Removal of cobalt ions (II) from simulated radioactive effluent by electrosorption on potassium hydroxide modified activated carbon fiber felt

Ma, Fuqiu; Zhu, Wenmin; Chen, Jiaqi; Gao, Jianzhang; Xue, Yun; Yan, Yongde

doi:10.1016/j.jwpe.2023.103635

Cited by 17 publications

(4 citation statements)

References 48 publications

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“…This method is particularly effective for the treatment and recovery of certain radioactive isotopes [ 126 ]. Various materials, including activated carbon [ 127 , 128 ], zeolites [ 129 , 130 ], and certain types of clay [ [131] , [132] , [133] ], have shown potential as effective adsorbents for radioactive elements. The advantage of adsorption lies in its ability to concentrate radioactive contaminants from large volumes, making subsequent disposal or recovery processes more efficient.…”

Section: Remediation Techniques For Nuclear Isotope Emissions or Leaksmentioning

confidence: 99%

Unraveling the nuclear isotope tapestry: Applications, challenges, and future horizons in a dynamic landscape

Yang,

Feng,

et al. 2024

Eco-Environment & Health

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Section: Remediation Techniques For Nuclear Isotope Emissions or Leaksmentioning

confidence: 99%

Unraveling the nuclear isotope tapestry: Applications, challenges, and future horizons in a dynamic landscape

Yang,

Feng,

et al. 2024

Eco-Environment & Health

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“…Các nghiên cứu đã chỉ ra rằng, khi nồng độ coban trong dung dịch đất >10 mg⋅L − 1 , cây trồng có thể bị chết. Khi nồng độ coban trong nước >5 mg⋅L − 1 , cá sẽ chết [1]. Tổ chức Lương thực và Nông nghiệp của Liên hợp quốc (FAO) quy định hàm lượng coban trong nước tưới không được vượt quá 100 μg⋅L − 1 , nồng độ của các ion coban trong nước thải phải < 1 mg⋅L −1 [1].…”

Section: Giới Thiệu Chungunclassified

“…Khi nồng độ coban trong nước >5 mg⋅L − 1 , cá sẽ chết [1]. Tổ chức Lương thực và Nông nghiệp của Liên hợp quốc (FAO) quy định hàm lượng coban trong nước tưới không được vượt quá 100 μg⋅L − 1 , nồng độ của các ion coban trong nước thải phải < 1 mg⋅L −1 [1]. Vì vậy, khi hàm lượng coban trong nước vượt quá giới hạn cho phép thì cần được xử lý.…”

Section: Giới Thiệu Chungunclassified

Research on adsorption – desorption the ability of hydroxyapatite for Co2+ ions and recovery cobalt by electrochemical deposition

Le Thi Duyen,

Le Thi Phuong Thao,

Dinh Thi Mai Thanh

et al. 2024

Vietnam j. catal. adsorp.

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Hydroxyapatite has a nanostructure with the chemical formula of Ca10(PO4)6(OH)2. In this paper, hydroxyapatite is used to study the ability to adsorb Co2+ ions. The influence of some factors on Co2+ adsorption capacity and efficiency has been studied. Co2+ adsorption efficiency and capacity reached 85.08% and 6.38 mg/g under the suitable conditions: hydroxyapatite mass of 0.2 g/50 mL solution, 50 mg/L initial Co2+ concentration, pH 5.0, exposure time of 30 minutes at room temperature (25oC). The process of desorption of Co2+ from the loaded adsorbent and recovery of metallic Co was also studied. Cobalt recovery efficiency reached 94.58% under appropriate conditions: applied current 7.5 mA, electrolysis time of 10 hours, loaded hydroxyapatite mass of 0.1 g, temperature 60oC. After desorption process, the adsorbent was regenerated for further studies. The adsorption isotherm was studied based on two Langmuir and Freundlich models. The adsorption kinetics were examined using two pseudo-first-order and pseudo-second-order kinetic models.

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“…An electric field is generated between two electrodes in this technology, which attracts charged pollutants toward the electrode surface. Once adsorbed onto the electrode surface, the pollutants can be conveniently extracted from the water [22]. Rhodamine B, a hazardous dye utilized in numerous industrial processes, such as paper dyeing and laser dye production [23,24], belongs to the family of xanthene dyes and is vivid pink in color.…”

Section: Introductionmentioning

confidence: 99%

NiO/AC Active Electrode for the Electrosorption of Rhodamine B: Structural Characterizations and Kinetic Study

et al. 2023

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In this work, the aim was to enhance the performance of activated carbon (AC) as an electroadsorbent by incorporating NiO particles, thereby increasing its electrochemical capacity and its ability to adsorb Rhodamine B (RhB) dye. The prepared NiO/AC material was characterized using X-ray diffraction, scanning electron microscopy, BET surface area analysis, and infrared spectroscopy. The study involved the preparation of AC from almond shell biomass and the subsequent formation of a composite structure with NiO. The objective was to investigate the electrochemical adsorption capacity of the NiO/AC composite for RhB dye removal from simulated wastewaters. The experimental results demonstrated that the removal efficiency of RhB dye increased with an increase in the applied cell voltage. At a voltage of 1.4 V, a remarkable 100% removal efficiency was achieved. The electroadsorption process was well described by fitting the experimental data to the Freundlich isotherm model. The maximum adsorption capacities for RhB dye at concentrations of 7, 8, and 9 ppm were determined to be 149, 150, and 168 mg/g, respectively. Based on the obtained results, an electroadsorption mechanism was proposed to explain the observed behavior of the NiO/AC composite in adsorbing RhB dye. Overall, this study highlights the potential of the NiO/AC composite as an effective electroadsorbent for the removal of Rhodamine B dye from wastewater. The improved electrochemical capacity, coupled with the high adsorption capacity of the composite, makes it a promising material for wastewater treatment applications.

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Removal of cobalt ions (II) from simulated radioactive effluent by electrosorption on potassium hydroxide modified activated carbon fiber felt

Cited by 17 publications

References 48 publications

Unraveling the nuclear isotope tapestry: Applications, challenges, and future horizons in a dynamic landscape

Unraveling the nuclear isotope tapestry: Applications, challenges, and future horizons in a dynamic landscape

Research on adsorption – desorption the ability of hydroxyapatite for Co2+ ions and recovery cobalt by electrochemical deposition

NiO/AC Active Electrode for the Electrosorption of Rhodamine B: Structural Characterizations and Kinetic Study

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