Adsorptive Removal of Alizarin Red S onto Sulfuric Acid-Modified Avocado Seeds: Kinetics, Equilibrium, and Thermodynamic Studies

Table 4

Comparison of CTASP’s adsorption capability with already available adsorbents.

Adsorbent	Adsorption capacity; (mg g^-1)	Reference
Single-walled carbon nanotubes (SWCNT)	312.5	Machado et al., [62]
Fe3O4@NiO, core–shell magnetic nanoparticle	223.30	Nodehi et al., [63]
Multiwalled carbon nanotubes (MWCNT)	135.2	Machado et al., [62]
Activated carbon incorporated with gold nanoparticles	123.4	Roosta and Ghaedi, [64]
Polymer resin and waste cotton fibers	104	Wanassi et al., [65]
Iron nanoadsorbents from mixed waste biomass	42.58	Gautam et al., [66]
Spirulinaplatensis biomass	17.15	Nasoudari et al., [67]
Acid-treated avocado seed powder	67.08	This study