The effect of sulfuric acid neutralization on carbonate and stable carbon isotope evolution of shallow groundwater

Ali, Hendratta; Atekwana, Estella A.

doi:10.1016/j.chemgeo.2011.02.023

Cited by 35 publications

(11 citation statements)

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“…The hydrothermal system at Jinding during Stage 3 of the mineralization is characterized by relatively low temperatures of 80–100 °C, salinities of 2–6 wt% NaCl equivalent, and a neutral pH (Wang, Xu et al, ; Zeng, ). The sphalerite–galena–pyrite–sulfate–carbonate in the brecciated limestone‐hosted ore provides evidence for near‐neutral pH conditions (Alhamed, ; Ali & Atekwana, ). Pyrite has the highest contents of most trace elements (Figure ) with the wide enrichment of many trace elements (Cu, Zn, Ag, Sb, Pb, Bi, and Se).…”

Section: Discussionmentioning

confidence: 99%

Mineralization processes at the giant Jinding Zn–Pb deposit, Lanping Basin, Sanjiang Tethys Orogen: Evidence from in situ trace element analysis of pyrite and marcasite

et al. 2017

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The giant Jinding Zn–Pb deposit is in the Mesozoic–Cenozoic Lanping Basin of southern China and hosted by sandstone in the Early Cretaceous Jingxing Formation and limestone breccia and sandstone and gypsum in the Palaeocene Yunlong Formation. Mineral associations at the deposit are early (Stage 1) marcasite–sphalerite(–pyrite) and galena–quartz; through (Stage 2) pyrite–sphalerite–galena(–arsenopyrite) and marcasite–celestite–carbonate–gypsum; and the late (Stage 3) galena–sphalerite–pyrite–sulfate–carbonate(–celestite), gypsum, and barite. Pyrite and marcasite have higher Pb, Zn, Ag, Bi, As, Se, and Tl and lower V, Cr, Co, Ni, Cu, and Sn assays in orebodies hosted by sandstone and brecciated limestone. The concentration of these elements progresses from the early to late stages with increasing Cu, Zn, Ag, Bi, V, Cr, Co, Ni, and Se; decreasing Tl and As; and constant Pb, Sn, and Sb. This chemical characteristic of the pyrite and marcasite indicates that their source is basinal brine with minor contribution from the host rocks. During the early and middle stages, pyrite and marcasite contain higher concentration of Pb, Tl, and As, which is related to mineralized basinal brine and H2S‐rich fluids at a low pH during relatively higher temperature conditions. During the late stage mineralization, pyrite and marcasite contain the highest concentrations of Cu, Zn, Ag, Sb, Pb, Bi, and Se, which is associated with metal‐rich basinal brine and meteoric water at a near‐neutral pH and lower temperature conditions.

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Section: Discussionmentioning

confidence: 99%

Mineralization processes at the giant Jinding Zn–Pb deposit, Lanping Basin, Sanjiang Tethys Orogen: Evidence from in situ trace element analysis of pyrite and marcasite

et al. 2017

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“…Atekwana and Fonyuy [71] and Ali and Atekwana [72] measured the δ 13 C DIC values to assess the extent of H + production from acid mine drainage (AMD) pollution of stream waters on inorganic carbon processing and δ 13 C DIC over spatial and temporal scales. Ali and Atekwana [72] investigated at the Federal Tailings Pile in the St. Joe State Park in southeastern Missouri (USA) the acidification and neutralization effects on the carbonate evolution in a shallow aquifer affected by a metal sulfide-rich and carbonate-rich tailing pile. Their isotopic modeling suggested that in the vadose zone, HCO 3 À dehydration produced degassing of CO 2(g) from pore water and groundwater with δ 13 C DIC of À3.1 to À6.8‰.…”

Section: Applications To Environmental Geochemistry Studiesmentioning

confidence: 99%

Groundwater Contamination Studies by Environmental Isotopes: A review

Nisi

Raco

Ḏotsika

2014

The Handbook of Environmental Chemistry

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Water demand for urban, industrial, and agricultural purposes is a major concern in developed and third world countries. A careful evaluation for an appropriate and sustainable use of water resources is a priority. Geochemical processes can lead to measurable variations of the aquatic environment, which can be studied through the analysis of the dissolved solutes. Even if this review is not meant to be exhaustive, it is intended to give a view on the importance of environmental isotopes in the context of groundwater quality assessments. This is done by briefly recalling some basic notions for each described system, followed by relevant applications and reports about some significant case studies. This review includes well-established isotopic systematics, such as those of O and H in water, C in dissolved inorganic carbon (DIC), S and O in sulfates, and N and O in nitrates and those of boron and Sr, which in the last lustrums have found large application in the field of water geochemistry. This chapter ends with some examples related to nontraditional isotopes, i.e., Fe, Cr, and Cu, in order to highlight the potential of the environmental isotopes to trace sources, fate, and behavior of different solutes and metals in surface water and groundwater.

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“…have gradually become an important factor influencing the chemical composition of river water. More and more studies have paid attention to the CCW influenced by nitric acid or sulfuric acid, which is derived from industrial and agricultural activities [11][12][13][14][15][16][17][18]. Strong acid, such as sulfuric acid or nitric acid derived from anthropogenic sources, replaces carbonic acid agent and dissolves rocks in the process of rock chemical weathering.…”

Section: Introductionmentioning

confidence: 99%

“…This is of great significance for the accurate identification of the role of exogenous acids during the chemical weathering process in drainage basins in evaluating the interference of human activities with CCW and gaining an insight into the current global climate change and carbon cycle. However, the CCW processes involving strong anthropogenic acids have not yet received sufficient attention in the current global carbon cycle model [15].…”

Section: Introductionmentioning

confidence: 99%

Chemical Weathering and Riverine Carbonate System Driven by Human Activities in a Subtropical Karst Basin, South China

Lyu

Zuyi

Gao

et al. 2018

Water

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In the context of climate change, the input of acid substances into rivers, caused by human activities in the process of industrial and agricultural development, has significantly disrupted river systems and has had a profound impact on the carbon cycle. The hydrochemical composition and which main sources of the Lianjiang River (LR), a subtropical karst river in northern Guangdong Province, South China, were analyzed in January 2018. The objective was to explicate the influence on the deficit proportion of CO2 consumption, resulting from carbonate chemical weathering (CCW), driven by nitric acid (HNO3) and sulfuric acid (H2SO4), which is affected by exogenous acids from the industrial regions in north of the Nanling Mountains and the Pearl River Delta. The response of the riverine carbonate system to exogenous acid-related weathering was also discussed. HCO3− and Ca2+, respectively, accounted for 84.97% of the total anions and 78.71% of the total cations in the surface runoff of the LR, which was characterized as typical karst water. CCW was the most important material source of river dissolved loads in the LR, followed by human activities and silicate chemical weathering (SCW). Dissolved inorganic carbon (DIC), derived from CCW induced by carbonic acid (H2CO3), had the largest contribution to the total amount of DIC in the LR (76.79%), and those from CCW induced by anthropogenic acids (HNO3 and H2SO4) and SCW contributed 13.56% and 9.64% to the total DIC, respectively. The deficit proportion of CO2 consumption associated with CCW resulting from sulfuric acid and nitric acid (13.56%), was slightly lower than that of the Guizhou Plateau in rainy and pre-rainy seasons (15.67% and 14.17%, respectively). The deficit percentage of CO2 uptake associated with CCW induced by sulfuric acid and nitric acid, accounted for 38.44% of the total CO2 consumption related to natural CCW and 18.84% of the anthropogenic acids from external areas. DIC derived from CCW induced by human activities, had a significant positive correlation with the total alkalinity, SIc and pCO2 in river water, indicating that the carbonate system of the LR was also driven by exogenous acids, with the exception of carbonic acid. More attention should be paid to the effects of human activities on the chemical weathering and riverine carbonate system in the karst drainage basin.

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The effect of sulfuric acid neutralization on carbonate and stable carbon isotope evolution of shallow groundwater

Cited by 35 publications

References 35 publications

Mineralization processes at the giant Jinding Zn–Pb deposit, Lanping Basin, Sanjiang Tethys Orogen: Evidence from in situ trace element analysis of pyrite and marcasite

Mineralization processes at the giant Jinding Zn–Pb deposit, Lanping Basin, Sanjiang Tethys Orogen: Evidence from in situ trace element analysis of pyrite and marcasite

Groundwater Contamination Studies by Environmental Isotopes: A review

Chemical Weathering and Riverine Carbonate System Driven by Human Activities in a Subtropical Karst Basin, South China

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