Details

Autor(en) / Beteiligte

• Hou, Tingting
• Song, Hao
• Cui, Zhiqiang
• He, Chao
• Liu, Liang
• Li, Pengfei
• Li, Gang
• Zhang, Quanguo
• Zhang, Zhenya
• Lei, Zhongfang
• Litti, Yuri V.
• Jiao, Youzhou

Titel

Nanobubble technology to enhance energy recovery from anaerobic digestion of organic solid wastes: Potential mechanisms and recent advancements

Ist Teil von

• The Science of the total environment, 2024-06, Vol.931, p.172885-172885, Article 172885

Ort / Verlag

Netherlands: Elsevier B.V

Erscheinungsjahr

2024

Link zum Volltext

Quelle

MEDLINE

Beschreibungen/Notizen

• Nanobubble (NB) technology has gained popularity in the environmental field owing to its distinctive characteristics and ecological safety. More recently, the application of NB technology in anaerobic digestion (AD) systems has been proven to promote substrate degradation and boost the production of biogas (H2 and/or CH4). This review presents the recent advancements in the application of NB technology in AD systems. Meanwhile, it also sheds light on the underlying mechanisms of NB technology that contribute to the enhanced biogas production from AD of organic solid wastes. Specifically, the working principles of the NB generator are first summarized, and then the structure of the NB generator is optimized to accommodate the demand for NB characteristics in the AD system. Subsequently, it delves into a detailed discussion of how the addition of nanobubble water (NBW) affects AD performance and the different factors that NB can potentially contribute. As a simple and environmentally friendly additive, NBW was commonly used in the AD process to enhance the fluidity and mass transfer characteristics of digestate. Additionally, NB has the potential to enhance the functionality of different types of microbial enzymes that play crucial roles in the AD process. This includes boosting extracellular hydrolase activities, optimizing coenzyme F420, and improving cellulase function. Finally, it is proposed that NBW has development potential for the pretreatment of substrate and inoculum, with future development being directed towards this aim. [Display omitted] •OH produced by the collapse of NB is beneficial for the oxidation of organic matter.•NB could buffer adverse factors to alleviate environmental inhibition of AD reactors.•NB could improve the enzymes activities and microbial diversity in the AD system.•The high water mobility of NB could increase the nutrient transport efficiency.