A filter is disclosed. The filter of the present disclosure includes: a support layer; and a filter layer coupled to the support layer, wherein the filter layer is formed by a melt blown method with, as a melt, a thermoplastic resin-including first base and a first antibacterial agent, wherein the first antibacterial agent includes an antibacterial metal or antibacterial metal oxide.

A composite comprising a hydroxyapatite and at least one additive which is present during hydroxyapatite synthesis. The additive may be embedded or incorporated into or coated onto the hydroxyapatite. The additive preferably increases the hydroxyapatite porosity, e.g., providing a higher pore volume and/or BET surface area than a hydroxyapatite material without additive. The additive preferably comprises an activated carbon, chitosan, hopcalite, clays, zeolites, sulfur, and/or a metal such as Al, Sn, Ti, Fe, Cu, Zn, Ni, Cu, Zr, La, Ce, in the form of metal, salt, oxide, oxyhydroxide, and/or hydroxide. The hydroxyapatite may be calcium-deficient. The composite is in the form of particles having a D50 of at least 20 μm, a BET surface area of at least 120 m.sup.2/g; and/or a total pore volume of at least 0.3 cm.sup.3/g. An adsorbent material comprising a composite or a blend of composite with a hydroxyapatite without additive, and its use for removal of contaminants such as Hg, Se, As, and/or B from an effluent.

Provided is a stretchable film having excellent stretchability, excellent air permeability, and an excellent deodorizing property. Also provided is an article including such stretchable film. A stretchable film of the present invention is a film having stretchability, and includes a deodorant. The stretchable film of the present invention is a film having stretchability, and has a deodorization efficiency for each of ammonia and hydrogen sulfide 3 hours after the start of a deodorization test, the deodorization efficiency being measured by a detector tube method, of 10% or more.

Provided is a stretchable film having excellent stretchability, excellent air permeability, and an excellent deodorizing property. Also provided is an article including such stretchable film. A stretchable film of the present invention is a film having stretchability, and includes a deodorant. The stretchable film of the present invention is a film having stretchability, and has a deodorization efficiency for each of ammonia and hydrogen sulfide 3 hours after the start of a deodorization test, the deodorization efficiency being measured by a detector tube method, of 10% or more.

An adsorption structure unit prevents water leakage from an adsorption structure and improves the durability of the adsorption structure and the durability of the adsorption structure unit. An adsorption structure has a filter portion having a plurality of flow paths divided by a plurality of partition walls and a plugged portion shutting a feed water inflow or outflow end of the plurality of flow paths, a water-impermeable outer tube accommodating the filter portion, and a seal material blocking a gap between the filter portion and the outer tube in at least one end portion of the filter portion. An adsorption structure unit has the adsorption structure, a housing supplying feed water from one end of the adsorption structure, and discharging the feed water from the other end, and a ring member disposed between end portions on both sides of the outer tube and an inner surface of the housing.

The present invention relates to a preparation method of La(OH).sub.3 nanorod/walnut shell biochar composite material (LN-WB), comprising the following steps: putting walnut shell powder into a crucible and pyrolyzing and carbonizing in a muffle furnace at 350° C. to 450° C.; after the pyrolysis is completed, grinding and sieving the obtained biochar, and then repeatedly washing with deionized water; drying the washed biochar for later use; putting an appropriate amount of biochar into the deionized water to form a turbid solution; simultaneously dropwise adding LaCl.sub.3 and NaOH to the above turbid solution by using a peristaltic pump; and allowing the obtained mixture to stand at room temperature for 20 to 30 h, washing and drying for later use. The present invention successfully prepares a La(OH).sub.3 nanoparticle-loaded biochar composite material through a simple synthesis technology.

A magnetic soil remediation agent for soil heavy metal pollution and a preparation method and application thereof are provided. The magnetic soil remediation agent is prepared by using remediation agent framework material and magnetic core material as raw materials, and heavy metal collector as modifier; said framework material is silicon dioxide activated by strong alkali; said magnetic core material comprises magnetic materials Fe.sub.3O.sub.4 and γ-Fe.sub.2O.sub.3; said modifier comprises ethylenediaminetetraacetic acid (EDTA), nitrilotriacetic acid trisodium salt (NTA), (S,S)-ethylenediamine-N,N-disuccinic acid trisodium salt (EDDS) and mercaptoethylamine. The remediation agent of the present invention can effectively passivate the heavy metals in the soil, reduce their available contents, and inhibit the absorption of heavy metals by plants.

A magnetic soil remediation agent for soil heavy metal pollution and a preparation method and application thereof are provided. The magnetic soil remediation agent is prepared by using remediation agent framework material and magnetic core material as raw materials, and heavy metal collector as modifier; said framework material is silicon dioxide activated by strong alkali; said magnetic core material comprises magnetic materials Fe.sub.3O.sub.4 and γ-Fe.sub.2O.sub.3; said modifier comprises ethylenediaminetetraacetic acid (EDTA), nitrilotriacetic acid trisodium salt (NTA), (S,S)-ethylenediamine-N,N-disuccinic acid trisodium salt (EDDS) and mercaptoethylamine. The remediation agent of the present invention can effectively passivate the heavy metals in the soil, reduce their available contents, and inhibit the absorption of heavy metals by plants.

A method of removing one or more antibiotics from a dairy product, the method involve passing the dairy product comprising an antibiotic in a first amount through a bulk comprising, relative to a total bulk weight, at least 75 wt. % of titanium oxide nanostructures, to provide the dairy product comprising the antibiotic in a second, lesser amount, wherein the nanostructures have lengths at least two-fold in excess of their width and height. Bulk materials useful in this or related methods or applications may have loosely tangled, noodle-like morphologies on sub-100 nm scale, and need not employ graphene and/or polymeric support networks in columns, generally having only titanium oxides without silicon or iron oxides.

A composite film framework that includes a support; a metal oxide layer on the support; and a metal organic framework film on the metal oxide layer 2, wherein a metal atom is shared by a metal oxide in the metal oxide layer and a metal organic framework in the metal organic framework film at an interface between the metal oxide layer and the metal organic framework film.