Abstract
This work is aimed at the development of innovative, easy and cheap methods for the stabilization, inertization and valorisation of the organic fraction of municipal solid waste (OFMSW). For the first time, two original processes for transforming the organic waste into an inert, odorless and sanitized material were here proposed. The first one, called dual step, starts with grinding of the OFMSW, by means of an industrial shredder. After being finely ground, the organic waste was exposed to a sterilization process by means of UV/ozone radiations or thermal treatment (stabilization phase) in order to obtain a complete removal of the OFMSW’s bacterial activity. By means of several microbiological analyses, the best sterilization method was chosen. The incorporation in a thermosetting matrix was, then, carried out through mixing the sterilized and finely ground organic waste into a water soluble urea formaldehyde (UF) based resin, with a formaldehyde content less than 1% wt, followed by a thermal treatment for UF-resin crosslinking (inertization phase). An alternative cheaper and easier process, called one step, was also proposed and investigated, by combining the sterilization with the curing thermal process (at higher temperature) of the thermosetting matrix. The preliminary experimental results reported in this paper suggest that both the proposed methods could be considered suitable for the production of high valorized innovative OFMSW-derived panels or bricks that could find application in several fields, such as building or construction materials. Finally, a brief description of the prototype machinery, properly designed for implementing OFMSW stabilization and valorization processes, is reported.
Highlights
One of the major challenges in waste management and disposal are the excessive waste streams deriving from the different sectors of the current linear economic model
2020in research and (DFROBOT,Milano,Italycompany, city,supported state abbrev if USA, country) was placed tangential innovation program, aimed to realize an automated machinery, with different sizes depending on place where it has to be installed, for targeted treatment of the conferred OFMSW by means of its transformation in an inertised, valorised and identifiable products that can be used for different purposes
The inertization and stabilisation allow a harmless and advantageous lasting storability of the treated- OFMSW; The harmlessness over time guarantees the eco-sustainability regardless subsequent path of the OFMSW-derived panels-bricks produced by the machinery; The waste’s valorisation allows an extension of the possibilities of its reuse; The Radio Frequency identification (RFID) by using suitable wide-band low-cost passive UHF tags allows the traceability of the machinery’s products ensuring targeted and optimal management of the re-use or storage of the valorized products; The codified identification allows the computerized management ensuring advantages for the public entities and citizens
Summary
One of the major challenges in waste management and disposal are the excessive waste streams deriving from the different sectors of the current linear economic model. Municipal waste accounts for only about 10% of the total waste generated [1]. Municipal solid waste consists of waste collected by or on behalf of municipal authorities and disposed through the waste management system [2]. The amount of municipal solid waste, globally collected per year, is approximately 1.3 × 1012 t and it is expected to rise up to 2.2 × 1012 t per year by 2025 [3]. Municipal solid waste contains a significant fraction of paper, food waste, wood and yard trimmings, cotton, glass, metals and leather, as well as derivatives of fossil raw materials such as.
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
