Removal of Lead from Wastewater by Iron–Benzenetricarboxylate Metal-Organic Frameworks

  • سال انتشار: 1400
  • محل انتشار: نشریه متدهای شیمیایی، دوره: 5، شماره: 3
  • کد COI اختصاصی: JR_CHM-5-3_008
  • زبان مقاله: انگلیسی
  • تعداد مشاهده: 317
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نویسندگان

Gholamreza Nabi Bidhendi

Department of Environmental Engineering, University of Tehran, Tehran, Iran

Naser Mehrdadi

Department of Environmental Engineering, University of Tehran, Tehran, Iran

Mehran Firouzbakhsh

PhD Student of Environmental Engineering, Water and Waste Water, University of Tehran, Kish International Campus, Kish, Iran

چکیده

Iron–benzenetricarboxylate metal-organic frameworks were prepared chemically in the present study. For this purpose, using iron (II, III) chloride and trimesic acid, the nano metal-organic ramework was synthesized and then was identified and characterized by scanning tunneling electron microscopy, X-ray diffraction analysis, Fourier transform infrared spectrogram, ultraviolet, and N۲ adsorption and desorption (Brunauer-Emmett-Teller and Barrett- Joyner-Halenda) techniques. The structure, morphology, purity, and crystallinity of the metal-organic framework were also investigated. The framework was employed to remove lead from wastewater and the effect of different parameters, including absorbent concentration (۰.۲-۰.۵ mg/L), pH (۳.۵-۱۲.۵), temperature (۱۰-۷۵ °C), and lead concentration (۱۰-۱۵۰ mg/L), on lead removal was investigated. The maximum efficiency, as ۱۰۰% lead removal, was obtained with ۰.۲۵ mg/L of BTC-Fe adsorbent at ۵۰ °C and a pH of ۳.۴. Due to the features of the employed adsorbent, such as magnetic effects, reusability, large surface area, low cost, and high efficiency, it can be suggested as an ideal option for the removal of lead.

کلیدواژه ها

Lead, Trimesic acid, Organic Metal, Wastewater Treatment

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