A list of non-hydrogel and hydrogel adsorbents for diclofenac removal.

Entry	Adsorbents	Q max (mg g−1)	Reference
Non-hydrogel adsorbents
1	CNT/HNO3	24	44
2	CNT/Al2O3	27	45
3	AC from agricultural by-products	56	46
4	Grape bagasse	77	47
5	AC from cocoa shell	63	48
6	AC from Terminalia catappa	91	49
7	AC from olive stones	11	50
8	rGO	59.67	51
9	Mercapto-functionalized hexagonal mesoporous silicate	80	52
10	Commercial AC	76	53
11	CTAB-ZIF-67	54.31	54
Hydrogel adsorbents
1	GO–CTS	1.96	55
2	Tunable CTS (with GO)	1.94	56
3	Reduced graphene oxide	96	57
4	Poly(methyl acrylic acid)/montmorillonite	63	58
5	Present work	146.31	—