DATA (CONT.) AND DISCUSSION
Reduction of metals per area of media (by weight)
Influent conc. mg/liter
mg/gram media
mg/ft2 media
2.5” x 5” filter
2.5” x 10” filter
0.41
3.74
108.33
162.49
324.99
Arsenic
0.42
3.69
107.07
160.60
321.21
Barium
0.40
3.63
105.18
157.77
315.53
Cadmium
0.43
4.62
133.84
200.76
401.52
Chromium VI
0.15
1.62
47.10
70.65
141.30
Copper
0.39
4.13
119.78
179.67
359.35
Iron
0.43
4.67
135.42
203.13
406.25
Lead
0.41
4.37
126.72
190.08
380.15
Selenium
0.40
3.69
106.96
160.45
320.89
Silver
3.44
34.15
990.40
1485.60
2971.20
Total
Discussion Chromium VI, copper, iron, lead and seleniumwere all significantly reduced when filtered through both Force Field TM Filter grades (Table 1). In fact, the chromium VI, copper, iron and lead were analyzed for but not detected during analysis. The percent reduction values were calculated using the detection limit as the effluent concentration. It is possible that the reduction percentage values for these metals were even higher than reported here (Figure 1, 2). The Force Field TM Filter media was only able to reduce arsenic, barium, cadmium, and silver by less than 20% at the terminal sample point. The testing was concluded at 15 Liters due to increased pressure within the system, which surpassed 20 psi. This pressure increase was likely due to plugging of the filter from retention of the metals in the spike solution. There was a total of 3.44mg/L of metals being filtered through the media for 15 Liters or a total of 51mg of metals. Each sample was approximately 1.38 grams. Table 2 shows and estimation of the reduction of each metal that would be expected by the media in terms of the area by weight. NOTE: For the metals that were removed significantly, the total volume filtered could have been higher had the material not been plugging. It is unclear if plugging was due to all of the metals or if only certain ones were causing the plugging. It is possible that the total volume filtered and/or milligrams removed could be greater, for the successfully reduced metals, if each metal were filtered individually. However this would be neither time nor cost effective to carry out.
THE CLEAR CHOICE FOR WATER PURIFICATION ANYWHERE ON EARTH.
WWW.TRIPLECLEAR.COM
SALES@TRIPLECLEAR.COM
Made with FlippingBook - professional solution for displaying marketing and sales documents online