Nano-compound adsorbent for efficiently removing trace phosphorus, arsenic and antimony from water body
A nano-composite and adsorbent technology, which is applied in the direction of adsorption of water/sewage treatment, water/sewage treatment, chemical instruments and methods, etc., can solve the problems of low adsorption capacity and adsorption selectivity, weak adsorption reactivity, and obvious swelling. Achieve the effects of strong reactivity, rich nanopore structure and large adsorption capacity
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Embodiment 1
[0026] Let 2.5L of the mixed solution containing 0.3M FeCl3, 2M HCl, 1M NaCl and 150ml of the mixed solution containing 12g NaOH, 6g NaCl pass slowly through 50ml (about 40 grams) of ultra-high cross-linked polystyrene-divinylbenzene resin (cross-linked Link degree is 25%, the total volume of 1-20nm nanopores (i.e., pore volume) accounts for 95% of the total volume of all pores in the organic framework, and the surface functional groups are mainly quaternary ammonium groups), heat treatment after centrifugal dehydration to obtain the immobilization capacity of hydrated iron oxide (calculated as Fe) is 10% nanocomposite adsorbent by weight (wherein the ratio of hydrated iron oxide diameter range 0.5~18nm is higher than 99%, and its average diameter is 4nm), it is packed into the glass adsorption column with jacket In the medium (Φ32×360mm), the simulated Sb(III) slightly polluted water body (the pH of the water body is about 5, the concentration of antimony is 1ppm, and the back...
Embodiment 2
[0030]Let 2.5L of the mixed solution containing 0.3M FeCl3, 2M HCl, 1M NaCl and 150ml of the mixed solution containing 12g NaOH, 6g NaCl pass slowly through 50ml (about 40 grams) of ultra-high cross-linked polystyrene-divinylbenzene resin (cross-linked Link degree is 25%, the total volume of 1-20nm nanopores (i.e., pore volume) accounts for 95% of the total volume of all pores in the organic framework, and the surface functional groups are mainly quaternary ammonium groups), heat treatment after centrifugal dehydration to obtain the immobilization capacity of hydrated iron oxide (calculated as Fe) is 10% nanocomposite adsorbent by weight (wherein the ratio of the hydrated iron oxide diameter range of 0.5 to 18nm is higher than 99%, and its average diameter is 4nm), which is packed into a jacketed glass adsorption In the column (Φ32×360mm), the simulated Sb(III) slightly polluted water body (the pH of the water body is about 8, the concentration of antimony is 2ppm, and the back...
Embodiment 3
[0033] Let 2.5L of the mixed solution containing 0.3M FeCl3, 2M HCl, 1M NaCl and 150ml of the mixed solution containing 12g NaOH, 6g NaCl pass slowly through 50ml (about 40 grams) of ultra-high cross-linked polystyrene-divinylbenzene resin (cross-linked Link degree is 25%, the total volume of 1-20nm nanopores (i.e., pore volume) accounts for 95% of the total volume of all pores in the organic framework, and the surface functional groups are mainly quaternary ammonium groups), heat treatment after centrifugal dehydration to obtain the immobilization capacity of hydrated iron oxide (calculated as Fe) is 10% nanocomposite adsorbent by weight (wherein the ratio of hydrated iron oxide diameter range 0.5~18nm is higher than 99%, and its average diameter is 4nm), it is packed into the glass adsorption column with jacket Medium (Φ32×360mm), the simulated Sb(V) micro-polluted water body (the pH of the water body is about 5, the concentration of antimony is 1ppm, and the background ions ...
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