Technology for Remediation and Disposal of Arsenic

Visoottiviseth, Pornsawan; Ahmed, Feroze

doi:10.1007/978-0-387-79284-2_4

Cited by 15 publications

(11 citation statements)

References 35 publications

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“…The maximum concentration of As was measured at 2 points in downstream of Gatsuurt River with values of 23.30 and 26.50 µg/l, respectively. We did not find a high As concentration in headwater Mongolian drinking water quality standard MNS 0900:2005 10.0 --of the station 83 has been described as bedrock at the significant depth is generally of granitic origin location with rock erosion products being loam, sandy loam, sand and gravel [19]. Therefore, there could be a natural enrichment of As besides anthropogenic influence.…”

Section: Resultsmentioning

confidence: 62%

Arsenic occurrence in water bodies in Kharaa river basin

et al. 2018

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Distribution of arsenic (As) and its compound and related toxicology are serious concerns nowadays. Gold mining activity is one of the anthropogenic sources of environmental contamination regarding As and other heavy metals. In Mongolia, the most productive gold mining sites are placed in the Kharaa river basin. A hundred water samples were collected from river, spring and deep wells in this river basin. Along with total As and its species-As(III) and As(V), examination of concentration levels of other key parameters, 21 heavy metals with pH, total hardness, electric conductivity, anion and cations, was also carried out. In respect to the permissible limit formulated by the Mongolian National Drinking water quality standard (MNS 0900:2005, As10 µg/l), the present study showed that most of samples were found no contamination. In Kharaa river basin, an average concentration of total As in surface water was 4.04 µg/l with wide range in 0.07−30.30 µg/l whereas it was 2.24 µg/l in groundwater. As analysis in surface water in licensed area of Gatsuurt gold mining showed a mean concentration with 24.90 µg/l presenting higher value than that of value in river basin by 6 orders of magnitude and it was 2 times higher than permissible level as well. In Boroo river nearby Boroo gold mining area, As concentration in water was ranged in 6.05−6.25 µg/l. Ammonia pollution may have present at estuary of Zuunmod river in Mandal sum with above the permissible level described in national water quality standard. Geological formation of the rocks and minerals affected to change of heavy metal concentration, especially As and uranium (U) at spring water nearby Gatsuurt-Boroo improved road.

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Section: Resultsmentioning

confidence: 62%

Arsenic occurrence in water bodies in Kharaa river basin

et al. 2018

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“…This shift reinforces reducing to oxidizing states of water, confirming arsenic removal via oxidation of Fe (II) and As (III) process (Yokota, 2004;Zhang, 2003). These oxidized species might coagulate by forming flocs and finally adsorb on the surfaces of gravel and sand particles (Haynes, 2015;Hussainuzzaman and Yokota, 2006;Visoottiviseth and Ahmed, 2009). So, arsenic is adsorbed on the surface of iron oxide by coagulation/ flocculation process.…”

Section: Resultsmentioning

confidence: 64%

Design of Gravel‐Sand Filter for Arsenic Removal: A Case Study of Muzaffargarh District in Pakistan

Abbas

Majeed

Ali

et al. 2018

Water Environment Research

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Arsenic decontamination of drinking water has grabbed significant attention due to arsenic's serious effects on health. A novel gravel-sand filter (GSF) holding zero-valent iron plates was designed and constructed in Muzaffargarh district (Pakistan) for arsenic removal from drinking water with lower iron concentration (0.3 ppm). The GSF efficiently removed arsenic up to 99.99% with long-term stability. The GSF provides 800 liters of arsenic-free drinking water in 39 hours with a rate of 2.5 L/h. A tentative mechanism for arsenic removal is evaluated and described on the basis of oxidation-coagulationadsorption processes. Chemical composition of underground water is also analyzed and discussed. This GSF design will open a new avenue for arsenic removal and can be extended to other parts of the world. Water Environ. Res., 90, 2106Res., 90, (2018.

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“…These technologies helps in arsenic remediation, including activated alumina, ion exchange, membrane filtration, reverse osmosis, modified coagulation-filtration, and also enhanced limesoftening. However, affected rural areas or developing areas need ideal and effective technology that should be versatile, low-cost, transferable and adoptable for both community application and household units (USEPA, 2000; Berg et al, 2006;Visoottiviseth and Ahmed, 2008).…”

Section: Table 1 List Of Countries Affected By Arsenic Contaminationmentioning

confidence: 99%

Arsenic Contaminated Groundwater in China and Its Treatment Options, a Review

Ahmed¹,

Zhou²,

Zhao³

et al. 2019

Appl. Ecol. Env. Res.

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A high concentration of arsenic in groundwater is a worldwide problem, high concentration of arsenic in groundwater has been documented as a major health issue around the globe. According to WHO standard, the maximum contamination level for total arsenic in water is 10 μg/L. China is one of the most affected country facing health issues because of arsenic contamination in groundwater that is often greater than established limits for human health. Although arsenic is present in several geographical regions in mainland China, Northern China has been identified as high-risk area. It has been estimated that 19.6 million people are at risk of being exposed to arsenic contaminated groundwaterespecially rural areas, as those communities use groundwater for drinking water and household chores. To overcome the aforementioned problem, it is important to know the actual concentration level of arsenic in China and introduce a strategy to remove arsenic contamination. This paper provides a comprehensive overview on arsenic contamination status, sources and exposure pathways in China. It also aims to review the arsenic removal technologies which are easily available. Furthermore, it can be a useful resource for researchers as well as policy makers to identify and investigate useful treatment options.

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Technology for Remediation and Disposal of Arsenic

Cited by 15 publications

References 35 publications

Arsenic occurrence in water bodies in Kharaa river basin

Arsenic occurrence in water bodies in Kharaa river basin

Design of Gravel‐Sand Filter for Arsenic Removal: A Case Study of Muzaffargarh District in Pakistan

Arsenic Contaminated Groundwater in China and Its Treatment Options, a Review

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