Relationships of Heavy Metals in Natural Lake Waters with Physico-chemical Characteristics of Waters and Different Chemical Fractions of Metals in Sediments

2007 ◽  
Vol 188 (1-4) ◽  
pp. 181-193 ◽  
Author(s):  
Ajay P. Singh ◽  
Prakash C. Srivastava ◽  
Prashant Srivastava
Keyword(s):  
Heavy Metals ◽  
Chemical Characteristics ◽  
Chemical Fractions ◽  
Natural Lake ◽  
Physico Chemical ◽  
Lake Waters

scholarly journals Optimal Solutions for the Use of Sewage Sludge on Agricultural Lands

Water ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 585
Author(s):  
Catalina Iticescu ◽  
Puiu-Lucian Georgescu ◽  
Maxim Arseni ◽  
Adrian Rosu ◽  
Mihaela Timofti ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Sewage Sludge ◽  
Agricultural Production ◽  
Agricultural Land ◽  
Chemical Characteristics ◽  
Optimal Solutions ◽  
Physico Chemical ◽  
Agricultural Areas ◽  
The Impact ◽  
Made In

The use of sewage sludge in agriculture decreases the pressure on landfills. In Romania, massive investments have been made in wastewater treatment stations, which have resulted in the accumulation of important quantities of sewage sludge. The presence of these sewage sludges coincides with large areas of degraded agricultural land. The aim of the present article is to identify the best technological combinations meant to solve these problems simultaneously. Adapting the quality and parameters of the sludge to the specificity of the land solves the possible compatibility problems, thus reducing the impact on the environment. The physico-chemical characteristics of the fermented sludge were monitored and optimal solutions for their treatment were suggested so as to allow that the sludge could be used in agriculture according to the characteristics of the soils. The content of heavy metals in the sewage sludge was closely monitored because the use of sewage sludge as a fertilizer does not allow for any increases in the concentrations of these in soils. The article identifies those agricultural areas which are suitable for the use of sludge, as well as ways of correcting some parameters (e.g., pH), which allow the improvement of soil quality and obtained higher agricultural production.

scholarly journals Study of Physico-Chemical Characteristics of Wastewater in an Urban Agglomeration in Romania

2012 ◽  
Vol 2012 ◽  
pp. 1-10 ◽  
Author(s):  
Paula Popa ◽  
Mihaela Timofti ◽  
Mirela Voiculescu ◽  
Silvia Dragan ◽  
Catalin Trif ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Wastewater Treatment ◽  
Correlation Analysis ◽  
Inorganic Compounds ◽  
Chemical Characteristics ◽  
Spectrophotometric Methods ◽  
Physico Chemical ◽  
Wastewater Pollution ◽  
Biogenic Compounds

This study investigates the level of wastewater pollution by analyzing its chemical characteristics at five wastewater collectors. Samples are collected before they discharge into the Danube during a monitoring campaign of two weeks. Organic and inorganic compounds, heavy metals, and biogenic compounds have been analyzed using potentiometric and spectrophotometric methods. Experimental results show that the quality of wastewater varies from site to site and it greatly depends on the origin of the wastewater. Correlation analysis was used in order to identify possible relationships between concentrations of various analyzed parameters, which could be used in selecting the appropriate method for wastewater treatment to be implemented at wastewater plants.

Physico-Chemical Analysis of Selected Potable Water in Parts of Mamit District, Mizoram

2021 ◽  
Vol 9 (1) ◽  
pp. 77-82
Author(s):  
B Ramngaihawma ◽  
◽  
Shiva Kumar ◽  
V.K Bharti ◽  
Malsawm tluanga ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Water Samples ◽  
Potable Water ◽  
Rainwater Harvesting ◽  
Microwave Plasma ◽  
Total Alkalinity ◽  
World Health ◽  
Total Hardness ◽  
Chemical Characteristics ◽  
Physico Chemical

In the present study, physico-chemical characteristics of potable water from the selected area in the central part of Mamit district, Mizoram were analysed to obtain the quality level for domestic uses. During the non-monsoon period, the residents in the selected area mainly depend on perennial spring (Tuikhur), hand pump, and rainwater harvesting without any treatment for drinking and other domestic purposes. A total of 17 potable water samples were collected from 6 different stations in the study area. The water samples were analysed for their physico-chemical characteristics, viz. pH, Turbidity, EC, Total Dissolve Solids, Total Hardness, Total Alkalinity, chloride, fluoride, nitrate, and sulphate. On comparing the results against water quality standards and standard values recommended by the World Health Organization (WHO) and Bureau of Indian Standard (BIS), it is found that most of the water samples are well within the permissible limit and suitable for drinking and domestic purposes. Analysis of heavy metals such as Iron, Zinc, Cadmium, Magnesium, Copper, Lead, Potassium, Chromium, Manganese, Calcium, Arsenic, and Sodium was also carried out by using Microwave Plasma Atomic Emission Spectroscopy (MPAES). The concentrations of heavy metals were also found within the acceptable limits as per WHO and BIS guidelines.

scholarly journals ASSESSMENT OF PHYSICO-CHEMICAL CHARACTERISTICS AND HEAVY METAL CONCENTRATIONS OF STUBBS CREEK, IBENO, AKWA IBOM, NIGERIA

2021 ◽  
pp. 15-26
Author(s):  
Henry Robert Anwan ◽  
Martins Agenuma Anetekhai ◽  
Gabriel Olarinde Mekuleyi
Keyword(s):  
Heavy Metals ◽  
Seasonal Variation ◽  
Water Samples ◽  
Oxygen Demand ◽  
Total Hardness ◽  
Chemical Characteristics ◽  
Mean Values ◽  
Spatial And Seasonal Variation ◽  
Physico Chemical ◽  
Total Dissolved Solid

The present study examined some physico-chemical characteristics (temperature, pH, total hardness, dissolved oxygen (DO), total dissolved solid(TDS), conductivity, transparency, biochemical oxygen demand (BOD), acidity and alkalinity) and some heavy metals (Fe, Zn, Cu, Cd, Cr and Ni) concentration of Stubbs Creek, Ibeno, Akwa Ibom, Nigeria between August 2014 and July, 2015. Six sampling stations (Mkpanak, Okpot Ikot, Ebana Mbri, Esit Eket, Okpuk and Ikot Ebia Anam) in Stubbs Creek were selected. Water samples were analyzed using APHA-AWWA-WPCF methods while heavy metals in the water samples were digested and determined using UNICAM 939 Atomic Absorption Spectrophotometer (AAS). The mean values of water parameters of Stubbs Creek are: temperature (27.22 ± 0.230C); pH (6.83 ± 0.13), DO (3.86 ± 0.20 mg/L), BOD (2.84 ± 0.11 mg/L), conductivity (522.23 ±69.12 µScm-1), TDS (288.83 ± 39.50 mg/L), transparency (0.86 ± 0.05m), alkalinity (95.51± 6.44mg/L), acidity (97.03±7.45) and total hardness(12.11±1.55).Only TDS, conductivity, alkalinity and total hardness showed significant (p<0.05) spatial variation across the sampling stations. However, the values of temperature, TDS, conductivity, alkalinity and total hardness indicated significant seasonal variation. Similarly, there were no significant (p<0.05) spatial and seasonal variation in the values of heavy metals recorded across the sampling stations. All the physico-chemical parameters and heavy metals in this study are below the maximum permissible limit recommended by WHO. The result showed that Stubbs Creek is less polluted at present and safe for the biota. However, responsible use of the water bodies by all and sundry should be maintained in order to preclude problems common with effluents discharge.

Chemosensory Bioassay of Toxicity of Lake Waters Contaminated with Heavy Metals from Mining Effluents

1977 ◽  
Vol 12 (1) ◽  
pp. 179-190 ◽  
Author(s):  
B.E. Thompson ◽  
T.J. Hara
Keyword(s):  
Heavy Metals ◽  
Complex Formation ◽  
Lake Water ◽  
Salvelinus Alpinus ◽  
Depressing Effect ◽  
Artificial Lake ◽  
Depressive Effect ◽  
Natural Lake ◽  
Olfactory Organs ◽  
Lake Waters

Abstract The toxicity of natural lake waters contaminated with heavy metals from mining effluents was studied by perfusing water samples through the olfactory organs of Arctic char (Salvelinus alpinus) while recording the olfactory bulbar electrical responses to the standard stimulant, L-serine. Of the five lake waters tested, only Ross Lake, the closest to the mining-smelting site, showed significant depressing effect on the olfactory response at levels as high as 100 times dilution. Chemical analysis of lake waters revealed that Ross Lake had the highest concentrations of heavy metals; 43 μg/1 Cd, 98 μg/1 Cu, &lt;15 μg/1 Ni and 7720 μg/1 Zn. Single component experiments showed that Cu and Cd are probably responsible for most of the depressive effect. The depressive effect of natural lake water was less than that of an artificial lake water composed of heavy metals based on the natural lake concentrations. Possible involvement of complex formation of heavy metals in the reduction of their toxicity is discussed.

Sign in / Sign up

Export Citation Format

Share Document