32results about How to "Adsorption" patented technology

The invention discloses biochar capable of adsorbing heavy metals and a preparation method of the biochar, the biochar comprises shaddock peel biochar, and the biochar is prepared by the following method: cutting shaddock peel into pieces, cleaning with water to remove impurities, drying to constant weight, crushing and sieving; adding absolute ethyl alcohol and NaOH, mixing and stirring, adding aMgCl2 solution, mixing and soaking, carrying out suction filtration, washing with water until the pH value is neutral, and drying; and putting the dried shaddock peel into a tubular furnace, heatingto 300-600 DEG C in vacuum, calcining, and cooling to obtain the product. The method has the advantages of easily available raw materials, low cost, easy popularization and application, high efficiency, economy, environmental protection and the like. Through a large number of experimental screening, shaddock peel and other wastes are fully utilized, waste is turned into wealth, and the product isprepared through a preferred process. Comparison experiment screening results show that compared with unmodified biochar, the biochar obtained after the shaddock peel is modified through a specific process has a better pore structure and a better heavy metal adsorption capacity.

The invention discloses a drying agent and a preparation method thereof. The drying agent is prepared from the following components in percentage by weight: 30-40% of magnesium chloride, 7-9% of activated carbon, 45-56% of chitosan, 3-5% of pelargonium odoratissimum essential oil, 1-2% of mint essential oil, and 1-3% of lavender essential oil. The components are directly and uniformly mixed so that the drying agent can be obtained. The drying agent concurrently has the effects of moisture absorption, bacterium resistance and incensing, under the condition of the temperature being 30 DEG C and the humidity being 90%, after 15 days, the moisture absorption of the drying agent can reach 380% or above of the self weight of the drying agent, and besides, no liquid water permeates out.

The invention relates to an adsorbent used in the treatment of heavy metal sewage, and specifically provides an adsorbent used in the treatment of heavy metal-containing sewage and a preparation method thereof. Rice husk powder is used as a substrate, and 4-vinylbenzoic acid and After N-tert-butylacrylamide graft modification, the adsorption effect of rice husk powder on heavy metal ions has been greatly improved. substance, carbon nanotubes, compatibilizer, coupling agent and foaming agent, prepared a multi-component adsorbent for heavy metal-containing sewage treatment, which belongs to a foaming porous adsorbent, for Heavy metal ions in sewage have better adsorption performance, and at the same time, its recovery cost is low, the process is simple, and it is easy to operate.

The invention discloses a heavy metal ion adsorption material, which is prepared from the following components by weight: 50-60 parts of cyclodextrin-based cucurbituril-based triazine copolymer, 20 parts of hyperbranched polyethyleneimine ‑30 parts, graphene oxide 5‑10 parts. The preparation method of the heavy metal ion adsorption material comprises the following steps: adding all raw materials into a screw extruder according to the weight ratio, blending and extruding at 230°C-250°C to obtain the heavy metal ion adsorption material. The heavy metal ion adsorption material disclosed by the invention has the advantages of low cost, good adsorption effect on heavy metal ions, large adsorption capacity and easy desorption.

The invention relates to a biodegradable filling for the restoration of an alveolar bone, comprising first crosslinking type collagen fibers and supporting granules, wherein the first crosslinking type collagen fibers are prepared by reacting a crosslinking agent with non-crosslinked collagen fibers; and the supporting granules are biomedical ceramic granules, bioactive glasses or combinations ofthe biomedical ceramic granules and the bioactive glasses and distributed in the first crosslinking type collagen fibers.