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Table 6 A comparison on removal of MG, RhB and CR by different adsorbents

From: Simultaneous elimination of Malachite Green, Rhodamine B and Cresol Red from aqueous sample with Sistan sand, optimized by Taguchi L16 and Plackett–Burman experiment design methods

No Adsorbent Adsorbate qe (mg g−1) References
1 Sahara desert sand Methylene Blue 11.98 [47]
2 Feldspar Methylene Blue 0.66 [48]
3 Bentonite MG 7.72 [49]
4 3A zeolite RhB 0.74 [23]
5 Zeolite MCM-22 RhB 1.11 [50]
6 Beach sand coated with polyaniline Methylene Blue 9.10 [51]
7 Gypsum Methylene Blue 36.00 [52]
8 functionalized multi walled carbon nanotubes MG 114.11 [53]
9 Albizzia lebbeck seed activated carbon CR 5.154 [54]
10 magnetic Fe3O4/C core–shell nanoparticles CR 11.22 [55]
11 Sistan sand Simultaneous removal of MG, RhB and CR 0.36 This study