Sample [Ni]mgL-1(mean ± s.d.) Ep% (mean ± s.d.)
RE 1,137.25 -
TEpH8.5 130.7 ± 22.5 87.52 ± 1.38
TEpH10 5.86 ± 2.2 99.48 ± 0.19
REA 1,024.7 -
TEApH8.5 90.64 ± 51.68 91.16 ± 5.04
TEApH10 3.78 ± 4.66 99.63 ± 0.45
Table 2: Variations in the nickel concentration and percentual removal after physical-chemical treatment (atomic absorption spectrophotometry).