posted on 2024-06-26, 14:18authored byMohammad Al-Harahsheh, Aiman Al-Rawajfeh, Raghad Al-Khatib
The
purpose of carbon capture and sequestration (CCS)
is to reduce
CO2 emissions from the use of fossil fuel. In this article,
the effect of seeding on the Dead Sea water (DSW) CO2 storage
capacity was investigated. Three types of seed particles were used:
rocks from the bottom of the DS, amorphous silica, and quartz sand;
the influence of each type on the storage capacity of DSW toward CO2 was studied. When seeds were added to DSW during or after
CO2 injection, different solid precipitates were formed
depending on the seed type; with rock seeds collected from the DS
basin, calcite and dolomite precipitates were formed, while aragonite,
magnesite, and monohydrocalcite were precipitated when amorphous silica
was used as seed. Quartz sand was used as received and also after
acid washing; aragonite, magnesite, and monohydrocalcite were precipitated
on the as-received sand, while no precipitate was observed on the
acid-washed quartz sand. It was concluded that carbonate precipitation
followed the crystal structure of the seed; the main condition for
the overgrowth of one crystalline phase over another was crystal lattice
compatibility. The crystal structure of the purified quartz was not
found to be a good seed to the overgrowth of calcium or magnesium
carbonate.