Some aspects of the present disclosure relate to a method comprising obtaining a sorbent polymer composite material, contacting the sorbent polymer composite material with mercury vapor to form a used sorbent polymer composite material; wherein the used sorbent polymer composite material comprises oxidized mercury and wherein the used sorbent polymer composite material emits oxidized mercury vapor; and contacting the used sorbent polymer composite material with a halogen source, so as to result in a treated sorbent polymer composite material. In some embodiments, the treated sorbent polymer composite material emits less than 0.01 μg oxidized mercury vapor per minute per gram of the treated sorbent polymer composite, compared to a used sorbent polymer composite, when measured at 65° C. in air having a relative humidity of 95%.

The present invention is directed to the removal of mercury from a gas phase by injecting a scavenger solution into the gas phase.

The present invention relates an alkanolamine/amine-grafted metal-organic framework-based carbon dioxide adsorbent and, more specifically, to an alkanolamine/amine-grafted metal-organic framework-based carbon dioxide adsorbent that can effectively reduce renewable energy generated in the process of adsorption and desorption of carbon dioxide, and maintain structural stability against moisture present in exhaust gas, thereby being capable of effectively capturing carbon dioxide in an actual fluidized bed. According to the present invention, it is possible to provide a carbon dioxide adsorbent capable of maintaining structural stability against changes in adsorption/desorption temperatures and moisture.

The present invention relates an alkanolamine/amine-grafted metal-organic framework-based carbon dioxide adsorbent and, more specifically, to an alkanolamine/amine-grafted metal-organic framework-based carbon dioxide adsorbent that can effectively reduce renewable energy generated in the process of adsorption and desorption of carbon dioxide, and maintain structural stability against moisture present in exhaust gas, thereby being capable of effectively capturing carbon dioxide in an actual fluidized bed. According to the present invention, it is possible to provide a carbon dioxide adsorbent capable of maintaining structural stability against changes in adsorption/desorption temperatures and moisture.

The present disclose is directed to a method for controlling iodine levels in wet scrubbers, and, in particular, recirculating wet scrubbers by removing the iodine from the scrubbing solution, such as by using ion exchange, absorption, adsorption, precipitation, filtration, solvent extraction, ion pair extraction, and an aqueous two-phase extraction.

The present disclose is directed to a method for controlling iodine levels in wet scrubbers, and, in particular, recirculating wet scrubbers by removing the iodine from the scrubbing solution, such as by using ion exchange, absorption, adsorption, precipitation, filtration, solvent extraction, ion pair extraction, and an aqueous two-phase extraction.

The present disclosure is directed to the use of elemental or speciated iodine and bromine to control total mercury emissions.

The present disclosure is directed to the use of elemental or speciated iodine and bromine to control total mercury emissions.

A capture mass for heavy metals, in particular mercury, contained in a gaseous or liquid feed, said mass comprising: copper which is present at least in part in the sulphide form, Cu.sub.xS.sub.y, a porous support based on alumina; characterized in that said porous support has a total pore volume (TPV) in the range 0.8 to 1.5 cm.sup.3/g, a mesopore volume (V.sub.6 nm-100 nm) in the range 0.5 to 1.3 cm.sup.3/g, and a macropore volume (V.sub.100 nm) in the range 0.33 to 0.45 cm.sup.3/g, it being understood that the ratio between the mesopore volume and the macropore volume (V.sub.6 nm-100 nm/V.sub.100 nm) is in the range 1 to 5.

In one aspect, systems and methods for the efficient and cost-effective removal of bromide from wastewater streams are described herein. Briefly, a system for bromide removal comprises pretreatment apparatus operable for at least partial removal of background ionic species from the wastewater stream and/or dilution of the background ionic species in the wastewater stream. The system also comprises bromide capture apparatus operable for removal of bromide from the pretreated wastewater stream, wherein the system removes bromide from the wastewater stream at an efficiency of at least 80 percent. In some embodiments, bromide is recovered from the capture apparatus and reused in flue gas treatment applications.