The removal performance of As (III, V) was studied through intermittent experiments and adsorption kinetics. At a pH of 9.2 0.1, the removal rates of As (III) and As (V) by UiO-66 were 205.0 and 68.21 mg/g, respectively. The Gibbs free energy calculation and Dubinin Radushkevich (D-R) isotherm model confirmed that the As removal process is exothermic and a chemical adsorption reaction. The fixed bed reactor removal experiment showed that the effective treatment volumes of As (III) and As (V) reached 2270 and 1775 BVs, respectively, until reaching the strictest As regulation level of 10 lg/L (initial As concentration of 100 lg/L). FTIR and XPS studies have shown that the ZrAO bond in the zirconium metal organic framework plays an important role in the adsorption of As. XANES research shows that As adsorbs on UiO-66 without any change in oxidation state. More interestingly, EXAFS spectroscopy shows that on the hexagonal Zr cluster of UiO-66, As (V) and As (III) mainly form bidentate binuclear complexes. Metal zirconium organic framework materials have the advantages of non toxicity, high stability, large arsenic adsorption capacity, low cost, and easy availability.
The special adsorption of arsenic by metal organic framework zirconium: an engineering exploration and mechanism exploration dataset, obtained through experimental methods, with a data format of decimal (. xls), 5 sets of data, and a total of 34500 experimental data.
Indoor experiments, instrument characterization, independently generated.
Simulations were conducted using XPS, SEM, TEM, and infrared spectroscopy software modules to obtain experimental data.
The data quality is good.
| # | number | name | type |
| 1 | 2018YFC0406400 | National key R & D plan |
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CSTR:11738.11.ncdc.UTCMW.db2159.2022
10.12072/ncdc.UTCMW.db2159.2022