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. Author manuscript; available in PMC: 2024 Aug 26.
Published in final edited form as: Chemosphere. 2020 Jul 8;260:127566. doi: 10.1016/j.chemosphere.2020.127566

Table 2.

Reported As(V) adsorption capacities of various adsorbents.

Adsorpent Kinetics model qe (mg g −1) Isotherm model qm mg g −1) Initial concentration (mg l−1) pH Reference

Maghemite nano particles 2h, Pseudo 1st and 2nd order NA Langmuir and Freundlich 4.64 1 7 (Park et al., 2008)
Magnetite- maghemite 3h, two steps 4.85 Langmuir 6 2 6.5 (Chowdhury et al., 2010)
Biochar/γ -Fe2O3 24h, Pseudo 2nd order 3.525 Langmuir 3.147 50 NA (Zhang et al., 2013a)
ZVI-RO ZVISG 48h, Pseudo 2nd order 15.87
6.94
Langmuir 15.58
7.92
25 NA (Bakshi et al., 2018)
Peanut shell biochar Pseudo 1st and 2nd order 4.76 Langmuir, Freundlich, and others 7.94 5 5.4 (Sattar et al., 2019)
20%-BC/VE 48h, Pseudo 2nd order 6.5 Langmuir 20.1 20 This study