The problem of the present invention is to provide an exhaust gas purifying agent for automobiles which is capable of improving the automobile fuel mileage as well as purifying the exhaust gas of the automobiles, and further extending the effective duration of the exhaust gas purifying agent for automobiles by a simple method of spraying the exhaust gas purifying agent for automobiles using only natural ingredients on the air filter.

The problem of the present invention can be solved by using a liquid containing a) tourmaline fine powder, b) porous material fine powder, c) fucoidan extracted from seaweeds, d) amino peptides and/or alginic acids extracted from seaweeds in water as the exhaust as purifying agent for automobiles by spraying on the air filter of automobiles.

A flue gas desulfurization (FGD) system in which a buffering additive feed directly adds a buffering additive containing acetic acid to either the FGD sump or a stream of the system that is downstream of the sump. In a method for performing flue gas desulfurization, the buffering additive, containing acetic acid, is added to either the sump or the overflow. That is, the buffering additive is added to the FGD system separately from the alkaline feed slurry, which contains lime or limestone.

The present invention relates to the field of air cleaning, and specifically discloses an air freshener composition. The air freshener composition comprises component A and component B, wherein a weight ratio of the component A to the component B is 1:0.5-3; the component A comprises, in parts by weight, 10-30 parts by weight of an active agent; 6-15 parts by weight of a carrier; 1-4 parts by weight of a pH regulator; and 0.01-0.2 part by weight of an antioxidant; the component B is a plant extract solution, wherein the plant extract solution comprises at least, in parts by weight: 5-30 parts by weight of an extract of a mixture of Populus nigra var. italica, grapefruit peels and eucalyptus leaves; 0.1-5 parts by weight of Sophora flavescens extract; 1-3 parts by weight of Aloe vera extract; 1-10 parts by weight of fresh orange peel extract; 0.5-3 parts by weight of Nandina domestica extract; 0.5-10 parts by weight of Eucalyptus robusta Smith extract; 1-8 parts by weight of Robinia pseudoacacia L. extract; 1-5 parts by weight of Chrysanthemum morifolium extract; and 0.1-2 parts by weight of artemisinin.

An apparatus for removing air pollutants from the air is described. The apparatus contains a fan module and a chamber that can hold either activated carbon or a gel that reacts with air pollutants from air.

Disclosed are methods and systems for removing submicron particles from a gas stream, in particular from urea prilling off-gas, wherein a Venturi ejector is used. A method comprises contacting a gas stream containing submicron particles in a Venturi ejector with an injected high velocity scrubbing liquid to provide a pumping action, wherein the scrubbing liquid has an initial velocity of at least 25 m/s and wherein the ratio of scrubbing liquid and gas flow is between 0.0005 and 0.0015 (m.sup.3/h)/(m.sup.3/h).

A treatment process for remediating H.sub.2S and other contaminants in liquids includes: partially filling a closed vessel with a contaminated liquid containing 5 ppm H.sub.2S with a head space above the liquid within the vessel where gasses released from the liquid from the liquid collect; separately providing a treatment composition in the head space so that the gasses from the liquid may contact the treatment composition; and permitting the contact between the vapors from the liquid and the treatment composition to continue until a collective concentration of H.sub.2S in the liquid and in the head space is <5 ppm. The treatment composition includes an aqueous solution containing at least one hydroxide compound, a collective concentration of the at least one hydroxide compound in the aqueous solution is in a range of 35-55 weight %, and the aqueous solution constitutes at least 80 weight % of the treatment composition.

Disclosed are methods and systems for removing submicron particles from a gas stream, in particular from urea prilling off-gas, wherein a Venturi ejector is used. A method comprises contacting a gas stream containing submicron particles in a Venturi ejector with an injected high velocity scrubbing liquid to provide a pumping action, wherein the scrubbing liquid has an initial velocity of at least 25 m/s and wherein the ratio of scrubbing liquid and gas flow is between 0.0005 and 0.0015 (m.sup.3/h)/(m.sup.3/h).

The invention provides a method for the capture of at least one acid gas in a composition, the release of said gas from said composition and the subsequent regeneration of said composition for re-use. The method comprises the step of capturing an acid gas by contacting said acid gas with a capture composition comprising at least one salt of a carboxylic acid dissolved in a solvent system consisting substantially of water.

A carbonized material, a device for removing ozone, and a method for removing ozone are provided. The carbonized material has at least a carbonyl-containing group, alkylol group, and carbon having sp.sup.2 hybrid orbital. In particular, the at least one carbonyl-containing group has a carbon content from 10 atom % to 30 atom %, based on the total carbon atoms of the at least one carbonyl-containing group, the at least one alkylol group, and the at least one carbon having sp.sup.2 hybrid orbital.

A flue gas desulfurization (FGD) system in which a buffering additive feed directly adds a buffering additive containing acetic acid to either the FGD sump or a stream of the system that is downstream of the sump. In a method for performing flue gas desulfurization, the buffering additive, containing acetic acid, is added to either the sump or the overflow. That is, the buffering additive is added to the FGD system separately from the alkaline feed slurry, which contains lime or limestone.