Biogas generation potential of starch-and polylactide- based biodegradable plastics

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27710%2F23%3A10252289" target="_blank" >RIV/61989100:27710/23:10252289 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.scopus.com/record/display.uri?eid=2-s2.0-85151294533&origin=resultslist&sort=plf-f&src=s&st1=biogas+generation+potential+of+starch&sid=e1ba7920145084b5c024d0c902cc8673&sot=b&sdt=b&sl=44&s=TITLE%28biogas+generation+potential+of+starch%29&relpos=0&citeCnt=0&searchTerm=" target="_blank" >https://www.scopus.com/record/display.uri?eid=2-s2.0-85151294533&origin=resultslist&sort=plf-f&src=s&st1=biogas+generation+potential+of+starch&sid=e1ba7920145084b5c024d0c902cc8673&sot=b&sdt=b&sl=44&s=TITLE%28biogas+generation+potential+of+starch%29&relpos=0&citeCnt=0&searchTerm=</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Biogas generation potential of starch-and polylactide- based biodegradable plastics

Popis výsledku v původním jazyce

Plastic materials decompose with an extremely slow rate and many decades are required for their complete degradation. Lately, commercial plastics have been partially replaced by biodegradable additives. Polylactic acid (PLA) and starch-based biopolymers are indicative alternatives employed to replace a 50-100 % of the mass of conventional plastic materials. In this work, a conventional and two different biodegradable commercial bags were subjected to single-stage mesophilic anaerobic digestion for 100 days to investigate their degradation performance and examine their biogas and methane production potential. LDPE-based plastic (LDPE-50) decomposed only negligibly producing 0.0785 m3 kgVS-1 of methane after 100 days of digestion whereas PLA-based bioplastic (PLAS-31) showed a better degradation performance (0.1782 m3 kgVS-1). A methane production of 0.1941 m3 kgVS-1 was attained from a second type of PLA-based biodegradable bag (PLAS-13) indicating that bioplastics under specific anaerobic digestion conditions could provide a significant amount of biogas. The degradable organic material in bioplastics was the principal factor defining their conversion to biogas and methane. Anaerobic digestion had a minimal impact on the surface of LDPE-50, while the most significant modification of surface was seen for PLAS-13 where clean polymeric structures emerged after digestion due to a removal of a significant fraction of organics. PLAS-31 showed a great potential to further degrade even after the end of the 100 days of anaerobic digestion.

Název v anglickém jazyce

Biogas generation potential of starch-and polylactide- based biodegradable plastics

Popis výsledku anglicky

Plastic materials decompose with an extremely slow rate and many decades are required for their complete degradation. Lately, commercial plastics have been partially replaced by biodegradable additives. Polylactic acid (PLA) and starch-based biopolymers are indicative alternatives employed to replace a 50-100 % of the mass of conventional plastic materials. In this work, a conventional and two different biodegradable commercial bags were subjected to single-stage mesophilic anaerobic digestion for 100 days to investigate their degradation performance and examine their biogas and methane production potential. LDPE-based plastic (LDPE-50) decomposed only negligibly producing 0.0785 m3 kgVS-1 of methane after 100 days of digestion whereas PLA-based bioplastic (PLAS-31) showed a better degradation performance (0.1782 m3 kgVS-1). A methane production of 0.1941 m3 kgVS-1 was attained from a second type of PLA-based biodegradable bag (PLAS-13) indicating that bioplastics under specific anaerobic digestion conditions could provide a significant amount of biogas. The degradable organic material in bioplastics was the principal factor defining their conversion to biogas and methane. Anaerobic digestion had a minimal impact on the surface of LDPE-50, while the most significant modification of surface was seen for PLAS-13 where clean polymeric structures emerged after digestion due to a removal of a significant fraction of organics. PLAS-31 showed a great potential to further degrade even after the end of the 100 days of anaerobic digestion.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

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OECD FORD obor

20700 - Environmental engineering

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Waste Forum

ISSN

1804-0195

e-ISSN

1804-0195

Svazek periodika

neuveden

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

10

Strana od-do

21-31

Kód UT WoS článku

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EID výsledku v databázi Scopus

2-s2.0-85151294533