Turning waste avocado stones and montmorillonite into magnetite-supported nanocomposites for the depollution of methylene blue: adsorbent reusability and performance optimization.

ABSTRACT: The existence of methylene blue (MB) in wastewater even as traces is raising environmental concerns. In this regard, the performances of four adsorbents, avocado stone biochar (AVS-BC), montmorillonite (MMT), and their magnetite Fe₃O₄-derived counterparts, were compared. Results showed the superior performance of Fe₃O₄@AVS-BC and Fe₃O₄@MMT nanocomposites with removal percentages (%R) of 95.59% and 88%. The morphological features of AVS-BC as revealed by SEM analysis showed a highly porous surface compared to a plane and smooth surface in the case of MMT. Surface analysis using FT-IR and Raman spectroscopies corroborated the existence of the Fe-O peaks upon loading with magnetite. The XRD analysis confirmed the formation of c

SUBMITTER: El-Shafie AS 

PROVIDER: S-EPMC10698139 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature