Basic Oxygen Furnace slag contains heavy metals, including vanadium, chromium and molybdenum. The leachability of these elements determines the industrial applicability slag-based building products. This study investigates post‑carbonation leaching metals from activated BOF pastes with focus on activator dosage type (sodium potassium citrate). Results reveal that high degree brownmillerite hydr...

Globally, coal-fired power plants are the largest industrial source of carbon dioxide (CO2). CO2 emissions from flue gas have potential for direct mineralization with electrostatic precipitator fly ash particles in the field. Demonstration scale accelerated mineral carbonation (AMC) studies were conducted at the Jim Bridger Power Plant, a large coal fired power plant located in Wyoming, USA. AM...

Carbonation of cement-based materials may lead to durability problems, so that it is necessary find a way reduce the effect carbonation on concrete durability. This study investigated effects cellulose nanofibrils (CNFs) carbonated materials. Two dosages CNFs were used prepare cement pastes and mortars. Before after accelerated (4 % CO 2 concentration 57 relative humidity), their microstructure...

Calcium looping is CO2 capture technology that considered to be technically feasible at an industrial scale using a variety of fuels such as natural gas, coals, biomass, refuse derived fuels, and biofuels. Unfortunately, many these contain significant quantities chlorine which principally converts gaseous HCl during combustion or gasification. To date, very few studies have examined the effect ...

Abstract Carbonation of mantle rocks during exhumation is reported in present-day oceanic settings, both at mid-ocean ridges and ocean-continent transitions (OCTs). However, the hydrothermal conditions carbonation (i.e., fluid sources, thermal regimes) remain poorly constrained. We focus on an exceptionally well-preserved fossil OCT where have been exhumed carbonated along a detachment fault fr...

Abstract Carbonation induced corrosion is one of the major durability issues for reinforced concrete structures. To address this issue, it essential to understand underlying mechanism carbonation by detecting ingress CO 2 and depth quantitatively. This paper demonstrates potential Raman spectroscopy, as a powerful technique, implement quantification analysis cement paste carbonation. In present...

It is necessary to reduce greenhouse gases in the construction industry environmental loading. Therefore, we confirmed performance of concrete using ground granulated blast-furnace slag, which expected carbon dioxide emissions. As a result, influence slag usage rate on strength development and durability could be confirmed. In addition, from results accelerated carbonation test, design set, sim...

This article reviews the progress made in CO2 separation and capture research and engineering. Various technologies, such as absorption, adsorption, and membrane separation, are thoroughly discussed. New concepts such as chemical-looping combustion and hydrate-based separation are also introduced briefly. Future directions are suggested. Sequestration methods, such as forestation, ocean fertili...