Appraisal of subsurface hydrogeochemical processes in a geologically heterogeneous semi-arid region of south India based on mass transfer and fuzzy comprehensive modeling

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dc.authoridD, Dr. Karunanidhi/0000-0002-4722-9043
dc.authoridSunkari, Emmanuel Daanoba/0000-0002-0898-2286
dc.authorid, Prof. T. SUBRAMANI/0000-0002-8273-765X
dc.contributor.authorKarunanidhi, D.
dc.contributor.authorAravinthasamy, P.
dc.contributor.authorDeepali, M.
dc.contributor.authorSubramani, T.
dc.contributor.authorSunkari, Emmanuel Daanoba
dc.date.accessioned2024-11-07T13:34:17Z
dc.date.available2024-11-07T13:34:17Z
dc.date.issued2021
dc.departmentNiğde Ömer Halisdemir Üniversitesi
dc.description.abstractThe main aim of the present study was to examine the quality of the groundwater and decipher the sources of groundwater fluoride through mass balance modeling based on fluoride exposure in a geologically heterogeneous semi-arid region of southern India. This was achieved by hydrogeochemical analysis, graphical methods, and mass transfer modeling approaches. Fuzzy comprehensive technique was applied to evaluate the quality of groundwater for groundwater management. In this regard, 61 groundwater samples were obtained from open wells and bore wells and analyzed for different physicochemical parameters. The major cation and anion abundances follow the order Na+ > Ca2+ > Mg2+ > K(+)and Cl- > HCO3- > SO42- > NO3- > PO43-. About 88.4% and 34.4% of the total water samples were dominated with Na(+)and Cl(-)ions in this region, respectively. The fluoride level in groundwater ranged from 0.10 to 3.30 mg/l with a mean value of 1.04 mg/l. Nearly 25% of the groundwater samples collected from 15 villages showed fluoride concentrations exceeding the maximum permissible limit of 1.5 mg/l as per the World Health Organization recommendations for human intake. More than 85% of the samples fell under strong acid (Cl(-)and SO42-) type. The amount of groundwater salinization in this region was 70.5% since the Revelle index (RI) was excess in the groundwater samples (RI > 0.5 meq/l). Silicate weathering, cation exchange, and gypsum dissolution were the dominant geogenic processes in the aquifer system influencing groundwater chemistry and nullified the possibility of carbonate dissolution. Saturation indices revealed the contribution of sequestration of CaCO(3)in F(-)enrichment. Total dissolved solids showed strong positive correlations with Na+, Ca2+, Mg2+, Cl-, SO(4)(2-)and NO(3-)indicating the contribution of anthropogenic inputs to groundwater chemistry in addition to geogenic sources. The results of the fuzzy comprehensive method indicated that 33% of the groundwater samples fell under fair water type, 2% and 11% of the samples fell under poor and very poor quality water types, respectively. Therefore, this work will be helpful for the decision-makers to plan for the sustainable management of groundwater resources.
dc.description.sponsorshipScience and Engineering Research Board (SERB), Department of Science and Technology (DST), Government of India [ECR/2017/000132]
dc.description.sponsorshipThe authors are grateful to the Science and Engineering Research Board (SERB), Department of Science and Technology (DST), Government of India (File. No: ECR/2017/000132 dated. 18.07.2017), for releasing required funds to execute this research.
dc.identifier.doi10.1007/s10653-020-00676-2
dc.identifier.endpage1028
dc.identifier.issn0269-4042
dc.identifier.issn1573-2983
dc.identifier.issue2
dc.identifier.pmid32719980
dc.identifier.scopus2-s2.0-85088644523
dc.identifier.scopusqualityQ1
dc.identifier.startpage1009
dc.identifier.urihttps://doi.org/10.1007/s10653-020-00676-2
dc.identifier.urihttps://hdl.handle.net/11480/15903
dc.identifier.volume43
dc.identifier.wosWOS:000552923100001
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.language.isoen
dc.publisherSpringer
dc.relation.ispartofEnvironmental Geochemistry and Health
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_20241106
dc.subjectGeochemistry
dc.subjectFluoride
dc.subjectMass balance modeling
dc.subjectFuzzy comprehensive method
dc.subjectSouth India
dc.titleAppraisal of subsurface hydrogeochemical processes in a geologically heterogeneous semi-arid region of south India based on mass transfer and fuzzy comprehensive modeling
dc.typeArticle

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