A review on the use of lignocellulosic materials for arsenic adsorption

Maia, Luisa Cardoso; Soares, Liliane Catone; Gurgel, Leandro Vinícius Alves

doi:10.1016/j.jenvman.2021.112397

Cited by 63 publications

(8 citation statements)

References 97 publications

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“…96 The influence of NO 3 À and Cl À ions was relatively small because divalent anions were preferentially adsorbed over monovalent anions. 97 Figure 7(c) shows the As(V) adsorption amounts and removal percentages concerning the FS-BC-900 dose. As the dose of FS-BC-900 increased from 1.7 g/l to 8.3 g/l, the amount of adsorbed As(V) gradually decreased from 91.6 mg/g to 50.1 mg/g, whereas the removal percentage increased from 28.2% to 96.8%.…”

Section: Effect Of Solution Chemistry and Dose On As(v) Adsorptionmentioning

confidence: 99%

Valorization of Fenton sludge by pyrolysis as a green adsorbent for arsenate removal

Cho,

Kyu‐Kang,

Lee

et al. 2023

Applied Organom Chemis

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Significant quantities of Fenton sludge (FS) are produced during the treatment of industrial wastewater from the plating industry because of the removal of residual organic matter and color‐causing substances. This study proposes repurposing waste FS as a valuable resource to contribute to environmentally favorable remediation initiatives. This study focuses on producing Fenton sludge biochar (FS‐BC), which effectively removes As(V) from wastewater and offers a sustainable solution for wastewater treatment. Different FS‐BC samples were produced at various pyrolysis temperatures (300–900 °C), with FS‐BC‐900 exhibiting the greatest As(V) adsorption capacity. As(V) removal was primarily mediated by electrostatic attraction with iron oxide, and adsorption via inner‐sphere complex formation, as revealed by the XPS analysis. FS‐BC‐900 had a remarkable maximum As(V) adsorption capacity of 148.7 mg/g (initial concentration: 100–900 mg/l; reaction time: 96 h; pH 7.86), surpassing many other adsorbents reported in the literature. FS‐BC‐900 also demonstrated a high As(V) removal percentage, with 6.67 g/l of FS‐BC‐900 removing 96.8% of the As(V). Notably, the adsorption of As(V) by FS‐BC‐900 was affected by certain factors, including pH and carbonate presence. High pH and carbonate inhibited the ability of FS‐BC‐900 to adsorb As(V). This study presents a novel method for utilizing FS to combat As(V)‐contaminated water‐induced environmental contamination. This study contributes to eco‐friendly and sustainable wastewater treatment and As(V) remediation strategies by transforming waste into valuable resources.

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Section: Effect Of Solution Chemistry and Dose On As(v) Adsorptionmentioning

confidence: 99%

Valorization of Fenton sludge by pyrolysis as a green adsorbent for arsenate removal

Cho,

Kyu‐Kang,

Lee

et al. 2023

Applied Organom Chemis

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“…The majority of the published research on arsenic removal by adsorption focuses on arsenate with only a few investigations on arsenite mitigation in fixed bed columns (Maia et al 2021;Razzak et al 2021). Researchers developed a variety of adsorbents for the removal of arsenite from aqueous system, with varying degrees of effectiveness.…”

Section: )mentioning

confidence: 99%

Modeling of the As (III) adsorption using Fe impregnated polyethylene terephthalate char matrix: A statistical approach

Sawood¹,

Gautam²,

Mishra³

et al. 2022

Water Science and Technology

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The present research aimed to analyse the impact of economical Fe impregnated PET char (PETC-Fe) for adsorption of As (III) through series of column experiments. For an inlet arsenite concentration of 1,000 μg/L, PETC-Fe exhibits excellent uptake capacity of 1,892 μg/g. CCD (central composite design) in response surface methodology (RSM) was used to evaluate the influence of various process variables on the response function (breakthrough time) for optimization and assessment of interaction effects. The breakthrough time is more responsive to influent As (III) concentration and bed height than inlet flow rate, according to the perturbation plot. Adams–Bohart, Bed Depth Service Time model, and Thomas models were used to model the dynamics of the adsorption system. The BDST model suited the experimental data well in the early part of the breakthrough curve, but there were minor variations over the breakpoints. Despite the fact that the experimental values and the data sets estimated using the Adams–Bohart model followed a similar pattern, they differed slightly. The PETC-Fe was found to be a sustainable and highly economical adsorbent, with a desorption performance of more than 97 percent indicating the adsorbent's reusability. This adsorbent's excellent As (III) uptake capacity and regeneration performance imply that it might be used in industrial/domestic applications, and the information obtained could aid in future scaling up of the adsorption system.

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“…Além do carvão ativado, que é o adsorvente usualmente utilizado no tratamento das águas residuárias e de abastecimento público, outros adsorventes podem ser aplicados com o objetivo de remover os compostos farmacológicos e poluentes emergentes, tais como, argilas, sílicas gel, resíduos de produção agroindustrial, entre outros (BACCAR et al, 2012;SILVA, 2015;PAREDES et al, 2016;SARKER, et al, 2018;VIDOVIX et al, 2019;POLONIO et al, 2020;SOUZA, et al, 2021). Entre os trabalhos analisados encontraram-se artigos de revisão de literatura que abrangem diversos tipos de adsorventes para o tratamento de muitos poluentes industriais, como metais, corantes, arsênico, poluentes farmacêuticos, fenol, entre outros (SANTOS e AZEVEDO, 2019;FARIAS et al, 2022;FORGACS et al, 2004;MAIA et al, 2021;CHEN et al, 2022;RAJENDRAN et al, 2022;LIU e ZHANG, 2022;SULTANA et al, 2021). Esses trabalhos tentaram aglutinar essas informações em bloco apesar da grande variedade de metodologias de preparação dos adsorventes e diferenças nas variáveis do processo de adsorção (adsorvente, tempo de contato, temperatura, pH, concentração de adsorbato, tipo de reator), variáveis que afetam a eficiência da retirada desses poluentes o que dificulta as conclusões desses estudos, que são voltados mais para a tendência do estudo do processo de adsorção, sempre tentado buscar um adsorvente de custo menos elevado e efetivo para cada poluente, buscando a substituição posterior dos utilizados nos processos industriais.…”

Section: Poluentes Fármacosunclassified

Geociências, sociedade e sustentabilidade

2022

Geociências, Sociedade E Sustentabilidade

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A review on the use of lignocellulosic materials for arsenic adsorption

Cited by 63 publications

References 97 publications

Valorization of Fenton sludge by pyrolysis as a green adsorbent for arsenate removal

Valorization of Fenton sludge by pyrolysis as a green adsorbent for arsenate removal

Modeling of the As (III) adsorption using Fe impregnated polyethylene terephthalate char matrix: A statistical approach

Geociências, sociedade e sustentabilidade

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