MetSorb™ HMRG (Heavy Metal Removal Granules)
Highly Effective, Low-Cost Adsorbent for Reduction of Arsenic III & V
and a Wide Variety of Heavy Metals
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MetSorb HMRG and HMRP adsorbents utilize a patented material to adsorb both forms of arsenic as well as a wide range of contaminants in water. Empty bed contact times as low as 10 seconds achieve high removal efficiencies. The material affords a higher capacity and a lower level of ion interference than competitive iron and alumina based products.
MetSorb HMRG media’s adsorptive capacity is 220 grams of arsenic per kilogram of HMRG adsorbent at a pH of 7. It yields 40,000 bed volumes of capacity at an inlet concentration of 40 parts per billion (ppb) of arsenic, at 1.6 minutes of empty bed contact time (EBCT), and a breakthrough of 10 ppb.
Adsorbent Product Features/Benefits
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Removal of heavy metals to meet drinking water standards |
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High adsorbent capacity requiring less frequent replacement |
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Fast kinetics to work effectively at high flow rates |
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Nonhazardous disposal as solid waste |
Contaminants
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Arsenic III |
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Arsenic V |
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Cadmium |
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Copper |
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Antimony |
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Lead |
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Mercury |
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Uranium |
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Zinc |
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Selenium |
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| MetSorb HMRG Adsorbent Specifications |
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HMRG Granular |
| Appearance |
White beads |
| Moisture Content |
<10% |
| Bulk Density |
0.65 grams per millimeter
(40 lb/ft3) |
| Other |
Free Flowing |
| Particle |
-16+ 60 U.S. mesh
(other sizes available) |
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Applications
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Commercial and industrial treatment units for drinking water or contaminated water |
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Municipal water treatment |
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Carbon blocks |
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Cartridges for pitchers |
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Faucet mounted and counter top devices |
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Household point of entry treatment units |
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Comparison of HMRG adsorbent with
iron-based adsorbent.
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Treatment capacity as a function of tank size. |
Testing was done under the conditions specified by the NSF Standard 53 for Arsenic. Results at a pH of 6.5 and a pH of 8.5 are shown in the graph above.
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 Lead removal by MetSorb HMRG adsorbent in column test; 30 seconds EBCT. |
 Adsorption isotherms for lead between pH 5 and 7
are nearly identical. |
The above graph shows the adsorption isotherm for Arsenic V at pH 8.5 Isotherms for Arsenic III at pH 8.5, and for both forms of Arsenic at pH 4 are essentially identical.
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