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Table 6 Iron removal efficiency and nitrite removal efficiency of the ceramic filters

From: Evaluation of the efficiency of ceramic filters for water treatment in Kambata Tabaro zone, southern Ethiopia

Filter code Concentration before filtration Fe+ and No2 (ppm) Concentration after filtration Fe+ and No2 (ppm) Percent removal efficiency (%)
Fe+ No2 Fe+ No2 Fe+ No2
1 1.5 0.068 1.2 0.06 20 11.8
2 1.5 0.068 0.9 0.04 40 41.2
3 1.5 0.068 0.32 0.039 78.7 42.6
4 1.5 0.068 1.15 0.052 23.3 23.5
5 1.5 0.068 0.82 0.031 45.3 54.4
6 1.5 0.068 0.82 0.025 45.3 63.2
7 1.5 0.068 0.29 0.041 80.7 39.7
8 1.5 0.068 0.61 0.021 59.3 69.1
9 1.5 0.068 0.25 0.02 83.3 70.6