Toilet paper recovery from municipal wastewater and application in building sector

SBE19 - Resilient Built Environment for Sustainable Mediterranean Countries

生态环境科学;政治学社会学

Cipolletta, G.^1 ; Eusebi, A.L.^1 ; Palmieri, S.^1 ; Giosuè, C.^1 ; Tittarelli, F.^1^2 ; Frison, N.^3 ; Pastore, C.^4 ; Foglia, A.^1 ; Fatone, F.^1

Department of Materials, Environmental Sciences and Urban Planning-SIMAU, Polytechnic University of Marche-INSTM Research Unit, Ancona

60121, Italy^1

Institute of Atmospheric Sciences and Climate, National Research Council (ISAC-CNR), Bologna

40129, Italy^2

Department of Biotechnology, University of Verona, Verona

37129, Italy^3

Water Research Institute, National Research Council (IRSA-CNR), Bari

70132, Italy^4

关键词: Building sectors;    Cellulose fibres;    Cellulosic material;    Circular economy;    Hydraulic lime;    Municipal wastewaters;    Solids removal;    Sustainable construction;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/296/1/012024/pdf
DOI  :  10.1088/1755-1315/296/1/012024

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

One of the most innovative applications for a circular economy approach is the recovery of cellulose fibres from municipal wastewater. Recovered cellulose fibres from the wastewater could bring benefits to the construction industry in terms of reducing the amount of non-renewable raw materials and increasing sustainability. Rotating belt filter was used to obtain cellulose fibre-rich sludge from real urban influent. Recovered cellulosic material reached values up to 26.59 g m-3 when the solids removal efficiency was higher than 70%. Treated cellulosic sludge had an average of 87% content of cellulose, hemicellulose and lignin. The recovered cellulose fibres were analysed and used in mortar mix to understand their possible impact in the building sector and the effect on the properties of hydraulic lime-based mortars. Properties of fibre addition were investigated in terms of microstructure and mechanical strength. Cellulose fibres were added by mix volume up to 20%. The overall results with the maximum content of cellulose fibres indicated the improvement of mortars performance in terms of increased lightness, flexural strength and hygrometric properties.