Comment on “removal of hexavalent chromium by biochar supported nZVI composite : batch and fixed-bed column evaluations, mechanisms, and secondary contamination prevention”

• Main Authors: Tran, Hai Nguyen, Pham, Viet Van, Vo, Dai-Viet N., Nguyen-Tri, Phuong
• Format: Article
• Language: English
• Published: Elsevier 2019
• Subjects: QD Chemistry; TP Chemical technology
• Online Access: http://umpir.ump.edu.my/id/eprint/26174/1/Comment%20on%20%E2%80%9Cremoval%20of%20hexavalent%20chromium%20by%20biochar%20supported%20.pdf; http://umpir.ump.edu.my/id/eprint/26174/; https://doi.org/10.1016/j.chemosphere.2019.02.084; https://doi.org/10.1016/j.chemosphere.2019.02.084
• Institution: Universiti Malaysia Pahang

This article aims to discuss (1) the incorrect identification of Cr(III) and Cr(VI) binding energies in the Cr 2p XPS (X-ray photoelectron spectroscopy) spectra of the laden adsorbent (the nZVI-BC sample after Cr(VI) adsorption), (2) misconception regarding the Weber–Morris intraparticle diffusion m...