Research Article

Tartaric Acid-Modified Holarrhena antidysenterica and Citrullus colocynthis Biowaste for Efficient Eradication of Crystal Violet Dye from Water

Table 3

Thermodynamic parameters for CV dye adsorption.

AdsorbentsT (K)G (KJ/mol)KDH (KJ/mol)S (J/mol K)

HA untreated283−4.8287.782−63.5057262.8423
293−5.78810.758
303−6.78314.767
313−8.39625.179
323−8.96131.267

Acid treated283−4.7967.676−67.3621276.0735
293−6.01911.826
303−6.47213.047
313−8.46225.818
323−9.61535.875

CC untreated283−3.2613.997−64.1031254.0534
293−4.9177.523
303−5.6419.3813
313−6.23510.976
323−8.13320.654

Acid treated283−4.8937.999−72.8767294.5128
293−5.3358.933
303−7.28317.998
313−7.99521.582
323−10.0241.745