Zirconium fumarate metal-organic framework: a selective adsorbent for fluoride from industrial wastewater

Abstract Many industrial processes produce high fluoride (150–450 mg/L) containing effluent. It may be recovered from the processing plants at source. One effective technology is selective adsorption waste stream. Metal-organic frameworks (MOFs) are crystalline compounds with surface area, pore volume, and tuneable channels suitable adsorbents. This study used zirconium fumarate (ZrFu) MOF to recover iron steel wastewater collected blast furnaces coke plants, respectively. In batch experiments, complete uptake synthetic water (150 mg F/L) was obtained 3 g ZrFu/L (qe = 49.66 mg/g), while for furnace (170 plant (130 wastewater, 10 required, 17 mg/g) 13 difference in adsorbent dose caused by interfering ions which compete same sites as ions. Chemisorption rate-limiting step, it conforms Langmuir isotherm pseudo-second-order model. Fluoride desorption achieved deionized 1 h. suggests that adsorption–desorption process could scaled up an reuse wastewater.