Ultrasonic disintegration of municipal sludge: fundamental mechanisms, process intensification and industrial sono-reactors.
Chempluschem
; : e202400016, 2024 Jul 22.
Article
en En
| MEDLINE
| ID: mdl-39036885
ABSTRACT
Sludge disintegration is an environmental and industrial challenge that requires intensive research and technological development. Sludge contains a complex structure with a high yield of various chemical and biological compounds. Anaerobic digestion is the most used process for sludge disintegration to produce biogas, detoxify the sludge, and generate biosolids that can be used in agricultural. Biological cell lysis is the rate-limiting cell lysis. This review discusses the application of sonolysis as a sludge pretreatment for enhanced anaerobic digestion via three combined processes thermal destruction, hydrochemical shear forces, and radical oxidation. The mechanistic pathways of sono-pretreatment to enhance biogas, sludge-enhanced dewatering, activation of filamentous bacteria, oxidation of organic pollutants, release of heavy metals, reduction of bulking and foaming sludge, and boosting ammonia-oxidizing bacteria activity are discussed in this report. The combination of ultrasound with other chemical processes, such as Fenton and cation binding agents for enhanced sludge disintegration, is discussed. Finally, we reviewed the most common large-scale sono-reactors available on the market for sludge disintegration.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Idioma:
En
Revista:
Chempluschem
Año:
2024
Tipo del documento:
Article
País de afiliación:
España
Pais de publicación:
Alemania