Table of Contents
Journal of Waste Management
Volume 2014, Article ID 807947, 5 pages
Research Article

Wastes to Reduce Emissions from Automotive Diesel Engines

Instituto de Investigación y Formación Agraria y Pesquera, Consejería de Agricultura y Pesca, Junta de Andalucía, Camino de Purchil s/n, P.O. Box 2027, 18080 Granada, Spain

Received 2 September 2013; Revised 18 December 2013; Accepted 1 January 2014; Published 10 February 2014

Academic Editor: Brajesh Dubey

Copyright © 2014 Manuel Jiménez Aguilar. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The objective of the study was actually the investigation of the effect of various treatments on the ability of urine in absorbing greenhouse gases. Urine alone or mixed with olive-oil-mill waste waters (O), poultry litter (P), or sewage sludge (S) was used on the absorption of CO2 and NOx from diesel exhaust. The absorption coefficient (0.98–0.29 g CO2/grNH4) was similar to other solvents such as ammonia and amines. The ranges of CO2 absorption(1.7–5.6) g/l and NO reduction (0.9–3.7) g/l in six hours indicate that on average 20 litres of urine could be needed to capture CO2 and vehicle emissions from each covered kilometre. The best results of CO2 absorption and reduction were for urine mixed with O, P and urine alone. These wastes could be used to capture CO2 and from automotive diesel engines to reduce gas emissions. The proposed strategy requires further research to increase CO2 absorption and reduce the risks associated with waste-water reuse.