Details

Autor(en) / Beteiligte

• Wang, Panliang
• Su, Yinglong
• Wu, Dong
• Xie, Bing

Titel

Plasticizers inhibit food waste anaerobic digestion performance by affecting microbial succession and metabolism

Ist Teil von

• Journal of hazardous materials, 2024-07, Vol.473, p.134554-134554, Article 134554

Ort / Verlag

Netherlands: Elsevier B.V

Erscheinungsjahr

2024

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The widely existed plastic additives plasticizers in organic wastes possibly pose negative influences on anaerobic digestion (AD) performance, the direct evidence about the effects of plasticizers on AD performance is still lacking. This study evaluated the influencing mechanism of two typical plasticizers bisphenol A (BPA) and dioctyl phthalate on the whole AD process. Results indicated that plasticizers addition inhibited methane production, and the inhibiting effects were reinforced with the increase of concentration. By contrast, 50 mg/L BPA exhibited the strongest inhibition on methane production. Physicochemical analysis showed plasticizers inhibited the metabolism efficiency of soluble polysaccharide and volatile fatty acids. Microbial communities analyses suggested that plasticizers inhibited the direct interspecies electron transfer participators of methanogenic archaea (especially Methanosarcina) and syntrophic bacteria. Furthermore, plasticizers inhibited the methane metabolisms, key coenzymes (CoB, CoM, CoF420 and methanofuran) biosynthesis and the metabolisms of major organic matters. This study shed light on the effects of plasticizers on AD performance and provided new insights for assessing the influences of plasticizers or plastic additives on the disposal of organic wastes. [Display omitted] •Plasticizers inhibited methane production during AD.•Plasticizers inhibited VFAs transformation and organic metabolisms.•Plasticizers inhibited DIET participators of Methanosarcina and syntrophic bacteria.•Plasticizers inhibited the methane metabolisms and related coenzymes biosynthesis.