Design of a membrane facility for water potabilization and its application to Third World countries

Arnal, J.M.; Fernández, María Sancho; Verdú, G.; García, Jaime Lora

doi:10.1016/s0011-9164(01)00205-3

Cited by 32 publications

(2 citation statements)

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“…1 Decentralized water treatment can be of great benefit in disasters zones, where following a disaster people are highly susceptible to diseases that originate from sanitation and problems with water supply. 3 Humic acid is naturally present in water sources due to plant biodegradation. 4 Although humic acid itself is not toxic, undesirable taste, color, and odor do result from its existence in drinking water.…”

Section: Introductionmentioning

confidence: 99%

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Influence of Film Stability and Aging of Plasma Polymerized Allylamine Coated Quartz Particles on Humic Acid Removal

Jarvis

Majewski

2013

ACS Appl. Mater. Interfaces

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Plasma polymerized allylamine (ppAA) films have been successfully deposited on to the surface of quartz particles via a rotating barrel plasma reactor for humic acid removal. The films were deposited at a power of 25 W, allylamine flow rate of 4.4 sccm and polymerization times of 5 to 60 min. X-ray photoelectron spectroscopy was used to investigate the influence of short-term stirring in water and film age on surface chemistry. Stirring results in a reduction in the nitrogen concentration, which was greatest for shorter polymerization times. Film aging of up to 52 weeks appeared to result in a reduction in the concentration of C-N species. The influence of batch, recycling, and film age on humic acid removal was investigated. Humic acid removal appeared to be reproducible across three separate batches for polymerization times of 20 min or more, which was attributed to film thickness. Recycling of the ppAA films was most successful at pH 11 for up to 4 humic acid removal/regeneration cycles. Successful regeneration at pH 11 was attributed to electrostatic repulsion of the adsorbed humic acid molecules. Decreasing the pH of the regeneration solution reduced the number of successful regeneration cycles due to greater retention of adsorbed humic acid via electrostatic attraction. Film age appears to have minimal effect on humic acid removal where freshly deposited and 52-week-old films removed similar masses of humic acid. Successful production and development of ppAA coated quartz particles has resulted in a functional material that can be incorporated into a water treatment system to improve water quality.

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Section: Introductionmentioning

confidence: 99%

“…Some already existing decentralized water treatment methods include boiling, filtration, and solar disinfection . Decentralized water treatment can be of great benefit in disasters zones, where following a disaster people are highly susceptible to diseases that originate from sanitation and problems with water supply …”

Section: Introductionmentioning

confidence: 99%

Influence of Film Stability and Aging of Plasma Polymerized Allylamine Coated Quartz Particles on Humic Acid Removal

Jarvis

Majewski

2013

ACS Appl. Mater. Interfaces

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Pilot‐scale study of Polyelectrolyte‐Enhanced UF for arsenic removal

Gallo¹,

Acosta²,

Sabatini³

2006

Journal AWWA

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The removal of arsenic (As) from dilute aqueous solutions has become of greater interest as lower drinking standards are implemented. In polyelectrolyte‐enhanced ultrafiltration (PEUF), a cationic water‐soluble polyelectrolyte (poly‐diallyldimethylammonium chloride [QUAT]) binds the anionic arsenate species and is rejected by the membrane, which has a 10 kDa molecular weight cutoff (MWCO). In the research presented in this article, PEUF was used to treat water with As concentrations of 50–100 μg/L. The results demonstrated that PEUF was able to produce treated water that meets the proposed US Environmental Protection Agency maximum contaminant level of 10 μg/L. In this study, the PEUF process was scaled up with a spiral‐wound ultrafiltration module operated under steady‐state continuous flow conditions (i.e., permeate flux of 80 L/m2‐h, and a pressure drop of 60 psi, which is typical for large‐volume applications). The main process parameters considered in this study were the QUAT‐to‐As ratio, pH, and the presence of background electrolytes (i.e., sulfate). The As removal efficiency improved with increasing pH, which is an advantage when the As‐tainted water is at an elevated pH since most adsorption‐based As removal methods perform better at lower pH levels.

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Point-of-Use Drinking Water Treatment Systems and Their Performance in Removal of Emerging Contaminants

Reddy¹,

Barbhuiya²,

Singh³

2021

Energy, Environment, and Sustainability

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Design of a membrane facility for water potabilization and its application to Third World countries

Cited by 32 publications

References 0 publications

Influence of Film Stability and Aging of Plasma Polymerized Allylamine Coated Quartz Particles on Humic Acid Removal

Influence of Film Stability and Aging of Plasma Polymerized Allylamine Coated Quartz Particles on Humic Acid Removal

Pilot‐scale study of Polyelectrolyte‐Enhanced UF for arsenic removal

Point-of-Use Drinking Water Treatment Systems and Their Performance in Removal of Emerging Contaminants

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