Chemical coagulation-based processes for trace organic contaminant removal: Current state and future potential

Alexander, Jonathan T.; Hai, Faisal I.; Alaboud, Turki M.

doi:10.1016/j.jenvman.2012.07.023

Cited by 170 publications

(68 citation statements)

References 85 publications

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“…These substances can be divided into several categories, one of which is classifications into organic micropollutants (e.g. polycyclic aromatic hydrocarbons, polychlorinated biphenyls, surfactants, pesticides), and inorganic micropollutants, primarily heavy metals [1,2].…”

Section: Introductionmentioning

confidence: 99%

“…endocrine disrupting compounds (EDCs), pharmaceutical and personal care products (PPCPs), disinfection by-products (DBPs), polychlorinated biphenyls (PCB), dioxins and furans (PCDF). Trace organic contaminants have become an increasing cause of concern for governments and water authorities around the world, as they attempt to implement sustainable water reuse practices [1].…”

Section: Introductionmentioning

confidence: 99%

“…The choice of micropollutant removal processes is determined by their type, properties, and form of occurrence. Therefore it is vital that effective water treatment processes are employed to remove trace organic contaminants, and thus ensure that any potential human health risks are mitigated prior to consumption [1].…”

Section: Introductionmentioning

confidence: 99%

“…In the water treatment technology using chemical methods, the coagulation belongs to the most important unit processes. Its main purpose is to reduce turbidity and colour of water or wastewater, by degradation of colloid structures, intensification of flocculation of suspended solids, and intensification of sedimentation process of produced sediments [1,5]. Moreover as a result of coagulation, decrease in concentration of organic substances, heavy metal ions, phosphates, silica, bacteria, and viruses occurs.…”

Section: Introductionmentioning

confidence: 99%

“…In most natural waters with a typical range of pH, negative electric charge of mineral particles equals from 0.1 to 1 µeq/mg, while the charge of organic substances is usually 10 to 100 times higher. The presence of natural organic matter in treated water has an important impact on the coagulation process and on physical properties of the resulting agglomerates [1,6].…”

Section: Introductionmentioning

confidence: 99%

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Influence of Selected Coagulants of Indicator and Dioxin-Like PCB Removal from Drinking Water

Rosińska

2017

Ecological Chemistry and Engineering S

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Abstract:The aim of the research was to compare selected coagulants efficiency in indicator and chosen dioxinlike PCB removal from surface water. As coagulants, there were used aluminium sulfate and 5 hydrolyzed polyaluminium chlorides, with trade names: PAX-XL1, PAX-XL10, PAX-XL19, PAX-XL60, PAX-XL69. For the research, surface water was used, collected from dam reservoir. The water composition was modified with standard mixtures PCB MIX24 and MIX13, in order to obtain concentration of each congener equal to 300 ng/dm 3 . The PCB MIX24 mixture was composed of indicator congeners solution: 28, 52, 101, 118, 138, 153, and 180, whereas the MIX13 mixture -solution of three dioxin-like PCB 77, PCB 126, and PCB 169. It was demonstrated that the application of aluminium sulfate allowed for reaching better effects for purifying water of PCB, than with the usage of pre-hydrolyzed salts, polyaluminium chlorides. Out of the studied coagulants, the best effects for indicator PCB removal were obtained with the application of aluminium sulfate, total PCB concentration was decreased by 65%. The highest efficiency for indicator congeners removal (90%) was obtained for PCB 138 and 153. After the application of hydrolyzed polyaluminium chlorides PAX-XL1, PAX-XL10 decrease in higher chlorinated PCB concentration was obtained, in the range of 23 to 74%. Selectivity of chosen PCB congener removal, depending on applied coagulant, was demonstrated; with the usage of aluminium sulfate, removal of heptachlorobiphenyl PCB 180 at the level of 34% was obtained, whereas with the application of PAX-XL1 and PAX-XL10 higher reduction efficiency for this congener was obtained, i.e. 83 and 74% respectively. For dioxin-like PCB, after application of aluminium sulfate, total concentration reduction by 74% was obtained, efficiency of this congeners removal amounted to from 54 (PCB 77) up to 72% (PCB 126), similar results were obtained after the usage of PAX-XL1. The lowest PCB removal from water rate was stated for coagulants PAX-XL60 and PAX-XL69.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Influence of Selected Coagulants of Indicator and Dioxin-Like PCB Removal from Drinking Water

Rosińska

2017

Ecological Chemistry and Engineering S

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Porous Materials for Water Purification

et al. 2023

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Water pollution is a growing threat to humanity due to the pervasiveness of contaminants in water bodies. Significant efforts have been made to separate these hazardous components to purify polluted water through various methods. However, conventional remediation methods suffer from limitations such as low uptake capacity or selectivity, and current water quality standards cannot be met. Recently, advanced porous materials (APMs) have shown promise in improved segregation of contaminants compared to traditional porous materials in uptake capacity and selectivity. These materials feature merits of high surface area and versatile functionality, rendering them ideal platforms for the design of novel adsorbents. This Review summarizes the development and employment of APMs in a variety of water treatments accompanied by assessments of task-specific adsorption performance. Finally, we discuss our perspectives on future opportunities for APMs in water purification.

show abstract

Porous Materials for Water Purification

et al. 2023

View full text Add to dashboard Cite

Water pollution is a growing threat to humanity due to the pervasiveness of contaminants in water bodies. Significant efforts have been made to separate these hazardous components to purify polluted water through various methods. However, conventional remediation methods suffer from limitations such as low uptake capacity or selectivity, and current water quality standards cannot be met. Recently, advanced porous materials (APMs) have shown promise in improved segregation of contaminants compared to traditional porous materials in uptake capacity and selectivity. These materials feature merits of high surface area and versatile functionality, rendering them ideal platforms for the design of novel adsorbents. This Review summarizes the development and employment of APMs in a variety of water treatments accompanied by assessments of task‐specific adsorption performance. Finally, we discuss our perspectives on future opportunities for APMs in water purification.

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Chemical coagulation-based processes for trace organic contaminant removal: Current state and future potential

Cited by 170 publications

References 85 publications

Influence of Selected Coagulants of Indicator and Dioxin-Like PCB Removal from Drinking Water

Influence of Selected Coagulants of Indicator and Dioxin-Like PCB Removal from Drinking Water

Porous Materials for Water Purification

Porous Materials for Water Purification

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