Journal
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
Volume 58, Issue 47, Pages 21521-21530Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.iecr.9b04815
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Funding
- Council of Scientific and Industrial Research (CSIR) [08/630(006)/2019-EMR-I]
- New Delhi, India
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Magnetic composites possess benefits like easy separation, high porous structure, chemically modified surface, and good sorption capacity toward toxic ions removal. Herein, amine-grafted magnetic gelatin (AGMGel) composite was prepared and applied for the adsorption of nitrate (NO3-) and phosphate (PO43-) from water. The prepared AGMGel composite minimizes the irrevocable methemoglobinemia (blue baby syndrome) and algae growth (eutrophication) problems, which are often caused by both NO3- and PO43- in water. X-ray diffraction, Fourier transform infrared spectroscopy, vibrating sample magnetometer, energy dispersive X-ray analysis, Brunauer-Emmett-Teller and scanning electron microscopy were characterized to find the nature of iron oxide (Fe3O4), gelatin (Gel), and amine present in the prepared composite. The contact period, adsorbent dosage, solution pH, initial adsorbate concentration, temperature, and co-anions often affect the adsorption system optimized in batch mode. The removal mechanism of AGMGel composite toward NO3-/PO43- was found to be electrostatic attraction and complexation. The kinetics and isotherms with thermodynamic factors demonstrated the nature and order of the adsorption system. The regeneration and field studies of AGMGel composite were also evaluated.
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