Circular Economy in the Manufacture of Bioplastics: From Sewage Sludge to Plastic Bottle

Proceedings

Sierra, A. L. Marqués¹  García, N. Anes²  Álvarez, F. Blanco³ 

[1] Author to whom correspondence should be addressed.;ELMAC-Ingenieria, Dirección, 33203 Gijón, Spain;School of Mining, Energy and Materials Engineering, University of Oviedo, Independencia, 13, 33003 Oviedo, Spain

关键词: bioplastics;    PHA;    sludge;    VFA;    water treatment plant;   

DOI  :  10.3390/proceedings2231425

学科分类：社会科学、人文和艺术（综合）

来源: mdpi

【 摘 要 】

The main objective of this study is the potential evaluation of obtaining bioplastics through biodegradable polyesters synthesized by bacteria, present in the anaerobic treatment of urban and industrial wastewater, which have a series of characteristics to consider as their processing as material bioplastic In Asturias, more than 70,000 tons of sludge are produced and, by applying circular economy criteria and technologies for the production of bioplastics from wastewater, a synergy could be obtained that would allow the reuse of sludge by valorization as raw material. to produce bioplastics. This valorization can be carried out mainly through the combination of two technologies, on the one hand, anaerobic fermentation to produce volatile fatty acids and on the other the generation of bacterial populations that produce Polyhydroxyalkanoates (PHA’s). The PHAs are obtained from the microorganisms present in the sludge generated in the wastewater treatment process.

【 授权许可】

CC BY