• XXXVI Inter-American Congress of Sanitary and Environmental Engineering, Guayaquil, Ecuador (October 28-31 2018)

Title: Evaluation of a domestic wastewater treatment plant in an intermediate city in Bolivia

Speaker: Ramiro Escalera

• International Symposium "Education in Resilient Management of Agricultural and Natural Resources", La Paz (March 30-31 2017)

Title: Presence of arsenic in groundwater in peri-urban areas - development of economic removal technologies
Speaker: Ramiro Escalera

• XXVIII Inter-American Congress of Chemical Engineering, Cusco, Perú (October 10-12 2016)

Title: Development of a dry milling process for bitter quinoa grains, based on the application of a jet type fluidized bed
Speaker: Ramiro Escalera

• XXVIII Inter-American Congress of Chemical Engineering, Cusco, Perú (October 10-12 2016)

Title: Development of a colored textile wastewater recycling system using a solar photoreactor
Speaker: Ramiro Escalera

• XXVII Inter-American and Colombian Congress of Engineering, Cartagena de Indias – Colombia (October 6 – 8, 2014)

Title: Minimization of chrome residues in leather tanning
Speaker: Ramiro Escalera

• XV Bolivarian Congress of Sanitary and Environmental Engineering, Cochabamba, Bolivia (November 20– 22, 2013)

Title: Natural presence of arsenic and its removal in drinking water, using solar collectors in Cochabamba - Bolivia
Speaker: Ramiro Escalera

• 62nd Canadian Chemical Engineering Conference, Vancouver, B.C. (October 14 – 17, 2012)

Title: A novel dry process for saponins removal applied to bitter quinoa ecotypes in Spouted Bed Reactor (SBR)
Speaker: Ramiro Escalera

• The 4th International Congress on Arsenic in the Environment - Understanding the Geological-Medical Interface of Arsenic, Cairns, Australia (July 22-27 2012)

Title: Natural arsenic occurrence and its removal from drinking water using a tubular photo-reactor enhanced with a solar concentrator in Cochabamba, Bolivia
M. Ormachea, L. Huallpara, J. Quintanilla, O. Ormachea, R. Escalera and Bhattacharya
Speaker: Bhattacharya

• Annual Meeting Geological Society of America, Colorado Convention Center, Denver, USA (October 31 – November 3, 2010)

Title: Solar UV radiation assisted As(V) removal (SORAS) from ground waters by means of a semi-circular section tubular photo-reactor
Speaker: Ramiro Escalera

• 8th World Congress of Chemical Engineering, University of Montreal, Montreal, Canada (August 23, 2009)

Title: Novel Method for Measuring Cr (III) in Tanning Liquors
Speaker: Ramiro Escalera

• Fourth Contest of Projects in Science, Technology and Innovation Applied to the Productive Sector (Cochabamba, June 2009)

Organizer: Cámara Departamental de Industria.
Title: Reuse of excess water from the soap making process in Unilever Andina Bolivia
Speaker: Ramiro Escalera

• Fourth Contest of Projects in Science, Technology and Innovation Applied to the Productive Sector (Cochabamba, June 2009)

Organizer: Cámara Departamental de Industria,
Title: Optimization of the use of electrical energy in Unilever Andina Bolivia
Speaker: Ramiro Escalera

• 13th Anniversary of the College of Chemical Engineers of Bolivia

Organizer: College of Chemical Engineers of Bolivia. Cochabamba October 27 2007.
Title: Chemical Engineer Versatility
Speaker: Ramiro Escalera

• Third Contest of Projects in Science, Technology and Innovation Applied to Industry

Organizer: Cámara Departamental de Industria, Cochabamba, August 31 2007.
Title: Technical and economic study for the production of carboxymethyl cellulose from cotton linter for Empresa Derivados Ltda
Speaker: Ramiro Escalera

• Bolivian Association of Technical Leather Chemists Congress, ABOQUITEC (Cochabamba, October 10 2006)

Title: Minimization of chromium residues by applying a direct recycling technique at the Culen de Valenzuela Company - Successful application
Speaker: Ramiro Escalera

• Meeting of Delegates of the Trinational Commission for the Integrated Management and Master Plan of the Pilcomayo River Basin, Asunción - Paraguay (October 5 2006)

Title: Interpretation from the chemical-environmental point of view of the results of various studies on mining contamination and others in the Pilcomayo River basin
Speaker: Ramiro Escalera

• Second Contest of Projects in Science, Technology and Innovation Applied to Industry (Cochabamba, September 9 2006)

Organizer: Cámara Departamental de Industria
Title: Minimization of chromium residues by applying a direct recycling technique at the Culen de Valenzuela Company - Successful application
Speaker: Ramiro Escalera

• Cycle of Conferences for Graduate Students of the Universities of Gunma and Shizuoka, Japón, (October-November, 2005)

Title: Environmental Problems and Experiences on the Application of Cleaner Production Techniques by Bolivian Industries
Speaker: Ramiro Escalera