Adsorption of Diazo Dye from Aqueous Solutions by Magnetic Montmorillonite Composite

Tunali Akar S., Ozdemir I., Sayın F., Akar T.

Clean - Soil, Air, Water, cilt.49, sa.2, 2021 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 49 Sayı: 2
  • Basım Tarihi: 2021
  • Doi Numarası: 10.1002/clen.202000165
  • Dergi Adı: Clean - Soil, Air, Water
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aqualine, Aquatic Science & Fisheries Abstracts (ASFA), BIOSIS, Biotechnology Research Abstracts, CAB Abstracts, Chemical Abstracts Core, Environment Index, Geobase, Greenfile, INSPEC, Pollution Abstracts, Veterinary Science Database
  • Anahtar Kelimeler: adsorption, azo dye, Bismark Brown Y, magnetic adsorbent, water pollutant, METHYLENE-BLUE, IRON-OXIDE, EFFICIENT ADSORPTION, SYNTHETIC DYES, REMOVAL, EQUILIBRIUM, CLAY, DECOLORIZATION, DEGRADATION, SEPARATION
  • Eskişehir Osmangazi Üniversitesi Adresli: Evet

Özet

© 2020 Wiley-VCH GmbHSynthetic dyes have complex molecular structures and are stable molecules against oxidizing agents, sunlight, and microbial attack. Therefore, the treatment of dye-containing wastewater using appropriate techniques is of great importance. Difficulties in separation and recovery of an adsorbent from the solution limit the large-scale applications of the adsorption process. A magnetic separation technique can be adapted to the adsorption process to overcome these limitations. In this study, a natural mineral-based magnetic adsorbent is prepared by a co-precipitation method. Adsorption performance of magnetic montmorillonite (MagMt) is evaluated in both batch and continuous systems as a function of initial pH, contact time, adsorbent dosage, ionic strength, flow rate, and bed depth. MagMt is characterized through infrared (IR) spectroscopy, scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDX), vibrating sample magnetometer (VSM), X-ray diffraction (XRD), and zeta potential measurement. Sorption yield of MagMt for Bismark Brown-Y (BB-Y) is found as maximum (98.60%) at pH 4 with 40 mg adsorbent. Fast sorption equilibrium is attained within 10 min and the sorption data follow the pseudo-second-order kinetic model and Langmuir isotherm model. The maximum monolayer sorption capacity of MagMt is 138.70 mg g‒1.