New insights into nitrogen control strategies in sewage sludge pyrolysis toward environmental and economic sustainability

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

16 Scopus Citations
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Author(s)

  • Mian Hu
  • Jiajia Ma
  • Zhuoran Jiang
  • Junliang Wang
  • Zhiyan Pan
  • Zhong-Ting Hu
  • Suqin Tang
  • Ramon Beims

Detail(s)

Original languageEnglish
Article number163326
Journal / PublicationScience of the Total Environment
Volume882
Online published6 Apr 2023
Publication statusPublished - 15 Jul 2023
Externally publishedYes

Abstract

Sewage sludge (SS) contains a certain amount of nitrogen (N), resulting in various content of N in the pyrolysis products. Investigates on how to control the generation of NH3 and HCN (deleterious gas-N species) or convert it to N2 and maximize transforming N in sewage sludge (SS-N) into potentially valuable N-containing products (such as char-N and/or liquid-N) are of great significance for SS management. Understanding the nitrogen migration and transformation (NMT) mechanisms in SS during the pyrolysis process is essential for investigating the aforementioned issues. Therefore, in this review, the N content and species in SS are summarized, and the influencing factors during the SS pyrolysis process (such as temperature, minerals, atmosphere, and heating rate) that affect NMT in char, gas, and liquid products are analyzed. Furthermore, N control strategies in SS pyrolysis products are proposed toward environmental and economic sustainability. Finally, the state-of-the-art of current research and future prospects are summarized, with a focus on the generation of value-added liquid-N and char-N products, while concurrently reducing NOx emission. © 2023 Elsevier B.V.

Research Area(s)

  • Nitrogen control strategy, Nitrogen migration and transformation, Pyrolysis products, Sewage sludge, Value-added nitrogen-containing products

Citation Format(s)

New insights into nitrogen control strategies in sewage sludge pyrolysis toward environmental and economic sustainability. / Hu, Mian; Ma, Jiajia; Jiang, Zhuoran et al.
In: Science of the Total Environment, Vol. 882, 163326, 15.07.2023.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review