Preliminary investigations on the carbon dioxide sequestering potential of the ultramafic rock

Energy, Transportation and Global Warming

“…This process follows natural chemical transformations such as weathering of rocks to form carbonates over geologic time periods. Reaction 44.2 illustrates the transformation of the common silicate mineral serpentine (Goff et al 1997), Mg 3 Si 2 O 5 (OH) 4 , and CO 2 into magnesite, MgCO 3 , silica and water. Using this ideal case, 1 ton of serpentine can dispose of approximately one-half ton of CO 2 .…”

Evaluation of ultramafic deposits in the Eastern United States and Puerto Rico as sources of magnesium for carbon dioxide sequestration

“…Goff et al (1997) and Goff and Lackner (1998) also evaluated magnesium resources in large, layered intrusions, the second most voluminous class of ultramatlc rocks. Although volumetrically significant in a few locations in the United States, layered intrusions containing ultramaiic rocks are not significant in the eastern United States or Puerto Rico.…”

“…The dissolution experiments provide a comparison of how easily the magnesium is extracted and how much insoluble residue is contained in the various samples. Results of the dissolution experiments are given in Table 10 and are compared with results from California ultramafic rocks published previously (Goff et al 1997). Rock samples weighing at least 1 kg were cleaned and crushed into fragments.…”

“…Goff and Lackner (1998) evaluated ultramafic bodies in the United States as sources of magnesium for CO, sequestration with an emphasis on two California sites: the Del Puerto ultramtilc mass and the Wilbur Springs serpentinite. The reactivity of various ultramafic rocks, as conducted in simple acid dissolution experiments, was compared by Goff et al (1997). Goff and Guthrie (1999) discussed the geology, tectonics, alteration hktory, present exploitation, and environmental situation of extensive ultramafic deposits in the Clear Lake region, California.…”

Technology for CO{sub 2} emission monitoring and control

“…This process may produce an entirely new industry as more than ample supplies of the necessary minerals are available. An excellent review of the mineral reserves is given by Goff et al [5]. This approach permits a permanent storage option because of the thermodynamic stability of MgCO,.…”