Combustion behavior of refuse-derived fuel produced from sewage sludge and rice husk/wood sawdust using thermogravimetric and mass spectrometric analyses. (10th June 2019)

• Record Type: Journal Article
• Authors: Wang, Teng; Hou, Haobo; Ye, Yang; Rong, Hao; Li, Jinping; Xue, Yongjie
• Is Part Of: Journal of cleaner production. Volume 222(2019)
• Page Start: 1
• Page End: 11
• Publication Date: 2019-06-10
• Subjects: Sewage sludge -- Biomass -- Co-combustion -- Gas emissions -- Kinetics; Factory and trade waste -- Management -- Periodicals; Manufactures -- Environmental aspects -- Periodicals; Déchets industriels -- Gestion -- Périodiques; Usines -- Aspect de l'environnement -- Périodiques; 628.5
• DOI: 10.1016/j.jclepro.2019.03.016
• Languages: English
• ISSNs: 0959-6526

Abstract

Abstract: Waste-to-energy conversion is an environmentally friendly way for disposing of sewage sludge (SS), with this study investigating the use of rice husk (RH) and wood sawdust (WS) as agricultural/forestry wastes for production of sludge-based refuse-derived fuel (RDF). Thermogravimetric and mass spectrometric (TG-MS) analysis has been used to investigate the combustion characteristic, interactions and kinetics of the RDFs, with the gaseous emissions produced during combustion being analyzed. These results reveal that introduction of RH and WS can improve the combustion stability, burnout characteristics and SO2 emission, however, higher NOx (NO and NO2 ) levels are produced. Interactions within the fuel promote combustion of volatiles and the release of SO2 and NO, with a reduction in the reaction of char, as well as the generation of NO2 . Addition of biomass leads to an increase in activation energy of the combustion process for RDF relative to SS, particularly in the presence of RH. Diffusion, interfacial reactions and nucleation processes were shown to be the dominant factors affecting the combustion kinetics of RDF. Highlights: Co-combustion of sludge-derived fuels were performed. Evolved gas analysis were quantified using TG-MS. Ternary interactive effects in co-combustion were identified. Kinetics triplets were determined accurately by non-isothermal method.