A review of bismuth-based sorptive materials for the removal of major contaminants from drinking water

Ranjan, Manish; Singh, Prabhat Kumar; Srivastav, Arun Lal

doi:10.1007/s11356-019-05359-9

Cited by 33 publications

(18 citation statements)

References 66 publications

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“…The electrophoretic mobility of Bi 2 O 3 equilibrated for 24 h in 0.01 M KCl at pH values between 3 and 10 (adjusted with 0.01 or 0.1 M HNO 3 or KOH) was measured by Laser Doppler Velocimetry coupled with Photon Correlation Spectroscopy (DELSA 440, Beckman Coulter Inc., Brea, CA, USA), and the zeta potential (ζ) was calculated using the Smoluchowski equation [ 31 ]. The plot of the ζ potential vs. pH (not shown) provided a PZC for the Bi 2 O 3 at pH 8.5, in line with the value range reviewed by Ranjan et al [ 27 ] for Bi-based adsorbents.…”

Section: Methodssupporting

confidence: 85%

“…On the other hand, As(III) adsorption decreased at the higher electrolyte concentration, but the final adsorbed amount remained greater than that of As(V) in all cases ( Figure 6 ), indicating a better performance of Bi 2 O 3 in binding the more toxic and generally more difficult to remove As(III), even in a saline environment. The reduction in As adsorption onto Bi 2 O 3 with high saline concentration may be attributed to the interaction of the different dissolved inorganic species (Cl − , NO 3 − , SO 4 2− , SiO 3 2−, and PO 4 3− ) with the surfaces of the material [ 27 ], consequently competing for the active adsorption sites and deteriorating the capacity of Bi 2 O 3 to remove As.…”

Section: Resultsmentioning

confidence: 99%

“…Research has been focusing lately on innovative substrates for the removal of contaminants from water, with bismuth-based materials standing out due to being safe, non-toxic and non-carcinogenic [ 24 ]. Bi-based compounds have a number of biomedical applications [ 25 ] and display great potential for photocatalytic degradation of organic contaminants [ 26 ] and for the removal of different anionic species often found in groundwater and wastewater (e.g., PO 4 3− , NO 3 − , SO 4 2− , Cl − , and F − ) [ 27 ]. These materials have been proposed as possible candidates for As adsorption only recently [ 28 , 29 ], with promising results depending on material composition and synthesis method.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Defective Bismuth Oxide as Effective Adsorbent for Arsenic Removal from Water and Wastewater

Balint

Bartoli

Jagdale

et al. 2021

Toxics

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In this work, we report solid-state synthetized defective Bi2O3 containing Bi(V) sites as effective and recyclable arsenic adsorbent materials. Bi2O3 was extensively characterized, and structure-related adsorption processes are reported. Both As(V) and As(III) species-adsorption processes were investigated in a wide range of concentrations, pH values, and times. The effect of several competing ions was also tested together with the adsorbent recyclability.

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Section: Methodssupporting

confidence: 85%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Defective Bismuth Oxide as Effective Adsorbent for Arsenic Removal from Water and Wastewater

Balint

Bartoli

Jagdale

et al. 2021

Toxics

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“…XRD of the composites showed increases in intensity of the peaks of bismuth hydroxide at 2θ = 6 , 13 , 24 , 27 , 31 , 33 , 39 , 42 , 47 , 52 , and 57 (JCPDS file no. 34 The average crystallite size of Bifilled PVA composites varied from 5 to 12 nm (Table I). 34 The average crystallite size of Bifilled PVA composites varied from 5 to 12 nm (Table I).…”

Section: Xrd Analysismentioning

confidence: 99%

Poly(vinyl alcohol)–bismuth oxide composites for X‐ray and γ‐ray shielding applications

Muthamma

Bubbly

Gudennavar

et al. 2019

J of Applied Polymer Sci

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Polymer composites, which are light in weight, cost effective, and less toxic, have potential applications in X-ray and γ-ray shielding and protection. In this work, we have explored the efficacy of poly(vinyl alcohol)-bismuth oxide composites as radiation shielding materials. Poly(vinyl alcohol) composites with different wt % (0-50) of bismuth were prepared by a simple solution casting technique. Structural and thermal characterization of these samples was carried out using Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy (SEM), and thermogravimetric analysis (TGA). TGA revealed the enhanced thermal stability of these composites. AC conductivity measurements and optical spectroscopy were used to analyze their electrical behavior. The composites showed low conductivity, and the energy gap obtained also showed their tendency to be insulators. The radiation attenuation properties were investigated using X-ray (5.895 and 6.490 keV) and γ-ray (59.54 and 662 keV) transmission measurements. The shielding efficiency of the composites increased with filler wt %. The 40 wt % composites exhibited mass attenuation coefficients of 122.68 and 93.02 cm 2 /g at photon energies of 5.895 and 6.490 keV, respectively, while the 50 wt % composites showed 1.57 and 0.092 cm 2 /g at photon energies of 59.54 and 662 keV, respectively. The effective atomic number quantifies the probability of interaction of radiation with matter. The effective atomic number of the composites calculated by the direct method was in good agreement with the theoretical value obtained from Auto-Zeff software.

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“…Generally, disinfectants (chlorine based) are used to kill pathogenic organisms present in water (Srivastav et al, 2020). Around 80%–90% rural public of India rely on the groundwater to meet their household essentials (Ranjan et al, 2020). The presence of heavy metals in drinking water may cause severe health problems in human beings (Srivastav et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Water quality assessment using synchrotron‐based TXRF

Garg

Tanta

Srivastav

et al. 2022

Water Environment Research

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The pollutants released from pharmaceutical, steel, paper, and battery industries into water cause stress on the natural ecosystems, may mix with soil and water, enter into human food chain, and hence cause irreparable damage to the biotic system. Hence, the appropriate monitoring of water along with determination of heavy metals is very important for human beings. In present paper, total reflection X‐ray fluorescence (TXRF) spectrometry technique is employed to determine the level of different contaminants in the water samples gathered from the various sites of an identified industrial area. Experimentation is carried out at Raja Ramanna Centre for Advanced Technology (RRCAT), Indore‐India by using TXRF, which is one the advance techniques of element determination up to ppb levels. The elemental concentration of Cl, K, Ca, Fe, Cu, Zn, Ga, Br, Sr, As, Pb, and Ni is quantified and compared with the limits established by the WHO (World Health Organization) and BIS (Bureau of Indian Standard) guidelines regarding drinking water use. The levels of the Pb, Fe, As, Ni, Cr, Co, and Mn exceeded the values suggested by WHO and BIS at some locations/sites. To better understand the situation, water quality parameters such as Water Quality Index (WQI), Heavy metal Pollution Index (HPI), Contamination Index (CI), Metal Enrichment Index (MEI), and Heavy Metal Evaluation Index (HEI) have also been assessed for all the sites close to industrial hub. Among all sites except at A3 and A6, WQI is found to be much greater than WHO and BIS established limit. Level of arsenic in the water at A1 location was found 73 ppb. However, lead metal in water was found to be very high at all the six studied locations, and at A1 location, it is found extremely high 2613 ppb. Therefore, water at A1 and A2 sites is found to be unfit for drinking. Practitioner Points Total reflection X‐ray fluorescence (TXRF) spectrometry technique is employed to determine the level of different contaminants in the water samples The elemental concentration of Cl, K, Ca, Fe, Cu, Zn, Ga, Br, Sr, As, Pb, and Ni is quantified and compared with the limits prescribed by the WHO Water Quality Index (WQI), Heavy metal Pollution Index (HPI), Contamination Index (CI), Metal Enrichment Index (MEI), and Heavy Metal Enrichment Index (MEI) have also been assessed for all the sites Water at some sites is found unfit for drinking purpose. Based on the observations, some remedial measures are suggested to reduce the level of water contaminants up to desired levels.

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A review of bismuth-based sorptive materials for the removal of major contaminants from drinking water

Cited by 33 publications

References 66 publications

Defective Bismuth Oxide as Effective Adsorbent for Arsenic Removal from Water and Wastewater

Defective Bismuth Oxide as Effective Adsorbent for Arsenic Removal from Water and Wastewater

Poly(vinyl alcohol)–bismuth oxide composites for X‐ray and γ‐ray shielding applications

Water quality assessment using synchrotron‐based TXRF

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