The use of pomegranate seed activated by mechanochemical process as a novel adsorbent for the removal of anionic dyestuffs: response surface method approach

Ozturk A., Cetintas S., BİNGÖL D.

CHEMICAL ENGINEERING COMMUNICATIONS, cilt.208, sa.9, ss.1279-1300, 2021 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 208 Sayı: 9
  • Basım Tarihi: 2021
  • Doi Numarası: 10.1080/00986445.2020.1771321
  • Dergi Adı: CHEMICAL ENGINEERING COMMUNICATIONS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Aqualine, Chemical Abstracts Core, Chimica, Communication Abstracts, Compendex, INSPEC, Metadex, Pollution Abstracts, Civil Engineering Abstracts
  • Sayfa Sayıları: ss.1279-1300
  • Anahtar Kelimeler: Adsorption, congo red, mechanical activation, pomegranate seed, remazol brillant blue R, response surface methodology, REMAZOL BRILLIANT BLUE, CONGO RED ADSORPTION, REACTIVE BLACK 5, AQUEOUS-SOLUTION, WASTE-WATER, DYE ADSORPTION, OPTIMIZATION, CARBON, EQUILIBRIUM, KINETICS
  • Kocaeli Üniversitesi Adresli: Evet

Özet

This study aims to reveal the potential of using pomegranate seed (PS) as an alternative, new and cost-effective adsorbent for the removal of anionic dyestuffs such as Congo Red (CR) and Remazol Brillant Blue R (RBBR) from aqueous solutions. In addition, the PS was activated by a high-energy planetary ball milling. It was seen that the activated PS (APS) has a higher adsorption capacity and mechanical activation has a positive effect on the adsorption process. The effects of experimental factors were evaluated using both conventional univariate methods and multivariate methods such as response surface methodology (RSM) approach. The effects of experimental factors and possible interactions on both dyestuff removal and adsorption capacity were expressed in mathematical equations. The removal efficiencies over 90% were achieved for both dyestuffs at optimum conditions determined by central composite design (CCD). As a result of isothermic, kinetic, and thermodynamic evaluations, the nature of adsorption was best explained by the Temkin isotherm model and the adsorption mechanism was defined as a chemically controlled, exothermic, and spontaneous reaction. The functional groups and the morphological properties of the adsorbent were determined by Fourier transform infrared spectrophotometry (FTIR) and scanning electron microscopy (SEM) in order to explain the possible interactions between adsorbent and adsorbent molecules.