Biosorption of Zinc from Aqueous Solution Using Chemically Treated Rice Husk

Table 3

Adsorption of Zn²⁺ from the literature by various adsorbents.

Adsorbents	Adsorption capacity (mg/g)	Reference
Activated carbon obtained from agricultural by-products	6.65	Ferro-García et al. [18]
Oxidised jute	8.02	Shukla and Pai [19]
Neem bark	13.29	Bhattacharya et al. [20]
Black gram husk	13.45	Saeed et al. [9]
Clarified sludge	15.53	Bhattacharya et al. [20]
NaOH-treated rice husk	20.08	This study