Heavy metals distribution in the sediments of ganges and Brahmaputra rivers

Subramanian, V.; Grieken, R. Van; dack, L. Van 't

doi:10.1007/bf02449940

Cited by 98 publications

(34 citation statements)

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“…Table 3 also shows that the LREEs are enriched by a factor of about 16 to 27 when compared to HREEs in all the rivers of the Himalayan system. Cerium (Ce) Sarin et al, 1989) Subramanian et al (1987a). 2 Martin and Meybeck (1979).…”

Section: Resultsmentioning

confidence: 99%

“…Despite its global significance, the distribution of REE in surficial sediments of these Himalayan rivers is still poorly known (Martin and Meybeck, 1979). However, studies have been carried out by various researchers on the heavy metal distribution and geochemical characteristics of the Himalayan rivers (Galy and France-Lanord, 1999;Subramanian, 1993;Subramanian et al, 1985Subramanian et al, , 1987aSubramanian et al, , 1987bKrishnaswami et al, 1992;Modak et al, 1992;Sarin et al, 1989Sarin et al, , 1990). …”

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confidence: 99%

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Distribution of rare earth elements and heavy metals in the surficial sediments of the Himalayan river system.

et al. 2000

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Rare earth elements (REEs) are considered as useful tracers of various surface geological processes in the river system. REEs and heavy metals (V, Pb, Cr, Co, Ag, Zn, Cd, Ni) were analyzed from the suspended sediments of Ganges and surficial sediments of Yamuna, Brahmaputra, Jamuna, Padma and Meghna, using VG Thermal Ionization Mass Spectrometer. Physical weathering process seems to be a major controlling factor for the distribution of REE and trace metals in the sediments of the Himalayan rivers. Weathering of the surface crustal area in the drainage basin shows significant variations due to changes in lithology and influence of tributaries. The distribution of REE shows an almost uniform pattern due to factors such as river transportation processes and high level of terrigenous mixing in the bed sediments. The results show that finer grain size and high content of clay mineral (illite) in these sediments are possible traps for the accumulation of metals. Anthropogenic activities seem to have very little influence in controlling the elemental distribution in the Himalayan rivers.

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Section: Resultsmentioning

confidence: 99%

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confidence: 99%

Distribution of rare earth elements and heavy metals in the surficial sediments of the Himalayan river system.

et al. 2000

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“…Samples were taken from the upper 5 cm of the sediments at places where flow rates were low and sedimentation was assumed to occur (Sakai et ah, 1986;Subramanian et al, 1987).…”

Section: Experimental Methodologymentioning

confidence: 99%

Adsorption of zinc onto bed sediments of the River Ganga: adsorption models and kinetics

Jain¹

2001

Hydrological Sciences Journal

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A laboratory study was performed to study the effects of various operating factors, viz. initial metal ion concentration, solution pH, amount of sediment, contact time, particle size and temperature on the adsorption of zinc ions onto the bed sediments of the River Ganga (India). The equilibrium time was found to be of the order of 60 min. The adsorption curves are smooth and continuous leading to saturation, suggesting the possible monolayer coverage of zinc ions on the surface of the adsorbent. The extent of adsorption increases with an increase of pH. Furthermore the adsorption of zinc increases with increasing amount of adsorbent and decreases with adsorbent particle size. The important geochemical phases, iron and manganese oxide act as the active support material for the adsorption of zinc ions. The adsorption data have been analysed with the help of Langmuir and Freundlich adsorption models to determine the mechanistic parameters associated with the adsorption process. An attempt has also been made to determine thermodynamic parameters of the process, viz. free energy change, enthalpy change and entropy change. The negative values of free energy change (AG") indicated the spontaneous nature of the adsorption of zinc onto the bed sediments and positive values of enthalpy change (Aff°) suggest the endothermic nature of the adsorption process. The intraparticle diffusion of zinc in the adsorbent was found to be the main rate-limiting step.Key words River Ganga; adsorption; Langmuir model; Freundlich model; kinetics; thermodynamic parameters Adsorption du zinc par les sédiments du lit du Gange: modèles et cinétiques d'adsorptionRésumé Les effets de plusieurs facteurs -la concentration ionique initiale, le pH de la solution, la quantité de sédiments, le temps de contact, la taille des particules et la température-sur l'adsorption des ions zinc par les sédiments du lit du Gange (Inde) ont été étudiés en laboratoire. Le temps d'équilibre identifié est de l'ordre de 60 min Les courbes d'adsorption sont régulières et continues jusqu'à saturation, suggérant une adsorption surfacique mono-couche des ions zinc sur les particules. Le degré d'adsorption augmente avec le pH. Il augmente également avec la quantité de sédiments, mais décroît avec la taille des particules. Les oxydes de fer et de manganèse s'avèrent être les supports actifs de l'adsorption des ions zinc. Les données d'adsorption ont été analysées avec les modèles de Langmuir et Freundlich, pour déterminer les paramètres mécaniques associés au processus d'adsorption. Une tentative a aussi été faite pour déterminer les paramètres thermodynamiques du processus, c'est-à-dire les variations d'énergie libre, d'enthalpie et d'entropie. Les valeurs négatives de la variation de l'énergie libre (AG°) mettent en évidence la spontanéité de l'adsorption du zinc par les sédiments du lit, tandis que les valeurs positives de la variation de l'enthalpie (Aff°) suggèrent un processus de nature endothermique. La diffusion intra-particulaire du zinc dans les sédiment...

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“…It shows that most of the study area falls within the allowable limit. This clearly defined that Na is influenced less by physical weathering 10 . Potassium Potassium values of study area groundwater range from 4.9 to 9.5 mg/l with an average of 7.64 mg/l.…”

Section: Sodiummentioning

confidence: 91%

Groundwater Quality Mapping of Nandiaru Subbasin, Tamilnadu, India by Using Geo Spatial Technology

Prabhu¹,

Sivakumar²

2018

RJC

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The surface and Groundwater are the most important natural resources of human life. Now a day's Groundwater has become an essential resource due to an increase of its need for domestic, agricultural and industrial uses etc., consequently groundwater quality is very important as its quantity. The present study has shown the spatial variability of groundwater quality mapping for NandiAru sub-basin, Tamilnadu, India using geo-spatial technology. The borehole water samples were collected randomly at 50 sampling locations of the entire study area. The most important parameters of water quality such as pH, TDS, EC, Ca, Na, Mg, Cl, K, SO4, PO4, NO3, F and H2SiO4 has been tested for all the water samples in order to understand the hydro geochemistry of the groundwater. Based on the water quality parameter results were compared with standard parameter values suggested by the Bureau of Indian Standards (IS 10500:2012) for drinking water suitability. The spatial contour map of these groundwater quality parameters was derived in GIS software using an interpolation technique. The overlay analysis was carried out for different spatial contour maps to prepare the groundwater quality map of the study area.

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Heavy metals distribution in the sediments of ganges and Brahmaputra rivers

Cited by 98 publications

References 12 publications

Distribution of rare earth elements and heavy metals in the surficial sediments of the Himalayan river system.

Distribution of rare earth elements and heavy metals in the surficial sediments of the Himalayan river system.

Adsorption of zinc onto bed sediments of the River Ganga: adsorption models and kinetics

Groundwater Quality Mapping of Nandiaru Subbasin, Tamilnadu, India by Using Geo Spatial Technology

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