Multi-objective utilization of wood waste recycled from construction and demolition (C&D): Products and characterization. (15th July 2022)

• Record Type: Journal Article
• Authors: Khodaei, H.; Olson, C.; Patino, D.; Rico, J.; Jin, Q.; Boateng, A.
• Is Part Of: Waste management. Volume 149(2022)
• Page Start: 228
• Page End: 238
• Publication Date: 2022-07-15
• Subjects: Combined combustion and slow pyrolysis -- Wood waste -- Biochar -- Thermal energy; Hazardous wastes -- Periodicals; Refuse and refuse disposal -- Periodicals; 363.728
• DOI: 10.1016/j.wasman.2022.06.021
• Languages: English
• ISSNs: 0956-053X

Abstract

Graphical abstract: Highlights: Coincide production of thermal energy and biochar from C&D. An algorithm for estimating of temperature in indirect slow pyrolysis rotary units. Combined self independent clean energy production unit. Proposed solutions for the main challenges associated with C&D thermal conversion. Carbon capturing, emission and waste reduction and high value carbon. Abstract: Producing energy and higher value bio-products from waste materials has been proposed as an economically viable opportunity in the renewable energy sector. However, several challenges associated with the integrated biomass conversion processes remain to be resolved. The present study introduces a multi-faceted plant production of thermal energy and biochar from construction and demolition (C&D) wood chips. The overarching objective of the study is to reduce waste materials while simultaneously producing a self-independent clean thermal energy resource along with value-added co-products such as biochar, biogases and/or activated carbon. The combined thermal energy and slow pyrolysis unit relies on 95% of its energy from waste wood chips to produce thermal energy and high value carbon products. The system not only supplies the energy required for the indirect pyrolysis unit but also provides a major portion of thermal energy demanded for the site. A multi-purpose objective of wood waste management, energy production from waste material, high-quality biochar from waste wood (over 80% carbon), and carbon offsets is demonstrated through the utilization of this plant by addressing some of the major previously problems and challenges faced. The information is useful for techno-economic and life cycle analysis in the next study.