Products Description
Nano-sized ferro silicon manganese oxide and activated carbon-loaded nano-iron manganese oxide were prepared based on the co-precipitation method. The adsorption and removal characteristics of the two materials and activated carbon on composite heavy metals were studied, and the removal effects of iron manganese oxides with different particle sizes on composite heavy metals were compared. Finally, the removal effects of the materials were investigated using actual groundwater samples. The results showed that the removal efficiency of nano-iron manganese oxide on composite heavy metals reached more than 80% under neutral conditions. However, the removal efficiency was greatly affected by the valence state of heavy metals in the water system.
Products parameters
| Brand | Mn | Si | C≤ | P≤ | S≤ | ||
| FeMn64Si27 | 60~67 | 25~28 | 0.5 | 0.10 | 0.15 | 0.25 | 0.04 |
| FeMn67Si23 | 63~70 | 22~25 | 0.7 | 0.10 | 0.15 | 0.25 | 0.04 |
| FeMn68Si22 | 65~72 | 20~23 | 1.2 | 0.10 | 0.15 | 0.25 | 0.04 |
| FeMn64Si23 | 60~67 | 20~25 | 1.2 | 0.10 | 0.15 | 0.25 | 0.04 |
| FeMn68Si18 | 65~72 | 17~22 | 1.8 | 0.10 | 0.15 | 0.25 | 0.04 |
| FeMn64Si18 | 60~67 | 17~20 | 1.8 | 0.10 | 0.15 | 0.25 | 0.04 |
| FeMn68Si16 | 65~72 | 14~17 | 2.5 | 0.10 | 0.15 | 0.25 | 0.04 |
| FeMn64Si18 | 60~67 | 14~17 | 2.5 | 0.20 | 0.25 | 0.30 | 0.05 |
Products cooperation picture
1.A new type of ferro-silicon-manganese composite oxide adsorbent was prepared by coprecipitation method, and its surface characteristics and arsenic removal performance were preliminarily studied. The zeta potential test showed that the pHzpc of the iron-manganese composite oxide was around 6.0, and SEM/EDX characterization proved that the relative molar ratio of Fe and Mn on the adsorbent surface was 3:1; the iron-manganese composite oxide showed strong adsorption capacity for both As(V) and As(III), and the adsorption speed was fast, reaching 80% of the equilibrium adsorption capacity within 60 minutes; the adsorbent had good adsorption and arsenic removal capacity within the pH range of natural water environment, and anions such as phosphate, silicate, and carbonate had different degrees of influence on the arsenic removal effect, while other coexisting anions, cations and natural organic matter had little effect on the arsenic removal effect in a neutral water environment;
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