Zinc Removal Mechanisms with Recycled Lignocellulose: from Fruit Residual to Biosorbent then Soil Conditioner

Kayranli B., Gök O., Yılmaz T., Gök G., Çelebi H., Seçkin İ. Y., ...More

WATER AIR AND SOIL POLLUTION, vol.232, no.8, 2021 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 232 Issue: 8
  • Publication Date: 2021
  • Doi Number: 10.1007/s11270-021-05260-7
  • 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, Chemical Abstracts Core, Chimica, Compendex, EMBASE, Environment Index, Geobase, Greenfile, Pollution Abstracts, Veterinary Science Database, Civil Engineering Abstracts
  • Keywords: Zinc, Lignocellulosic adsorbent, Soil conditioner, Removal mechanism, Zero waste strategy, HEAVY-METALS, AQUEOUS-SOLUTION, ADSORPTION, WASTE, SORPTION, SHELL, IONS, PHYSIOLOGY, POTASSIUM, ADSORBENT
  • Gazi University Affiliated: Yes


This study aims to remove zinc by using banana peel from an aqueous medium. The peel was a lignocellulosic adsorbent and characterized by FTIR spectra, SEM-EDS images, and elemental analysis. The effect of contact time, pH, and adsorbent dosage on the sequestration of zinc was observed. The sorption process of zinc was well described with the pseudo-second-order kinetic and Langmuir isotherm model. The rate-limiting step to the adsorption process was determined by applying the intra-particle diffusion model. The removal mechanism is that ion exchange, electrostatic interaction, complex formation, physical adsorption, and precipitation carried out in cooperation with the banana peel functional groups and zinc ion in many ways. FTIR analysis demonstrates that the surface carboxylic/hydroxyl functional groups of banana peel play a key role in the adsorption of zinc ions. The results showed that banana peel, a locally available fruit residual, is an efficient and eco-friendly adsorbent to reduce Zn2+. The usage of banana peel as an adsorbent for the sequestering of zinc from water ensures both the technical advantage and cost-effectiveness of the sustainable environmental management concept and zero waste strategy. Furthermore, the value-added products containing organic compounds and zinc can be used efficiently as a soil conditioner.