Adsorption and removal of phthalic acid and diethyl phthalate from water with zeolitic imidazolate and metal-organic frameworks
Khan, NA; Jung, BK; Hasan, Z; Jhung, SH
| HERO ID | 2347164 |
|---|---|
| In Press | No |
| Year | 2015 |
| Title | Adsorption and removal of phthalic acid and diethyl phthalate from water with zeolitic imidazolate and metal-organic frameworks |
| Authors | Khan, NA; Jung, BK; Hasan, Z; Jhung, SH |
| Journal | Journal of Hazardous Materials |
| Volume | 282 |
| Page Numbers | 194-200 |
| Abstract | ZIF-8 (zinc-methylimidazolate framework-8), one of the zeolitic imidazolate frameworks (ZIFs), has been used for the removal of phthalic acid (H2-PA) and diethyl phthalate (DEP) from aqueous solutions via adsorption. The adsorption capacity of the ZIF-8 for H2-PA was much higher than that of a commercial activated carbon or other typical metal-organic frameworks (MOFs). Because the surface area and pore volume of the adsorbents showed no favorable effect on the adsorption of H2-PA, the remarkable adsorption with ZIF-8 suggests a specific favorable interaction (electrostatic interaction) between the positively charged surface of ZIF-8 and the negatively charged PA anions. In addition, acid-base interactions also have a favorable contribution in the adsorption of H2-PA, based on the adsorptive performances of pristine and amino-functionalized MOFs and adsorption over ZIF-8 at acidic condition (pH=3.5). The reusability of ZIF-8 was also demonstrated after simple washing with methanol. On the other hand, ZIF-8 was not effective in adsorbing DEP probably because of little charge of DEP in a water solution. |
| Doi | 10.1016/j.jhazmat.2014.03.047 |
| Pmid | 24726184 |
| Wosid | WOS:000346213400024 |
| Url | https://linkinghub.elsevier.com/retrieve/pii/S0304389414002337 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Language Text | English |
| Keyword | Adsorption; Electrostatic interaction; Organic contaminants; Removal; Zeolitic imidazolate framework |
| Is Peer Review | Yes |