Insight into the molecular interaction of trace As (III) and As(V) onto the hybrid anion exchanger impregnated with Fe/Mn nanoparticles (HA502P-Fe/Mn)

Pranudta, Antika; Patra, Santanu; Klysubun, Wantana; Amonpattaratkit, Penphitcha; Nguyễn, Trung Thành; Nguyen, Van Hong; El-Moselhy, Medhat Mohamed; Padungthon, Surapol

doi:10.1016/j.cej.2022.139991

Cited by 9 publications

(3 citation statements)

References 109 publications

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“…5 a, the Fe K-edge XANES spectra of the samples under different conditions were compared with those of standard reference materials with various oxidation states and chemical speciation, namely, Fe foil (Fe(0)), FeO, Fe 2 O 3 , and Fe 3 O 4 . Herein, we observed the similarity of the absorption edge energy of all samples at 7127 eV and XANES fingerprint spectra as that of the Fe 2 O 3 standard, which agrees well with previous reports 62 , 63 . For Cr(VI) K -edge XANES spectra, Cr(III) was detected on the surfaces of nanoparticles, as seen from the similar fingerprint spectra with the Cr 2 O 3 standard (Fig.…”

Section: Resultssupporting

confidence: 92%

Copper and chromium removal from industrial sludge by a biosurfactant-based washing agent and subsequent recovery by iron oxide nanoparticles

Subsanguan,

Jungcharoen,

Khondee

et al. 2023

Sci Rep

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Industrial wastewater treatment generates sludge with high concentrations of metals and coagulants, which can cause environmental problems. This study developed a sequential sludge washing and metal recovery process for industrial sludge containing > 4500 mg/kg Cu and > 5000 mg/kg Cr. The washing agent was formulated by mixing glycolipid, lipopeptide, and phospholipid biosurfactants from Weissella cibaria PN3 and Brevibacterium casei NK8 with a chelating agent, ethylenediaminetetraacetic acid (EDTA). These biosurfactants contained various functional groups for capturing metals. The optimized formulation by the central composite design had low surface tension and contained relatively small micelles. Comparable Cu and Cr removal efficiencies of 37.8% and 38.4%, respectively, were obtained after washing the sludge by shaking with a sonication process at a 1:4 solid-to-liquid ratio. The zeta potential analysis indicated the bonding of metal ions on the surface of biosurfactant micelles. When 100 g/L iron oxide nanoparticles were applied to the washing agent without pH adjustment, 83% Cu and 100% Cr were recovered. In addition, X-ray diffraction and X-ray absorption spectroscopy of the nanoparticles showed the oxidation of nanoparticles, the reduction of Cr(V) to the less toxic Cr(III), and the absorption of Cu. The recovered metals could be further recycled, which will be beneficial for the circular economy.

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Section: Resultssupporting

confidence: 92%

Copper and chromium removal from industrial sludge by a biosurfactant-based washing agent and subsequent recovery by iron oxide nanoparticles

Subsanguan,

Jungcharoen,

Khondee

et al. 2023

Sci Rep

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“…NPs dispersed in the polymeric phase should have appropriate and beneficial physical and chemical properties, that is they must be practically insoluble in water within the required pH range, and must also show adequate reactivity. Several nanostructures containing polyvalent metals such as Fe, Mn, Zr are the most common adsorbents under study [31][32][33][34][35][36][37][38]. There are also HIXs containing zero valent (metallic) deposits such as Fe, Pd, Ag with reducing and catalytic properties [39].…”

Section: Ion Exchangers Vs Hybrid Ion Exchangersmentioning

confidence: 99%

Multifunctional Composite Materials Based on Anion Exchangers Modified with Copper Compounds—A Review of Their Synthesis Methods, Characteristics and Applications

Kociołek-Balawejder,

Stanisławska,

Mucha

et al. 2023

Polymers

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As copper and its compounds are of fundamental importance for the development of innovative materials, the synthesis of composites intended for water purification was undertaken in which submicron copper containing particles were dispersed within the matrix of a strongly basic anion exchanger, with a macroporous and gel-like structure. Due to their trimethylammonium functional groups, the host materials alone exhibited an affinity to anionic water contaminants and antimicrobial properties. The introduction of such particles as CuO, Cu2O, metallic Cu, CuO/FeO(OH), Cu4O3, Cu(OH)2, Cu4(OH)6SO4, Cu2(OH)3Cl increased these properties and demonstrated new properties. The composites were obtained unconventionally, in ambient conditions, using eco-friendly reagents. Alternative synthesis methods were compared and optimized, as a result of which a new group of hybrid ion exchangers was created (HIXs) containing 3.5–12.5 wt% of Cu. As the arrangement of the inorganic phase in the resin matrix was atypical, i.e., close to the surface of the beads, the obtained HIXs exhibited excellent kinetic properties in the process of oxidation and adsorption of As(III), as well as catalytic properties for the synthesis of triazoles via click reaction, and also antimicrobial properties in relation to Gram-positive Enterococcus faecalis and Gram-negative Pseudomonas aeruginosa and Escherichia coli, preventing biofilm formation. Using thermogravimetry, the effect of the inorganic phase on decomposition of the polymeric phase was evaluated for the first time and comprehensively, confirming the relationship and finding numerous regularities. It was also found that, depending on the oxidation state (CuO, Cu2O, Cu), copper-containing particles affected the textural properties of the polymeric phase endowing a tighter structure, limiting the porosity and reducing the affinity for water.

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“…The standard enthalpy change in this process is usually <2 kcal mol –1 (∼8.4 kJ mol –1 ), and it is conceivable that the enthalpy change will be >8 kJ mol –1 once the adsorption process is dominated by chemisorption, Therefore, the E value of 8 kJ mol –1 as a threshold to differentiate between adsorption types still holds significance. To date, most of the adsorption mechanisms judged by the D–R model have been experimentally and/or theoretically verified, including some classical physical and chemical adsorption processes, − which suggests its satisfactory reliability. Notably, compared to legacy adsorption technology, reliable mechanistic studies of the emerging adsorption technology (e.g., nanoadsorbents) require fitting of multiple adsorption models along with advanced physicochemical characterizations and computational calculations, especially when the calculated E values are close to 8 kJ mol –1 . − …”

mentioning

confidence: 99%

Rebuttal to Correspondence on “Superselective Hg(II) Removal from Water Using a Thiol-Laced MOF-Based Sponge Monolith: Performance and Mechanism”

Fu,

Luo

2023

Environ. Sci. Technol.

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Insight into the molecular interaction of trace As (III) and As(V) onto the hybrid anion exchanger impregnated with Fe/Mn nanoparticles (HA502P-Fe/Mn)

Cited by 9 publications

References 109 publications

Copper and chromium removal from industrial sludge by a biosurfactant-based washing agent and subsequent recovery by iron oxide nanoparticles

Copper and chromium removal from industrial sludge by a biosurfactant-based washing agent and subsequent recovery by iron oxide nanoparticles

Multifunctional Composite Materials Based on Anion Exchangers Modified with Copper Compounds—A Review of Their Synthesis Methods, Characteristics and Applications

Rebuttal to Correspondence on “Superselective Hg(II) Removal from Water Using a Thiol-Laced MOF-Based Sponge Monolith: Performance and Mechanism”

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