Regeneration of Magnetic Adsorbents Saturated by Organic Pollutants

Xiao, Ye; Hill, Josephine M.

doi:10.1007/978-3-030-64092-7_9

Cited by 2 publications

(3 citation statements)

References 158 publications

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“…For example, a higher pH value usually favors the desorption of anionic organic contaminants, , since the increase of pH could increase electrostatic repulsive forces between the adsorbed anionic organic compounds and AC surfaces . Similarly, an increase in temperature could also facilitate the desorption of the pollutants due to desorption is endothermic. , The ROS degradation process, which follows desorption, is important because ROS reacts with the desorbed contaminants to degrade or mineralize them, thereby preventing their readsorption and ensuring effective contaminant removal . Various ROS, such as hydroxyl radicals ( • OH), sulfate radicals (SO 4 • – ), singlet oxygen ( 1 O 2 ), and superoxide radicals (O 2 • – ) are involved in the degradation process.…”

Section: Overview Of Ac Regeneration Methods Via Aopsmentioning

confidence: 99%

“…This scenario presents a more accurate representation of regeneration efficiency. Conversely, when operating at a low equilibrium concentration, the adsorbent is not saturated before regeneration, leading to an overestimation of regeneration efficiency …”

Section: Common Overlooks In Ac Regenerationmentioning

confidence: 99%

“…Adsorption isotherms for fresh and regenerated ACs under different operational conditions. Revised from ref .…”

Section: Common Overlooks In Ac Regenerationmentioning

confidence: 99%

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Advanced Oxidation Processes for Activated Carbon Regeneration: From Fundamental to Application

Liu,

Chen,

et al. 2024

ACS EST Water

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Activated carbon (AC) is a cornerstone in water treatment technologies and is renowned for its robust ability to eliminate a wide range of contaminants. However, the adsorption capability of AC diminishes over time and eventually reaches saturation. Given environmental and economic considerations, the regeneration of spent AC emerges as a preferable option. Advanced oxidation processes (AOPs) have been considered a promising approach for spent AC regeneration due to their high efficiency in degrading organic pollutants. This review provides an overview of established AOPs technologies for AC regeneration, elucidating their regeneration mechanisms and key influencing factors. A critical comparison of physicochemical transformations in postregeneration AC and the regeneration efficiency through various AOPs technologies is presented. Moreover, the review addresses some common overlooks in AC regeneration experimental designs and explores the scalability of AOPs regeneration technologies. Finally, future research directions were suggested to improve the AOPs-based regeneration technologies.

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