Adsorption of As(III) and As(V) from aqueous solution by magnetic biosorbents derived from chemical carbonization of pea peel waste biomass: Isotherm, kinetic, thermodynamic and breakthrough curve modeling studies

Arsenic adsorption from aqueous solution and groundwater using monometallic (Fe) and bimetallic (Fe/Mn) Tectona biochar synthesized from plant refuse: mechanism, isotherm, and kinetic study

“…As reported by Kazi et al [53] sometimes biosorbents need high temperature or sometimes need low temperature for the activation of surface-active binding sites. Almost similar results were also reported in a study done by Sahu et al [48] in which the highest removal was observed at 55 °C operating temperature using a magnetic biosorbent.…”

“…The removal of As(III) was not much affected by the pH of the solution, only a slight reduction in adsorption was observed with varying solution pH. Sahu et al [48] have also reported similar findings in their study on the effect of pH on adsorption of As by magnetic biosorbent. Removal of As is very much dependent on As species to be adsorbed and pH of the solution [49].…”

Efficient Separation of Uranium(VI) by CaCO3-Doped Chitosan with PO43– Modification: Adsorption Behaviors and Mechanism Study

“…At high flow rate, the uranium species did not have enough time to be adsorbed on CaCO 3 @aCS/PA, which resulted the uranium in solution not being efficiently captured by CaCO 3 @aCS/PA, thus creating a rapid breakthrough. When the uranium solution was injected at a low rate, the contact time between the uranium and CaCO 3 @aCS/PA increased, thereby lengthening the breakthrough time . In conclusion, using CaCO 3 @aCS/PA for the purification of uranium solution with a low initial concentration and low flow rate could not only lengthen the breakthrough time but also ensure the removal efficiency for uranium in solution.…”

“…When the uranium solution was injected at a low rate, the contact time between the uranium and CaCO 3 @aCS/PA increased, thereby lengthening the breakthrough time. 54 In conclusion, using CaCO 3 @aCS/PA for the purification of uranium solution with a low initial concentration and low flow rate could not only lengthen the breakthrough time but also ensure the removal efficiency for uranium in solution.…”

Biosorption of arsenic (III) from aqueous solution using calcium alginate immobilized dead biomass of Acinetobacter sp. strain Sp2b

“…The comprehensive findings emphasize the diverse potential of various biomaterials and microbes for biosorption, especially in removing As III from waste water. Table 4 presents the maximum adsorption capacity (q max ) and optimal conditions for As III across various adsorbents explored in the literature alongside CASp2b 81 , 108 – 111 . Different biomasses of bacteria, fungi, algae, or plants have been tested in untreated dried or carbonized states for biosorption.…”