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Table 3

Heavy metals absorption of activated and non-activated CNPs

SampleHeavy metalsTime (min)Initial concentration (ppm)Final concentration (ppm)Reduced concentration (ppm)Effectiveness (%)
Cu Activated CNPs 30 12.56 0.89 11.67 92.88 
60 12.56 1.92 10.65 84.74 
Non-activated CNPs 30 12.56 0.05 12.52 99.64 
60 12.56 0.06 12.50 99.49 
Pb Activated CNPs 30 11.18 0.22 10.97 98.07 
60 11.18 0.05 11.13 99.57 
Non-activated CNPs 30 11.18 0.21 10.97 98.08 
60 11.18 0.45 10.74 96.01 
Fe Activated CNPs 30 8.76 0.37 8.39 95.75 
60 8.76 0.11 8.65 98.70 
Non-activated CNPs 30 8.76 1.14 7.62 86.99 
60 8.76 1.02 7.74 88.33 
Zn Activated CNPs 30 4.18 1.47 2.71 64.82 
60 4.18 1.50 2.68 64.15 
Non-activated CNPs 30 4.18 1.27 2.91 69.62 
60 4.18 1.51 2.67 63.91 
SampleHeavy metalsTime (min)Initial concentration (ppm)Final concentration (ppm)Reduced concentration (ppm)Effectiveness (%)
Cu Activated CNPs 30 12.56 0.89 11.67 92.88 
60 12.56 1.92 10.65 84.74 
Non-activated CNPs 30 12.56 0.05 12.52 99.64 
60 12.56 0.06 12.50 99.49 
Pb Activated CNPs 30 11.18 0.22 10.97 98.07 
60 11.18 0.05 11.13 99.57 
Non-activated CNPs 30 11.18 0.21 10.97 98.08 
60 11.18 0.45 10.74 96.01 
Fe Activated CNPs 30 8.76 0.37 8.39 95.75 
60 8.76 0.11 8.65 98.70 
Non-activated CNPs 30 8.76 1.14 7.62 86.99 
60 8.76 1.02 7.74 88.33 
Zn Activated CNPs 30 4.18 1.47 2.71 64.82 
60 4.18 1.50 2.68 64.15 
Non-activated CNPs 30 4.18 1.27 2.91 69.62 
60 4.18 1.51 2.67 63.91 
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