Removal of Arsenic from Water with Non-Thermal Plasma (NTP), Coagulation and Membrane Filtration

Back, Jan O.; Stadlmayr, Werner; Jabornig, Simon; Winkler, Florian; Winkler, Karl; Rupprich, Marco

doi:10.3390/w10101385

Cited by 20 publications

(6 citation statements)

References 21 publications

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“…A series of batch sorption experiments were carried out to explore the effect of SCB-BC, RH-BC, Th/SCB-BC, and Th/RH-BC under varying pH (3)(4)(5)(6)(7)(8)(9)(10), contact time (0-24 hr), sorbent dose (1-16 mg L − 1 ) and initial As(III) concentration (0.05-10 mg L − 1 ) under laboratory conditions. In 50 mL plastic centrifuge tubes, sorption experiments were performed using 0.01 M NaCl solution as background electrolyte.…”

Section: Batch Sorption Experimentsmentioning

confidence: 99%

“…Various conventional and traditional techniques are available to remediate As from As-contaminated water including ion exchange, electrochemical, precipitation, membrane separation and solvent extraction (Chen et al 2023, Back et al 2018, Chiban et al 2012). Most of these techniques incur substantial capital and operational costs, making them challenging for successful execution in developing countries.…”

Section: Introductionmentioning

confidence: 99%

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Enhanced capacity of thiol-functionalized sugarcane bagasse and rice husk biochars for arsenite sorption in aqueous solutions

hasan,

Niazi,

bibi

et al. 2024

Preprint

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Utilization of biowastes to produce biochars as sorbents to remove toxic elements from water represents an important pathway for aquatic ecosystem decontamination. Here we explored the significance of thiol-functionalization on sugarcane bagasse biochar (Th/SCB-BC) and rice husk biochar (Th/RH-BC) to enhance arsenite (As(III)) removal capacity from water and compared their efficiency with pristine biochars (SCB–BC and RH–BC). The maximum As(III) sorption was found on Th/SCB-BC and Th/RH-BC (2.88 and 2.51 mg g−1, respectively) compared to the SCB–BC and RH–BC (1.51 and 1.40 mg g−1). Relatively, greater percentage As(III) removal was observed with the Th/SCB–BC and Th/RH–BC (92% and 83%, respectively) at pH 7 compared to pristine SCB–BC and RH–BC (65% and 55%). Langmuir (R2 = 0.99) isotherm and pseudo–second order (R2 = 0.99) kinetic models provided the best fits to As(III) sorption data. Desorption experiments indicated that the regeneration ability of biochars was in the order of: Th/SCB–BC (88%) > Th/RH–BC (82%) > SCB–BC (77%) > RH–BC (69%) up to three sorption-desorption cycles. The FTIR spectroscopy and XPS results demonstrated that the thiol (S–H) surface functional groups were successfully grafted on the surface of biochars and enhanced As removal from water. Spectroscopic data indicated that functional groups, such as S–H, –OH, –COOH, C=O were involved in slightly enhanced As(III) sorption on thiol-engineered biochars. This study highlights that thiol-grafting on biochars, notably on SCB-BC, enhanced their ability to remove As from water, which can be used as an effective technique for the treatment of As from drinking water.

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Section: Batch Sorption Experimentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Enhanced capacity of thiol-functionalized sugarcane bagasse and rice husk biochars for arsenite sorption in aqueous solutions

hasan,

Niazi,

bibi

et al. 2024

Preprint

View full text Add to dashboard Cite

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“…It has been found that the best protocol enhancing seed vigor and germination performance of maize [16]. It has been found that 98% of arsenic from ground water has been removed by non-thermal plasma treated for 30 min and after coagulation and membrane filtration [17].…”

Section: Literature Reviewmentioning

confidence: 99%

Treatment of water using Arc discharge plasma in Patan area

Shrestha¹,

Joshi²,

Subedi

et al. 2022

Patan Prospective J.

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The quality of drinking water has been degraded and declining day by day and its impact is directly seen on human health and other organisms too. So, the way we want to solve this problem by using new technology which was not based on the Plasma Treatment. Plasma based technology which is one of the best and new technology it takes a short time for improvement of water quality. Water sample collected from various sources within Patan from different sources such as Jar water, Ground water, Tap water and Stone spout water. The concentration of ammonia in the Jar and Tap water increased at 10 seconds after the sample was treated with Plasma. The hardness of groundwater increased significantly in all time periods as compared to without treatment. Overall, the hardness of Tap water decreased when treated with Plasma. But in case of Stone Spout water, hardness increased during 5 and 15 seconds whereas it decreased at 10 seconds. The concentration of Chloride only decreased in case of Jar water whereas there was a significant increase in its amount in all other remaining samples in each time factors i.e., 5,10,15 seconds. By using this technology water quality can be improved within short time.

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“…The species of As in the groundwater contribute to the exposure risk, and the order of decreasing toxicity is R 3 As > H 3 AsO 3 > H 3 AsO 4 > R 4 As + > As 0 , where R is a proton or an alkyl group [3,4]. Several As removal technologies have been tested and implemented, such as adsorption (iron fillings, lignite, manganese ore), electrocoagulation [5], and filtration (modified ultrafiltration and nanofiltration) [6]. There is still much to cover when it comes to As pollution mapping, As remediation technology implementation, and research-driven policy-making in the country [7].…”

Section: Introductionmentioning

confidence: 99%

Spatiotemporal Variation of Groundwater Arsenic in Pampanga, Philippines

Solis

Macasieb

Parangat

et al. 2020

Water

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Several confirmed cases of arsenic (As) poisoning have been reported in Central Luzon, the Philippines, in recent years. There is a growing interest in As research in the Philippines due to the reported As poisoning cases. However, an extensive spatiotemporal As study has not been conducted. In this work, As concentration measurements were conducted in 101 wells in Guagua, Pampanga, in Central Luzon, the Philippines, from November 2018 to November 2019. The wells included 86 public hand pumps, 10 pumping stations, and 5 private, jet-powered pumps. Using hydride generation—inductively coupled plasma—optical emission spectroscopy (HG-ICP-OES), analysis of the wells in 12 barangays in Guagua revealed that 38.7% had average As concentrations beyond the 10 ppb limit with some wells having high Mn (4.0 ppm) and Fe (2.0 ppm) content as well. The high pH and reducing conditions in the wells in Guagua may have contributed to the persistence of As in the groundwater. The mean difference in wet season versus dry season As measurements were −4.4 (As < 10 ppb), −13.2 (10 to 50 ppb As), and −27.4 (As > 50 ppb). Eighty-three wells (82.2%) had higher As concentrations in the dry season, 8 wells (7.92%) had higher As concentrations in the wet season, 7 wells (6.93%) had no significant difference between the wet and dry season, and 3 wells had been decommissioned. These results indicate that there is a significant difference in As concentrations in the wet and dry seasons, and this could have implications in water treatment technology and policy implementation. The work resulted in the first year-long characterization of groundwater As in the Philippines.

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Removal of Arsenic from Water with Non-Thermal Plasma (NTP), Coagulation and Membrane Filtration

Cited by 20 publications

References 21 publications

Enhanced capacity of thiol-functionalized sugarcane bagasse and rice husk biochars for arsenite sorption in aqueous solutions

Enhanced capacity of thiol-functionalized sugarcane bagasse and rice husk biochars for arsenite sorption in aqueous solutions

Treatment of water using Arc discharge plasma in Patan area

Spatiotemporal Variation of Groundwater Arsenic in Pampanga, Philippines

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