Riman added that he and his team used a biologically produced acid called bio lixiviant, which is expected to be less harmful to the environment than traditionally used
mineral acids which are very acidic.
These lubricants cannot contain any carcinogens,
mineral acids or intentionally heavy metals.
Imamutdinova, studying the dissolution of colemanite in various
mineral acids, found that the solubility in H2SO4, H3PO4, HNO3 and HCl solutions were the same, that there was a maximum solubility value for each acid, and researcher expressed that these maximum values varied depending on the acid type and temperature [2].
The typically used
mineral acids are sulfuric acid [30-33, 37, 38, 40-43, 56, 57], hydrochloric acid [58, 59], phosphoric acid [35, 60], hydrobromic acid [61], and their mixed acids [34, 36].
When
mineral acids such as hydrochloric acid or hydrobromic acid are added, hydrogen ions protonate the individual components and the structure falls apart.
Overall, organic acids were more lethal than
mineral acids. When the cells were suspended in a 0.09 M citric acid buffer at pH 4 and then pressure-treated from 350 MPa to 450 MPa, reductions in microbial populations increased from 1.06 logs to 7.33 logs.
Mineral acids are widely used for sample digestion and preservation.
Silk is resistant to most
mineral acids, except for sulphuric acid, which dissolves it.
It is resistant in most organic acids,
mineral acids as well as in strong alkaline and saline solutions.
Miri also uses age-old crafting practices -- the wool is prepared for dyeing using natural mineral salts and
mineral acids, such as lactic and citric acids, found in yoghurt and lime.