Juela Quintuña, Diego Marcelo2022-02-092022-02-0920210301-4797, e 1095-8630http://dspace.ucuenca.edu.ec/handle/123456789/38008https://www.scopus.com/record/display.uri?eid=2-s2.0-85098578060&doi=10.1016%2fj.jenvman.2020.111815&origin=inward&txGid=e5d05f2907d0ecd607ec5a1dd0f823fcThis comment analyses the results of the fixed-bed column modeling from the studies published by Gupta and Garg (2019), and Das et al. (2020), which are the last two papers on this topic published in this journal.es-ESThomas modelYoon Nelson modelBohart Adams modelFixed bed modelingLogistic modelComments on “treatment of malachite green dye containing solution using bio-degradable sodium alginate/NaOH treated activated sugarcane baggsse charcoal beads: batch, optimization using response surface methodology and continuous fixed bed column study” and “adsorption and oxidation of ciprofloxacin in a fixed bed column using activated sludge derived activated carbon”ARTÍCULO10.1016/j.jenvman.2020.111815