Use of Nanostructured Layered Double Hydroxides as Nanofilters in the Removal of Fe²⁺ and Ca²⁺ Ions from Oil Wells

Table 1

Results of the adsorption study of Fe²⁺.

LDHs	Actual amount, (ppm)	Eluded amount, (ppm)	Absorbed amount, (ppm)	Degree of surface coverage, θ	Distribution partition coefficient,	Absorption efficiency (%)
1	9.8526	0.1247	9.7279	0.99	1.01	98.73
2	9.8526	0.0222	9.8304	1.00	1.00	99.77
3	9.8526	8.0994	1.7532	0.18	5.62	17.79
4	9.8526	7.1938	2.6588	0.27	3.71	26.99