Your browser doesn't support javascript.
loading
Effects of carrier surface hydrophilic modification on sludge granulation: From sludge characteristics, extracellular polymeric substances, and microbial community.
Jin, Yu; Tian, Yu; Xiong, Wei; Wang, Yaoqiang; Xiao, Gang; Wang, Shaojie; Su, Haijia.
Afiliación
  • Jin Y; Beijing Key Laboratory of Bioprocess, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China.
  • Tian Y; Beijing Key Laboratory of Bioprocess, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China.
  • Xiong W; Beijing Key Laboratory of Bioprocess, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China.
  • Wang Y; Beijing Key Laboratory of Bioprocess, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China.
  • Xiao G; Beijing Key Laboratory of Bioprocess, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China.
  • Wang S; Beijing Key Laboratory of Bioprocess, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China. Electronic address: wangshaojie@buct.edu.cn.
  • Su H; Beijing Key Laboratory of Bioprocess, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China. Electronic address: suhj@mail.buct.edu.cn.
Environ Pollut ; 357: 124476, 2024 Sep 15.
Article en En | MEDLINE | ID: mdl-38950844
ABSTRACT
Aerobic granular sludge (AGS) is a powerful biotechnological tool capable of treating multiple pollutants simultaneously. However, the granulation process and pollutant removal efficiency still need to be further improved. In this study, Fe2O3- and MnO2-surface-modified straw foam-based AGS (Fe2O3@SF-AGS and MnO2@SF-AGS), with an average particle size of 3 mm, were developed and evaluated. The results showed that surface modification reduced the hydrophobic groups of carriers, facilitating the attachment and proliferation of microorganisms. Notably, MnO2@SF-AGS showed excellent granulation performance, reaching a stable state about one week earlier than the unmodified SF-AGS. The polymeric substance content of MnO2@SF-AGS was found to be 1.28 times higher than that of the control group. Furthermore, the removal rates for NH4+-N, TN, and TP were enhanced by 27.28%, 12.8%, and 32.14%, respectively. The bacterial communities exhibited significant variations in response to different surface modifications of AGS, with genera such as Saprospiraceae, Terrimonas, and Ferruginibacter playing a crucial role in the formation of AGS and the removal of pollutants specifically in MnO2@SF-AGS. The charge transfer of metal ions of MnO2@SF promotes the granulation process and pollutant removal. These results highlight that MnO2@SF-AGS is an effective strategy for improving nitrogen and phosphorus removal efficiency from wastewater.
Asunto(s)
Palabras clave
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Aguas del Alcantarillado / Eliminación de Residuos Líquidos / Interacciones Hidrofóbicas e Hidrofílicas / Matriz Extracelular de Sustancias Poliméricas Idioma: En Revista: Environ Pollut Asunto de la revista: SAUDE AMBIENTAL Año: 2024 Tipo del documento: Article Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Aguas del Alcantarillado / Eliminación de Residuos Líquidos / Interacciones Hidrofóbicas e Hidrofílicas / Matriz Extracelular de Sustancias Poliméricas Idioma: En Revista: Environ Pollut Asunto de la revista: SAUDE AMBIENTAL Año: 2024 Tipo del documento: Article Pais de publicación: Reino Unido