Preparation and Characterization an Active Carbon Adsorbent from Waste Mandarin Peel and Determination of Adsorption Behavior on Removal of Synthetic Dye Solutions

Unugul T., UĞUR NİGİZ F.

WATER AIR AND SOIL POLLUTION, vol.231, no.11, 2020 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Review
  • Volume: 231 Issue: 11
  • Publication Date: 2020
  • Doi Number: 10.1007/s11270-020-04903-5
  • Journal Name: WATER AIR AND SOIL POLLUTION
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, ABI/INFORM, Agricultural & Environmental Science Database, Aqualine, Aquatic Science & Fisheries Abstracts (ASFA), Artic & Antarctic Regions, BIOSIS, Biotechnology Research Abstracts, CAB Abstracts, Chimica, Compendex, EMBASE, Environment Index, Geobase, Greenfile, Pollution Abstracts, Veterinary Science Database, Civil Engineering Abstracts
  • Keywords: Batch adsorption, Kinetic, Methylene blue, Methyl orange, Thermodynamic
  • Çanakkale Onsekiz Mart University Affiliated: Yes

Abstract

In this study, carbonized mandarin peel (CMP) was prepared and characterized and the adsorption behavior of the activated carbon for methylene blue (MB) and methyl orange (MO) removal was investigated. Adsorbent (CMP) was characterized by means of scanning electron microscopy (SEM-EDS), X-ray diffraction (XRD), thermo-gravimetric analyses (TGA), and Fourier transform infrared spectroscopy (FTIR). In the adsorption studies, the effects of initial dye concentration, solution pH, adsorbent dosage, and contact time on dye removal were investigated. In the same conditions, MB showed higher adsorption capacity than that of the MO. Therefore, the isotherms, kinetics, and thermo-dynamical adsorption studies were performed for MB. The appropriate adsorption isotherm for MB using CMP was determined as Langmuir isotherm. The kinetic values are well defined by the pseudo-second order kinetic model. The highest MB removal of 99.77% was obtained with CMP concentration of 5 g/L when the dye concentration was 5 mg/L at pH value of 6.9. After solvent regeneration, the adsorbent maintained 95.17% of its regeneration activity. The results show that CMP can be used as a low-cost and natural adsorbent to remove synthetic dye from the effluent of the textile wastewater.