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Eggshell based biochar for highly efficient adsorption and recovery of phosphorus from aqueous solution: Kinetics, mechanism and potential as phosphorus fertilizer.
Sun, Chengyou; Cao, Heng; Huang, Chao; Wang, Ping; Yin, Jinglin; Liu, Hao; Tian, Haoran; Xu, Haiyin; Zhu, Jian; Liu, Zhiming.
Afiliación
  • Sun C; College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China.
  • Cao H; College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China.
  • Huang C; College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China; Faculty of Life Science and Technology, Central South University of Forestry and Technology, Changsha 410004, China. Electronic address: huangchao@csuft.edu.cn.
  • Wang P; College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China.
  • Yin J; College of Science, Central South University of Forestry and Technology, Changsha 410004, China.
  • Liu H; College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China.
  • Tian H; College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China.
  • Xu H; College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China.
  • Zhu J; College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China.
  • Liu Z; Department of Biology, Eastern New Mexico University, Portales, NM 88130, USA.
Bioresour Technol ; 362: 127851, 2022 Oct.
Article en En | MEDLINE | ID: mdl-36031128
ABSTRACT
Development of an efficient and green adsorbent is of great significance for phosphorus removal and recovery from eutrophic water. This work prepared an eggshell modified biochar (ESBC) by co-pyrolysis of eggshells and corn stalk. ESBC exhibited an excellent performance for phosphorus adsorption over a wide pH range (5-13), and achieved a maximum adsorption of 557.0 mg P/g. The adsorption process was well fitted by pseudo-second-order model (R2 > 0.962) and Sips model (R2 > 0.965), and it was endothermic (ΔH0 > 0) and spontaneous (ΔG0 < 0) according to thermodynamic analysis. The column experiment confirmed the feasibility of ESBC as a filter media for phosphorus removal in flow condition, and obtained a P removal of 460.0 mg/g. Soil burial tests indicated P-laden ESBC has a good P slow-release performance (maintained for up to 25 days). Overall, ESBC has a promising application potential as an efficient adsorbent for phosphorus recovery and subsequently as a slow-release fertilizer.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Fósforo / Contaminantes Químicos del Agua Límite: Animals Idioma: En Revista: Bioresour Technol Asunto de la revista: ENGENHARIA BIOMEDICA Año: 2022 Tipo del documento: Article País de afiliación: China
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Fósforo / Contaminantes Químicos del Agua Límite: Animals Idioma: En Revista: Bioresour Technol Asunto de la revista: ENGENHARIA BIOMEDICA Año: 2022 Tipo del documento: Article País de afiliación: China