Recycling Organic Fraction of Municipal Solid Waste: Systematic Literature Review and Bibliometric Analysis of Research Trends

Abstract

The organic fraction is usually the predominant fraction in municipal solid waste, so its recycling is a potential alternative to disposal in landfill sites, as well as helping to reach targets included in the European Circular Economy Package. The existing body of knowledge in this research field is very large, so a comprehensive review of the existing scientific literature has been considered of interest to provide researchers and professionals with a detailed understanding of the status quo and predict the dynamic directions of this field. A systematic literature review and bibliometric analysis have been performed to provide objective criteria for evaluating the work carried out by researchers and a macroscopic overview of the existing body of knowledge in this field. The analysis of 452 scientific articles published from 1980 to 2019 has shown that the application of composting technologies is relevant, especially since 2014, when policies aimed at reducing emissions to the atmosphere were increased and focused on the use of this waste fraction to produce biogas. Nevertheless, the scientific field is still evolving to impose a model of a circular economy; in fact, emerging studies are being conducted on the production of biomethane, contributing to the decarbonised energy system.

Analyzing the Scientific Evolution of the Sustainable Development Goals

“…Centrality is the degree of interaction of a research topic with other research topics. The density gives an idea of the level of development of that topic, measuring the internal cohesion of all the links between the keywords that describe the topic [43,44]. The diagrams are divided into four quadrants that capture the following four types of research topics:…”

[Retracted] Machine Learning and IoT‐Based Waste Management Model

“…e issues faced by current waste management systems are improper scheduling; that is, the waste collectors do not know that they had to pick the waste. ey also do not know precisely about the drop-off location [6]. One significant application is that IoT innovation has become an effective apparatus to manufacture brilliant urban communities.…”

A Methodological Assessment Based on a Systematic Review of Circular Economy and Bioenergy Addressed by Education and Communication

“…With this process, in addition to identifying the relevant publications of the areas of study, their formal characteristics were identified. Below in Figure 1, a diagram of the procedure carried out is shown, using the methodological structure of Fernández-González et al [44] as a reference:…”