Life cycle assessment and economic analysis of bioplastics production from cyanobacteria

被引：23

作者：

Rueda, Estel ^{[1
]}

Senatore, Vincenzo ^{[1
,2
]}

Zarra, Tiziano ^{[2
]}

Naddeo, Vincenzo ^{[2
]}

Garcia, Joan ^{[3
]}

Garfi, Marianna ^{[3
]}

机构：

[1] Univ Politecn Cataluna, BarcelonaTech UPC, GEMMA Grp Environm Engn & Microbiol, Escola Engn BarcelonaEst EEBE,Dept Civil & Enviro, Av Eduard Maristany 16,Bldg C5 1, E-08019 Barcelona, Spain

[2] Univ Salerno, Dept Civil Engn, Sanit Environm Engn Div SEED, Via Giovanni Paolo II 132, I-84084 Fisciano, SA, Italy

[3] Univ Politecn Cataluna, BarcelonaTech UPC, Dept Civil & Environm Engn, GEMMA Grp Environm Engn & Microbiol, C Jordi Girona 1-3,Bldg D1, E-08034 Barcelona, Spain

来源：

SUSTAINABLE MATERIALS AND TECHNOLOGIES | 2023年 / 35卷

关键词：

Polyhydroxybutyrate; Microalgae; Wastewater; Environmental impact; Economic assessment; WASTE-WATER TREATMENT; SCALE PRODUCTION; POLYHYDROXYALKANOATES; RECOVERY; PHB;

D O I：

10.1016/j.susmat.2023.e00579

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Cyanobacteria are interesting microorganisms to produce polyhydroxybutyrate (PHB), a biodegradable plastic similar to polypropylene. In this study, a Life Cycle Assessment and an economic analysis were carried out to assess the sustainability of the process. Different scenarios were analysed including different nutrient sources (i.e. wastewater and standard growth medium BG-11) and different PHB contents (from 15%dcw to 35%dcw and 50%dcw). Regarding the environmental impacts, increasing the PHB content drastically reduced (between 67 and 75%) the environmental impacts of the process. Environmental impacts were mainly caused by construction materials and the use of chemicals (especially chloroform for PHB purification). The economic analysis showed that the minimum selling price was 135 euro kgPHB-1 (PHB content: 50%dcw; productivity: 12.5 gPHB m- 3 d-1). A PHB productivity of 810 mg L-1 d-1 would be necessary to obtain a PHB selling price of 4 euro kgPHB-1 (i.e. PHB market price). To reach this productivity it would be necessary to improve the reactor design (lower Volume: Surface ratio) and modify the strains genetically.

引用

页数：11

共 46 条

[1] Production cost of a real microalgae production plant and strategies to reduce it [J].