# Efficient and Sustainable Cleaning: A Comparative Analysis of Cryogenic Technology
## 5 Conclusions  
A comprehensive analysis of cryogenic cleaning systems identified a number of options that, in addition to meeting technical requirements in a variety of industrial applications, were distinguished by their efficiency and commitment to sustainability. This study provides a solid foundation for making informed and strategic decisions regarding the purchase of dry ice blasting equipment, offering a comprehensive guide based on rigorous evaluation criteria.  
The selection of equipment that maximises operational efficiency while minimising environmental impact is critical. The equipment evaluated showed significant differences in energy consumption, operating pressure and cleaning performance. For example, the results showed that equipment that operates at lower pressures and uses less energy without compromising cleaning effectiveness is more sustainable and economical in the long term.  
Cryogenic cleaning systems are directly aligned with several of the UN's 2030 Sustainable Development Goals (SDGs) [73], particularly those related to reducing the water footprint (SDG 6), the efficiency and sustainability of industrial infrastructure (SDG 9), creating cleaner urban environments (SDG 11), and reducing carbon emissions (SDG 13). This study highlights the importance of adopting technologies that are not only effective but also promote environmental sustainability.  
The equipment selection process included a detailed evaluation of criteria such as weight without accessories, power supply, and energy consumption. The importance of these factors in choosing suitable equipment for various industrial applications was highlighted, ensuring that the equipment selected was not only efficient in terms of performance but also sustainable and easy to use.  
In a context where operational efficiency and environmental sustainability are increasingly prioritised, the correct selection of dry ice cleaning equipment is crucial. This article addresses this critical need by providing a detailed framework for equipment evaluation and selection. This will contribute to the body of knowledge on dry ice blasting, supporting innovation and the adoption of sustainability practices within the sector. The methodology and analyses presented are intended to serve as a resource for future experimental research projects and developments in the field of cryogenic cleaning.  
The adoption of SDG-aligned technology for cryogenic cleaning represents a significant step towards more sustainable and responsible industrial practices, promoting a positive impact on both operational efficiency and environmental protection.  
Conceptualization, V.S.-C. and A.V.-B.; methodology, V.S.-C. and A.V.-B.; investigation, A.V.-B., V.S.-C., L.O.-C., and M.S.-P.; resources, A.V.-B., V.S.-C., L.O.-C., and M.S.-P.; writing--original draft preparation, A.V.-B., V.S.-C., L.O.-C., and M.S.-P.; writing--review and editing, A.V.-B., V.S.-C., L.O.-C., and P.B.-R.; supervision, V.S.-C.; project administration, V.S.-C.; funding acquisition, V.S.-C. All authors have read and agreed to the published version of the manuscript.  
The authors would like to acknowledge the support received for this research from the Vice-Rectorate for Research of the Polytechnic University of Valencia (PAID-11-22), grant number PID2022-139433 OB-I00, as well as the collaboration with Istobal S.A., facilitated by the ISTOBAL Chair of the Polytechnic University of Valencia (UPV). Funding for open access charge: Universitat Politecnica de Valencia.  
Not applicable.  
The raw data supporting the conclusions of this article will be made available by the authors on request.  
Conflicts of Interest: The funders had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript; or in the decision to publish the results.