Dundee Sustainable Technologies Inc.: Appointment of Chairman Emeritus

MONTREAL, QUEBEC--(Marketwired - April 29, 2015) - Dundee Sustainable Technologies Inc. ("DST" or the "Corporation") (CSE:DST) is pleased to announce, by unanimous resolution of the Board of Directors, the appointment of Dr. Jean-Marc Lalancette as Chairman Emeritus of the Corporation. Dr. Lalancette holds a Ph.D. (Chemistry) from Université de Montréal (1960). He is a professor Emeritus of the Université de Sherbrooke and the author of more than 100 patents related to mineral chemistry and problem solving in environmental science. His contributions have been acknowledged by several awards, including the Manning Award in 1985 for the development of a safer form of asbestos. Dr. Lalancette is the author of DST's technology and served as director and Vice-President of Research and Development of DST since its incorporation and until February 1, 2015. Dr. Lalancette announced his semi-retirement and resigned as director and officer of the Corporation earlier this year but keeps an active role in the development of DST technologies and the Corporation wishes to acknowledge his invaluable contribution.

About Dundee Sustainable Technologies, a company controlled by Dundee Corporation

DST is engaged in the development of technologies for the treatment of refractory ores containing sulfides and arsenic. Dundee Technologies has developed proprietary hydrometallurgical processes, and owns the related patents, for the extraction of precious and base metals from ores, concentrates and tailings, which cannot be extracted with conventional processes because of metallurgical issues or environmental considerations.

DST's patented approach provides a cyanide-free process to allow the exploitation of gold and other deposits that would otherwise face metallurgical issues with conventional methods. The primary benefits of the innovative technology are shorter processing times, a closed-loop operation eliminating the need for costly tailings pond, reduced environmental footprint related to inert and stable characteristics of the tailings, and lesser emissions due to lower energy consumption.

The process developed by DST is a recognized "green technology" for which it was awarded a $5.7 million grant towards the construction of a $25 million demonstration plant. The completed commissioning of the demonstration plant is scheduled for the second quarter of 2015. With a capacity of 15 tonnes per day, the demonstration plant will serve as a proof of concept for the chlorination extraction technology on an industrial scale and under continuous operating conditions.

DST has tested several different gold deposits, both oxide and sulfide ores at the lab level and at its pilot plant. These tests have, consistently achieved gold recoveries in excess of 90%, using chlorination instead of cyanide.

FORWARD LOOKING STATEMENTS: This press release contains forward-looking statements that address future events and conditions, which are subject to various risks and uncertainties. Actual results could differ materially from those anticipated in such forward- looking statements as a result of numerous factors, some of which may be beyond the Corporation's control. These factors include: results of exploration activities, general market and industry conditions, and other risks disclosed in the Corporation's filings with Canadian Securities Regulators.

Forward-looking statements are based on the expectations and opinions of the Corporation's management on the date the statements are made. The assumptions used in the preparation of such statements, although considered reasonable at the time of preparation, may prove to be imprecise and, as such, undue reliance should not be placed on forward-looking statements. The Corporation expressly disclaims any intention or obligation to update or revise any forward-looking statements whether as a result of new information, future events or otherwise, except as required by applicable law. Depending on exploration results and available financing, the Corporation may at any point modify its work program.

The Canadian Securities Exchange has in no way passed upon the merits of the proposed transaction and has neither approved nor disapproved the contents of this press release.