Synthesized Zeolite Based on Egyptian Boiler Ash Residue and Kaolin for the Effective Removal of Heavy Metal Ions from Industrial Wastewater

Ibrahim, Ahmed H.; Lyu, Xianjun; ElDeeb, A.B.

doi:10.3390/nano13061091

Cited by 22 publications

(7 citation statements)

References 82 publications

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“…The observed shift suggests that the carboxyl group of wood substrates in the composites may interact with sodium ions. The results are consistent with the Na 1s spectra (Figure 5c) containing a peak of about 1072 eV, corresponding to the R-COO-Na complex, which, together with Na, displays interaction with the zeolite framework oxygen (1073 eV) [38,39]. Figure S6 shows the O 1s spectra, which display two oxygen species separately from 529.0 to 536.5 eV in the wood [33,34] and from 529.0 to 537.0 eV in the zeolite [40].…”

Section: Chemical Properties Of Wood-zeolite Compositessupporting

confidence: 86%

Synthesis and Characterization of Zeolite NaY Dispersed on Bamboo Wood

Tawachkultanadilok,

Osakoo,

Keawkumay

et al. 2023

Materials

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Zeolites in powder form have the potential to agglomerate, lowering access to active sites. Furthermore, a suspension of fine zeolite powder in liquid media is difficult to separate. Such drawbacks could be improved by dispersing zeolite crystals on support materials. This work demonstrates the dispersion of zeolite NaY crystals on bamboo wood by mixing the wood with zeolite gel before hydrothermal treatment. The syntheses were performed with acid-refluxed and non–refluxed wood. The phase of zeolites, particle distribution and morphology, zeolite content in the wood, and zeolite–wood interaction were investigated using X-ray diffraction, X-ray tomography, scanning electron microscopy, thermogravimetric analysis, nitrogen sorption analysis, and X-ray photoelectron spectroscopy. Higher zeolite content and better particle dispersion were obtained in the synthesis with the acid–refluxed wood. The composite of NaY on the acid-refluxed wood was demonstrated to be an effective adsorbent for Ni(II) ions in aqueous solutions, providing a higher adsorbed amount of Ni(II) per weight of NaY.

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Section: Chemical Properties Of Wood-zeolite Compositessupporting

confidence: 86%

Synthesis and Characterization of Zeolite NaY Dispersed on Bamboo Wood

Tawachkultanadilok,

Osakoo,

Keawkumay

et al. 2023

Materials

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“…Using the linear plot of C e / q e vs. C e in Figure 12 A, the values for Q o and K l , the Langmuir constants, were determined to be 322.58 mg·g −1 and 0.0615 dm 3 ·mg −1 , correspondingly ( Table 2 ). A dimensionless constant, the equilibrium factors controlling R L [ 47 ] describes the fundamental features of the Langmuir isotherm equation given by Equation (7):

…”

Section: Resultsmentioning

confidence: 99%

“…All the concentrations of Co +2 studied had RL values between 0.0107 and 0.0514. The formula for the Freundlich isotherm is expressed in Equation (8) and its logarithmic form is expressed in Equation (9) [ 47 ]:

where k f is the adsorption capacity and n is the adsorption intensity. Figure 12 B is a linear plot of log q e versus log C e , and the Freundlich constants and k f and n values of the adsorption of Co +2 by the TZAB are listed in Table 2 .…”

Section: Resultsmentioning

confidence: 99%

Eco-Friendly Recycling of Lithium Batteries for Extraction of High-Purity Metals

et al. 2023

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The significant increase in lithium batteries consumption produces a significant quantity of discarded lithium-ion batteries (LIBs). On the one hand, the shortage of high-grade ores leads to the necessity of processing low-grade ores, which contain a low percentage of valuable metals in comparison to the discarded LIBs that contain a high percentage of these metals, which enhances the processing of the discarded LIBs. On the other hand, the processing of discarded LIBs reduces the negative environmental effects that result from their storage and the harmful elements contained in their composition. Hence, the current study aims at developing cost-effective and ecofriendly technology for cobalt and lithium metal ion recovery based on discarded LIBs. A novel synthesized solid-phase adsorbent (TZAB) was utilized for the selective removal of cobalt from synthetic solutions and spent LIBs. The synthesized TZAB adsorbent was characterized by using 13C-NMR, GC-MS, FT-IR, 1H-NMR, and TGA. The factors affecting the adsorption of cobalt and lithium ions from synthetic solutions and spent LIBs, including the sorbent dose, pH, contact time, temperature, and cobalt concentration were investigated. The conditions surrounding the recovery of cobalt and lithium from processing discarded LIBs, were investigated to optimize the maximum recovery. The Langmuir, Freundlich, and Dubinin–Radushkevich (D-R) isotherm models were used to study the kinetics of the adsorption process. The obtained results showed that high-purity CoC2O4 and Li3PO4 were obtained with a purity of 95% and 98.3% and a percent recovery of 93.48% and 95.76%, respectively. The maximum recovery of Co(II) from synthetic solutions was obtained at C0 = 500 mg·L−1, dose of 0.08 g, pH 7.5, T = 25 °C, and reaction time = 90 min. The collected data from Langmuir’s isotherm and the adsorption processes of Co agree with the data predicted by the D-R isotherm models, which shows that the adsorption of Co(II) onto the TZAB seems to be chemisorption, and the results agree with the Langmuir and D-R isotherm models.

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“…Regarding the higher extreme daily precipitations for this area, the values during the period from1994 and 2014 ranged from below 65 mm to above 85 mm [7]. The gap between water supply and water demand increases gradually with the rapid increase of the population [8]. This resulted in a water gap between water supply and water demand.…”

Section: Introductionmentioning

confidence: 88%

Assessing the Impact of Irrigation Improvement Projects on Water Account Elements

Abdellatif,

Sobieh,

El-Gamal

et al. 2024

Journal of Al-Azhar University Engineering Sector

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With the establishment of Irrigation Improvement Projects (IIPs) in the old lands, there was an expectation to improve irrigation efficiency to 75%, which should result in considerable water savings. An evaluation program was conducted by the Water Management Research Institute and the evaluation results rejects such a hypothesis, and it showed that the irrigation efficiency was not improved. The current study was conducted for investigating three regions, which are unimproved area, IIP1-type improved area, and IIIMP-type improved area. Therefore, the main objectives were: 1) Calculating water consumption for the selected three areas, 2) Calculating water supply for the selected three areas, 3) Irrigation efficiencies were calculated for selected three areas, 4) studying the farmers' behaviors. To investigate the reason for not achieving the expected irrigation efficiency, two improved areas and one unimproved area were investigated and some water account elements were assessed. The two improved areas were related to the first phase of Irrigation Improvement Project (IIP1-type) and Integrated Irrigation Improvement Project and Management Project (IIIMP-type) Mesqas. The unimproved area does not have Low-Level Mesqa and one lifting point on a branch canal is serving the entire area through one Marwa. The main difference between IIIMP-type Mesqa and the other two areas is the improvement of the Marwas. Other differences include pump sizes, the dominant crop, and the irrigation cost. The dominant crop in IIMP-type Mesqa was rice crop, which is normally associated with low irrigation efficiency. In IIP1-type Mesqa and the unimproved Mesqa, the dominant crop was Maize crop. The assessed elements were the on-farm irrigation efficiency and the conveyance efficiency through the Marwas. Water consumption was calculated based on remote sensing technique, water application was calculated for different areas and discussions with farmers were used to interpret the results. Overall irrigation efficiency (the summation of on-farm irrigation efficiency and Marwa's conveyance efficiency) in the three areas was close to each other (55% for the unimproved, 49.9% for IIP1-type Mesqa and 50% for IIIMP-type Mesqa). The results showed that the variation between on-farm irrigation efficiency for different fields was considerably higher than the differences between the investigated areas. Discussions with the operators showed that decreasing the irrigation cost and distributing the cost based on the irrigated area without considering the water used encouraged farmers to use more water. The study recommended having firm control of water distribution and enhancing the capacity building of Water Users Associations (WUAs) to improve water use efficiency in the improved areas.

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Synthesized Zeolite Based on Egyptian Boiler Ash Residue and Kaolin for the Effective Removal of Heavy Metal Ions from Industrial Wastewater

Cited by 22 publications

References 82 publications

Synthesis and Characterization of Zeolite NaY Dispersed on Bamboo Wood

Synthesis and Characterization of Zeolite NaY Dispersed on Bamboo Wood

Eco-Friendly Recycling of Lithium Batteries for Extraction of High-Purity Metals

Assessing the Impact of Irrigation Improvement Projects on Water Account Elements

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