Recent Developments in Aqueous Arsenic(III) Remediation Using Biomass-Based Adsorbents

Navarathna, Chanaka; Alchouron, Jacinta; Liyanage, Achala S.; Herath, Amali; Wathudura, Pathum; Nawalage, Samadhi; Rodrigo, Prashan M.; Gunatilake, Sameera R.; Mohan, Dinesh; Pittman, Charles U.; Mlsna, Todd

doi:10.1021/bk-2020-1352.ch011

Cited by 4 publications

(2 citation statements)

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“…Most of these technologies have several short comings related to efficiency and cost [11][12][13][14]. Studies have shown that biomass-based adsorbents can be easily and reproducibly prepared, show excellent adsorption performance, and can be recovered and reused in subsequent runs [15,16]. The mechanisms involved in As adsorption by porous materials have been thoroughly 2 of 16 reviewed and established [15,17,18].…”

Section: Introductionmentioning

confidence: 99%

“…Studies have shown that biomass-based adsorbents can be easily and reproducibly prepared, show excellent adsorption performance, and can be recovered and reused in subsequent runs [15,16]. The mechanisms involved in As adsorption by porous materials have been thoroughly 2 of 16 reviewed and established [15,17,18]. Conventional adsorbents such as carbonaceous materials and fly ash, have exhibited a positive adsorption behaviour, but this is towards As(V) rather than As(III), which is highly toxic and mobile compared to As(V) [19,20].…”

Section: Introductionmentioning

confidence: 99%

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Adsorption of Arsenic on Fe-Modified Biochar and Monitoring Using Spectral Induced Polarization

Kirmizakis

Tawabini

Siddiq

et al. 2022

Water

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This work demonstrates the potential of Fe-modified biochar for the treatment of arsenic (As) simulated wastewater and the monitoring of adsorption in real-time. Specifically, we propose the utilization of date-palm leaves for the production of biochar, further modified with Fe in order to improve its adsorption function against inorganic pollutants, such as As. Both the original biochar and the Fe-modified biochar were used for adsorption of As in laboratory batch and column experiments. The monitoring of the biochar(s) performance and As treatment was also enhanced by using the spectral induced polarization (SIP) method, offering real-time monitoring, in addition to standard chemical monitoring. Both the original and the Fe-modified biochar achieved high removal rates with Fe-modified biochar achieving up to 98% removal of As compared to the 17% by sand only (control). In addition, a correlation was found between post-adsorption measurements and SIP measurements.

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