Behavior of natural radionuclides in wastewater treatment plants

Camacho, A.; Montaña, M.; Vallés, I.; Devesa, R.; Céspedes-Sánchez, Raquel; Serrano, Isabel; Blàzquez, S.; Barjola, V.

doi:10.1016/j.jenvrad.2012.02.005

Cited by 7 publications

(4 citation statements)

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“…in water-bodies and soil which inadvertently results into a prolonged health problem in both human and animals via enhancing radiation burden of the entire ecosystem. Most importantly, the needs to recover limited precious and expensive substances which oen get lost through the generated wastes and the demand for wastewater reuse 3 have always been the concern of the scientists and engineers. For safer and effective management, wastewaters containing radioactive materials and heavy metals are of particular concern due to their behaviours within the environment and associated health implications upon exposure to human and animals.…”

Section: Introductionmentioning

confidence: 99%

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Influence of adsorption parameters on cesium uptake from aqueous solutions- a brief review

et al. 2015

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Due to rapid population growth, technological advancement and industrial revolution, the rate of generated waste effluents has become a grave concern. Cesium which possesses high fission yield is generally transferred to liquid wastes especially those emanated from the nuclear power plants, reprocessing of spent fuels, nuclear weapon testing and radionuclides production facilities for medical applications etc. Radiocesium ( 137 Cs) is one of the hazardous radionuclides creates adverse effects on human health and environment.Due to its physical (T 1/2 =30.17 y) and chemical characteristics (alkalinity, solubility etc.), it can be easily assimilated by the living organisms. As a result, the removal of cesium from wastewater is imperative from the health point of view. Several techniques are implemented but in recent time, adsorption has been gaining increasing attention to the scientific community owing to a number of reasons. Hence, this paper presents an overview on sorption of cesium from wastewaters. Consequently, several critical parameters such as sorption capacity, percentage efficiency and the influence of several factors on cesium uptake by various adsorbents have been reviewed in details. 6 Adsorption/ ion exchange of cesium ions onto synthesized and natural adsorbentsThis is a method by which a sorbate is removed or accumulated on the immobile solid from its liquid or gaseous surroundings, and usually referred to as liquid-solid interaction.Normally, this process occurs at the phase of the sorbent and so, it is a surface-based phenomenon [40] . Adsorption can take different dimensions, if the process is initiated as a result of weak intermolecular forces (Van der Waals interactions) then it is specifically called physisorption and this force being weak in nature results into reversible adsorption, but if occurs due to the formation of chemical bonds between the molecules of adsorbate and the adsorbent it is known as chemosorption. Ion exchange on the other hand is a reversible chemical process in which an ion from solution exchanges with similarly charged ion attached to the adsorbent, the solid particle [40] . Due to their common features, adsorption and ion exchange are grouped together as sorption processes for effective sequester of toxins from waste/drinking waters [41,42] . Adsorption is recognized as an effective and economic method for the removal of radionuclides compared to the other approaches owing to a number of reasons such as; the ease of design and operation, adsorbate-specificity, better treatment with no/little secondary waste generation, possibility of using at low concentration, high efficient performance, ease of regeneration and reuse, suitability for both batch and column studies, and the availability of the adsorbents [43] . Normally, a good adsorbent must have a large surface area, good macroporous structure and be stable under chemical, radiation and thermal reaction conditions. However, the behaviour and efficiency of adsorbents can also be influenced by the condition of the so...

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Section: Introductionmentioning

confidence: 99%

“…Adsorbent amount: 0.1 g. Initial concentration: 10 ml of 10 À4 mol L À1 treatment condition: pH 6.0 and 25 C temperature. Studied parameters: effects of pH(1)(2)(3)(4)(5)(6)(7)(8)(9), temperature(25-65 C), contact time (5-120 min) and interfering competing ions. Column test was performed to estimate the dynamic sorption capacity at 5 and 100% breakthroughs.…”

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confidence: 99%

Influence of adsorption parameters on cesium uptake from aqueous solutions- a brief review

et al. 2015

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“…These analyses show a statistically significant correlation between the physicochemical parameters (pH, TDS, and DO) and 226Ra, confirming that the behaviour of the radiation emitted by the different radionuclides depends on the overlying soil materials, the chelating agents, the physicochemical properties, and the type of rock (Belivermis et al 2010 ). The correlation between COD and Ra-226 and K-40 suggests that more oxygen is needed to oxidize, indicating the possibility of additional oxidation (Camacho et al 2012 ). Furthermore, there was a positive correlation between TP and K-40 and a weakly negative correlation with Ra-226 and Th-232.…”

Section: Relationships Between Environmental Variables Radionuclides ...mentioning

confidence: 99%

Influence of the industrial pollutant on water quality, radioactivity levels, and biological communities in Ismailia Canal, Nile River, Egypt

Imam,

El-Shamy,

Abdelaziz

et al. 2024

Environ Sci Pollut Res

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In the twenty-first century, numerous forms of pollution have adversely impacted freshwater and the entire aquatic ecosystem. The higher population density in urban areas also contributes to increased releases of substances and thermal contaminants, significantly stressing the ecosystem of industrial companies. This study aimed to assess the potential pressure of industrial and municipal activities on water quality, radioactivity levels, and biological diversity, focusing on the consequences of radionuclides on periphytic diatom communities. Furthermore, the environmental impact of pollutants will be evaluated to monitor the ecological condition of the Ismailia Canal. Chemical analyses employed various instruments and methods to identify and quantify matter, with radionuclide elements measured by gamma spectrometry and diatoms counted and identified by inverted microscopy. Our results revealed that the canal was classified as excellent for irrigation, aquatic life, and drinking water based on FAO, CCME, and EWQS water quality indices, with high nutrient levels at Abu Za’baal fertilizer company. The activity concentration of 226Ra-series, 232Th-series, and 40K in the water and sediment samples for two seasons was within the guideline values, except for a few stations in the zone [B] (the industrial zone). Fertilizer samples (raw material) showed a high value of the 226Ra-series activity. Diatom community structure significantly varied across the different canal locations regarding the presence or absence of industrial activities, with no discernible variations between the study seasons. A specific variety of algal species was found to be predominant at the highest radioactive sites. Redundancy analysis (RDA) showed a significant correlation between parameters (pH, Na, TDS, PO4, SO4, SiO2, K, and CO3), radionuclides, environmental conditions, and the composition of the diatom community, especially in the area affected by industrial discharges. Moreover, the radiological hazard index in water and sediment remained below the maximum for two seasons. This research provides valuable data and information for communities and decision-makers, suggesting the strategic use of phycoremediation as a water biotreatment process to protect the valuable economic resources of the Ismailia Canal.

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“…Radionuclides are a group of contaminants that can be present in environmental samples such as river water, lake water, and even waters from water resource recovery facilities, as demonstrated in various studies (Baeza et al, 2012;Camacho et al, 2012;Desideri et al, 2007;Holm et al, 1984;Montaña et al, in press;Palomo et al, 2010). The presence of this kind of contaminant can be attributed to different factors, such as erosion or chemical weathering of naturally occurring mineral deposits, although human activity (e.g., mining, industrial activities that use manufactured radioactive materials) can also contribute to their presence in water.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Use of Reverse Osmosis to Eliminate Natural Radionuclides from Water Samples

Nieto

Palomo

Ruana³

et al. 2013

Water Environment Research

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The objective of drinking water treatment plants (DWTP) is to supply the population with tap water that is in optimal condition and in compliance with water quality regulations. In the DWTP of L'Ampolla (Tarragona, Spain), slightly high values of gross alpha activity and the amount of salts in the raw water have been observed. Conventional treatment has reduced these levels only minimally. This study tested a tertiary treatment based on reverse osmosis is tested in an industrial pilot plant (240 m3/day) The efficiency of this pilot plant to reduce the gross alpha and beta activities and the activity of some individual radioisotopes (U(238), U(234), U(235) and Ra(226)) was tested. Results showed that the elimination of alpha emitters was greater than 90%, whereas the elimination of beta emitters was about 35%. Overall, the data provided evidence that the pilot plant is effective for removing different radionuclides that can be present in the incoming water treated. Therefore, tertiary treatment based on reverse osmosis has a positive effect in water quality.

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Behavior of natural radionuclides in wastewater treatment plants

Cited by 7 publications

References 10 publications

Influence of adsorption parameters on cesium uptake from aqueous solutions- a brief review

Influence of adsorption parameters on cesium uptake from aqueous solutions- a brief review

Influence of the industrial pollutant on water quality, radioactivity levels, and biological communities in Ismailia Canal, Nile River, Egypt

Evaluation of the Use of Reverse Osmosis to Eliminate Natural Radionuclides from Water Samples

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