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The variation of adsorption capacities of Fe-Bent for As, B, Cr, Mo and Se at optimized conditions is presented in Table 2.

Table 2

Adsorption capacities (mg g–1) of Fe3+ modified bentonite clay for oxyanions of As, B, Cr, Mo and Se

Adsorption capacity (mg g–1)
 Iron modified bentonite clay
Concentration (mg L–1)AsBCrMoSe
0.1 0.002 0.002 0.002 0.002 0.002 
0.5 0.012 0.012 0.012 0.012 0.012 
0.025 0.025 0.025 0.025 0.025 
0.074 0.075 0.075 0.074 0.075 
0.149 0.149 0.150 0.149 0.149 
10 0.247 0.247 0.249 0.248 0.249 
15 0.370 0.370 0.373 0.373 0.373 
Adsorption capacity (mg g–1)
 Iron modified bentonite clay
Concentration (mg L–1)AsBCrMoSe
0.1 0.002 0.002 0.002 0.002 0.002 
0.5 0.012 0.012 0.012 0.012 0.012 
0.025 0.025 0.025 0.025 0.025 
0.074 0.075 0.075 0.074 0.075 
0.149 0.149 0.150 0.149 0.149 
10 0.247 0.247 0.249 0.248 0.249 
15 0.370 0.370 0.373 0.373 0.373 

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