Improving the assessment of polluted sites using an integrated bio-physico-chemical monitoring framework

Chemosphere ◽  
2021 ◽  
pp. 133344
Author(s):  
Anuradha Garg ◽  
Brijesh K. Yadav ◽  
Diganta B. Das ◽  
Paul J. Wood
Keyword(s):  
Chemical Monitoring ◽  
Physico Chemical ◽  
Monitoring Framework ◽  
Polluted Sites

Interaction between Solvatochromic Dyes and Water Sampled from a Natural Source Treated with High Dilutions of Phosphorus

Homeopathy ◽  
2020 ◽  
Vol 109 (03) ◽  
pp. 126-132
Author(s):  
Ana Carla C. Aparicio ◽  
Larissa Helen S. de Oliveira ◽  
Jefferson S. Silva ◽  
Cideli P. Coelho ◽  
Sonia Regina Pinheiro ◽  
...  
Keyword(s):  
Water Source ◽  
Chemical Monitoring ◽  
Lake System ◽  
Solvatochromic Dyes ◽  
Physico Chemical ◽  
Untreated Water ◽  
Before And After ◽  
High Dilutions ◽  
Methylene Violet ◽  
Solvatochromic Dye

Abstract Background Highly diluted and succussed solutions interact with solvatochromic dyes, indicating that changes in solvent and solute polarity could be related to their mechanism of action. It is not known, however, how the activity associated with succussed high dilutions is transferred to untreated water and what the limits of this process are. Aims The aims of the present study were to ascertain whether a succussed high dilution of phosphorus (1.5 × 1−59 M; Phos 30cH) seeded into a natural water source that fed a fjord and two connected lakes could propagate itself through the lake system (total volume 2200 m3) and, moreover, whether the process could be tracked using solvatochromic dyes. Methods Samples of water were collected before and after seeding, at different times and places throughout the lake system. Controls comprised water taken from an untreated and adjacent, but independent, lake (1385 m3). Results Water samples taken up to 72 hours after the source treatment produced significant increases (p ≤ 0.03) in the absorbance of the solvatochromic dye methylene violet (MV), while samples from the control lake produced no changes. Conclusions The study indicates that activity associated with Phos 30c can propagate itself through large volumes of water, causing changes throughout a whole connected lake system, and that these changes can be tracked using the solvatochromic dye MV. This in turn means the use of homeopathic medicines in large volumes of drinking water, in farming and ecological contexts, now has the potential to be assessed with physico-chemical monitoring.

Physico-chemical monitoring of biodegradation of furfural from oil industry effluents from the Arzew refinery (Oran) Algeria

2022 ◽  
Vol 11 (6) ◽  
pp. 667-675
Author(s):  
Amina-Afaf MOUFFAK
Keyword(s):  
Biological Treatment ◽  
Oxygen Demand ◽  
Oil Industry ◽  
Petroleum Products ◽  
Wash Water ◽  
Treatment Level ◽  
Chemical Monitoring ◽  
Pollution Problem ◽  
Physico Chemical ◽  
Direct Discharge

Furfural is one of the petroleum products posing a potential danger to the environment and human health. However, the decontamination of these pollutants released into the environment is primarily governed by biodegra-dation processes. This study is based on biodegradation kinetics at increasing concentrations of furfural by natural mixed culture in order to assess the potential of this process in the elimination of furfural from petrochemical effluents from the ARZEW refinery. This biodegradation was measured through physicochemical parameters such as pH, electrical conductivity, con-centration of hydrocarbons, the chemical oxygen demand (COD), biochemi-cal oxygen demand (BOD5) and the concentration of furfural. The results obtained show at a concentration of 250ppm of injected furfural: a decrease in pH 4.9 and an increase in other parameters (conductivity 3450 μS.cm-1, HC 102 mg / l; furfural 210 ppm, COD 327mg / l, BOD5 98mgO2 / l. The study findings indicated that the injection of these effluents with concentrations greater than 180 ppm leads to values of pH, EC, HC, Furfural, COD, BOD5 which do not comply with direct discharge standards and disrupt biological treatment. The high levels of furfural not only cause a pollution problem but can also disrupt the functioning of bacteria at the biological treatment level. Therefore, dilution with the filtration wash water before switching to biologi-cal treatment is recommended in order to reduce the concentrations below 180 ppm.

scholarly journals Physico-chemical monitoring and toxicity assessment of lead in air samples of Bhopal

2006 ◽  
Vol 1 (1) ◽  
pp. 89-90
Author(s):  
VINITA JAIN ◽  
PRAVEEN JAIN ◽  
IRFAN AHMED ◽  
SHRADDHA SHARMA
Keyword(s):  
Toxicity Assessment ◽  
Chemical Monitoring ◽  
Air Samples ◽  
Physico Chemical ◽  
Lead In Air

scholarly journals Physico Chemical Monitoring Tests of Geothermal Water Production Wells

2019 ◽  
Vol 70 (11) ◽  
pp. 3783-3787
Author(s):  
Mioara Sebesan ◽  
Gabriela Elena Badea ◽  
Radu Sebesan ◽  
Ilona Katalin Fodor ◽  
Simona Bungau ◽  
...  
Keyword(s):  
Chemical Properties ◽  
Geothermal Waters ◽  
Chemical Monitoring ◽  
Geothermal Fluids ◽  
Industrial Buildings ◽  
Physico Chemical ◽  
Production Wells ◽  
Deep Reservoir ◽  
Physical And Chemical

This paper presents a study of the physico-chemical properties of geothermal fluids, coming from some wells in Sacuieni, Bihor County, Romania. The thermal energy of the geothermal waters studied is used for heating some industrial buildings, greenhouses, and administrative buildings. Continuous monitoring of physical and chemical characteristics of geothermal waters is needed. Based on this fact, a classification of these waters has been made according to their chemical composition. Using a silica-enthalpy thermodynamic model, it was possible to estimate the deep reservoir temperature, and compare it with the temperatures at depth, calculated by the silica (quartz and chalcedony) and Na+/K+ geothermometers. The WATCH program is used to estimate the mineral deposits that may accumulate due to boiling and cooling of the geothermal fluid when it is used in heat exchangers The results are confirmed by XRD spectrometric and thermogravimetric analyses.

The response of macroinvertebrate community taxa and functional groups to pollution along a heavily impacted river in Central Europe (Bílina River, Czech Republic)

Biologia ◽  
2012 ◽  
Vol 67 (1) ◽  
Author(s):  
Claus Orendt ◽  
Georg Wolfram ◽  
Zdeněk Adámek ◽  
Pavel Jurajda ◽  
Mechthild Schmitt-Jansen
Keyword(s):  
Czech Republic ◽  
Community Analysis ◽  
Organic Pollution ◽  
Taxonomic Composition ◽  
Macroinvertebrate Communities ◽  
Functional Community ◽  
Sampling Campaign ◽  
Physico Chemical ◽  
Polluted Sites ◽  
Bílina River

AbstractMacroinvertebrate communities were investigated along a gradient of heavy industrial and municipal pollution in the highland Bílina River (Czech Republic). Physico-chemical determinants and ions were monitored and community analysis performed focusing on taxonomic composition, ecological functioning (feeder and dweller guilds) and water quality metrics, including saprobity index, BMWP and diversity. Impacted sites differed significantly from reference and from recovered stretches. Chemical data revealed two main pollution factors, (1) a “salinity determinant”, described best by conductivity and SO42−, and (2) an “organic pollution determinant”, represented best by O2 concentrations and NO2−, all varying locally and temporally. Some metrics and taxa showed significant correlations to abiotic parameters. Functional communities showed a stronger relationship to the “organic pollution determinant”, suggesting that elevated organic pollution had a dominating influence on functional community metrics; though other variables may also have an influence in this multistress environment. On the other hand, there were indications that the taxonomic community was more influenced by ion concentrations (“salinity determinant”). The gradient from reference sites to polluted sites was weaker in the final sampling campaign. The results presented here can be used as a reference for assessing future changes in environmental impact from pollution, being finer and more detailed than assessment according to the EU’s WFD.

A tiered, integrated biological and chemical monitoring framework for contaminants of emerging concern in aquatic ecosystems

2015 ◽  
Vol 12 (3) ◽  
pp. 540-547 ◽  
Author(s):  
Keith A Maruya ◽  
Nathan G Dodder ◽  
Alvine C Mehinto ◽  
Nancy D Denslow ◽  
Daniel Schlenk ◽  
...  
Keyword(s):  
Aquatic Ecosystems ◽  
Contaminants Of Emerging Concern ◽  
Chemical Monitoring ◽  
Monitoring Framework

scholarly journals Every Start is Challenging: Fitting A New Artificial Lake Into the Landscape, Zalakaros, Hungary

2018 ◽  
Vol 11 (1-2) ◽  
pp. 17-26
Author(s):  
Zsombor Boromisza ◽  
Ferenc Szilágyi ◽  
Béla Csányi ◽  
Szilvia Mészáros ◽  
Attila Gergely
Keyword(s):  
Planning Process ◽  
Algal Growth ◽  
High Water ◽  
Cold Weather ◽  
Fish Stock ◽  
Artificial Lake ◽  
Chemical Monitoring ◽  
The Past ◽  
Physico Chemical ◽  
Maintenance Practice

Abstract The aim of this study is to conclude the experiences of the maintenance practice of an artificial thermal lake. The first years (2015-2017) of the development of the lake were analysed and evaluated along the following questions: a) What kind of design processes and maintenance interventions are related to the process of fitting the lake into the landscape? b) How have the ecological conditions of the lake evolved in the past period (zonation, succession, plantation and colonization)? c) Which general experiences could be gained from the operation of this artificial thermal lake this far? The authors of the present study were already engaged in the planning process, participating in the preparation of four different design documentations. The planting design and the maintenance instructions were based on a physico-chemical monitoring, phytoplankton, zooplankton and macroinvertebrate sampling, and machrophyte assessment. The significant processes during the three years of the lake are presented by functional groups of biota, separately assessing the characteristics of the changes of macrophytes. In 2017 an individual macroinvertebrate assessment was done, moreover a fish die-off occurred in August 2017, which are mentioned separately as well. The data in total suggested that the water of the lake is highly hypertrophic, further machrophyte introduction can prevent the plant nutriments to be absorbed by algae. Partly the algal growth but also the unlucky coincidence of other factors (e.g. high water temperature, cold weather front, maintenance problems) led to the die-off of the spontaneously overpopulated fish stock in 2017.

scholarly journals PHYSICO-CHEMICAL MONITORING OF LAKE WATER DURING IDOL IMMERSION

2018 ◽  
Vol 6 (7) ◽  
pp. 159-163
Author(s):  
Bharti Dwivedi ◽  
Suchitra Banerjee
Keyword(s):  
Water Quality ◽  
Total Dissolve Solid ◽  
Total Suspended Solid ◽  
Total Solid ◽  
Suspended Solid ◽  
Quality Parameters ◽  
Chemical Monitoring ◽  
Physico Chemical ◽  
Immersion Period ◽  
Idol Immersion

The present study concerns on physicochemical monitoring of the water quality nature and the extent of pollution in lake due to idol immersion. Pre-immersion and post immersion samples were collected from lake and analyzed for various water quality parameters such as pH, turbidity, total dissolve solid (TDS), total solid (TS) total suspended solid (TSS), conductivity phosphate, dissolved oxygen (DO), BOD, COD and oil & grease. The results were compared with standards prescribed by WHO and ISI. From the study, it has been found that the values of these parameters significantly increased during the immersion period and the declined in post immersion period. However the general trend observed was: immersion> Post immersion> pre immersion.The article focused on the main pollution which is caused by plaster of Paris idols and chemical paints by idol immersion during Ganesh festival.

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