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Youssef WM, El-Maadawy MM, Masoud AM, Alhindawy IG, Hussein AEM. Uranium capture from aqueous solution using palm-waste based activated carbon: sorption kinetics and equilibrium. ENVIRONMENTAL MONITORING AND ASSESSMENT 2024; 196:428. [PMID: 38573523 PMCID: PMC10995074 DOI: 10.1007/s10661-024-12560-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Accepted: 03/23/2024] [Indexed: 04/05/2024]
Abstract
Carbonaceous materials produced from agricultural waste (palm kernel shell) by pyrolysis can be a proper type of low-cost adsorbent for wide uses in radioactive effluent treatment. In this context, the as-produced bio-char (labeled as PBC) and its sub-driven sulfuric acid and zinc oxide activated carbons (labeled as PBC-SA, and PBC-Zn respectively) were employed as adsorbents for uranium sorption from aqueous solution. Various analytical techniques, including SEM (Scanning Electron Microscopy), EXD (X-ray Diffraction), BET (Brunauer-Emmett-Teller), FTIR (Fourier Transform Infrared Spectroscopy), and Zeta potential, provide insights into the material characteristics. Kinetic and isotherm investigations illuminated that the sorption process using the three sorbents is nicely fitted with Pseudo-second-order-kinetic and Langmuir isotherm models. The picked data display that the equilibrium time was 60 min, and the maximum sorption capacity was 9.89, 16.8, and 21.9 mg/g for PBC, PBC-SA, and PBC-Zn respectively, which reflects the highest affinity for zinc oxide, activated bio-char, among the three adsorbents, for uranium taking out from radioactive wastewater. Sorption thermodynamics declare that the sorption of U(VI) is an exothermic, spontaneous, and feasible process. About 92% of the uranium-loaded PBC-Zn sorbent was eluted using 1.0 M CH3COONa sodium ethanoate solution, and the sorbent demonstrated proper stability for 5 consecutive sorption/desorption cycles.
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Affiliation(s)
| | | | - A M Masoud
- Nuclear Materials Authority, Cairo, Egypt.
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Masoud AM, El-Zahhar AA, El Naggar AMA, Zahran AI, Al-Hazmi GAA, Taha MH. Soya bean derived activated carbon as an efficient adsorbent for capture of valuable heavy metals from waste aqueous solution. RADIOCHIM ACTA 2022. [DOI: 10.1515/ract-2022-0098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Abstract
The removal of hazardous metal ions from liquid waste effluents is very important for water as well as environmental safety. In this regard, this article discusses in detail the U(VI) uptake from aquatic environment using biomass-based Soya Bean activated carbon (labeled as AC-SB). XRD, SEM, FTIR, Raman, and BET analysis were used to characterize the synthesized AC-SB sorbent. Batch-type experiments were used to investigate the effect of various parameters on adsorption efficiency, including pH, metal-ion concentration, temperature, and contact time. The sorption experimental data have been described well with pseudo-second-order kinetic mathematical equations. The equilibrium state of the uptake reaction was 120 min. The Langmuir isotherm model accurately described the equilibrium process which declares that the uranium sorption is a monolayer and homogeneous process. The sorption capacity of the prepared AC was 32.7 mg g−1. Thermodynamic analysis explore that the U(VI) uptake process is endothermic, feasible and spontenous process. The displayed results demonstrate that the prepared AC-SB sorbent could be used as the proper material for uranium sorption from real matrix samples.
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Affiliation(s)
- Ahmed M. Masoud
- Nuclear Materials Authority , P.O. Box 530, El Maddi , Cairo , Egypt
| | - Adel A. El-Zahhar
- Department of Chemistry, Faculty of Science , King Khalid University , Abha 9004 , Saudi Arabia
- Nuclear Chemistry Department, Hot Laboratory Center , AEA , P.O. 13759 , Cairo , Egypt
| | - Ahmed M. A. El Naggar
- Egyptian Petroleum Research Institute (EPRI) , 1 Ahmed El-Zomer St., Nasr City , Cairo , Egypt
| | - Asmaa I. Zahran
- Egyptian Petroleum Research Institute (EPRI) , 1 Ahmed El-Zomer St., Nasr City , Cairo , Egypt
| | - Gamil A. A. Al-Hazmi
- Department of Chemistry, Faculty of Science , King Khalid University , Abha 9004 , Saudi Arabia
| | - Mohamed H. Taha
- Nuclear Materials Authority , P.O. Box 530, El Maddi , Cairo , Egypt
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Modified Hazelnut Shells as a Novel Adsorbent for the Removal of Nitrate from Wastewater. WATER 2022. [DOI: 10.3390/w14050816] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The aim of the study was to prepare a novel adsorbent by chemical modification of hazelnut shells and evaluate its potential for the nitrate removal from model solutions and real wastewater. The characterization of the novel adsorbent, i.e., modified hazelnut shell (MHS) was performed. The adsorbent characterization included the analysis of elemental composition and the surface characteristics analysis by scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR). The adsorption experiments (batch technique) were performed to investigate the effects of adsorbent concentration, contact time, initial nitrate concentration, and solution pH. The nitrate removal efficiency increased with the increase in MHS concentration and decreased with the initial nitrate concentration. MHS was found to be effective in nitrate removal over a wide pH range (from 2 to 10), and the highest amount of nitrate adsorbed was 25.79 mg g−1 in a model nitrate solution. Depending on the aqueous medium (model solutions or real wastewater samples), it was shown that both Langmuir and Freundlich adsorption isotherm models can be used to interpret the adsorption process. It was found that the kinetics are well described by a pseudo-second order model and the nitrate adsorption process can be controlled by chemisorption. The intraparticle diffusion model has been used to identify an adsorption-controlled process by diffusion mechanisms. Adsorption/desorption experiments in column confirmed that MHS could be successfully used in multiple cycles (at least three), indicating the potential of MHS as an alternative to costly commercial adsorbents for the removal of nitrates from wastewater.
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Zhu M, Li F, Chen W, Yin X, Yi Z, Zhang S. Adsorption of U(VI) from aqueous solution by using KMnO 4-modified hazelnut shell activated carbon: characterisation and artificial neural network modelling. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:47354-47366. [PMID: 33891243 DOI: 10.1007/s11356-021-14034-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Accepted: 04/16/2021] [Indexed: 06/12/2023]
Abstract
This study is based on U(VI) removal from wastewater by KMnO4-modified hazelnut shell activated carbon (KM-HSAC) using adsorption technology. A characterisation study of KM-HSAC was conducted through scanning electron microscope and energy-dispersive X-ray spectroscopy (EDS) analysis. The rough surface of KM-HSAC contains many irregular microspores. The EDS pattern confirmed the U(VI) adsorption on the KM-HSAC. A batch study experiment gave optimum results for U(VI) at pH 6, contact time of 160 min, initial U(VI) concentration of 155.56 mg/L and KM-HSAC dosage of 4 g/L, with a maximum adsorption capacity of 22.27 mg/g. The prediction performance of artificial neural network models was validated through the low values of statistical error (2.708 and 8.241 for RMSE of training and testing data, respectively) and the high determination coefficient value (0.987 and 0.906 for training and testing data, respectively). Experimental results suggest that KM-HSAC has a high potential for the removal of U(VI) from wastewater.
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Affiliation(s)
- Mijia Zhu
- School of Chemistry and Environmental Engineering, Yangtze University, 434023, Jingzhou, People's Republic of China.
| | - Fanxiu Li
- School of Chemistry and Environmental Engineering, Yangtze University, 434023, Jingzhou, People's Republic of China
| | - Wu Chen
- School of Chemistry and Environmental Engineering, Yangtze University, 434023, Jingzhou, People's Republic of China
| | - Xianqing Yin
- School of Chemistry and Environmental Engineering, Yangtze University, 434023, Jingzhou, People's Republic of China
| | - Zhengji Yi
- School of Chemistry and Material Science, Hengyang Normal University, 421008, Hengyang, People's Republic of China
| | - Shuyong Zhang
- School of Chemistry and Environmental Engineering, Yangtze University, 434023, Jingzhou, People's Republic of China
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Xie Y, Chen C, Ren X, Wang X, Wang H, Wang X. Emerging natural and tailored materials for uranium-contaminated water treatment and environmental remediation. PROGRESS IN MATERIALS SCIENCE 2019; 103:180-234. [DOI: https:/doi.org/10.1016/j.pmatsci.2019.01.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/25/2023]
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Haas S, Boschi V, Grannas A. Metal sorption studies biased by filtration of insoluble metal oxides and hydroxides. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 646:1433-1439. [PMID: 30235628 DOI: 10.1016/j.scitotenv.2018.07.419] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Revised: 07/30/2018] [Accepted: 07/30/2018] [Indexed: 06/08/2023]
Abstract
Toxic metals in the environment are often remediated using sorption techniques, particularly in aquatic and drinking water systems. However, a review of over 30 published sorption studies in the past two years alone revealed that the use of filtration to separate sorbed from unsorbed metals do not take into account metal hydroxide and oxide formation, and thus likely produce erroneous results. We quantified the effect of filtration on the removal of metal oxide/hydroxides from solution using a 0.45 μm filter as a function of pH, initial metal concentration and ionic strength for As, Be, Cd, Cu, Cr, Pb and Zn. We found that even when the initial metal concentration was as low as 0.1 mg/L, up to 93% of metals in solution were removed and up to 100% removal was observed when the initial metal concentration was 5 mg/L at a pH of 7. If this was unaccounted for, precipitated metal oxide/hydroxide removed via filtration will be inaccurately attributed to metal sorption. Additionally, we demonstrate that speciation modeling can underestimate the pH at which insoluble metal species form and therefore can only be used to approximate metal precipitation, especially in complex matrices. Overestimating the sorption capacity of sorbent materials has major implications if these sorbents are used for the purification of drinking water or other vital environmental remediation efforts. We recommend sorption studies using filtration prepare the appropriate matrix-matched control samples to quantify potential metal oxide/hydroxide formation.
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Affiliation(s)
- Savannah Haas
- Department of Chemistry, Villanova University, 800 Lancaster Avenue, Villanova, PA 19085, United States of America
| | - Vanessa Boschi
- Department of Chemistry, Villanova University, 800 Lancaster Avenue, Villanova, PA 19085, United States of America.
| | - Amanda Grannas
- Department of Chemistry, Villanova University, 800 Lancaster Avenue, Villanova, PA 19085, United States of America
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Bamboo (Acidosasa longiligula) shoot shell biochar: its potential application to isolation of uranium(VI) from aqueous solution. J Radioanal Nucl Chem 2018. [DOI: 10.1007/s10967-018-5731-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Zarrougui R, Mdimagh R, Raouafi N. Highly efficient extraction and selective separation of uranium (VI) from transition metals using new class of undiluted ionic liquids based on H-phosphonate anions. JOURNAL OF HAZARDOUS MATERIALS 2018; 342:464-476. [PMID: 28865257 DOI: 10.1016/j.jhazmat.2017.08.057] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Revised: 08/15/2017] [Accepted: 08/21/2017] [Indexed: 06/07/2023]
Abstract
In this paper, we report the development of an environmental friendly process to decontaminate uranium-containing ores and nuclear wastes by using non-fluorinated ionic liquids (ILs). The main advantages of this extraction process are the absence of any organic diluent and extra extraction agents added to the organic phase. Moreover, the process is cost-effective and maybe applied as a sustainable hydrometallurgical method to recover uranium. The distribution ratio (DU) and the extraction efficiency (%E) of uranium(VI) (UO22+) were found to be dependent on the acidity of the aqueous phase, the extraction time, the alkyl chain length in the ILs, the concentration of the aqueous feed and molar quantity of ILs. The DU value is higher than 600 and the %E is equal to 98.6% when [HNO3]=7M. The extraction reactions follows a neutral partition or ionic exchange mechanism depending on nitric acid concentration. The nature of bonding in the extracted complexes was investigated by spectroscopic techniques. The potential use of Mor1-8-OP for the separation of UO22+ from a mixture containing transition metal ions Mn+ was also examined. The UO22+ ions were separated and extracted efficiently. These ILs are promising candidates for the recovery and separation of uranium.
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Affiliation(s)
- Ramzi Zarrougui
- Laboratoire des Matériaux Utiles (LR10INRAP01), Institut national de recherche et d'analyse physico-chimique, Biotechpole Sidi Thabet, 2020, Ariana, Tunisia.
| | - Raouf Mdimagh
- Laboratoire des Substances Naturelles (LR10INRAP02), Institut national de recherche et d'analyse physico-chimique, Sidi Thabet Biotechpole, 2020, Ariana, Tunisia
| | - Nourreddine Raouafi
- Laboratoire de Chimie Analytique et Electrochimie (LR99ES15), Faculté des Sciences de Tunis, Université de Tunis El Manar, 2092, Tunis, Tunisia
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Decontamination of Uranium-Polluted Groundwater by Chemically-Enhanced, Sawdust-Activated Carbon. COLLOIDS AND INTERFACES 2017. [DOI: 10.3390/colloids1010002] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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