Biogenic Synthesis of Magnetite Nanoparticles Using Leaf Extract of Thymus schimperi and Their Application for Monocomponent Removal of Chromium and Mercury Ions from Aqueous Solution

Table 1

Summary of parameters such as pH and contact time on percent removal efficiency and adsorption capacity of Fe₃O₄ NPs in removing Hg(II) and Cr(VI) ions from wastewater.

pH	Hg(II)		Cr(VI)		Contact time (min)	Hg(II)		Cr(VI)
	%R	q (mg/g)	%R	q (mg/g)		%R	q (mg/g)	%R	q (mg/g)
3	40	26.66	66	44.00	30	75	50.00	60	40.00
5	80	53.33	85	56.66	60	87.5	58.33	86	57.33
7	85	56.66	82	54.66	90	90	60.00	85	56.66
9	82.5	55.00	82.5	55.00	120	87.5	58.33	84	56.66
11	80	53.33	82	55.00