Applicability of innovative adsorbents in geogenic arsenic removal
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Date
2021
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier Ltd
Access Rights
info:eu-repo/semantics/embargoedAccess
Abstract
Exposure to high concentrations of geogenic arsenic via well-waters is a worldwide health concern. The purpose of the present work was to search the experimental results of the behavior of raw Uspheres (RU), iron Uspheres (FeU), iron Uspheres 200 °C (FeU@200°C) in the removal of arsenic in accordance with some factors impacting the adsorption process. Some study parameters including initial pH (2–10), adsorbent amount (0.1–10.0 g), temperature (10–50 °C), and operating time (5–90 min) were examined. Under wanted conditions, maximum removal efficiencies of 90.36%, 98.04%, and 97.86% were obtained with RU, FeU, and FeU@200°C, respectively. The equilibrium adsorption was found to match the Langmuir isotherm model based on the collected data. The maximum adsorption capacity of RU, FeU, and FeU@200°C was 6.09, 6.61, and 6.46 mg/g, severally. The arsenic adsorption onto RU, FeU, and FeU@200°C was acknowledged by the pseudo-second-order. Electrostatic interaction and surface complexation mechanisms are involved in arsenic adsorption. The Box-Behnken statistical experiment design method was applied to specify the impact of pH, temperature, and the amount of RU, FeU, and FeU@200°C on the percentage of arsenic removal.
Description
Keywords
Adsorption, Arsenic, Geogenic, Uspheres
Journal or Series
Journal of Cleaner Production
WoS Q Value
Q1
Scopus Q Value
Q1
Volume
327
Issue
-
