Novel hierarchical composite adsorbent for selective lead(II) ions capturing from wastewater samples

Shahat, Ahmed; Hassan, Hassan M.A.; Azzazy, Hassan M. E.; El-Sharkawy, E.A.; Abdou, Hisham; Awual, Md. Rabiul

doi:10.1016/j.cej.2017.09.040

Cited by 216 publications

(26 citation statements)

References 103 publications

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“…After each condition measurement, the received data were further analysed, and the adsorption efficiency and the amount of RBV-5R adsorbed on the eggshell surface were calculated based on previously described methods, moreover isotherm, kinetic and diffusion models were calculated 4,12,29,64 .…”

Section: Optimization Of Initial Parametersmentioning

confidence: 99%

Adsorption of Remazol Brilliant Violet-5R Textile Dye from Aqueous Solutions by Using Eggshell Waste Biosorbent

Rápó

Aradi

Szabó

et al. 2020

Sci Rep

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Based on the well-known excellent adsorbent ability of chicken eggshells, the adsorptive capacity and mechanism of Remazol Brilliant Violet-5R (RBV-5R) dye by eggshell was investigated. Exploiting the high surface-area-to-volume ratio and porous structure of this natural adsorbent, the developed procedure showed to be useful for the efficient adsorption of RBV-5R dye from contaminated water. The protocol was thoroughly optimized by investigating the effect of the dye concentration, biomasscontaminated water ratio, particle size of the adsorbent, pH and temperature, as they are key factors in the efficiency of the dye removal process. The eggshell material was characterized by different types of microscopy techniques (stereo, polarization, SEM) as well as elemental analysis (element distribution mapping, EDX), Raman spectroscopy and BET-surface density measurements. EDX, FTIR and Raman spectroscopy proved the presence of the adsorbed dye on the surface of the biomaterial. It was shown that under optimal conditions, the environmentally friendly and inexpensive eggshell could be a reliable adsorbent for Remazol dye removal from wastewater. One of today's global challenges is to supply healthy, pure and consumable water to safeguard public health since a growing variety of toxic organic and inorganic pollutants are occurring in water bodies 1. According to the 2015 World Water Development Report, the demand for water around the world will increase by 55% over the next 15 years, indicating that the Earth's current water supplies can cover only 60% of our future needs by 2030 2. With rapid industrial development, the overexploitation of natural resources, industrial and natural disasters, the number of polluted water sites contaminated with heavy metals 3-6 , radioactive elements 7,8 , nitrite 9,10 , phosphate 11,12 , pesticides 13 , dyes 14-16 , etc., are continuously increasing. Dyes are widely utilized in the paper, pulp, paint and textile industries, with a large amount of water demand for washing and cleaning purposes. Based on the Colour Index, currently, more than 10 000 various types of synthetic dyes are available worldwide. In 2014, more than 1.5 million tons of dyes were produced annually. Fifty percent of these dyes are used by the textile industry, where during the colouring process, 1-10% of these dyes are discharged 17,18. Due to the high solubility and low biodegradability of these compounds, dye-polluted industrial wastewater is one of the most difficult types of wastewater to clean. Remazol Brilliant Violet-5R (RBV-5R), a reactive dye, is used to colour cellulosic fibres. After the colorization process, approximately 10-50% of the initial dye load remains unused 19. Biosorption is a promising method for removing persistent compounds, i.e., non-biodegradable compounds. Recently, various materials such as nanocomposites, households and industrial wastes have been used as biosorbents for inorganic and organic contaminant removal 5,11,20,21. Coconut residual fibres 22 , low-cost activated charcoal from to...

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Section: Optimization Of Initial Parametersmentioning

confidence: 99%

Adsorption of Remazol Brilliant Violet-5R Textile Dye from Aqueous Solutions by Using Eggshell Waste Biosorbent

Rápó

Aradi

Szabó

et al. 2020

Sci Rep

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“…Poor water quality and unsustainable supply limits national economic development and can lead to adverse health and economic impacts. Nanotechnology is a key emerging technology with significant potential for innovation in water treatment [1] (e.g., using advanced materials like nanostructured photocatalysts with surface chemistries, band-edge energies and bandgaps that enable selective binding and degradation of targeted contaminants using sunlight [2,3]); using nanostructured carbon-based materials with high electronic conductivity and hierarchical porous structure as electrodes for electrosorption/capacitive deionization to enhance desalination performance [4,5]; engineering the morphology and surface area of electrodes through the use of nanotube arrays or three-dimensional macroporous structures to improve kinetics and mass transfer in electrochemical oxidation [6][7][8][9]; functionalizing the surface of nanomaterials by organic ligands for the efficient detection and adsorption of organic or inorganic materials from contaminated water [10][11][12][13][14][15][16][17][18][19][20], and controlling the size of magnetic nanoparticles to enhance superparamagnetism for low-energy separation and recovery with magnets [21]. The introduction of such advanced materials in water treatment requires an assessment of the potential environmental and human health risks of these materials.…”

Section: Introductionmentioning

confidence: 99%

Release of Ag/ZnO Nanomaterials and Associated Risks of a Novel Water Sterilization Technology

Pang

Mackevica

Tian

et al. 2019

Water

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For water sterilization, a highly effective system utilizing electrophoresis and the antimicrobial properties of Ag/ZnO nanomaterials has been developed. However, the key component of this system, a sterilization carbon cloth containing Ag/ZnO nanomaterials, has not been evaluated with respect to the potential environmental and human health risks associated with the nanomaterials released. In this paper, a recirculation flow system and methodology were developed to study the release of Ag and ZnO during water treatment. Our study showed that the released silver nanoparticles and dissolved Ag from the carbon cloth were 50 µg/L and 143 µg/L in the United States Environmental Protection Agency (EPA) medium, respectively. The release of dissolved Zn in the EPA medium was 33 µg /L. The results indicate that the release of dissolved and nanoparticulate silver from the sterilization carbon cloth exceeded acceptable risk levels in the aquatic environment. However, if the sterilization carbon cloth was pre-washed two days prior to use, the concentration of Ag was below the drinking water limit of 0.1 mg/L. Our study provides important exposure data for a novel water sanitation technology for real-world application in waste water and drinking water treatment, and aid in assuring its safe use.

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“…S7A , the adsorption reached equilibrium when the adsorbent concentration was 5 mg mL −1 (consistent with that in blood condition). Adsorption isotherm and adsorption kinetics models are commonly applied for describing the adsorption behavior of the metal ion [ [74] , [75] , [76] ]. Compared with Langmuir equation (R 2 = 0.981), the removal process was more consistent with Freundlich equation (R 2 = 0.994, n = 0.887 < 1) ( Figs.…”

Section: Resultsmentioning

confidence: 99%

Nanomotor-based adsorbent for blood Lead(II) removal in vitro and in pig models

Wang

Bao

Yan

et al. 2021

Bioactive Materials

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Blood lead (Pb(II)) removal is very important but challenging. The main difficulty of blood Pb(II) removal currently lies in the fact that blood Pb(II) is mainly complexed with hemoglobin (Hb) inside the red blood cells (RBCs). Traditional blood Pb(II) removers are mostly passive particles that do not have the motion ability, thus the efficiency of the contact between the adsorbent and the Pb(II)-contaminated Hb is relatively low. Herein, a kind of magnetic nanomotor adsorbent with movement ability under alternating magnetic field based on Fe 3 O 4 nanoparticle modified with meso-2, 3-dimercaptosuccinic acid (DMSA) was prepared and a blood Pb(II) removal strategy was further proposed. During the removal process, the nanomotor adsorbent can enter the RBCs, then the contact probability between the nanomotor adsorbent and the Pb(II)-contaminated Hb can be increased by the active movement of nanomotor. Through the strong coordination of functional groups in DMSA, the nanomotor adsorbent can adsorb Pb(II), and finally be separated from blood by permanent magnetic field. The in vivo extracorporeal blood circulation experiment verifies the ability of the adsorbent to remove blood Pb(II) in pig models, which may provide innovative ideas for blood heavy metal removal in the future.

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Novel hierarchical composite adsorbent for selective lead(II) ions capturing from wastewater samples

Cited by 216 publications

References 103 publications

Adsorption of Remazol Brilliant Violet-5R Textile Dye from Aqueous Solutions by Using Eggshell Waste Biosorbent

Adsorption of Remazol Brilliant Violet-5R Textile Dye from Aqueous Solutions by Using Eggshell Waste Biosorbent

Release of Ag/ZnO Nanomaterials and Associated Risks of a Novel Water Sterilization Technology

Nanomotor-based adsorbent for blood Lead(II) removal in vitro and in pig models

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