Impact of carbon dioxide on the immobilization potential of cemented wastes: Chromium

A review of accelerated carbonation technology in the treatment of cement-based materials and sequestration of CO2

“…On the other hand, carbonation has been demonstrated to act positively in the immobilisation of heavy metal-contaminated soils and other residues [1][2][3][4][5]. In this patented application [6,7], the use of carbonation has been used to overcome the inhibiting effects of complex waste materials on the hydraulic and pozzolanic reactions responsible for effective solidification [6].…”

Hydrothermal Synthesis and Transition Metal Cations Exchange Characterization of Titanium and [Titanium+Alkali Metals] Substituted-11Å Tobermorites

“…CEC reaction experiments were conducted as follows: 20 mg of each solid were equilibrated for 24h in glass vials with 1 0ml of SO 4 . After period of equilibration (24 h), the solid phases in the glass vials were separated by centrifugation, and a part of the supernatant solution was collected for chemical analysis using atomic absorption spectroscopy (ASS).…”

Effect of limestone fillers on microstructure and permeability due to carbonation of cement pastes under controlled CO 2 pressure conditions

“…Recently, carbonation is applied during S/ S of heavy metals to improve immobilization. By inducing a slight alkali environment, the solubility of many toxic heavy metals is minimized [6,7]. Furthermore, CO 2 sequestration in cement-based materials seems to be one of the promising methods to cut down CO 2 emissions from industrial sources [8].…”