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Dynamics and Treatability of Heavy Metals in Pig Farm Effluent Wastewater by Using UiO-66 and UiO-66-NH2 Nanomaterials as Adsorbents

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Abstract

Concentrated pig production is a major source of environmental pollution. Metal–organic frameworks (MOFs) show potential for reducing heavy metal pollution. Two zirconium-based octahedral MOFs, UiO-66 and UiO-66-NH2, were prepared by solvothermal method and were characterized by XRD, SEM, FT-IR, and BET. The adsorption capacity, treatability, and reusability of the adsorbents were tested in batch experiments. The optimum adsorbent dosage was 4 g/L, and the maximum removal rates at room temperature of chromium (Cr), manganese (Mn), iron (Fe), nickel (Ni), and Arsenic (As) on UiO-66 were 76.93%, 93.73%, 88.81%, 83.30%, and 86.11%, respectively. In the kinetic experiments, the adsorption process achieved equilibrium within 90 min and generally conformed to the quasi-second kinetics model. The results demonstrated that UiO-66 and UiO-66-NH2 can be used over a wide range of pH for removal of most HMs on a large scale. Meanwhile, the adsorbents maintained excellent adsorption capacity after at least 3 cycles. Overall, UiO-66 and UiO-66-NH2 have a high potential for practical application on the recovery of heavy metals in the complex wastewater from animal farms.

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Funding

This study was funded by the Ningbo Science and Technology Bureau Public Welfare Program (2019C10076), and the National Science Foundation for Young Scientists of China (41605094).

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X. Dai (Research associate) designed the experiment, wrote and edited the manuscript. L. Wang (M.S. student) and Z. Man (Ph.D. student) performed the experiment, drafted and revised the manuscript. J. Li. (Associate Researcher) supervised on the materials synthesis. Y. Jiang (Associate professor), D. Liu (Researcher) and H. Xiao (Researcher) provided research ideas and edited the manuscript. S. Shah (Professor) provided intellectual contribution to improving the manuscript.

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Correspondence to Xiaorong Dai or Yifeng Jiang.

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The authors declare no competing interests.

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Wang, L., Dai, X., Man, Z. et al. Dynamics and Treatability of Heavy Metals in Pig Farm Effluent Wastewater by Using UiO-66 and UiO-66-NH2 Nanomaterials as Adsorbents. Water Air Soil Pollut 232, 294 (2021). https://doi.org/10.1007/s11270-021-05229-6

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  • DOI: https://doi.org/10.1007/s11270-021-05229-6

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