Abstract: This study investigated the adsorption behaviour of two cationic
dyes, methylene blue (MB) and malachite green (MG) onto Pleurotus
ostreatus, Armillaria tabescens, and Morchella conica mushrooms. The
effects of contact time, initial dye concentration, and solution pH
(3-11) were also determined. The adsorption on all mushrooms attained
equilibrium within 120 min for both MB and MG. To evaluate the
experimental kinetics data, the pseudo-first-order,
pseudo-second-order, and intraparticle diffusion kinetics equations
were utilised. The pseudo-first-order kinetic model demonstrated a
good fit with all adsorption kinetics. The Langmuir and Freundlich
isotherm models were used to analyse the mechanism of the adsorption
isotherm. The adsorption equilibrium isotherm was in a good agreement
with the Freundlich model. Thermodynamic parameters such as ΔH
enthalpy variation, ΔS entropy variation, and ΔG free Gibbs energy
variation were calculated at 303-323 K. The results suggested that
the Pleurotus ostreatus mushroom was the most suitable adsorbent for
both cationic dyes’ removal.
Birincil Dil | İngilizce |
---|---|
Konular | Fiziksel Kimya |
Bölüm | Makaleler |
Yazarlar | |
Yayımlanma Tarihi | 15 Şubat 2020 |
Gönderilme Tarihi | 21 Haziran 2019 |
Kabul Tarihi | 23 Ocak 2020 |
Yayımlandığı Sayı | Yıl 2020 Cilt: 7 Sayı: 1 |