Fluoride Removal from Groundwater by Technological Process Optimization

Valentukevičienė, Marina; Žurauskienė, Ramunė; Boussouga, Youssef‐Amine

doi:10.1515/eces-2019-0010

Cited by 7 publications

(4 citation statements)

References 30 publications

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“…It was also confirmed that among the natural materials, opoka rock has the highest sorption capacity in water solutions. Opoka-based materials can also be used for the removal of other compounds, such as aluminum [46], catechol [51], fluoride [52], polypropylene [53] or cadmium [54], as well as gases (carbon dioxide (CO 2 ) and sulfur dioxide (SO 2 )) [55,56].…”

Section: Discussionmentioning

confidence: 99%

Use of Natural Sorbents in the Processes of Removing Biogenic Compounds from the Aquatic Environment

Smol

Włóka²

2022

Sustainability

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This paper presents the results of the evaluation of the possibility of using a selected sorbent of natural origin, mineral (opoka rock), for the removal of biogenic compounds from aqueous solutions. The analyzed opoka rock contains approximately 70% calcium carbonate (CaCO3) and from 26 to 27% silicon dioxide (SiO2) and has been classified as heavy opoka rock. The experiment focused on the sorption of organic components, including phosphorus (P), nitrogen (N) and carbon (C). It was carried out for two treatment systems, column tests and batch tests, for three samples of water—water from a water supply system, water from a fish pond and water from a garden pond—located in the region of Silesia (Poland). The results showed that the P removal efficiency was equal to 96.6% for the fine-grained sorbent (grain size < 2 mm) and 90.8% for the coarse-grained sorbent (2–4 mm) in the batch tests, while lower effectiveness was observed for the column tests, reaching 67.8% and 54%, respectively. The efficiency of N (NH4+) removal was equal to 84% for both types of sorbents in the batch tests, while it was 47.7% for the fine-grained sorbent and 26.3% for the coarse-grained sorbent in the column tests. The efficiency of the removal of nitrate-nitrogen (NO3−) was higher for the fine-grained sorbent in all analyzed water samples. The use of materials of natural origin in industrial applications is a recommended direction, part of the green transition. The analyzed samples of opoka rock come from deposits, and opoka rock has so far not been analyzed in terms of its possible use in water and sewage treatment technology. Therefore, further research is recommended for this low-cost sorbent, which may be a competitive material for commercial products.

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Section: Discussionmentioning

confidence: 99%

Use of Natural Sorbents in the Processes of Removing Biogenic Compounds from the Aquatic Environment

Smol

Włóka²

2022

Sustainability

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“…Defluoridation poses a significant challenge in reducing fluoride concentration to meet acceptable standards set by the World Health Organization (WHO) for potable water, which is below 1.5 mg/L [ 5 ]. Numerous technologies have been utilized for the eradication of fluoride from water, encompassing adsorption [ 6 , 7 ], membrane separation [ 8 , 9 ], ion exchange [ 10 , 11 ], and precipitation–coagulation [ 12 ]. Within these technologies, membrane-based processes have garnered considerable interest in removing fluoride from water in recent times owing to their commendable efficiency and dependability.…”

Section: Introductionmentioning

confidence: 99%

Fluoride Removal Using Nanofiltration-Ranged Polyamide Thin-Film Nanocomposite Membrane Incorporated Titanium Oxide Nanosheets

Ali,

Alam,

Qaid

et al. 2024

Nanomaterials

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Drinking water defluoridation has attracted significant attention in the scientific community, from which membrane technology, by exploring thin film nanocomposite (TFN) membranes, has demonstrated a great potential for treating fluoride-contaminated water. This study investigates the development of a TFN membrane by integrating titanium oxide nanosheets (TiO2 NSs) into the polyamide (PA) layer using interfacial polymerization. The characterization results suggest that successfully incorporating TiO2 NSs into the PA layer of the TFN membrane led to a surface with a high negative charge, hydrophilic properties, and a smooth surface at the nanoscale. The TFN membrane, containing 80 ppm of TiO2 NSs, demonstrated a notably high fluoride rejection rate of 98%. The Donnan-steric-pore-model-dielectric-exclusion model was employed to analyze the effect of embedding TiO2 NSs into the PA layer of TFN on membrane properties, including charge density (Xd), the pore radius (rp), and pore dielectric constant (εp). The results indicated that embedding TiO2 NSs increased Xd and decreased the εp by less than the TFC membrane without significantly affecting the rp. The resulting TFN membrane demonstrates promising potential for application in water treatment systems, providing an effective and sustainable solution for fluoride remediation in drinking water.

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“…At present, there is much research related to the process optimization of water treatment membrane technologies [10][11][12][13][14]. However, most of the aforementioned research is based on experimental approaches without mathematical modeling.…”

Section: Introductionmentioning

confidence: 99%

Design Optimization and Carbon Footprint Analysis of an Electrodeionization System with Flexible Load Regulation

Yuan

Qian

et al. 2022

Sustainability

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Thermal power plants will function as a flexible load regulation in a low-carbon grid, which requires operation adaption for the whole system. Energy transition in the electricity sector is the core to realizing carbon neutrality. The power grid will be gradually dominated by renewable energy, such as wind power and photovoltaic solar power. However, renewable energy has problems such as insufficient power supply and output fluctuation; thermal power will be required to regulate the peak load flexibly to meet demand. Therefore, the supply of boiler make-up water prepared by electrodeionization (EDI) in thermal power plants should also be flexibly changed. This study focused on the ultrapure water preparation system by EDI with variable flow rates. For an EDI system with a maximum ultrapure water capacity of 20 m3/h, the power consumption, annual cost, and carbon footprint of different designs are compared. The operation parameters were optimized based on the optimal cost design when the temporal demand of boiler make-up water is reduced to 75%, 50%, and 25%, respectively, considering thermal power as peak load regulation technology. The results showed that the optimized system could significantly reduce power consumption and carbon footprint by up to 30.21% and 30.30%, respectively. The proposed strategy is expected to be widely applied for design and operation optimization when considering the low-carbon but unstable energy system dominated by renewable energy. The carbon footprint could be a feasible optimization object to balance the greenhouse gas emissions from the module manufacturing and operation consumption.

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Fluoride Removal from Groundwater by Technological Process Optimization

Cited by 7 publications

References 30 publications

Use of Natural Sorbents in the Processes of Removing Biogenic Compounds from the Aquatic Environment

Use of Natural Sorbents in the Processes of Removing Biogenic Compounds from the Aquatic Environment

Fluoride Removal Using Nanofiltration-Ranged Polyamide Thin-Film Nanocomposite Membrane Incorporated Titanium Oxide Nanosheets

Design Optimization and Carbon Footprint Analysis of an Electrodeionization System with Flexible Load Regulation

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