Programa del congreso

Abstract- This study analyzes the application of frugal financial models in sustainable community-based recycling and reuse ventures in Colombia and Peru. Using the case method, it examines specific experiences—Recicla y Transforma, Reciclaje Comunitaria, Fui Un Banner (FUB), and Sinba—highlighting circular economy practices, green microfinance strategies, and their economic and environmental impact. Findings show that these models prioritize resource efficiency, social inclusion, and low reliance on external capital. Funding strategies include utility reinvestment, community funds, public-private partnerships, and crowdfunding. Circular practices include waste revalorization, artisanal production, and community-led composting. The economic impact is seen in sustainable income generation, job creation, and financial autonomy. Environmentally, these models reduce waste and emissions. Comparing cases reveals key facilitators such as local networks, social innovation, and institutional support—as well as constraints like limited scale, policy dependency, and lack of formalization. This research contributes both to academic knowledge and to the design of inclusive, sustainable public policies in the Andean Region. Keywords: Green Microfinance, Circular Economy, Frugal Models, and Sustainable Community Entrepreneurship

The cement industry, essential for urban development, faces criticism for its high energy consumption and contribution to global CO₂ emissions. This review systematizes scientific evidence on the use of biomass as a sustainable energy alternative to mitigate emissions, emphasizing technical, economic, and environmental feasibility. The PICO framework was applied to structure the analysis, focusing on clinker production, calcination, biomass use, and other decarbonization strategies. Outcomes included CO₂ reduction and improved energy efficiency. Using the PRISMA protocol, 1,246 records were screened, with 52 relevant studies selected from the past six years. Most research was from Europe and Asia, with initial cases in America and Africa. Half the studies used industrial waste like fly ash, while agricultural residues such as rice husk and sugarcane bagasse reduced CO₂ emissions by up to 42 percent and enhanced concrete performance. Applications also showed economic benefits, reducing costs and emissions of NOx, SOx, and particulates by up to 72 percent. Rotary kilns, pyrolysis, and direct blending were the most effective technologies. Evidence indicates that biomass use in cement production supports circular economy principles and emission reduction. Further research is recommended on Peruvian biomass sources like quinoa and coffee residues, and their synergy with solar energy

The textile industry generates a large amount of synthetic plastic waste, which represents an increasingly significant environmental challenge. This systematic literature review explored the circular economy strategies implemented between 2020 and 2025 to reincorporate this waste into the textile supply chain.
The search was conducted using the PICOC model in academic databases such as Scopus and Web of Science, allowing for the selection of 37 studies aligned with specific criteria. The analysis was organized around five axes: type of waste, reintegration technologies, comparison with linear models, supply chain efficiency, and integration mechanisms.
A transition toward circular models was identified that employ technologies such as mechanical and chemical recycling, blockchain, digital traceability, and design for disassembly. These practices allow the reincorporation of materials such as polyester, nylon, and acrylics into production processes, reducing dependence on virgin polymers and improving operational efficiency. Despite progress, technical, economic, and regulatory challenges persist that hinder wider adoption. The circular approach is presented as an effective way to transform the textile sector, provided it is accompanied by technological innovation, appropriate regulatory frameworks, and collaboration between the various actors in the chain.
Keywords: circular economy, textile waste, textile industry, recycling, innovation.

Digestate, a byproduct of anaerobic digestion, presents growing potential for industrial applications derived from organic and industrial waste. However, its use is still limited due to variability in its composition, which affects its quality and suitability for reuse. This systematic literature review aims to identify and analyze the most effective treatment methods applied to digestate, considering its source and potential uses in various industries. A total of 1,366 documents published in the last five years were retrieved from the Scopus database. After applying defined inclusion and exclusion criteria through a structured screening process, 51 open-access articles were selected for in-depth analysis. The findings reveal that the most commonly applied treatments are solid-liquid separation, hydrothermal carbonization, and membrane technologies. These methods enhance digestate manageability, reduce pathogens, and enable carbon capture or nutrient recovery. The most frequent feedstocks include pig and cattle manure, agricultural residues, and sewage sludge, with predominant applications in the agricultural sector as fertilizers or soil amendments. Some cases also demonstrate energy recovery potential due to the digestate's carbon content. In conclusion, digestate when adequately treated can play a critical role in advancing industrial sustainability and promoting a circular economy by transforming organic waste into valuable resources.

This research proposes the design of an emission purification system based on a filter made from activated sugarcane bagasse, aimed at reducing pollution generated by rotisserie chicken restaurants (pollerías) in Chorrillos, Lima. The methodology was quasi-experimental with a mixed approach, using passive sampling and measurements through the Airecare application, along with experimental tests in a simulated system. The filter was developed through pyrolysis and chemical activation with vinegar, resulting in a material with good adsorption capacity that visibly reduced the smoke plume in terms of color, odor, and persistence in the air. The system, composed of a metal box, a PVC tube, and a fan, effectively simulated a pollería chimney. In parallel, cadmium (Cd) analysis in air revealed concentrations ranging from 0.0108 to 0.0304 µg/m³, all below the Peruvian Environmental Quality Standard (ECA) limit of 0.09 µg/m³, with the highest value recorded at point P1, located on an active chimney.

The treatment of industrial wastewater in emerging economies remains a structural challenge, particularly in sectors such as textiles, mining, and agro-industry, where access to effective and affordable technologies is still limited. In this context, frugal technologies have gained prominence due to their low cost, operational simplicity, and potential for local adaptation. The objective of this study was to conduct a systematic review of frugal technologies applied to the treatment of industrial wastewater between 2015 and 2025. The PICOC framework and PRISMA guidelines were applied, complemented by a bibliometric analysis using VOSviewer. Following a rigorous selection process, 39 articles meeting specific methodological and geographical criteria were analyzed. The results enabled the classification of seven technological types, with bioadsorption, phytoremediation, and simplified advanced oxidation being the most frequent, achieving removal efficiencies ranging from 60% to 99%, depending on the contaminant. Furthermore, 15 critical success factors were identified, with operational simplicity, the use of locally available materials, and pilot-scale validation emerging as key determinants. Only 20% of the technologies demonstrated high scalability, although 60% showed strong replicability under similar conditions. It is concluded that frugal technologies represent a concrete pathway toward more efficient, inclusive, and sustainable industrial water management aligned with SDGs 6,9,and12.

Ensuring production quality is critical to the sustainability and profitability of small-scale manufacturing enterprises. Within the chocolate industry, the presence of defective products undermines both operational efficiency and market competitiveness. Despite this, many companies still operate without standardized procedures to mitigate errors and control production costs, resulting in economic losses and compromised quality. This study evaluates the impact of designing and implementing a Procedures Manual on the reduction of product defects in a chocolate manufacturing company. A non-experimental, quantitative research design was employed, analyzing cost indicators before and after the intervention. The findings revealed a substantial decrease in defective outputs, yielding a total economic gain of US$ 6,401.83, an Internal Rate of Return (IRR) of 68%, a Net Present Value (NPV) of US$ 4,736.83, and a Benefit-Cost ratio of 3.84. These results underscore the importance of standardization in small-scale manufacturing environments, highlighting how procedural implementation can significantly enhance production efficiency, profitability, and market competitiveness.