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Fig. 3 | Sustainable Environment Research

Fig. 3

From: Facile synthesis of reduced graphene oxide by Tecoma stans extracts for efficient removal of Ni (II) from water: batch experiments and response surface methodology

Fig. 3

Effect of rGO-X-25 on the (a) uptake capacity and (b) removal of Ni (II) within 1 h of contact time at various initial Ni (II) concentrations, rGO dose = 0.20 g L− 1, and pH = 6. (c, d) rGO-X-25 dose effect on uptake capacity and (b) Ni (II) removal at 6 mg L− 1, and pH = 6. (e) pH effect on Ni (II) removal; 2 and 6 mg L− 1 at contact time = 30 min and rGO dose = 0.20 g L− 1

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Sustainable Environment Research

ISSN: 2468-2039

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