Study on kinetics and mechanism of Re(VII) ion adsorption and desorption using commercially available activated carbon and solutions containing Se(VI) as an impurity

Kołczyk-Siedlecka, Karolina; Socha, Robert P.; Yang, Xuegeng; Eckert, Kerstin; Wojnicki, Marek

doi:10.1016/j.hydromet.2022.105973

Cited by 7 publications

(2 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Karolina et al established the effectiveness of AC in extracting Re(VII) ions from water-based solutions. They applied the hard and soft acids and bases (HSAB) principle to explain the selectivity of the adsorption process, highlighting the affinity between Re and AC [ 26 ].…”

Section: Adsorption Of Rare-earth Elements On Porous Materialsmentioning

confidence: 99%

Overview of Functionalized Porous Materials for Rare-Earth Element Separation and Recovery

Peng,

Zhu,

Zou

et al. 2024

Molecules

View full text Add to dashboard Cite

The exceptional photoelectromagnetic characteristics of rare-earth elements contribute significantly to their indispensable position in the high-tech industry. The exponential expansion of the demand for high-purity rare earth and related compounds can be attributed to the swift advancement of contemporary technology. Nevertheless, rare-earth elements are finite and limited resources, and their excessive mining unavoidably results in resource depletion and environmental degradation. Hence, it is crucial to establish a highly effective approach for the extraction and reclamation of rare-earth elements. Adsorption is regarded as a promising technique for the recovery of rare-earth elements owing to its simplicity, environmentally friendly nature, and cost-effectiveness. The efficacy of adsorption is contingent upon the performance characteristics of the adsorbent material. Presently, there is a prevalent utilization of porous adsorbent materials with substantial specific surface areas and plentiful surface functional groups in the realm of selectively separating and recovering rare-earth elements. This paper presents a thorough examination of porous inorganic carbon materials, porous inorganic silicon materials, porous organic polymers, and metal–organic framework materials. The adsorption performance and processes for rare-earth elements are the focal points of discussion about these materials. Furthermore, this work investigates the potential applications of porous materials in the domain of the adsorption of rare-earth elements.

show abstract

Section: Adsorption Of Rare-earth Elements On Porous Materialsmentioning

confidence: 99%

Overview of Functionalized Porous Materials for Rare-Earth Element Separation and Recovery

Peng,

Zhu,

Zou

et al. 2024

Molecules

View full text Add to dashboard Cite

show abstract

“…Adsorption is a multi-phase process consisting of stages going on at different time ranges, and the rate of the process is determined by the slowest step. The effectiveness of the adsorption technique is determined by a number of factors, including the following: the properties of the adsorbent [11][12][13] and adsorbate [14][15][16], temperature [17][18][19], mixing speed [20][21][22], the presence of an accompanying substance [23][24][25], and the pH of the solution [26][27][28]. Even a seemingly small increase in the efficiency of adsorption processes used in water and sewage treatment, due to the scale and widespread use of these technologies, may mean achieving a competitive advantage over other solutions.…”

Section: Introductionmentioning

confidence: 99%

Equilibrium and Kinetic Studies on Adsorption of Neutral and Ionic Species of Organic Adsorbates from Aqueous Solutions on Activated Carbon

Wasilewska,

Derylo-Marczewska,

Marczewski

2024

Molecules

View full text Add to dashboard Cite

This work presents comprehensive studies of the adsorption of neutral and ionic forms of organic adsorbates from aqueous solutions on activated carbon. The influence of pH on the equilibrium and kinetics of the adsorption of methylene blue (MB) and organic acids, benzoic (BA), 2-nitrobenzoic (2-NBA), 3-nitrobenzoic (3-NBA), and 4-nitrobenzoic (4-NBA) acid, was investigated. Experimental adsorption isotherms were analyzed using the generalized Langmuir isotherm equation (R2 = 0.932–0.995). Adsorption rate data were studied using multiple adsorption kinetics equations, of which the multi-exponential equation gave the best fit quality (R2 − 1 = (6.3 × 10−6)–(2.1 × 10−3)). The half-time was also used to represent the effect of pH on adsorption kinetics. Strong dependences of the adsorption efficiency on the solution pH were demonstrated. In the case of organic acid adsorption, the amount and rate of this process increased with a decrease in pH. Moreover, larger adsorbed amounts of methylene blue were recorded in an alkaline environment in a relatively short time. The maximum absorbed amounts were 11.59 mmol/g, 6.57 mmol/g, 9.38 mmol/g, 2.70 mmol/g, and 0.24 mmol/g for BA, 2NBA, 3-NBA, 4-NBA, and MB. The pure activated carbon and the selected samples after adsorption were investigated using thermal analysis and X-ray photoelectron spectroscopy.

show abstract

Thermo‐responsive ReO₄⁻ composite membranes with SiO₂ modified: Preparation, performances and application in secondary resources

Zhao

Zhang

et al. 2023

J of Applied Polymer Sci

View full text Add to dashboard Cite

With the continuous depletion of global rhenium resources, the separation and purification of rhenium (Re) from secondary resources became very important. Herein, an imprinted composite membrane with “flexible chain” thermo‐responsive imprinted separation layer structure (Re‐TIICM) was prepared to achieve selective separation and recovery of Re from secondary resources with complex composition. Re‐TIICM's thermo‐responsive imprinted separation layer occurred sol/gel phase transition by adjusting the temperature, which effectively mitigated the trade‐off between selectivity and desorption. The structure and performance of Re‐TIICM under optimum process conditions were tested and evaluated. The results showed that Re‐TIICM exhibited a maximum adsorption capacity of 0.1036 mmol/g at 35°C, a separation degree of 4.37 (MnO4− as disturbing ions), and remained good adsorption capacity and selectivity after 9 adsorption/desorption cycles. When Re‐TIICM was applied in secondary resources, the purity of Re increased from 35.412% to 70.208% after one adsorption/desorption cycle, showing a great potential for industrial applications.

show abstract

Study on kinetics and mechanism of Re(VII) ion adsorption and desorption using commercially available activated carbon and solutions containing Se(VI) as an impurity

Cited by 7 publications

References 28 publications

Overview of Functionalized Porous Materials for Rare-Earth Element Separation and Recovery

Overview of Functionalized Porous Materials for Rare-Earth Element Separation and Recovery

Equilibrium and Kinetic Studies on Adsorption of Neutral and Ionic Species of Organic Adsorbates from Aqueous Solutions on Activated Carbon

Thermo‐responsive ReO₄⁻ composite membranes with SiO₂ modified: Preparation, performances and application in secondary resources

Contact Info

Product

Resources

About

Study on kinetics and mechanism of Re(VII) ion adsorption and desorption using commercially available activated carbon and solutions containing Se(VI) as an impurity

Cited by 7 publications

References 28 publications

Overview of Functionalized Porous Materials for Rare-Earth Element Separation and Recovery

Overview of Functionalized Porous Materials for Rare-Earth Element Separation and Recovery

Equilibrium and Kinetic Studies on Adsorption of Neutral and Ionic Species of Organic Adsorbates from Aqueous Solutions on Activated Carbon

Thermo‐responsive ReO4− composite membranes with SiO2 modified: Preparation, performances and application in secondary resources

Contact Info

Product

Resources

About

Thermo‐responsive ReO₄⁻ composite membranes with SiO₂ modified: Preparation, performances and application in secondary resources