Effectiveness of Alkali-Acid Treatment in Enhancement the Adsorption Capacity for Rice Straw: The Removal of Methylene Blue Dye

Table 3

Comparison of maximum monolayer capacity (𝑄_𝑚, mg/g) of MB adsorbed by various adsorbents.

Adsorbents	𝑄𝑚, (mg/g)	Reference
Citric acid modified rice straw	270.30	[16]
EDTA-modified rice husk	46.30	[40]
Sulfuric acid treated Pearl millet husk	82.37	[41]
Pineapple stem	119.05	[42]
Sulfuric acid treated Parthenium	88.29	[43]
Rice husk	40.60	[44]
Citric acid modified kenaf core fibers	131.60	[45]
Activated carbon from apricot	136.98	[46]
Oak sawdust	29.94	[47]
Cherry sawdust	39.84	[47]
Hazelnut	76.90	[47]
Rice straw	32.60	This study
Citric and/or EDTA-modified alkali rice straw	62.90–135.10	This study