H<sub>3</sub>BO<sub>3</sub> and CaCl<sub>2</sub>. Additionally, degradation of the QS signal molecule C8-HSL was investigated using all types of sheets entrapped with the QQ bacteria <i>Rhodococcus</i> sp. BH4. Differences in the composition of the crosslinking solutions among the various sheet types led to variations in their structural properties, characterized by increased crosslinking density and macro-void formation. Mesopores dominate in all PVA-ALG sheets, while their specific surface areas range from 45 m<sup>2</sup>/g to 77 m<sup>2</sup>/g, and tensile strength between 0.1 MPa and 0.3 MPa. New sheets crosslinked with NaNO<sub>3</sub> and CaCl<sub>2</sub> display the highest tensile strength and specific surface area. Furthermore, QQ sheets crosslinked with NaNO<sub>3</sub> and CaCl<sub>2</sub> demonstrated a superior C8-HSL degradation capacity compared to those prepared using the conventional crosslinking method involving boric acid.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>\",\"PeriodicalId\":659,\"journal\":{\"name\":\"Journal of Polymers and the Environment\",\"volume\":\"33 9\",\"pages\":\"4193 - 4211\"},\"PeriodicalIF\":5.0000,\"publicationDate\":\"2025-07-18\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Polymers and the Environment\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s10924-025-03645-x\",\"RegionNum\":3,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENGINEERING, ENVIRONMENTAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Polymers and the Environment","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s10924-025-03645-x","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, ENVIRONMENTAL","Score":null,"Total":0}
Preparation and Characterization of Single-Step Sodium Nitrate-Calcium Chloride Crosslinked Polyvinyl Alcohol-Alginate Sheets for Quorum Quenching Application in Membrane Bioreactors
Quorum Quenching (QQ) is a proven anti-biofouling strategy in Membrane Bioreactors (MBRs). This study presents a novel approach for preparing and characterizing Poly (vinyl alcohol) (PVA) and Alginate (ALG) sheets for biofouling mitigation in MBRs. A significant challenge is posed in achieving QQ sheet preparation without using boric acid (H3BO3), a toxic crosslinker, and in a single-step crosslinking process. In this context, novel PVA-ALG sheets were prepared using sodium nitrate (NaNO3) and calcium chloride (CaCl2) in a single crosslinking step. Another new type of porous sheets was also prepared using a primary crosslinking solution composed of H3BO3, NaNO3, and CaCl2. The structural, mechanical, and textural properties of newly prepared sheets were compared to those of sheets crosslinked using the conventional primary crosslinking solution containing H3BO3 and CaCl2. Additionally, degradation of the QS signal molecule C8-HSL was investigated using all types of sheets entrapped with the QQ bacteria Rhodococcus sp. BH4. Differences in the composition of the crosslinking solutions among the various sheet types led to variations in their structural properties, characterized by increased crosslinking density and macro-void formation. Mesopores dominate in all PVA-ALG sheets, while their specific surface areas range from 45 m2/g to 77 m2/g, and tensile strength between 0.1 MPa and 0.3 MPa. New sheets crosslinked with NaNO3 and CaCl2 display the highest tensile strength and specific surface area. Furthermore, QQ sheets crosslinked with NaNO3 and CaCl2 demonstrated a superior C8-HSL degradation capacity compared to those prepared using the conventional crosslinking method involving boric acid.
期刊介绍：
The Journal of Polymers and the Environment fills the need for an international forum in this diverse and rapidly expanding field. The journal serves a crucial role for the publication of information from a wide range of disciplines and is a central outlet for the publication of high-quality peer-reviewed original papers, review articles and short communications. The journal is intentionally interdisciplinary in regard to contributions and covers the following subjects - polymers, environmentally degradable polymers, and degradation pathways: biological, photochemical, oxidative and hydrolytic; new environmental materials: derived by chemical and biosynthetic routes; environmental blends and composites; developments in processing and reactive processing of environmental polymers; characterization of environmental materials: mechanical, physical, thermal, rheological, morphological, and others; recyclable polymers and plastics recycling environmental testing: in-laboratory simulations, outdoor exposures, and standardization of methodologies; environmental fate: end products and intermediates of biodegradation; microbiology and enzymology of polymer biodegradation; solid-waste management and public legislation specific to environmental polymers; and other related topics.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
