Improvement of As(V) Adsorption by Reduction of Granular to Micro-Sized Ferric Hydroxide
نویسندگان
چکیده
The remediation of groundwater containing arsenic is a problem that has been addressed using adsorption processes with granulated materials in columns, but the itself could be improved by micro-sized adsorbents stirred systems. In this study, arsenate (As(V)) batch experiments were performed granular ferric hydroxide (GFH) and two derived materials. Reduced-size produced energetic ball milling, giving final sizes 0.1–2 µm (OF-M samples) ultra-sonication, producing 2–50 (OF-U samples). Equilibrium isotherm studies showed Langmuir model was good fit for three sorbents, highest maximum capacity (qmax) OF-U lowest OF-M. samples occurred according to obtained equilibrium isotherms indicated absence interfering agents adsorbents. Batch kinetics tests beakers followed pseudo second-order sorbent faster than GFH sorbent. also an increase qe values reduced-size application ultrasonication 23 % qmax b term 34-fold kinetic constant (k2) systems tested. These results suggest new approach, based on potential improving groundwater.
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ژورنال
عنوان ژورنال: Processes
سال: 2022
ISSN: ['2227-9717']
DOI: https://doi.org/10.3390/pr10051029