Journal
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
Volume 8, Issue 33, Pages 12443-12452Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.0c03110
Keywords
Metal-organic frameworks; MIL-53(Cr); Electroplating sludge; Adsorptive desulfurization; Dibenzothiophene; Waste management
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Funding
- National Natural Science Foundation of China [21777119]
- Science & Technology Commission of Shanghai Municipality [18230742300, 17230711600]
- Talented Young Scientist Program of the Ministry of Science and Technology of China
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The recycling of heavy metals from solid wastes and transforming these metals into useful materials, such as metal oxides, nanocomposites, and metal-organic frameworks (MOFs), are beneficial for both sustainable development and environmental protection. MOFs are promising for adsorptive desulfurization, owing to their extremely high surface areas and tunable structures. In this paper, for the first time, MIL-53(Cr) was successfully fabricated from electroplating sludge (EPS) as a metal source through a facile hydrothermal method with and without HF. Our synthetic method is novel, green, scalable, and time-efficient. The obtained MIL-53(Cr) was employed as an adsorbent for adsorptive dibenzothiophene removal from liquid fuel. MIL-53(Cr) with HF exhibits a higher desulfurization capacity (40.11 mg g(-1)) than that of MIL-53(Cr) without HF (32.80 mg g(-1)). The improved adsorption performance of MIL-53(Cr) with HF is attributed to adding a small amount of HF, which produces highly crystalline and relativity pure MIL-53(Cr) microrods with a high surface area and porosity, and is due to a robust metal-sulfur interaction. Furthermore, the regenerated adsorbent can retain 94% of its initial sulfur adsorption capability even after 5 cycles, implying that MIL-53(Cr) prepared from Cr-EPS is an efficient adsorbent for fuel desulfurization. This study provides new insight for the production of high-value-added MOF materials from solid wastes following the principle of resource reuse.
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