Qa'dah 3, 1431/Oct 11, 2010, SPA-- The 2nd Second International Conference of Chemical Engineering started here today with the participation of Saudi Arabia, the United Arab Emirates, Yemen, Palestine, Algeria, Iraq, Bahrain, Tunisia, Oman, Iran, Jordan, France and Spain. The conference will discuss the roles of chemical engineering in economic development and finding solutions to the issues of water scarcity, the alternative energy and environmental problems.