Descriptions On behalf of the Organizing and Advisory Committee we take great pleasure in welcoming academic scientists, researchers, research scholars, students, engineers and experts of application fields to Las Vegas, USA for the 3rdedition of Green Chemistry and Engineering conference to foster the progress in the field by contributing with your expertise to what promises to be a very comprehensive and exciting meeting, and to enjoy the immense unique artistic heritage and wonderful landscape of USA. 3rd International Conference & Expo on Green Chemistry and Engineering (ICEGCE-2019), which will be held during July 11-12, 2019 at Las Vegas, USA is now an established event, attracting global participant’s intent on sharing, exchanging and exploring new avenues of Green Chemistry and Engineering and related research and latest developments. The event will have 2-3 world level (Highly cited class) plenary speakers, established Keynote speakers, active Invited speakers and fresh contributed speakers. In addition, variety of poster presentations along with workshops and special sessions would be interested in audience. The aim of the ICEGCE-2019 is exploring the Advances and Challenges in Green Chemistry and Engineering between scientists and engineers by bringing together again the world class researchers, International Communities and Industrial heads to discuss the latest developments and innovations in the fields of Green Chemistry and Engineering. We sincerely hope that ICEGCE-2019 serves as an international plat form for meeting researchers from around the world, widen professional contact and create new opportunities, including establishing new collaborations.