Tailoring the topology of ZIF-67 metal-organic frameworks (MOFs) adsorbents to capture humic acids
Chlorination is a versatile technique to combat water-borne pathogens. Over the last years, there has been continued research interest to abate the formation of chlorinated disinfection by-products (DBPs). To prevent hazardous DBPs in drinking water, it is decided to diminish organic precursors, amo...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-01-01
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| Series: | Ecotoxicology and Environmental Safety |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0147651323013581 |
| _version_ | 1797374216912240640 |
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| author | Mahmoud Shams Zohreh Niazi Mohammad Reza Saeb Sina Mozaffari Moghadam Ali Akbar Mohammadi Mehdi Fattahi |
| author_facet | Mahmoud Shams Zohreh Niazi Mohammad Reza Saeb Sina Mozaffari Moghadam Ali Akbar Mohammadi Mehdi Fattahi |
| author_sort | Mahmoud Shams |
| collection | DOAJ |
| description | Chlorination is a versatile technique to combat water-borne pathogens. Over the last years, there has been continued research interest to abate the formation of chlorinated disinfection by-products (DBPs). To prevent hazardous DBPs in drinking water, it is decided to diminish organic precursors, among which humic acids (HA) resulting from the decomposition and transformation of biomass. Metal-organic frameworks (MOFs) such as zeolitic imidazolate frameworks (ZIFs) have recently received tremendous attention in water purification. Herein, customized ZIF-67 MOFs possessing various physicochemical properties were prepared by changing the cobalt source. The HA removal by ZIF-67-Cl, ZIF-67-OAc, ZIF-67-NO3, and ZIF-67-SO4 were 85.6%, 68.9%, 86.1%, and 87.4%, respectively, evidently affected by the specific surface area. HA uptake by ZIF-67-SO4 indicated a removal efficiency beyond 90% in 4 <pH< 8, while a drop was observed when pH reached ∼10. A parametric study revealed that the adsorption efficiency was a function of dosage; moreover, the removal percentage remained > 90% after 60 min mixing the solution with 0.3 g L−1 ZIF-67-SO4. Notably, an acceptable removal performance (∼72.3%) was obtained even at HA concentrations up to 100 mg L−1. The equilibrium data fitted well with the isotherm models in the order of Langmuir> Hill > BET> Khan > Redlich-Peterson> Jovanovic> Freundlich > and Temkin. The maximum adsorption capacity qm for HA uptake by ZIF-67-SO4 was 175.89 mg g−1, well above the majority of adsorbents. The pseudo-first-order model described the rate of HA adsorption by time. In conclusion, ZIF-67-SO4 presented promising adsorptive properties against HA. Further studies would be needed to minimize cobalt leaching from the ZIF-67-SO4 structure and improve its reusability safely, to ensure its effectiveness and the economy of adsorption system. |
| first_indexed | 2024-03-08T19:01:44Z |
| format | Article |
| id | doaj.art-52dd1613383644b2af5e3623aafe6d6a |
| institution | Directory Open Access Journal |
| issn | 0147-6513 |
| language | English |
| last_indexed | 2024-03-08T19:01:44Z |
| publishDate | 2024-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ecotoxicology and Environmental Safety |
| spelling | doaj.art-52dd1613383644b2af5e3623aafe6d6a2023-12-28T05:14:24ZengElsevierEcotoxicology and Environmental Safety0147-65132024-01-01269115854Tailoring the topology of ZIF-67 metal-organic frameworks (MOFs) adsorbents to capture humic acidsMahmoud Shams0Zohreh Niazi1Mohammad Reza Saeb2Sina Mozaffari Moghadam3Ali Akbar Mohammadi4Mehdi Fattahi5Social Determinants of Health Research Center, Mashhad University of Medical Sciences, Mashhad, Iran; Department of Environmental Health Engineering, School of Health, Mashhad University of Medical Sciences, Mashhad, IranChemistry Department, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, IranDepartment of Pharmaceutical Chemistry, Medical University of Gdańsk, J. Hallera 107, 80-416 Gdańsk, PolandDepartment of Environmental Health Engineering, School of Health, Mashhad University of Medical Sciences, Mashhad, IranDepartment of Environmental Health Engineering, School of Public Health, Neyshabur University of Medical Sciences, Neyshabur, Iran; Corresponding author.Institute of Research and Development, Duy Tan University, Da Nang, Viet Nam; School of Engineering &Technology, Duy Tan University, Da Nang, Viet Nam; Corresponding author at: Institute of Research and Development, Duy Tan University, Da Nang, Viet Nam.Chlorination is a versatile technique to combat water-borne pathogens. Over the last years, there has been continued research interest to abate the formation of chlorinated disinfection by-products (DBPs). To prevent hazardous DBPs in drinking water, it is decided to diminish organic precursors, among which humic acids (HA) resulting from the decomposition and transformation of biomass. Metal-organic frameworks (MOFs) such as zeolitic imidazolate frameworks (ZIFs) have recently received tremendous attention in water purification. Herein, customized ZIF-67 MOFs possessing various physicochemical properties were prepared by changing the cobalt source. The HA removal by ZIF-67-Cl, ZIF-67-OAc, ZIF-67-NO3, and ZIF-67-SO4 were 85.6%, 68.9%, 86.1%, and 87.4%, respectively, evidently affected by the specific surface area. HA uptake by ZIF-67-SO4 indicated a removal efficiency beyond 90% in 4 <pH< 8, while a drop was observed when pH reached ∼10. A parametric study revealed that the adsorption efficiency was a function of dosage; moreover, the removal percentage remained > 90% after 60 min mixing the solution with 0.3 g L−1 ZIF-67-SO4. Notably, an acceptable removal performance (∼72.3%) was obtained even at HA concentrations up to 100 mg L−1. The equilibrium data fitted well with the isotherm models in the order of Langmuir> Hill > BET> Khan > Redlich-Peterson> Jovanovic> Freundlich > and Temkin. The maximum adsorption capacity qm for HA uptake by ZIF-67-SO4 was 175.89 mg g−1, well above the majority of adsorbents. The pseudo-first-order model described the rate of HA adsorption by time. In conclusion, ZIF-67-SO4 presented promising adsorptive properties against HA. Further studies would be needed to minimize cobalt leaching from the ZIF-67-SO4 structure and improve its reusability safely, to ensure its effectiveness and the economy of adsorption system.http://www.sciencedirect.com/science/article/pii/S0147651323013581Disinfection by-products (DBPs)Humic acids (HA)Metal-organic frameworks (MOFs)ZIF-67 |
| spellingShingle | Mahmoud Shams Zohreh Niazi Mohammad Reza Saeb Sina Mozaffari Moghadam Ali Akbar Mohammadi Mehdi Fattahi Tailoring the topology of ZIF-67 metal-organic frameworks (MOFs) adsorbents to capture humic acids Ecotoxicology and Environmental Safety Disinfection by-products (DBPs) Humic acids (HA) Metal-organic frameworks (MOFs) ZIF-67 |
| title | Tailoring the topology of ZIF-67 metal-organic frameworks (MOFs) adsorbents to capture humic acids |
| title_full | Tailoring the topology of ZIF-67 metal-organic frameworks (MOFs) adsorbents to capture humic acids |
| title_fullStr | Tailoring the topology of ZIF-67 metal-organic frameworks (MOFs) adsorbents to capture humic acids |
| title_full_unstemmed | Tailoring the topology of ZIF-67 metal-organic frameworks (MOFs) adsorbents to capture humic acids |
| title_short | Tailoring the topology of ZIF-67 metal-organic frameworks (MOFs) adsorbents to capture humic acids |
| title_sort | tailoring the topology of zif 67 metal organic frameworks mofs adsorbents to capture humic acids |
| topic | Disinfection by-products (DBPs) Humic acids (HA) Metal-organic frameworks (MOFs) ZIF-67 |
| url | http://www.sciencedirect.com/science/article/pii/S0147651323013581 |
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