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Volume 8, Issue 8 (Suppl)

J Earth Sci Clim Change

ISSN: 2157-7617 JESCC, an open access journal

Earth Science Congress 2017

September 18-19, 2017

September 18-19, 2017 Hong Kong

6

th

International Conference on

Earth Science and Climate Change

A practical approach to CO

2

sequestration: Reactions with high salinity water

Muftah H El-Naas

Qatar University, Qatar

C

arbon dioxide is known to be a major contributor to global warming and climate change and hence has an adverse effect

on environmental sustainability. CO

2

is emitted by various activities associated with industrial processes and the burning

of various types of carbonaceous fuels such as coal, oil and gas. Over the past few years, there has been a considerable amount

of interest in carbon capture and storage (CCS) as an option to mitigate the harmful effects of CO

2

emissions. This study

evaluates a new approach to the capture and sequestration of CO

2

through reactions with high salinity water in the presence of

an alkaline agent. Processes such as the Solvay process have been successful in utilizing the reactions of CO

2

with ammoniated

high salinity water to sodium bicarbonate. This process, however, suffers from several drawbacks such as inefficient contact

mechanism and the need for the regeneration of ammonia as alkaline catalyst in the process. Such drawbacks have been

addressed through developing a new, inert particles reactor system that offers efficient mixing and stable operation. At the

same time, carbon dioxide is reacted with high salinity water in the presence calcium hydroxide instead of ammonia to provide

the alkalinity needed for the reaction of CO

2

and NaCl. The new process and reactor system were able to achieve high CO

2

capture efficiency (up to 99%) and effective reduction in water salinity (up to 40%), while storing the CO

2

in a stable solid form,

namely sodium bicarbonate. The new process can utilize any alkaline solid waste and the inert particles reactor system can be

used to capture CO

2

from different sources such as natural gas or flue gas.

Biography

Muftah H El-Naas is a QAFCO Chair Professor in Chemical Process Engineering at the Gas Processing Center, College of Engineering, Qatar University. He

has completed his BASc degree in Chemical Engineering from the University of British Columbia, Canada, MEng and PhD in Chemical Engineering from McGill

University, Canada. He has previously served as Chair of the Chemical and Petroleum Engineering Department, Director of the Petroleum Science and Engineering

Graduate Program and Director of Research Funding at the UAE University. He has authored more than 150 papers in international journals and conferences,

in addition to several book chapters and patent applications. His area of expertise includes CO

2

capture and sequestration, biotechnology, water treatment

and purification, membrane separation and plasma technology. Most of his recent research work focuses on the development of new, environmental-friendly

technologies for the oil and gas industry.

muftah@qu.edu.qa

Muftah H El-Naas, J Earth Sci Clim Change 2017, 8:8 (Suppl)

DOI: 10.4172/2157-7617-C1-030