Biochar modification to enhance arsenic removal from water: a review

Tian, Li; Li, Hao; Chang, Zhaofeng; Ni, Liang; Wu, Min; Pan, Bo

doi:10.1007/s10653-022-01462-y

Cited by 7 publications

(2 citation statements)

References 106 publications

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“…Physical adsorption: During this process, the heavy metals accumulate on the adsorbent's surface and within its holes. The shape, pore size, and surface area of the adsorbent substantially impact the adsorption capacity because of the surface adhesion of the metal ions [125]. For instance, more micropores and mesopores promote and facilitate contaminant diffusion, which speeds up the adsorption rates [28,126].…”

Section: Mechanism Of Heavy Metal Removal By Adsorptionmentioning

confidence: 99%

A comprehensive review of the application of modified carbon nanotubes (CNTs) for the removal of metals from wastewater

Abdullah,

Rasheed,

Adnan

et al. 2023

Mater. Res. Express

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Carbon nanotubes (CNTs), a type of carbonaceous material, have extremely distinctive qualities in terms of tensile strength, heat stability, electrical conductivity, catalysis, and adsorption. These properties rely on structure, length, and thickness. Carbon nanotube and metal oxide combination have been successfully used over the past few decades to create carbon nanomaterials with extraordinary features. The current study offers an outline of the developments in the theory, procedures, and chemical modification of CNT with metals or polymers. This review presents different synthesis methods of functionalized CNTs along with their properties and factors affecting their adsorption capacity. In addition, it explains the role of different functionalized CNTs in removing different metals like Pb2+, Cd2+, Cr3+, Cr6+, Ni2+, Tl+3, and Hg2+ from wastewater. The adsorption capacity of these modified CNTs is in the range of 130-180 mg/g. This review offers an essential understanding of the methods for creating multifunctional nano-hybrids for a variety of applications and future prospects of the use of nanomaterials for environmental remediation.

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Section: Mechanism Of Heavy Metal Removal By Adsorptionmentioning

confidence: 99%

A comprehensive review of the application of modified carbon nanotubes (CNTs) for the removal of metals from wastewater

Abdullah,

Rasheed,

Adnan

et al. 2023

Mater. Res. Express

View full text Add to dashboard Cite

show abstract

“…At present, several removal techniques have been proposed, including photodecomposition [5], biodegradation [11], and adsorption [11,12]. Among these methods, adsorption shows the advantages of high efficiency and low cost [13]. Various natural and synthetic adsorbents have been studied for arsenic sorption from water bodies [14].…”

Section: Introductionmentioning

confidence: 99%

Adsorption Behavior of Organoarsenicals over MnFe2O4-Graphene Hybrid Nanocomposite: The Role of Organoarsenic Chemical Structures

Gu,

Zhang,

et al. 2023

Materials

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As a kind of emerging contaminant, organoarsenic compounds have drawn wide concern because of their considerable solubilities in water, and the highly toxic inorganic arsenic species formed during their biotic and abiotic degradation in the natural environment. Thus, the effective removal and studying of the adsorption mechanism of organoarsenic compounds are of significant urgency. In this work, MnFe2O4 and MnFe2O4/graphene were prepared through a facile solvothermal method. From the results of the Transmission Electron Microscope (TEM) characterization, it can be found that MnFe2O4 nanoparticles were uniformly distributed on the surface of the graphene. And the specific surface area of the MnFe2O4/graphene was about 146.39 m2 g−1, much higher than that of the MnFe2O4 (86.15 m2 g−1). The interactions between organoarsenic compounds and adsorbents were conducted to study their adsorption behavior and mechanism. The maximum adsorption capacities of MnFe2O4/graphene towards p-arsanilic acid (p-ASA) and roxarsone (ROX) were calculated to be 22.75 and 30.59 mg g−1. Additionally, the ionic strength, negative ions, and humus were introduced to investigate the adsorption performance of organoarsenic compounds. Electrostatic adsorption and surface complexation are the primary adsorption mechanisms on account of X-ray photoelectron spectroscopy (XPS) and the Fourier-transform infrared spectroscopy (FT-IR) analysis. This research extends the knowledge into studying the interaction between organoarsenic species and hybrid nanomaterials in the natural environment.

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Environmental implications of residual pyrogenic carbonaceous materials from incomplete biomass combustion: a review

Chang,

Shen,

Jiang

et al. 2024

Carbon Res.

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Incomplete biomass burning produces considerable amounts of pyrogenic carbonaceous materials (PCMs), which are widely distributed in environmental matrices. Those PCMs undergo different environmental processes and consequently have non-negligible impacts on the global carbon cycle, ecological functions and environmental security. This review provided a comprehensive review of qualitative and quantitative methods, carbon sequestration capabilities and other ecosystem functions of PCMs. In addition, the generation mechanism and environmental health risks of emerging contaminants, especially persistent free radicals (EPFRs) and polycyclic aromatic hydrocarbons (PAHs) associated with PCMs were discussed. The results showed that the coexisting kerogen and coal may interfere with PCMs quantification, and that estimates of PCMs pools vary significantly due to methodological differences, natural variability and limited spatial coverage. The input of PCMs into soils increased soil carbon sequestration through direct carbon contribution and indirect negative priming effect on native SOC. In addition, PCMs can improve soil structure and properties and immobilize/degrade pollutants, which is conducive to the restoration of soil ecology. However, various contaminants associated with PCMs may threaten ecological safety, and thus their formation mechanisms and toxicological pathway to living organisms need to be further investigated. The development of standards for PCMs identification and quantification, application protocols of PCMs in pilot scale, and assessing the effects of PCMs on soil health deserve extended studies.

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Biochar modification to enhance arsenic removal from water: a review

Cited by 7 publications

References 106 publications

A comprehensive review of the application of modified carbon nanotubes (CNTs) for the removal of metals from wastewater

A comprehensive review of the application of modified carbon nanotubes (CNTs) for the removal of metals from wastewater

Adsorption Behavior of Organoarsenicals over MnFe2O4-Graphene Hybrid Nanocomposite: The Role of Organoarsenic Chemical Structures

Environmental implications of residual pyrogenic carbonaceous materials from incomplete biomass combustion: a review

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