摘要:
An oral chewable tobacco product includes a gum composition in an amount of about 30% to about 70% by weight based on the weight of the oral chewable tobacco product and tobacco powder in an amount of about 30% to about 70% by weight based on the weight of the oral chewable tobacco product. The gum composition includes at least one environmentally biodegradable polymer in an amount of about 20% to about 95% by weight based on the weight of the gum composition and at least one softener in an amount of about 5% to about 80% by weight based on the weight of the gum composition.
摘要:
An oral chewable tobacco product includes a gum composition in an amount of about 30% to about 70% by weight based on the weight of the oral chewable tobacco product and tobacco powder in an amount of about 30% to about 70% by weight based on the weight of the oral chewable tobacco product. The gum composition includes at least one environmentally biodegradable polymer in an amount of about 20% to about 95% by weight based on the weight of the gum composition and at least one softener in an amount of about 5% to about 80% by weight based on the weight of the gum composition.
摘要:
Disclosed is a method for removing one or more heavy metals from an aqueous plant extract, comprising: contacting the aqueous plant extract with, and sorbing at least a portion of the one or more heavy metals on, at least one sorbent selected from the group consisting of: one or more surface activated titanium oxide particles, one or more chitosans, one or more calcium phosphates, one or more mercaptoalkyl-substituted silica gels, one or more mercaptoalkyl-substituted mesoporous molecular sieves, one or more finely ground γ-aluminas, one or more photocatalytic titanium dioxide particles, one or more Au-anatases, ceria, and combinations thereof, to form a mixture of sorbent and heavy metal-depleted aqueous plant extract; and separating the sorbent from the mixture to provide a heavy metal-depleted aqueous plant extract.
摘要:
Catalysts for the conversion, or oxidation, of carbon monoxide to carbon dioxide. Cigarettes with filters containing the catalysts have acceptable resistance to draw. Additionally, the catalysts can be used to reduce the concentration of carbon monoxide from a vehicle exhaust emission, a gas used in a CO2 laser, a gas used in a fuel cell and/or ambient air undergoing air filtration.
摘要:
According to one embodiment, described herein is an exhaust gas after-treatment system that is coupleable in exhaust gas stream receiving communication with an internal combustion engine. The exhaust gas after-treatment system includes a low temperature SCR catalyst configured to reduce NOx in exhaust gas having a temperature below a temperature threshold. The system also includes a normal-to-high temperature SCR catalyst configured to reduce NOx in exhaust gas having a temperature above the temperature threshold.
摘要:
According to one embodiment, described herein is an exhaust gas after-treatment system that is coupleable in exhaust gas stream receiving communication with an internal combustion engine. The exhaust gas after-treatment system includes a low temperature SCR catalyst configured to reduce NOx in exhaust gas having a temperature below a temperature threshold. The system also includes a normal-to-high temperature SCR catalyst configured to reduce NOx in exhaust gas having a temperature above the temperature threshold.