首页|Extracellular polymeric substances as paper coating biomaterials derived from anaerobic granular sludge

Extracellular polymeric substances as paper coating biomaterials derived from anaerobic granular sludge

扫码查看
原文链接
  • 万方数据
Recovering extracellular polymeric substances(EPS)from waste granular sludge offers a cost-effective and sustainable approach for transforming wastewater resources into industrially valuable products.Yet,the application potential of these EPS in real-world scenarios,particularly in paper manufacturing,remains underexplored.Here we show the feasibility of EPS-based biomaterials,derived from anaerobic granular sludges,as novel coating agents in paper production.We systematically characterised the rheological properties of various EPS-based suspensions.When applied as surface sizing agents,these EPS-based biomaterials formed a distinct,ultra-thin layer on paper,as evidenced by scanning electron microscopy.A comprehensive evaluation of water and oil penetration,along with barrier properties,revealed that EPS-enhanced coatings markedly diminished water absorption while significantly bolstering oil and grease resistance.Optimal performance was observed in EPS variants with elevated protein and hydrophobic contents,correlating with their superior rheological characteristics.The enhanced water-barrier and grease resistance of EPS-coated paper can be attributed to its non-porous,fine surface structure and the functional groups in EPS,particularly the high protein content and hy-drophobic humic-like substances.This research marks the first demonstration of utilizing EPS from anaerobic granular sludge as paper-coating biomaterials,bridging a critical knowledge gap in the sus-tainable use of biopolymers in industrial applications.

Anaerobic granular sludgeExtracellular polymeric substances(EPS)Resource recoveryPaper coating

Cuijie Feng、Lorenzo Bonetti、Hui Lu、Zhongbo Zhou、Tommaso Lotti、Mingsheng Jia、Giacomo Rizzardi、Luigi De Nardo、Francesca Malpei

展开 >

Department of Civil and Environmental Engineering,Politecnico di Milano,Piazza Leonardo da Vinci,32,20133,Milan,Italy

School of Civil Engineering,Sun Yat-sen University,519082,Zhuhai,China

Department of Chemistry,Materials and Chemical Engineering"G.Natta",Politecnico di Milano,Via Mancinelli,7,20131,Milan,Italy

School of Environmental Science and Engineering,Sun Yat-sen University,510275,Guangzhou,China

Southwest University,College of Resources and Environment,Tiansheng Road 2,Beibei District,400716,Chongqing,China

Civil and Environmental Engineering Department,University of Florence,Via di Santa Marta 3,50139,Florence,Italy

Center for Microbial Ecological and Technology(CMET),Ghent University,Coupure Links 653,Gent,Belgium

展开 >

2024

10.1016/j.ese.2024.100397

环境科学与生态技术(英文)

环境科学与生态技术(英文)

ISSN：
年,卷(期)：2024.21(5)