Zirconium hydroxide nanoparticle encapsulated magnetic biochar composite derived from rice residue: Application for As(III) and As(V) polluted water purification

Peng, Yaru; Azeem, Muhammad; Li, Ronghua; Xing, Libin; Li, Yimeng; Zhang, Yichen; Guo, Zhiqiang; Wang, Quan; Ngo, Huu Hao; Qu, Guangzhou; Zhang, Zengqiang

doi:10.1016/j.jhazmat.2021.127081

Cited by 99 publications

(19 citation statements)

References 52 publications

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“…All these results confirm the strong bonding of As with Zr and Fe species via the formation of inner sphere As–O–Fe in FeB and FeCl 3 B BCs; 129 and As–O–Fe and As–O–Zr complexation was evident in the Zr–FeCl 3 B BC. Previous studies from Peng et al (2022) 121 and Fang et al (2021) 130 also supported this.…”

Section: Results and Discussionsupporting

confidence: 67%

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Adsorption–Desorption Behavior of Arsenate Using Single and Binary Iron-Modified Biochars: Thermodynamics and Redox Transformation

et al. 2022

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Arsenic (As) is a dangerous contaminant in drinking water which displays cogent health risks to humans. Effective clean-up approaches must be developed. However, the knowledge of adsorption–desorption behavior of As on modified biochars is limited. In this study, the adsorption–desorption behavior of arsenate (As V ) by single iron (Fe) and binary zirconium–iron (Zr–Fe)-modified biosolid biochars (BSBC) was investigated. For this purpose, BSBC was modified using Fe-chips (FeBSBC), Fe-salt (FeCl 3 BSBC), and Zr–Fe-salt (Zr–FeCl 3 BSBC) to determine the adsorption–desorption behavior of As V using a range of techniques. X-ray photoelectron spectroscopy results revealed the partial reduction of pentavalent As V to the more toxic trivalent As III form by FeCl 3 BSBC and Zr–FeCl 3 BSBC, which was not observed with FeBSBC. The Langmuir maximum As V adsorption capacities were achieved as 27.4, 29.77, and 67.28 mg/g when treated with FeBSBC (at pH 5), FeCl 3 BSBC (at pH 5), and Zr–FeCl 3 BSBC (at pH 6), respectively, using 2 g/L biochar density and 22 ± 0.5 °C. Co-existing anions reduced the As V removal efficiency in the order PO 4 3– > CO 3 2– > SO 4 2– > Cl – > NO 3 – , although no significant inhibitory effects were observed with cations like Na + , K + , Mg 2+ , Ca 2+ , and Al 3+ . The positive correlation of As V adsorption capacity with temperature demonstrated that the endothermic process and the negative value of Gibbs free energy increased (−14.95 to −12.47 kJ/mol) with increasing temperature (277 to 313 K), indicating spontaneous reactions. Desorption and regeneration showed that recycled Fe-chips, Fe-salt, and Zr–Fe-salt-coated biochars can be utilized for the effective removal of As V up to six-repeated cycles.

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Section: Results and Discussionsupporting

confidence: 67%

“…The XPS spectra revealed that the second peak produced at 185.45 eV in the Zr 3d 3/2 region corresponds to the Zr–O 2 , (Figure B). Lewis acid–base definition classified Zr to be more basic than Fe species (Fe 2+ or Fe 3+ ) which also enables Zr to function as a reductant.…”

Section: Results and Discussionmentioning

confidence: 99%

Adsorption–Desorption Behavior of Arsenate Using Single and Binary Iron-Modified Biochars: Thermodynamics and Redox Transformation

et al. 2022

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“…Therefore, the adsorption performance of biochar for anionic pollutants can be improved by increasing the density of specific active sites on the biochar surface through rational design and fabrication (Li et al 2018a). Recently, some biomaterials (chitosan) and metal oxides or hydroxides of Fe, Al, La, Mg, Zr, and Ca have been successfully introduced into biochar, and the resulting metal-biochar engineered composites showed strong affinities towards anionic pollutants present in wastewater (Li et al 2018a;Zhang and Gao 2013;Imran et al 2021;Iqbal et al 2021;Peng et al 2022;Wang et al 2022;Zhang et al 2022). Common methods for preparing the engineered metal-biochar composites include direct pyrolysis of highly metal-enriched biomass, postco-deposition of metals with biochar, electric fieldassisted biomass pyrolysis, mechanical ball-milling of biochar with metallic minerals, and pyrolysis of biomass impregnated with metal salts (Jung and Ahn 2016;Li et al 2018a).…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of MgO hybrid biochar and its mechanism for high efficient recovery of phosphorus from aqueous media

Fang

Ali

Gao

et al. 2022

Biochar

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Conversion of organic waste into engineered metal-biochar composite is an effective way of enhancing biochar’s efficiency for adsorptive capture of phosphorus (P) from aqueous media. Thus, various strategies have been created for the production of metal-biochar composites; however, the complex preparation steps, high-cost metal salt reagent application, or extreme process equipment requirements involved in those strategies limited the large-scale production of metal-biochar composites. In this study, a novel biochar composite rich in magnesium oxides (MFBC) was directly produced through co-pyrolysis of magnesite with food waste; the product, MFBC was used to adsorptively capture P from solution and bio-liquid wastewater. The results showed that compared to the pristine food waste biochar, MFBC was a uniformly hybrid MgO biochar composite with a P capture capacity of 523.91 mg/g. The capture of P by MFBC was fitted using the Langmuir and pseudo-first-order kinetic models. The P adsorptive capture was controlled by MgHPO4 formation and electrostatic attraction, which was affected by the coexisting F− and CO32− ions. MFBC could recover more than 98% of P from the solution and bio-liquid wastewater. Although the P-adsorbed MFBC showed very limited reusability but it can be substituted for phosphate fertiliser in agricultural practices. This study provided an innovative technology for preparing MgO-biochar composite against P recovery from aqueous media, and also highlighted high-value-added approaches for resource utilization of bio-liquid wastewater and food waste. Graphical Abstract

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“…Even zero-valent iron NPs (ZVI NPs) are gaining huge demand in the water remediation methods because of their characterization of heavy metal removal. It also possesses some antimicrobacterial properties [16].…”

Section: Role Of Phytonanotechnology In Removal Of Water Contaminationmentioning

confidence: 99%

Role of Phytonanotechnology in the Removal of Water Contamination

Gole

John

Krishnamoorthy

et al. 2022

Journal of Nanomaterials

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Environmental pollution is expedited by the rapid increase in population, urbanization, industrialization, and growth in the global economy. Water contamination is accelerated by the incautious disposal of wastes into water bodies. The need of the hour is to develop novel, ergonomic, subsidized, and reproducible technologies that assist in the remediation of such wastes that require minimal human intervention, preserve the quality of water, and are eco-friendly. Phytonanotechnology is emerging as a promising strategy, characterized by the biosynthesis of metallic nanomaterials and nanoparticles (NPs) using plant-based sources. Conventional remediation technologies like adsorptive, reactive, in situ, ex situ, and open fabrication of phytogenic magnetic NPs (PMNPs) have already been established in scientific literature. A keen understanding of building material platforms, fabricating and performance-optimizing are required to develop nanomaterials capable of addressing environmental issues. Furthermore, their antimicrobial activity, biodegradability and biocompatibility, optoelectronic properties, low toxicity, availability, energy efficiency, and versatility have been utilized efficiently.

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Zirconium hydroxide nanoparticle encapsulated magnetic biochar composite derived from rice residue: Application for As(III) and As(V) polluted water purification

Cited by 99 publications

References 52 publications

Adsorption–Desorption Behavior of Arsenate Using Single and Binary Iron-Modified Biochars: Thermodynamics and Redox Transformation

Adsorption–Desorption Behavior of Arsenate Using Single and Binary Iron-Modified Biochars: Thermodynamics and Redox Transformation

Preparation and characterization of MgO hybrid biochar and its mechanism for high efficient recovery of phosphorus from aqueous media

Role of Phytonanotechnology in the Removal of Water Contamination

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