Temporal Changes of Water Quality Parameters in Rupa Lake and their Impact on Productivity

Knowledge on nutrient dynamics of the lake provide basis for modality and extent of exploitation of fishery resources. Therefore, a long-term data of physico-chemical parameters was analyzed for the assessment of changing aquatic environment and its impact on aquatic biodiversity. The physical and chemical properties of water have been changed over 14 years (1994 to 2007). Increase in mean annual concentrations of dissolved oxygen in recent years (2002 to 2007) were recorded in the lake, which indicate improvement in water quality due to lake restoration. Annual mean pH levels were not consistent to produce specific trends. The pH of the water increased from 1994 to 2002, and then decreased continuously in later period. Water transparency increased with the decreased chlorophyll 'a' concentration during 1999 to 2002 due to degraded condition. The higher concentrations (0.010- 0.017 mgl-1) of soluble reactive phosphorous (SRP- PO4) were recorded during 1994 to 2000, later SRP concentration (0.003-0.012 mgl-1) tend to reduce. Effect of fluctuation in the physico-chemical properties on the lake productivity in terms of fish yield was assessed.

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Physico-chemical properties of Dhepa River in Dinajpur District of Bangladesh

Journal of Environmental Science and Natural Resources ◽

10.3329/jesnr.v6i1.22041 ◽

2015 ◽

Vol 6 (1) ◽

pp. 59-67

Author(s):

K Rakiba ◽

Z Ferdoushi

Keyword(s):

Water Quality ◽

Dissolved Oxygen ◽

Ph Value ◽

Sampling Site ◽

Chemical Properties ◽

Quality Parameters ◽

P Concentration ◽

Physical Chemical ◽

Physico Chemical ◽

Buffer Condition

Among different water quality parameters dissolved oxygen, transparency, pH, PO4-P and depth varied significantly among the sampling sites. The pH value in the present investigation remained a buffer condition (6.50- 7.90). Dissolved oxygen was ranges from 3.80 to 11.60 mg/l throughout the study periods. PO4-P concentration was observed highest (0.30 mg/l) in sampling site 2. On the basis of physical, chemical aspects sampling site 3 and sampling site 5 (situated in gosaipur and chandandoho) found in better condition in terms of limnological aspects. However, it could be concluded that Dhepa River will play important role in riverine fisheries and for further fisheries management.DOI: http://dx.doi.org/10.3329/jesnr.v6i1.22041 J. Environ. Sci. & Natural Resources, 6(1): 59-67 2013

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Physico-Chemical Properties of Antiseptics in Surgery: What is not Taken into Account in Treating Long-Term Non-Healing Wounds

Creative Surgery and Oncology ◽

10.24060/2076-3093-2021-11-3-256-259 ◽

2021 ◽

Vol 11 (3) ◽

pp. 256-259

Author(s):

V. P. Bodduluri ◽

K. G. Gurevich ◽

A. L. Urakov

Keyword(s):

Chemical Properties ◽

Local Effect ◽

Local Temperature ◽

Leading Role ◽

Physico Chemical ◽

Purulent Wounds ◽

Healing Wounds ◽

Alkaline Activity ◽

Physical And Chemical

The treatment of long-term non-healing wounds in the conditions of purulent surgery departments, widely uses solutions of chemotherapeutic and antiseptic agents. The most common are the solutions of 3–6 % hydrogen peroxide and solutions of 2–10 % sodium chloride. As a rule, solutions of these drugs are used to treat non-healing, particularly, purulent wounds, bedsores and trophic ulcers. Therefore, solutions are injected into the wound area repeatedly in the form of course therapy. The findings show that the mechanism of action of these drugs and the effect of treating long-term non-healing wounds is largely determined by such physical and chemical factors of their local interaction as concentration of the main ingredients, osmotic, alkaline activity and local temperature. The findings point out the leading role of the local temperature and the dependence of the local effect on the concentration. They describe the essence of the innovative method of treatment.

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Temporal Variation of Drinking Water Quality Parameters for Sulaimani City, Kurdistan Region, Iraq

UHD Journal of Science and Technology ◽

10.21928/uhdjst.v4n2y2020.pp99-106 ◽

2020 ◽

Vol 4 (2) ◽

pp. 99

Author(s):

Yaseen Ahmed Hamaamin ◽

Jwan Bahadeen Abdullah

Keyword(s):

Water Quality ◽

Drinking Water ◽

Water Samples ◽

Chemical Properties ◽

Quality Parameters ◽

Drinking Water Quality ◽

World Health ◽

Quality Of Water ◽

Physical And Chemical

Water is vital for all forms of life on earth. Assessing the quality of water especially drinking water is one of the important processes worldwide which affect public health. In this study, the quality of drinking water in Sulaimani City is monitored for a study period of 1 year. A total number of 78 water samples were collected and analyzed for 17 physical and chemical properties of water supply system to the city. Samples of water are collected from the three main sources of drinking water for Sulaimani City (Sarchnar, Dukan line-1, and Dukan line-2) from February to August 2019. The results of physical and chemical parameters of collected water samples were compared with the World Health Organization and Iraqi standards for drinking water quality. The results of this study showed that mostly all parameters were within the standards except the turbidity parameter which was exceeded the allowable standards in some cases. This research concluded that, in general, the quality of drinking water at the three main sources of Sulaimani City is suitable and acceptable for drinking.

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Study of Rural Groundwater Quality in Brestea Village, Romania

“Agriculture for Life Life for Agriculture” Conference Proceedings ◽

10.2478/alife-2018-0059 ◽

2018 ◽

Vol 1 (1) ◽

pp. 393-398

Author(s):

Maria Popa ◽

Gabriela-Alina Dumitrel ◽

Ioana Glevitzky ◽

Mirel Glevitzky ◽

Dorin Popa

Keyword(s):

Water Quality ◽

Drinking Water ◽

Chemical Properties ◽

Chemical Parameters ◽

Limit Values ◽

Physico Chemical ◽

Physical And Chemical Parameters ◽

Nitrite Nitrate ◽

Physical And Chemical

Abstract Water is a social requirement and an important factor in the ecological balance. Water from wells is good for direct consumption if the soil is not contaminated. The quality of drinking water is regulated by Law no. 458/2002 (transposing the Directive 98/83/EC on the quality of drinking water). The aim of this paper was to assess the physicochemical qualities of groundwaters from Brestea village, commune Denta, Timis County. The water samples were taken in 2015 from 10 functional wells. For the source whose physical and chemical parameters have exceeded the limit values, the monthly monitoring of the water quality (microbiological and physico-chemical properties) has been performed for 2 years. At the same time, the pH of the soil near the water sources was also measured. The results highlighted a good connection between the microorganisms from water and the nitrite, nitrate and ammonium content of water. The information can be further used to identify and eliminate the specific pollutants, areas and pollution sources.

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Physical and Chemical Properties of Adhesives Based on Geocement for Restoration and Rehabilitation of Building Materials

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.688.123 ◽

2013 ◽

Vol 688 ◽

pp. 123-129 ◽

Cited By ~ 1

Author(s):

Grigorii Vozniuk ◽

Еlena Kаvalerova ◽

Pavel Vasiljevich Krivenko ◽

Оleg Petropavlovsky

Keyword(s):

Mechanical Properties ◽

Bond Strength ◽

Building Materials ◽

Chemical Properties ◽

Physical And Chemical Properties ◽

Physico Chemical ◽

User Friendly ◽

Physical And Chemical ◽

And Chemical Properties

This paper covers the results of study of physico-chemical and mechanical properties of the adhesives based on geocements which have a number of advantageous properties, among them: high compressive and bond strength in the conditions of long-term exposure of various factors, excellent durability, etc. These adhesives are environmentally and user-friendly and safety, their cost is compatible to the known-in-the-art analogs. The results of study suggested to draw a conclusion that they could be successfully used for rehabilitation and restoration of the building materials such as concrete, ceramics, natural stone.

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Investigation of Some Water Quality Parameters of Pond Water under Mymensingh Municipality

Journal of Environmental Science and Natural Resources ◽

10.3329/jesnr.v8i1.24677 ◽

2015 ◽

Vol 8 (1) ◽

pp. 85-89

Author(s):

F Zannat ◽

MA Ali ◽

MA Sattar

Keyword(s):

Water Quality ◽

Water Samples ◽

Chemical Properties ◽

Pond Water ◽

Quality Parameters ◽

Water Quality Parameters ◽

Urban Region ◽

Mn Toxicity ◽

Ph Values ◽

Drinking Water Standard

A study was conducted to evaluate the water quality parameters of pond water at Mymensingh Urban region. The water samples were collected from 30 ponds located at Mymensingh Urban Region during August to October 2010. The chemical analyses of water samples included pH, EC, Na, K, Ca, S, Mn and As were done by standard methods. The chemical properties in pond water were found pH 6.68 to 7.14, EC 227 to 700 ?Scm-1, Na 15.57 to 36.00 ppm, K 3.83 to 16.16 ppm, Ca 2.01 to 7.29 ppm, S 1.61 to 4.67 ppm, Mn 0.33 to 0.684 ppm and As 0.0011 to 0.0059 ppm. The pH values of water samples revealed that water samples were acidic to slightly alkaline in nature. The EC value revealed that water samples were medium salinity except one sample and also good for irrigation. According to drinking water standard Mn toxicity was detected in pond water. Considering Na, Ca and S ions pond water was safe for irrigation and aquaculture. In case of K ion, all the samples were suitable for irrigation but unsuitable for aquaculture.J. Environ. Sci. & Natural Resources, 8(1): 85-89 2015

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Groundwater physico-chemical properties and water quality changes in shallow aquifers in arid saline wetlands, Ouargla, Algeria

Applied Water Science ◽

10.1007/s13201-021-01415-3 ◽

2021 ◽

Vol 11 (5) ◽

Author(s):

Fethi Medjani ◽

Mohamed Djidel ◽

Sofiane Labar ◽

Louiza Bouchagoura ◽

Chouaib Rezzag Bara

Keyword(s):

Water Quality ◽

Chemical Properties ◽

High Water ◽

Quality Changes ◽

Shallow Aquifers ◽

Shallow Water Table ◽

Chemical Mechanisms ◽

Desert Region ◽

Physico Chemical ◽

Hypersaline Water

AbstractShallow aquifers are vulnerable to natural geogenic processes as well as anthropogenic influences, and this is especially apparent in desert regions. Within arid and hyperarid climates, evaporation is a controlling hydrologic process leads to an important increase in the concentration of dissolved minerals of both surface water and groundwater. In groundwater, this increase is not only dependent on shallow water table depth, but also on the hydraulic properties of sediments present within the unsaturated zone of the aquifer itself. The main objective of this research is to investigate possible mechanisms that might influence water quality changes under seasonal conditions in shallow aquifers situated within the Saharan desert region of Algeria. In this work, we focus on observed changes in hydrogeochemical characteristics, and the possible responsible processes. Under arid conditions, high water mineralization results in hypersaline water or brine solution formation within shallow aquifers. Due to active physico-chemical mechanisms such as Na+/Ca2+ ion exchange, the successive precipitation of calcite, gypsum, mirabilite or blœdite and halite is induced. Biological processes were also observed as prevalent; evidenced by large measured variations in CO2 load concentrations. These processes contributed to an inverse relationship between CO2 and O2 concentrations within the shallow aquifers studied.

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Treated wastewater irrigation effects on soil hydraulic conductivity and aggregate stability of loamy soils in Israel

Journal of Hydrology and Hydromechanics ◽

10.1515/johh-2015-0010 ◽

2015 ◽

Vol 63 (1) ◽

pp. 47-54 ◽

Cited By ~ 23

Author(s):

Karsten Schacht ◽

Bernd Marschner

Keyword(s):

Hydraulic Conductivity ◽

Chemical Properties ◽

Aggregate Stability ◽

Treated Wastewater ◽

Soil Aggregate Stability ◽

Irrigation Effects ◽

Physical And Chemical ◽

The Impact

Abstract The use of treated wastewater (TWW) for agricultural irrigation becomes increasingly important in water stressed regions like the Middle East for substituting fresh water (FW) resources. Due to elevated salt concentrations and organic compounds in TWW this practice has potential adverse effects on soil quality, such as the reduction of hydraulic conductivity (HC) and soil aggregate stability (SAS). To assess the impact of TWW irrigation in comparison to FW irrigation on HC, in-situ infiltration measurements using mini disk infiltrometer were deployed in four different long-term experimental orchard test sites in Israel. Topsoil samples (0-10 cm) were collected for analyzing SAS and determination of selected soil chemical and physical characteristics. The mean HC values decreased at all TWW sites by 42.9% up to 50.8% compared to FW sites. The SAS was 11.3% to 32.4% lower at all TWW sites. Soil electrical conductivity (EC) and exchangeable sodium percentage (ESP) were generally higher at TWW sites. These results indicate the use of TWW for irrigation is a viable, but potentially deleterious option, as it influences soil physical and chemical properties.

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Nutrient cycling differs between cropped soils with century-old and recently pyrolyzed biochar

10.5194/egusphere-egu21-15676 ◽

2021 ◽

Author(s):

Victor Burgeon ◽

Julien Fouché ◽

Sarah Garré ◽

Ramin Heidarian-Dehkordi ◽

Gilles Colinet ◽

...

Keyword(s):

Nutrient Cycling ◽

Soil Solution ◽

Nutrient Dynamics ◽

Chemical Properties ◽

Crop Productivity ◽

Nutrient Concentrations ◽

Soil Productivity ◽

Long Term Effects ◽

Mitigation And Adaptation

The amendment of biochar to soils is often considered for its potential as a climate change mitigation and adaptation tool through agriculture. Its presence in tropical agroecosystems has been reported to positively impact soil productivity whilst successfully storing C on the short&#8201;and long-term. In temperate systems, recent research showed limited to no effect on productivity following recent biochar addition to soils. Its long-term effects on productivity and nutrient cycling have, however, been overlooked yet are essential before the use of biochar can be generalized.Our study was set up in a conventionally cropped field, containing relict charcoal kiln sites used as a model for century old biochar (CoBC, ~220 years old). These sites were compared to soils amended with recently pyrolyzed biochar (YBC) and biochar free soils (REF) to study nutrient dynamics in the soil-water-plant system. Our research focused on soil chemical properties, crop nutrient uptake and soil solution nutrient concentrations. Crop plant samples were collected over three consecutive land occupations (chicory, winter wheat and a cover crop) and soil solutions gathered through the use of suctions cups inserted in different horizons of the studied Luvisol throughout the field.Our results showed that YBC mainly influenced the soil solution composition whereas CoBC mainly impacted the total and plant available soil nutrient content. In soils with YBC, our results showed lower nitrate and potassium concentrations in subsoil horizons, suggesting a decreased leaching, and higher phosphate concentrations in topsoil horizons. With time and the oxidation of biochar particles, our results reported higher total soil N, available K and Ca in the topsoil horizon when compared to REF, whereas available P was significantly smaller. Although significant changes occurred in terms of plant available nutrient contents and soil solution nutrient concentrations, this did not transcend in variations in crop productivity between soils for neither of the studied crops. Overall, our study highlights that young or aged biochar behave as two distinct products in terms of nutrient cycling in soils. As such the sustainability of these soils differ and their management must therefore evolve with time.

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