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Table 1

Isotherm parameters of NH3-N uptake on the Zn(II)-loaded resin

IsothermAdsorbentQm(mg g−1)KL(L mg−1)R2
Langmuir Zn(II)-loaded resin 298 K 38.55 0.0012 0.995 
Zn(II)-loaded resin 313 K 33.66 0.0013 0.992 
Zn(II)-loaded resin 333 K 24.98 0.0012 0.986 
Natural zeolite (Saltalı et al. 2007) 9.64   
Natural Turkish clinoptilolite (Karadag et al. 2006) 8.121   
Clinoptilolite (Zhu & Ni 2009) 15.44   
Sardinian natural zeolites (Cincotti et al. 2001) 8.15(raw) 12.26 (Na-zeolite)   
IsothermAdsorbentKFnR2
Freundlich Zn(II)-loaded resin 298 K 0.7262 2.15 0.945 
Zn(II)-loaded resin 313 K 0.7560 2.24 0.943 
Zn(II)-loaded resin 333 K 0.4612 2.136 0.924 
IsothermAdsorbentKT (L mg−1)BR2
Temkin Zn(II)-loaded resin 298 K 0.0169 7.46 0.978 
Zn(II)-loaded resin 313 K 0.0184 6.55 0.981 
Zn(II)-loaded resin 333 K 0.0156 5.11 0.979 
IsothermAdsorbentQm(mg g−1)KL(L mg−1)R2
Langmuir Zn(II)-loaded resin 298 K 38.55 0.0012 0.995 
Zn(II)-loaded resin 313 K 33.66 0.0013 0.992 
Zn(II)-loaded resin 333 K 24.98 0.0012 0.986 
Natural zeolite (Saltalı et al. 2007) 9.64   
Natural Turkish clinoptilolite (Karadag et al. 2006) 8.121   
Clinoptilolite (Zhu & Ni 2009) 15.44   
Sardinian natural zeolites (Cincotti et al. 2001) 8.15(raw) 12.26 (Na-zeolite)   
IsothermAdsorbentKFnR2
Freundlich Zn(II)-loaded resin 298 K 0.7262 2.15 0.945 
Zn(II)-loaded resin 313 K 0.7560 2.24 0.943 
Zn(II)-loaded resin 333 K 0.4612 2.136 0.924 
IsothermAdsorbentKT (L mg−1)BR2
Temkin Zn(II)-loaded resin 298 K 0.0169 7.46 0.978 
Zn(II)-loaded resin 313 K 0.0184 6.55 0.981 
Zn(II)-loaded resin 333 K 0.0156 5.11 0.979 
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