摘要:
Adsorbents and methods for removing cations of heavy metals from a medium are provided. The adsorbents comprise a porous media in which at least one oxygen-containing compound of iron, copper, aluminum, zirconium, titanium and combinations thereof is incorporated. The oxygen-containing compound may be incorporated into the porous media by impregnation or dispersion of a suitable precursor of such a compound. The precursor may be further treated to yield the oxygen-containing compound. Such adsorbents are particularly useful for removing lead and/or other metal cations from the environment and may be used in treating drinking water sources.
摘要:
A method is presented for removing heavy metal anions from a fluid or gas medium containing metal anions. The method includes providing an adsorbent having deposited therein at least one oxygen-containing compound of at least one metal selected from the group consisting of iron, copper, and aluminum; and contacting a portion of the medium with the adsorbent. The oxygen-containing compound may be incorporated into the carbon by impregnation or dispersion of a suitable precursor of such a compound. The precursor may be further treated to yield the oxygen-containing compound. Such adsorbents are particularly useful for removing arsenic and/or selenium from the environment and may be used in treating drinking water sources.
摘要:
A method and recyclable magnetic adsorbent are provided for removing contaminants from a fluid stream that has by-products. The method includes providing an adsorbent material that has incorporated at least one ferromagnetic material. Contacting the ferromagnetic adsorbent material to at least a portion of contaminated stream to adsorb the contaminant. The contaminated adsorbent is then separated from the by-products using a magnetic separation process. The adsorbent is recovered from the solid by-products and reusable in the present method.
摘要:
Adsorbents for removing anions of a heavy metals and methods for using same are provided. Metal removing adsorbents comprise a porous material in which at least one oxygen-containing compound of iron, copper, aluminum, titanium, and/or zirconium is incorporated. The oxygen-containing compound may be incorporated into the porous media by impregnation or dispersion of a suitable precursor of such a compound. The precursor may be further treated to yield the oxygen-containing compound. Such adsorbents are particularly useful for removing arsenic and/or selenium from the environment and may be used in treating drinking water sources.
摘要:
A method for making adsorbents for removing anions of a heavy metals is provided. In an example the method includes impregnating an adsorbent material with a solution comprising at least one compound of at least one metal selected from the group consisting of iron (II), aluminum, titanium, zirconium, and combinations thereof; and converting the compound into an oxygen-containing compound of said metal to produce said adsorbent capable of interacting with anions of the heavy metal. Such adsorbents are particularly useful for removing arsenic and/or selenium from the environment and may be used in treating drinking water sources.