A5051182094- CO2 Sequestration and Geologic Interactions
- Carbon Dioxide Capture Technologies
- Methane Hydrates and Related Phenomena
- Clay minerals and soil interactions
- Zeolite Catalysis and Synthesis
- Geological and Geochemical Analysis
- Chemical Looping and Thermochemical Processes
- Geothermal Energy Systems and Applications
- Coastal and Marine Dynamics
- High-pressure geophysics and materials
- Mining and Gasification Technologies
- Metal Extraction and Bioleaching
- Mining and Resource Management
- Soil Carbon and Nitrogen Dynamics
- Geotechnical and Geomechanical Engineering
- Cerebrospinal fluid and hydrocephalus
- Mine drainage and remediation techniques
- Groundwater flow and contamination studies
- Marine and Offshore Engineering Studies
- Minerals Flotation and Separation Techniques
Enhanced weathering of (ultra)basic silicate rocks such as olivine-rich dunite has been proposed a large-scale climate engineering approach. When implemented in coastal environments, olivine is expected to increase seawater alkalinity, thus resulting additional CO2 uptake from the atmosphere. However, mechanisms marine and its effect on seawater–carbonate chemistry remain poorly understood. Here, we present results batch reaction experiments, which forsteritic was subjected rotational...
Mineral carbonation of basic silicate minerals regulates atmospheric CO2 on geological time scales by locking up carbon. Mining and spreading onto the earth's surface fast-weathering silicates, such as olivine, has been proposed to speed this natural sequestration (‘enhanced weathering’). While agriculture may offer an existing infrastructure, weathering rate impacts soil plant are largely unknown. Our objectives were assess olivine in soil, its effects growth nutrient uptake. In a pot...
In this work, we explore a novel mineral processing approach using carbon dioxide to promote alterations that lead improved extractability of nickel from olivine ((Mg,Fe)2SiO4). The precept is by altering the morphology and mineralogy ore via carbonation, comminution requirements acid consumption during hydrometallurgical can be reduced. Furthermore, carbonation pre-treatment liberation concentration metals in physically separable phases. first step, fully carbonated at high CO2 partial...
Olivine, one of the most abundant silicates on earth, thermodynamically captures CO2 in relevant amounts during its dissolution. Upscaling use this mineral as a replacement for sand or gravel may contribute to reduce concentrations greenhouse gasses atmosphere. However, reliable quantification weathering rates and prognoses effects various environmental conditions are lacking. This currently inhibits monitoring, reporting verification capture hampers exploitation carbon dioxide removal...
Enhanced weathering, in which mafic and ultramafic rocks react with CO₂ to form stable carbonates, is a promising negative emission technology for long-term carbon sequestration. A key challenge that prevents large-scale implementation of the slow rate process. In-situ study mineral weathering has led new insights on how enhance process, but equipment required carry out these experiments set high barrier entry [1]. To address this challenge, we developed microreactor made from...
Magnesium carbonate powders are essential in the manufacture of basic refractories capable withstanding extremely high temperatures and for special types cement used paper, rubber, pharmaceutical industries. A novel synthesis route is based on CO2 absorption/sequestration by minerals. This combines global challenge climate change with materials development. Carbon dioxide has fourth highest composition earth’s atmosphere next to nitrogen, oxygen argon plays a big role warming due greenhouse...
Silicon dioxide nanoparticles, also known as silica nanoparticles or nanosilica, are the basis for a great deal of biomedical and catalytic research due to their stability, low toxicity ability be functionalized with range molecules polymers. A novel synthesis route is based on CO2 absorption/sequestration in an autoclave by forsterite (Mg2SiO4), which part mineral group olivines. Therefore, it feasible safe method bind carbon carbonate compounds such magnesite forming at same time spherical...
To overcome the limitations of mineral carbonation that thus far have prevented it from becoming an acceptable route to sustainable CO2 sequestration, a novel reactor technology makes use Gravity Pressure Vessel is developed. The 'CO2 Energy Reactor' applies principles process integration and intensification achieve technological leap needed make industrially feasible. Its autothermicity, hydrostatic pressurization, vertical plug flow design underground installation appealing alternative...
To overcome the challenges of mineral CO2 sequestration, Innovation Concepts B.V. is developing a unique proprietary Gravity Pressure Vessel (GPV) reactor technology, and has focussed on generating reaction products high economic value. The GPV provides intense process conditions through hydrostatic pressurization heat exchange integration that harvests exothermic energy, thereby reducing energy demand conventional designs, in addition to offering other benefits. In this paper, perspective...
This work continues on from previous studies showing that mineral sequestration by carbonation of magnesium or calcium silicates under high pressure and temperature can be successfully carried out processing in an autoclave. The paper is focused the influence experimental parameters avoiding scale formation during pre-treatment autoclave a subsequent leaching. Amorphous silica magnesite, respectively, were main reaction products olivine conditions In addition, examined peridotites may...