I am interested to know whether the TDS of groundwater is controlled by the temperature of groundwater or not.
Yes,..increasing of temperature increasing the suitability of ions in the water it indicator to increase the salinity of water. TDS of groundwater is controlled by the temperature .
Well,
TDS increased with the minerals solubility, which depend on temperature till reach oversaturated condition, then the minerals precipitated, Causing a decrease in the salinity of groundwater.
Sincerely
Yes, increase in temperature will result in increase in TDS. To add to the contributions of Al-Khashman and Hussien, increase in temperature will result in increase in the electrical conductivity of water which has a direct relationship with TDS.
Sudip Saha yes, temperature controls the solubility of minerals which in turn regulates the TDS of water. Increase in temperature enhances the ability of water to dissolve minerals quickly but to a limit (over saturation), beyond that point no mineral will be dissolved in water any further.
The temperature CAN increase the TDS of water but whether there is an increase and the composition of the TDS depends...
1. High sodium containing formations - yes sodium and chloride are more soluble at higher temperature
2. Silica - yes, silica also exhibits a "normal" solubility relationship with temperature
3. High calcium containing formations - Not the calcium. Ca has a retrograde solubility with temperature (more soluble at lower T than higher)
Other factors are, of course, mechanical energy (movement of water through the formation), time...how long is the water in that rock and how deep in the earth.
I totally agree with Shannon. Sodium and chlorine exhibit high mobility of ions with increased temperature and that will affect TDS values.
I agree with Shannon answer above,,,. The sodium and chlorine exhibit high mobility of ions with increased temperature and that will affect TDS values.
TDS of groundwater is not controlled by groundwater temperature. However gw temperature increases with deep groundwater circulation/perculation ( temprature gradient concept ).
@Salimi, TDS values are influenced by temperature. Increase in temperature increases electrical conductivity of water, and electrical conductivity has a linear relationship with TDS which imply that TDS will also increase with increase in temperature. You can check this this article and others..."Effects of Seasonal Variations in Physical Parameters on Quality of Gravity Flow Water in Kyanamira Sub-County, Kabale District, Uganda"
Ebong, appreciated your interest and remark. TDS and Electrical conductivity are directly related. It is better to take some observations and communicate findings.
The conductivity of a solution increases with increasing temperature. The TDS is also directly proportional to the conductivity. It can be concluded that TDS will increase with an increment of the temperature.
In general solubility of salts is proportional to temperature except for exothermic processes, hence TDS mostly increases with increase in temperature. Electrical conductivity and their computed TDS are therefore always reported at 25 C.
In ground water the surrounding environment (soil, sludge etc) contains a number of minerals which dissolve with increasing temperature and result in high TDS in high temperature zone environment.
In this subject, Good on line / published literature available
Yes, to some extent. Temperature could be a governing factor as increase in temperature results in increase of solubility of rock storing the water but it is not solely a temperature driven process.
Yes, temperature could be a governing factor that influence on the solubility of aquifers that storage groundwater, when the solubility of ions increase the total dissolved solids in water increase.
The solubility of solutions increase with increasing temperature, so the TDS of groundwater increases with temperature.
The increase of temperature due to increase of the solubility of ions it increase the salinity in groundwater.
Dissolved ions increases the salinity as well as conductivity of water. Hence TDS of water will also increase. TDS of water directly proportional to the conductivity.
The chemical state of groundwater is generally defined in terms of three parameters: the temperature, pH, and oxidation-reduction potential (redox potential). These factors are often influenced by chemical reactions between the groundwater and aquifer materials or mixing with different waters and these factors in turn control the chemical composition of groundwater. For example, the total dissolved solids (TDS) in groundwater, largely derived from aquifer minerals that dissolve in groundwater, will change significantly as a function of temperature and pH.
At any given temperature, there is a specific concentration of a dissolved mineral’s constituents in the groundwater that is in contact with that mineral. The actual concentration is temperature dependent, e.g., at higher temperatures, groundwater can dissolve more of the mineral. Even changes in groundwater temperature of only 5 to 10 C can cause o detectable changes in TDS. To some individuals, an increase in the temperature of their drinking water alone can be perceived as a different, and generally less palatable, taste
Regards
Krishna
The major chemical parameters should be taken to study the water quality and determined the salinity....Temperature, pH, EC, DO, oxidation-reduction potential (redox potential), ions (cations and anions) and metals. For example, the total dissolved solids (TDS) in groundwater, largely derived from aquifer minerals that dissolve in groundwater, will change significantly as a function of temperature and pH.
In general there is no relation between TDS and temperature of ground water. Deep circulated water which is more in temperature but low in TDS for example hot springs. Similarly in many cases same temperature but different TDS.
Temperature does not have any known relation with TDS. However, temperature relates with factors that determine the chemical behaviors of species in groundwater. Since solubility is temperature dependent, increase in temperature, which increases solubility controls groundwater physically and chemically.
The increase of temperature of the deep groundwater is due to increase of the solubility of ions that is due to increase in the salinity of groundwater.
Dear Sudip
Ground water pollution is affected by temperature but with acceptable limits and this may change according to density of that water
TDS of ground water normally depends on the composition of rock minerals above it and the solubility of these minerals may increase or decrease on increase in temperature. Hence, it is not wise to highlight any concrete inferences.
No relation between TDS and ground water temperature. Both have different concept.
TDS & Conductivity in ground water is inter related (0.55 to 0.70) & EC is generally reported at 25 degree C because conductivity increases with temperature due to increase in solubility of minerals present in ground water environment as undissolved form. Hence when conductivity increases, the TDS of the surrounding ground water will also increase i.e. it is temperature dependent. It is the reason that in periodical measurement of these parameters (TDS & EC with temp) of a ground water well at a same station give a periodical changing value repeating annually.
Well,
Most hydrogeochemical reactions, such as oxidation, reduction, ion exchange, dissolution, and precipitation, which take place between groundwater and sediment (control TDS concentration), are either endothermic or exothermic reactions.
Regards
I COMPLETELY AGREE WITH PROFESSOR BAYAN HUSSIEN SIR. WITH BEST REGARDS
SUDIP SAHA
If we take example of sea water intrusion in ground water (in costal region), in the study of sea water intrusion, Electrical Conductivity (EC) and TDS are the indicators of salinity in ground water. These two parameters are correlated and usually expressed by a simple equation: TDS = k EC (in 250 C) . EC is the measures of liquid capacity to conduct an electric charge. We can say that calculation of TDS is derivative of EC and EC is directly depends on temprature.
Hi,
I dont think that, sometimes we find a cold water have a TDS hight then the thermal water, and in my own data of thermal water the temperature its not correlated with the Temperature , so i think the TDS not controlled by temperature of water .
Best regards
Youcef
As EC depends directly with temperature of groundwater, we can conclude that the TDS also controlled by temperature.
TDS and ground water temperature do not have relation. Many hot spring have low TDS.
Temperature of ground water varies with depth
Well,
In general, TDS is a result of minerals solubility, and the solubility depends on the temperature, especially in the sedimentary aquifer media except for clean sandglass( Sedimentary Quartzite 100% SiO2). Less solubility occurred in the igneous and metamorphic aquifers due to its origin (resistant to heating), in this case, we found some hot springs have low TDS.
Regards
Yes, Greater the temperature of ground water more will be the solubility of metal salts from the surrounding environment, hence more will be TDS. That is why Electrical conductivity is always reported at 25 degree Celsius and TDS values computed from it are at the same temperature i.e. 25 dC. More over the conversion factor is there to report the values at universal 25 degree Celsius if you read the value at any other temp.
Good and useful information in these articles
http://www.ijbts-journal.com/images/main_1366796758/AM%2019-3_%20Sivapan%20Choo%20%E2%80%93in_ICBTS_Amsterdam_2019.pdf
Article Evaluating Relationships Between Total Dissolved Solids (TDS...
Article Effects of Temperature, Total Dissolved Solids, and Total Su...
Not quite sure but a noticeable change in temperature may affect saturation state and so solubility of dissolved gases and host minerals, depends on fluid and rock chemistry (e.g. carbonates) within the reservoir. If dissolution exceeds precipitation, TDS should rise! [dissolved CO2 might leave when T rise -> As CO2 leaves, water becomes more acidic -> Formation water may become undersaturated with respect to carbonate host rocks -> More carbonates dissolves -> TDS goes up]
Technically TDS is weight based ( mg/lit) so temperature does not have any effect on it. We use conductivity as an analog for TDS . It works pretty well but conductivity is temperature dependent. Most decent conductivity probes will have temperature compensation through so unaffected by the temperature change.
Micro probes loggers are very common which measure TDS, pH , conductivity and temperature in a bore well. It is very simple to get the result , temperature and TDS are not related.
Sir, thank you very much for the clarification.
I was thinking in a different way (subsurface condition). Please pardon me if I am wrong. If the reservoir is mainly comprised of inorganic salts which results in high TDS, we generally prefer gravimetric methods (masses left after evaporation) for measurements.
Now if we consider the concentration in groundwater within the aquifer, solubility of host rocks (minerals) and formation water chemistry (ions and aqueous complexes) might play key roles [note: we are not considering microbial effects here]. For different minerals present in the reservoir, solubility (dissolution and secondary precipitation) of minerals may be controlled by thermodynamics (direction of rxn) and kinetics (rate of rxn). There are some established empirical data (co-efficients) to calculate the solubility of different minerals at varying temperature ranges. Furthermore, we need to consider the volume fraction of minerals as the concentrations may be affected by the volume of dissolution or precipitation. There is neither identical nor linear relationship betn TDS and T because the solubility (and consequently the changes of concentration of major ions in groundwater) will differ (even shows opposite relations) depending on which minerals (including volume% and concentration of dissolved species (liquid and gas)) are present within the aquifer. As a result, an increase or decrease of concentration may affect the TDS depends on the maximum range of temperature variations we are considering.
In laboratory it can perform easily , TDS ( by EC ) and temperature.on line publications already available.
https://scialert.net/fulltextmobile/?doi=rjes.2014.444.450
https://www.diva-portal.org/smash/get/diva2:1050401/FULLTEXT01.pdf
Article Temperature-Electrical Conductivity Relation of Water for En...
The estimations of total dissolved solids (TDS) content are based on electrical conductivity (EC) measurements. The measured EC values at various temperatures need to be reported as corresponding to a standard temperature because EC is dependent on temperature.
- Badges
- Science topic
- Similar topics
- Agricultural Science
- Agronomy