High performance NiFe layered double hydroxide for methyl orange dye and Cr(VI) adsorption

Lu, Yi‐Chun; Jiang, Bin; Fang, Liang; Ling, Faling; Gao, Jiemei; Wu, Fang; Zhang, Xihua

doi:10.1016/j.chemosphere.2016.03.015

Cited by 265 publications

(70 citation statements)

References 36 publications

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“…Another parameter ‘Adeq Precision’ represents the signal to noise ratio, and for a statistical model ‘Adeq Precision’ value of more than 4 is extremely desirable. The models developed for MO and EY dye removal (%) have shown ‘Adeq Precision’ of 50.239, and 54.010, respectively which indicates the noise is totally insignificant as compared to signal . One more important parameter is coefficient of variation (CV) for statistical data analysis.…”

Section: Resultssupporting

confidence: 50%

Enhanced adsorption performance of a novel Fe‐Mn‐Zr metal oxide nanocomposite adsorbent for anionic dyes from binary dye mix: Response surface optimization and neural network modeling

Singh

Kezo

Debnath

et al. 2017

Applied Organom Chemis

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A novel adsorbent, Fe‐Mn‐Zr metal oxide nanocomposite was synthesized and investigated for removal of methyl orange (MO) and eosin yellow (EY) dyes from binary dye solution. The magnetic nanocomposite has shown surface area of 143.01 m2/g and saturation magnetization of 15.29 emu/g. Optimization was carried out via response surface methodology (RSM) for optimizing process variables, and optimum dye removal of 99.26% and 99.55% were obtained for MO and EY dye, respectively with contact time 62 min, adsorbent dose 0.45 g/l, initial MO concentration 11.0 mg/l, and initial EY concentration 25.0 mg/l. A feed forward back propagation neural network model has shown better prediction ability than RSM model for predicting MO and EY dye removal (%). Adsorption process strictly follows Langmuir isotherm model, and enhanced adsorption capacities of 196.07 and 175.43 mg/g were observed for MO and EY dye, respectively due to synergistic effects of physicochemical properties of trimetal oxides. Surface adsorption and pore diffusions are the mechanisms involved in the adsorption as revealed from kinetic studies.

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Section: Resultssupporting

confidence: 50%

Enhanced adsorption performance of a novel Fe‐Mn‐Zr metal oxide nanocomposite adsorbent for anionic dyes from binary dye mix: Response surface optimization and neural network modeling

Singh

Kezo

Debnath

et al. 2017

Applied Organom Chemis

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“…0.25 < x <0.33); and m is the number of interlayer water molecules [136,168,170,172]. Due to the ubiquitous structural and physicochemical properties such as interlayer anion-exchange ability, easy accommodation of cations in the hydroxide layer and strong basicity, LDHs have attracted widespread attention as novel adsorbents in the treatment of industrial effluents and wastewaters [136,[168][169][170][171][172][173][174][175][176][177].…”

Section: Synthesis Of Layered Double Hydroxides From Slagsmentioning

confidence: 99%

“…Ling et al [175] observed high adsorption efficiencies for methyl red and Cr(VI) using Co/Fe LDHs (Co/Fe = 2:1, 3:1, and 4:1), and proposed the adsorption mechanism to involve external surface adsorption and interlayer anion exchange. Similarly, Lu et al [177] investigated the adsorption behaviour of methyl orange and Cr(VI) ions using Ni/Fe LDHs (Ni/Fe = 4:1, 3:1, 7:3, and 1:1). Maximum adsorption capacities of 205.76 mg g −1 methyl orange and 26.78 mg g −1 Cr(VI) were observed for Ni/Fe = 4:1.…”

Section: Synthesis Of Layered Double Hydroxides From Slagsmentioning

confidence: 99%

Ironmaking and Steelmaking Slags as Sustainable Adsorbents for Industrial Effluents and Wastewater Treatment: A Critical Review of Properties, Performance, Challenges and Opportunities

et al. 2020

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This paper critically discusses the structure, properties and applications of ironmaking and steelmaking slags and their silicate-based variants as low-cost adsorbents for removing cations and anions from industrial effluents and wastewater. Undoubtedly, the performance of slag-based adsorbents depends on their physical, chemical and phase chemical properties. The presence of crystalline phases, for example, has a significant effect on the adsorption capacity. However, despite their low cost and ubiquity, their chemical and geometric heterogeneity significantly affects the performance and applications of slag-based adsorbents. These challenges notwithstanding, the efficacy of slag-based adsorbents can be significantly enhanced through purposeful activation to increase the specific surface area and density of adsorption sites on the surfaces of adsorbent particles. The synthesis of functionalised adsorbents such as geopolymers, zeolites and layered double hydroxides from silicate and aluminosilicate precursors can also significantly increase the performance of slag-based adsorbents. In addition, the ability to stabilise the dissolved and/or entrained toxic metal species in stable phases in slags, either through controlled post-process fluxing or crystallisation, can significantly enhance the environmental performance of slag-based adsorbents. Most critical in the design of future slag-based adsorbents is the integration of the engineered properties of molten and solidified slags to the recovery and stabilisation of dissolved and/or entrained metals.

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“…where M 2+ is divalent metal cations, M 3+ is trivalent metal cations, A nÀ denotes interlayer inorganic or organic anion with a negative charge n, m is water molecule number in the interlayer, and x is M 3+ /(M 2+ + M 3+ ) ratio and normally between 0.2-0.4. In the past decade, LDH materials have received much attention as electrode materials, 14-17 adsorbents [18][19][20][21] and catalysts/catalyst precursors [22][23][24][25][26] because of their unique physical and chemical properties. Although the advances have been achieved for LDH, there are still very limited reports on LDH as a catalyst of PMS activation.…”

Section: Introductionmentioning

confidence: 99%

Efficient degradation of organic pollutants by peroxymonosulfate activated with MgCuFe-layered double hydroxide

Zhu

Zhang

et al. 2019

RSC Adv.

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High performance NiFe layered double hydroxide for methyl orange dye and Cr(VI) adsorption

Cited by 265 publications

References 36 publications

Enhanced adsorption performance of a novel Fe‐Mn‐Zr metal oxide nanocomposite adsorbent for anionic dyes from binary dye mix: Response surface optimization and neural network modeling

Enhanced adsorption performance of a novel Fe‐Mn‐Zr metal oxide nanocomposite adsorbent for anionic dyes from binary dye mix: Response surface optimization and neural network modeling

Ironmaking and Steelmaking Slags as Sustainable Adsorbents for Industrial Effluents and Wastewater Treatment: A Critical Review of Properties, Performance, Challenges and Opportunities

Efficient degradation of organic pollutants by peroxymonosulfate activated with MgCuFe-layered double hydroxide

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