This study presents the development of a novel calcium-oxide sorbent for carbon dioxide capture. In this work, CaO sorbent was impregnated with different molar percentage of titanium ethoxide. The sorbent prepared with 50 % of titanium ethoxide resulted in the best uptake characteristics for CO2. Compared to others, a higher BET surface area and a larger pore volume were observed. An excellent ...

Activated carbon is known to adsorb aqueous Hg(II). MPAC (magnetic powdered activated carbon) has the potential to remove aqueous Hg to less than 0.2 μg/L while being magnetically recoverable. Magnetic recapture allows simple sorbent separation from the waste stream while an isolated waste potentially allows for mercury recycling. MPAC Hg-removal performance is verified by mercury mass balance,...

Effective decarbonisation is key to ensuring the temperature rise does not exceed 2 °C set by Paris accords. Adsorption identified as a technology for post-combustion carbon capture. This in prominence of such processes owed fact that application solid sorbents lead generation secondary waste streams. In fact, can be produced from material (e.g. bio-based sorbents). Bio-based have become an inc...

The synthesis of methanol from biomass-derived syngas can be challenging because the high CO2 content in bio-syngas, resulting lower kinetics and higher catalyst deactivation. This work explores situ pre-treatment a CO2-rich with CO2/CO ratio equal to 1.9 through reverse-water gas shift reaction aim adjusting this more favorable one for Cu-based catalysts. Both reactions take place two catalyti...

Methods to monitor contamination of workplaces with antineoplastic drugs have been developed and validated. Cyclophosphamide (CP) was used as a model compound as it is one of the most commonly used antineoplastic drugs. A wipe sampling method to detect contamination with CP at surfaces was developed. A personal air sampling method to sample gas and vapour on solid sorbent tubes and particles wi...

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The development of energy efficient, reduced-weight, regenerable adsorption systems for removal of environmental contaminants, such as CO2 in spacecraft cabin air, chemical/biological warfare agents (CWA), and toxic industrial chemicals (TICs) is an area of continuing interest to NASA and Department of Defense, respectively. Precision Combustion, Inc. (PCI) has designed and developed a sorption...

A simple and effective method was developed using phenol formaldehyde (PF) resins to immobilize hydrous ferric oxide (HFO) onto granular activated carbon (GAC). The resulting sorbent possesses advantages for both the ferric oxide and the GAC, such as a great As-affinity of ferric oxide, large surface area of GAC, and enhanced physical strength. The studies showed that within one hour this sorbe...

Isotherms were developed at pH 6.9 for adsorption (ADS) and coprecipitation (CPT) of Cu by hydrous oxides of Fe (HFO) and Al (HAO) to study the role of sorbate/sorbent ratio in metal cation removal. For low sorbate/sorbent conditions, HFO had a higher Cu retention capacity than HAO regardless of contact methodology. For either oxide, CPT was consistently more effective than ADS in removing Cu f...

The adsorption properties of various sorbent materials were investigated to assess the factors affecting biases in the sorbent tube (ST) sampling of airborne phthalates. The recovery of phthalates was assessed critically in relation to four key sampling parameters: (1) three types of sorbent materials (quartz wool (QW), glass wool (GW), and quartz wool plus Tenax TA (QWTN)), (2) the concentrati...