Removal of fluoride from drinking water using modified ultrafine tea powder processed using a ball-mill

Cai, Hao; Xu, Lingyun; Chen, Guijie; Peng, Chuanyi; Ke, Fei; Liu, Zhengquan; Li, Daxiang; Zhang, Zhengzhu; Wan, Xiaochun

doi:10.1016/j.apsusc.2016.03.005

Cited by 72 publications

(7 citation statements)

References 56 publications

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“…First, the bulk solid size is reduced . This size reduction can increase the surface-to-volume ratio and create new surface properties that are desirable for water treatment. − Xiao and co-workers reported N-containing bone biochar (MBC) through pyrolysis (600 °C) with the assistance of ball milling. The SSA of the MBC (313 m 2 g –1 ) was much larger than that produced without ball milling (53 m 2 g –1 ), greatly increasing the adsorption capacities toward Cd(II), Pb(II), and Cu(II).…”

Section: Methods For Nanomaterials Adsorbent Synthesismentioning

confidence: 99%

“…Operating parameters, including the milling time, rotatory speed, and size of the milling balls and atmosphere (with or without oxygen), can affect the SSA, functional groups, or phase composition of NAs. − ,− For example, the SSA can be improved by reducing the particles size after a certain grinding time but may shrink due to the agglomeration of particles because of the high surface energy. ,,, The agglomeration phenomenon can be effectively avoided by introducing appropriate surfactants, which has been comprehensively reviewed by Ullah and co-workers . Hence, it is of great importance to precisely control these parameters to obtain NAs with better adsorption performances.…”

Section: Methods For Nanomaterials Adsorbent Synthesismentioning

confidence: 99%

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Review of Advances in Engineering Nanomaterial Adsorbents for Metal Removal and Recovery from Water: Synthesis and Microstructure Impacts

Luo

et al. 2021

ACS EST Eng.

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Adsorption is widely applied in both potable and municipal or industrial wastewater treatments process. Nanomaterial adsorbents (NAs) have emerged as efficient candidates to remove toxic metals from water. However, scalable application of NAs beyond bench-scale material discovery and translation to full scale deployment has been limited but essential to realize the potential NAs offer for environmental remediation. In this critical review, we summarize, discuss, and compare various NA synthesis methods and assess their scalability to supply materials for full-scale applications. Moreover, as the importance of the microstructure of nanomaterial itself has been recognized in recent years, we also scrutinize the effect of NAs structures including crystal facets, phases, and tunability of active sites (e.g., functional groups) on metal adsorption. The review concludes with prioritizing research needs that balance large-scale production costs and feasibility to produce desired properties of NAs at commercial scale quantities. Meanwhile, an NAs evaluation protocol (e.g., life cycle costing (LCC) and life cycle assessment (LCA)) should be established to test NAs at the material discovery stage that considers both adsorption capacity and mass transfer kinetics and perform long-term testing (e.g., recovery) of NA real applications.

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Section: Methods For Nanomaterials Adsorbent Synthesismentioning

confidence: 99%

Section: Methods For Nanomaterials Adsorbent Synthesismentioning

confidence: 99%

Review of Advances in Engineering Nanomaterial Adsorbents for Metal Removal and Recovery from Water: Synthesis and Microstructure Impacts

Luo

et al. 2021

ACS EST Eng.

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“…The adsorption data were analyzed using Langmuir, Freundlich, Temkin, Redlich-Peterson and Sips isotherm [58]. Cai et al [40] studied the Zr-loaded tea powder which is best fitted with the Langmuir isotherm model based on monolayer adsorption of adsorbate onto the adsorbent surface with the limited number of binding sites. Abu Bakar et al [58] studied modified Palm Kernel Shell which is fitted with Freundlich, Redlich-Peterson and Sips isotherm.…”

Section: Adsorption Isothermsmentioning

confidence: 99%

Removal of Fluoride from Aqueous Solution Using Biomass-Based Adsorbents: A Review

Aryal

Poudel

Gautam

et al. 2019

J. Nepal Chem. Soc.

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Various separation techniques have been successful for the removal of fluoride from aqueous solution. In this review, an extensive list of various biomass-based adsorbents from literature has been explored and their adsorption capacities under different conditions for the removal of fluoride available in the literature to date are presented. Several adsorbents have shown good adsorption capacities; however, modified biomass had shown excellent adsorption capacities compared to commercial materials. This paper reviews the fluoride uptake capacities of biomass materials and their modified forms as adsorbents against different experimental limits.

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“…Among the above methods, fluoride adsorption on adsorbents is attracting increasing attention due to its advantages of convenient design and operation, and low cost [12]. Different types of adsorbents, such as metal adsorbents [13], carbon adsorbents [14], carbon materials [15], natural materials [16], and biosorbents [17], have been used to remove fluoride from water. MOFs have also been used as new adsorbents for fluoride adsorption due to their surface functional groups and ordered atomic arrangement [18].…”

Section: Introductionmentioning

confidence: 99%

HaP/SBA-3 Nanostructured Composite to Remove Fluoride Effectively from Contaminated Water

Anunziata¹

2021

RDMS

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Highly ordered pore mesoporous silica composites, like SBA-3 and hydroxyapatite (HaP) nanocrystals, characterized by X-ray diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM) and textural properties, were successfully applied to remove fluoride from contaminated water. The proposed procedure to prepare HaP/SBA-3 was successful, which acts as supports to anchor the HaP crystals, in nanometer-scale (<2nm), with higher fluoride retention from contaminated water. The free OH-groups of HaP nanocrystals, within the host, facilitated the high-performance fluoride trapping. The fluoride retention activity was much higher than that of pure HaP and the composites HaP/SBA-15 and HaP/MCM-41.

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Removal of fluoride from drinking water using modified ultrafine tea powder processed using a ball-mill

Cited by 72 publications

References 56 publications

Review of Advances in Engineering Nanomaterial Adsorbents for Metal Removal and Recovery from Water: Synthesis and Microstructure Impacts

Review of Advances in Engineering Nanomaterial Adsorbents for Metal Removal and Recovery from Water: Synthesis and Microstructure Impacts

Removal of Fluoride from Aqueous Solution Using Biomass-Based Adsorbents: A Review

HaP/SBA-3 Nanostructured Composite to Remove Fluoride Effectively from Contaminated Water

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