Renewable Resource-Based Magnetic Nanocomposites for Removal and Recovery of Phosphorous from Contaminated Waters

Ramasahayam, Sunil Kumar; Gunawan, Gunawan; Finlay, Chris; Viswanathan, Tito

doi:10.1007/s11270-012-1241-2

Cited by 45 publications

(18 citation statements)

References 34 publications

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“…Ramasahayam et al [41] developed a protocol for microwave-assisted synthesis of magnetic nanocomposite using pine wood shavings and a spacer (saturated NaCl), which they denoted as Media 1. Figure 4 displays the SEM image of nanoparticles embedded in a woody matrix in a highly dispersed state.…”

Section: Plant Biomassmentioning

confidence: 99%

Plant-Mediated Green Synthesis of Iron Nanoparticles

Herlekar

Siddhivinayak

Kumar

2014

Journal of Nanoparticles

274

104

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In the recent years, nanotechnology has emerged as a state-of-the-art and cutting edge technology with multifarious applications in a wide array of fields. It is a very broad area comprising of nanomaterials, nanotools, and nanodevices. Amongst nanomaterials, majority of the research has mainly focused on nanoparticles as they can be easily prepared and manipulated. Physical and chemical methods are conventionally used for the synthesis of nanoparticles; however, due to several limitations of these methods, research focus has recently shifted towards the development of clean and eco-friendly synthesis protocols. Magnetic nanoparticles constitute an important class of inorganic nanoparticles, which find applications in different areas by virtue of their several unique properties. Nevertheless, in comparison with biological synthesis protocols for noble metal nanoparticles, limited study has been carried out with respect to biological synthesis of magnetic nanoparticles. This review focuses on various studies outlining the novel routes for biosynthesis of these nanoparticles by plant resources along with outlining the future scope of work in this area.

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Section: Plant Biomassmentioning

confidence: 99%

Plant-Mediated Green Synthesis of Iron Nanoparticles

Herlekar

Siddhivinayak

Kumar

2014

Journal of Nanoparticles

274

104

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“…For a given application, systemslevel evaluations such as life cycle assessment (LCA) or life cycle cost (LCC) analysis are needed to evaluate the relative advantages and disadvantages of potential recovery approaches. For example, physicochemical recovery of phosphorus, such as using anion exchange followed by precipitation of phosphorusrich chemicals using additions of calcium or magnesium, is promising for concentrating and recovering phosphorus from such dilute waters, but can be costly for large volumetric flows of water (e.g., million gallons per day [mgd] level) with low phosphorus concentrations (Kouno et al, 1995;Morse et al, 1998;Ramasahayam et al, 2012;Ramasahayam et al, 2014). Microbial processes can enrich dilute phosphorus, and offer resiliency and can be widely used as part of an integrated approach to phosphorus recovery, along with other resources (Gebremariam et al, 2011;Yuan et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Biological Phosphorus Recovery: Review of Current Progress and Future Needs

Ballent

et al. 2017

Water Environment Research

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This review summarizes the main species of polyphosphate accumulating organisms (PAOs) and algae, illustrates their pathways and key enzymes, discusses biological phosphorous (P) recovery from dilute waters, and identifies research avenues to encourage adoption and implementation. Phylogenic analysis indicates that the Proteobacteria phylum plays an important role in enhanced biological phosphorus removal (EBPR). The use of meta-transcriptome analysis and single cell-based techniques to help overcome the challenges associated with non-PAO competition was discussed. For algae capable of luxury phosphorus uptake, fundamental research is needed to illustrate the phosphorus regulation process and key proteins involved. Emerging technologies and processes have great potential to further advance phosphorus recovery, including combined PAO/algae reactors, bioelectrochemical systems, and biosorption by phosphorus binding proteins. As the paradigm shifts toward holistic resource recovery, research is needed to explore P+ recovery with other resources (e.g., metals from sludge), using a combination of biological and chemical approaches.

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“…Until now, a number of methods such as precipitation routes, membrane separation techniques, ion exchange, adsorption, and extraction have been used for the removal of heavy metal ions. Based on the guidelines of World Health Organization and Environmental Protection Agency, during the last decade, the adsorption techniques for water and wastewater treatment have been well considered as efficient, eco‐friendly, and cost‐effective .…”

Section: Introductionmentioning

confidence: 99%

“…1 Although certain heavy metals are metabolically needed in trace concentrations, higher amounts are toxic or even carcinogenic, entailing widespread disorders and physical health problems, hence the priority assigned to their removal by researchers. 2Until now, a number of methods such as precipitation routes, 3-5 membrane separation techniques, 6-8 ion exchange, 9,10 adsorption, [11][12][13] and extraction 14 have been used for the removal of heavy metal ions.Based on the guidelines of World Health Organization and Environmental Protection Agency, during the last decade, the adsorption techniques for water and wastewater treatment have been well considered as efficient, eco-friendly, and cost-effective. 15 Furthermore, the adsorbents may be regenerated in a desorption process and reused.…”

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confidence: 99%

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New acrylamide‐based monomer containing metal chelating units: Homopolymer grafted magnetite nanoparticles via ATRP for the magnetic removal of Co(II) ions

Mirzaeinejad

Mansoori

Koohi‐Zargar

2017

Polymers for Advanced Techs

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In this research, we synthesized and characterized a new acrylamide‐based monomer containing pyridine and 1,3,4‐oxadiazole moieties, N‐(4‐(5‐(pyridin‐2‐yl)‐1,3,4‐oxadiazol‐2‐yl)phenyl)acrylamide (POPA). Poly(POPA)‐grafted magnetite nanoparticles were then obtained via surface‐initiated atom transfer radical polymerization. The grafted nanoparticles were characterized by Fourier transform infrared analysis, scanning electron microscopy, wide angle X‐ray diffraction, and vibrating sample magnetometry. The amount of the grafted polymer was 126 mg/g, as calculated from thermo gravimetric analysis experiment. The capability of poly(POPA)‐g‐magnetite nanoparticles (MNPs) to remove Co(II) cations, under optimal time period, pH and adsorbent mass, was shown by atomic absorption. The adsorption kinetics obeyed the pseudo–second‐order kinetic equation, and the adsorption isotherm was best described by the Freundlich model with a maximum adsorption capacity of 59.90 mg/g. In addition, the poly(POPA)‐g‐MNPs were regenerated by simply washing with an aqueous 0.1M HCl solution, and no considerable decrease was observed in the extraction efficiency following the test of up to 7 cycles. These findings suggest that poly(POPA)‐g‐MNPs are stable and reusable adsorbent, and they could be potentially applied to water treatments for an efficient removal of Co(II) cations.

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Renewable Resource-Based Magnetic Nanocomposites for Removal and Recovery of Phosphorous from Contaminated Waters

Cited by 45 publications

References 34 publications

Plant-Mediated Green Synthesis of Iron Nanoparticles

Plant-Mediated Green Synthesis of Iron Nanoparticles

Biological Phosphorus Recovery: Review of Current Progress and Future Needs

New acrylamide‐based monomer containing metal chelating units: Homopolymer grafted magnetite nanoparticles via ATRP for the magnetic removal of Co(II) ions

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