Improved sea water quality by removal of the total hardness using static step-by-step deposition and extraction technique as an efficient pretreatment method

Mahmoud, Mohamed E.; Obada, Mohammed K.

doi:10.1016/j.cej.2014.04.064

Cited by 6 publications

(4 citation statements)

References 26 publications

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“…This data may be used for wide application in the reduction of a large amount of seawater hardness in the pretreatment process, helping to prolong the lifespan of membranes used in wastewater companies. A similar trend was published in works by Hatas et al and Song et al [58,80]. Table 8 shows the comparison between capacity of the tested zeolite materials herein and other published adsorbent materials for the elimination of hardness ions in literature.…”

Section: Applications In Field Study and Real Samplessupporting

confidence: 78%

“…This indicated that both intraparticle diffusion and film diffusion participate in the ion exchange processes [49,79]. Furthermore, the C value derived from the intercept of the equation [12] described the thickness of boundary layer [80]. The thickness of the boundary layer is the region of the surface adsorbent that is responsible for adsorption ability to attract the sorbent.…”

Section: Kinetic Studiesmentioning

confidence: 97%

“…Fig. IV of intraparticle diffusion, the graph dominated more than one step that was involved in the sorption mechanism [49,80].…”

Section: Kinetic Studiesmentioning

confidence: 99%

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Facile and affordable synthetic route of nano powder zeolite and its application in fast softening of water hardness

El-Nahas

Osman

Arafat³

et al. 2020

Journal of Water Process Engineering

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Herein, we proposed an affordable and facile way of treating the hardening of water from local groundwater and seawater sources. This was facilitated by synthesizing zeolitic materials via an effortless and affordable method from readily available disposed of waste materials. Firstly, by converting waste aluminium (scrap wire cables, takeaway foil, cans, and spray aerosol bottles) along with disposed of silica gel into active zeolitic materials with the aid of a conventional domestic microwave. Small amounts of the produced zeolites (NaX and NaA) were utilized in the removal of the hardness of water (10 g.L-1), showing elimination of Ca 2+ and Mg 2+ ions within 30 minutes, removing 90% of the total hardness (> 1000 ppm). The spent zeolite samples can be further used for more than two consequent cycles, then the regeneration can be promoted by using NaCl solution at ambient conditions. The total price for the synthesis of 1 kg of the zeolite produced herein is 14 $/kg. This is 70% lower than the price of commercial zeolites available in the market. Our proposed facile route in zeolite preparation could potentially change the traditional costly softening treatment techniques. It also minimizes the use of extra chemical materials, templates and multistep procedures. The excellent hardness removal capacity in groundwater and seawater using synthesized zeolite samples could open doors for various applications.

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Section: Applications In Field Study and Real Samplessupporting

confidence: 78%

Section: Kinetic Studiesmentioning

confidence: 97%

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Facile and affordable synthetic route of nano powder zeolite and its application in fast softening of water hardness

El-Nahas

Osman

Arafat³

et al. 2020

Journal of Water Process Engineering

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“…This technique works on the basis of the surface deposition of 8HQ molecules on a selected substrate, followed by the deposition of metal ions for the formation of the metal-8HQ complex. The LBL technique has been previously employed as an efficient process for the removal of different heavy metals such as chromium (Cr(III) and Cr(VI)), manganese (Mn(II) and Mn(VII)), and cadmium (Cd(II)), with the percent extraction in the range of ≥98.0% from aqueous solutions, organic solvents, and other matrixes. − The process of the static removal of heavy metals using LBL depends on several important controlling factors such as the number of dipping cycles, dipping time, pH, solvent, initial ligand and metal ion concentrations, exposed surface area, and temperature …”

Section: Introductionmentioning

confidence: 99%

Adsorption Isotherm Models, Kinetics Study, and Thermodynamic Parameters of Ni(II) and Zn(II) Removal from Water Using the LbL Technique

et al. 2017

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The layer-by-layer technique (LbL) is an efficient and sustainable low-cost methodology for the removal of heavy metal ions from various matrixes. The present work is focused, for the first time, on the evaluation of the extraction processes of Ni(II) and Zn(II) by the LbL technique with respect to the studies of the solvent effect, reaction kinetics, adsorption isotherm models and thermodynamic parameters. The extraction of Ni(II) and Zn(II) was based on the design of multilayers of these metal complexes with 8-hydroxyquinoline (8HQ) due to the formation of Ni(8HQ)2 and Zn(8HQ)2 complexes, respectively. The efficient sorption of metal ions was found to follow the dissolution order of 8HQ in methanol > ethanol >1-propanol >1-butanol > acetonitrile. The surface adsorptive removal processes of Ni(II) and Zn(II) from aqueous solution were evaluated by four different kinetics models and were found to be better fit to the pseudo-second-order model with R 2 corresponding to 0.9891 and 0.9995, respectively. The intraparticle diffusion kinetics model was employed to confirm thin film production in the form of boundary layers to account for the removal processes of Ni(II) and Zn(II) from aqueous solution using the LbL technique as a diffusion-controlled process. The adsorption of Ni(II) and Zn(II) in the LbL technique was found to fit better with the Langmuir, Freundlich, and Temkin adsorption isotherm models. The thermodynamics parameters of Ni(II) and Zn(II) extraction from aqueous solutions confirmed the spontaneous and endothermic behavior of the adsorption process.

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Management of petroleum wastewater: comparative evaluation of modern and traditional techniques

Joshi¹,

Bhatia²

2022

Petroleum Industry Wastewater

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Improved sea water quality by removal of the total hardness using static step-by-step deposition and extraction technique as an efficient pretreatment method

Cited by 6 publications

References 26 publications

Facile and affordable synthetic route of nano powder zeolite and its application in fast softening of water hardness

Facile and affordable synthetic route of nano powder zeolite and its application in fast softening of water hardness

Adsorption Isotherm Models, Kinetics Study, and Thermodynamic Parameters of Ni(II) and Zn(II) Removal from Water Using the LbL Technique

Management of petroleum wastewater: comparative evaluation of modern and traditional techniques

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