Simultaneous removal of Zn2+ and p-nitrophenol from wastewater using nanocomposites of montmorillonite with alkyl-ammonium and complexant

Wang, Guifang; Xiao, Huizhen; Zhu, Jinliang; Zhao, Hongyuan; Liu, Kun; Ma, Shengqian; Zhang, Shuai; Komarneni, Sridhar

doi:10.1016/j.envres.2021.111496

Cited by 18 publications

(7 citation statements)

References 106 publications

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“…The N2 adsorption-desorption isotherms and specic surface area of the MgCo-3D hydrotalcite nanospheres were evaluated using automatic volumetric adsorption equipment (Micromeritics, ASAP2460, USA). The zeta potentials of the MgCo-3D hydrotalcite nanosphere surfaces at different pH values (3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13) were measured using a laser particle size analyzer (McChik, Microtrac S3500SI, USA).…”

Section: Characterizationmentioning

confidence: 99%

“…4,5 Among them, the adsorption method is widely used because it is safe, efficient, and operationally simple. 6,7 Layered double hydroxides (LDHs) are suitable for wastewater treatment. Sun 8 and Balbino 9 synthesized some twodimensional (2D) layered hydrotalcites for high adsorption capacity of 4-NP, however, they have certain limitations.…”

Section: Introductionmentioning

confidence: 99%

“… 4,5 Among them, the adsorption method is widely used because it is safe, efficient, and operationally simple. 6,7 …”

Section: Introductionmentioning

confidence: 99%

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Removal of p-nitrophenol from simulated sewage using MgCo-3D hydrotalcite nanospheres: capability and mechanism

Gao

Yang

2022

RSC Adv.

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Section: Characterizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Removal of p-nitrophenol from simulated sewage using MgCo-3D hydrotalcite nanospheres: capability and mechanism

Gao

Yang

2022

RSC Adv.

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“…4-NP is commonly used in chemical industry (Karami and Zeynizadeh 2019) and pharmaceuticals (Anh and Doong 2018). Cr(VI) is commonly used in electroplating, textiles, leather (Zhao et al 2021a) and dyes (Guifang Wang et al 2021). 4-NP and Cr(VI) are mutagenic, carcinogenic, highly toxic (Bahrami et al 2020), and difficult to degrade.…”

Section: Introductionmentioning

confidence: 99%

Cellulose-g-tetraethylenepentamine dual-function imprinted polymers selectively and effectively adsorb and remove 4-nitrophenol and Cr(VI)

Lang

et al. 2022

Cellulose

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A cellulosic material has been synthesized that could efficiently and selectively adsorb organic and inorganic contaminants from aqueous solutions without interference from competing adsorption sites. Cellulose-graft-tetraethylenepentamine molecular imprinted polymer (C-TEPA-MIP) was synthesized by using 4-nitrophenol (4-NP) as the template. The C-TEPA-MIP adsorbent could adsorb 4-NP and Cr(VI) simultaneously and selectively, without being affected by the competitive adsorption sites of each of these pollutants. The adsorption of 4-NP was predominantly due to the imprinted sites of 4-NP in C-TEPA-MIP that were located inside of the adsorbent, whereas that of Cr(VI) was primarily due to the amine groups of TEPA found on the surface of the adsorbent. Compared with the non-imprint polymer synthesized without the template, C-TEPA-MIP showed higher selectivity for both 4-NP and Cr(VI) in unitary and binary systems. In addition, C-TEPA-MIP exhibited good stability and recyclability for 4-NP, which makes it a promising candidate material for applications concerning wastewater treatment. Graphical abstract

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“…Adsorption using adsorbents is a promising method because it has been reported to have high efficiency, a simple operating design, low-cost implementation, and it enables the removal of substances even at extremely low concentrations [14][15][16][17]. Various adsorbents have been developed or improved for selective adsorption of heavy metal ions in wastewater, such as polymer/metallic composites [18], zeolites and silica-based materials [19][20][21][22][23][24], carbon nanotubes [25], and activated carbon that was used in lab-scale tests [26] or was effectively adopted in water treatment innovation, namely, in a passive in-situ treatment system [27]. In addition to the synthetic adsorbents, natural biomass [28] and agricultural wastes [29] were also used as biosorbents to adsorb metal ions.…”

Section: Introductionmentioning

confidence: 99%

Amine-Modified Small Pore Mesoporous Silica as Potential Adsorbent for Zn Removal from Plating Wastewater

et al. 2022

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The removal of Zn from wastewater generated from the Zn-based electroplating manufacturing process is essential because the regulation limit of Zn concentration in wastewater is becoming stricter in Japan. However, achieving this through conventional methods is difficult, especially for small and medium enterprises in the plating industry. Therefore, a suitable Zn-removal method with a low cost but high performance and Zn selectivity is required. The application of adsorbents is one possible solution. Mesoporous silica (MS) is a well-known adsorbent with controllable pore size, high specific surface area (SSA), high acid resistance, and ease of surface modification. In this study, we modified the surfaces of MSs with different initial pore sizes by amino groups and investigated their Zn removal performances. The effect of pore size on amine modification using (3-aminopropyl)triethoxysilane and on adsorption performance in a single system was investigated along with Zn adsorption selectivity in the Zn–Ni binary system. Amine-modified MS prepared from MS with an initial pore size of 1.9 nm showed drastically lower performance compared to those prepared from MS with an initial pore size larger than 2.8 nm. Zn-selectivity in the Zn–Ni binary system, containing equal amounts of Zn and Ni, was found to reach a maximum of 21.6 when modifying MS with an initial pore size of 2.8 nm.

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Simultaneous removal of Zn2+ and p-nitrophenol from wastewater using nanocomposites of montmorillonite with alkyl-ammonium and complexant

Cited by 18 publications

References 106 publications

Removal of p-nitrophenol from simulated sewage using MgCo-3D hydrotalcite nanospheres: capability and mechanism

Removal of p-nitrophenol from simulated sewage using MgCo-3D hydrotalcite nanospheres: capability and mechanism

Cellulose-g-tetraethylenepentamine dual-function imprinted polymers selectively and effectively adsorb and remove 4-nitrophenol and Cr(VI)

Amine-Modified Small Pore Mesoporous Silica as Potential Adsorbent for Zn Removal from Plating Wastewater

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