Investigations of the recycling of airbag filters from the cement industry into fabric/polymer or fabric/cement composite materials

Abstract

The cement industry, an essential contributor to global infrastructure development, generates substantial amounts of airborne pollutants during cement production processes. Bag filters play a crucial role in mitigating these emissions by capturing particulate matter and improving air quality. However, conventional bag filters eventually wear out and need replacement, leading to a significant environmental burden from discarded filter materials. This study explores a sustainable approach to address this issue by investigating the potential of recycling used bag filters from the cement industry. The focus of the investigation is on fabric/polymer or fabric/cement composite materials, which exhibit promising properties for recycling applications. The research begins with an in-depth analysis of the discarded bag filters. This characterization enables the selection and optimization of suitable recycling processes for fabric/polymer or fabric/cement composites. Furthermore, the study evaluates the performance of recycled fabric/polymer or fabric/cement composites as alternatives to conventional methods of bag filters in cement recycling and mechanical parameters of the airbag filter when used as reinforcement in the polyester matrix or cementitious composites. In conclusion, recycling bag filters of the cement industry in fabric/polymer or fabric/cement composite materials offers a promising avenue for reducing waste generation and enhancing resource efficiency. The study underscores the importance of transitioning towards circular economy principles in industrial processes. Recycling bag filters in the cement industry is a sustainable approach that supports environmental responsibility and contributes to the circular economy. It helps conserve resources, reduce waste, and minimize industry’s impact on the environment.