Table 3.

Comparison of Langmuir sorption capacity $(\text{mg}/\text{g})$ for the adsorption of CV onto rice husk.

Sorbents	${\mathit{q}}_{\mathbf{m}}$ (mg/g)	References
Charred Rice Husks (CRH) Xanthated Rice husks (XRH)	62.85 90.02	our work
Rice husk ash	125.43	[10]
Sulfuric acid-activated rice husk carbon (RHS) Zinc chloride activated rice husk carbon (RHZ)	64.875 61.575	[11]
Nascent Rice Husk	24.4781	[12]
Crosslinked poly tartaric acid-treated rice husk ash	93.45	[21]
Rice Husk Biochar-Based Magnetic Nanocomposite	185.6	[22]
Rice Husk ash (RHA) Carbon embedded silica from rice husk (CES) Carbon embedded zeolite from rice husk (Z-RHA)	8.3 18.78 19.28	[26]
Activated Carbon of Lemon Wood (ACL)and Activated Carbon/Fe3O4	23.6 35.64	[41]