The geochemical analysis was carried out in the center-south portion of state Bahia, semi-arid region where outcrop Paramirim Complex, Boquira Unit, Granite, Veredinha Serra do Espinhaço, detritus coverings and alluvial deposits. Unit is known for lead-zinc mineralization. In this unit operated mine, considered largest lead zinc mine Brazil, until it suddenly abandoned, leaving significant envi...

Abstract Gypsum crystals are found at the well perforation of observation Ktzi 202 test site for CO 2 storage Ketzin, Germany. XRD analysis confirms pure gypsum. Fluid samples before and after injection analyzed. Geochemical modeling is conducted to identify mechanisms that lead gypsum formation. The carried out with PHREEQC Pitzer database due high salinity up 5 mol per kg water. Due their sig...

The adsorption of polar organic molecules on the surface brine-saturated carbonate rocks alters relative mobility oil and water with important implications for production groundwater remediation. We propose a mathematical model acid groups (initially contained in an phase) calcite presence brine. reduce problem into smaller subsystems characterize them by identifying key interactions. Oil–brine...

In this study, the treatment of acid mine drainage (AMD) using vertically flowing wetland was explored. The enriched with Vetiveria zizanioides as a decontaminating media and soil substrate. Water percolated through substrate throughput samples were collected characterized every five days for period 30 days. obtained results revealed tolerant index 1.03 zizanioides, net reduction metals sulfate...

Abstract Uranium (U) is formed by the interaction of groundwater in aquifer and surrounding rocks. The area chosen for this study a hard rock terrain various lithology South India, which releases U affect quality. Hence, was conducted to understand geochemistry temporal variations with respect saturation state minerals different seasons namely Pre-monsoon (PRM), Northeast monsoon (NEM), Southwe...

The natural discharge of geothermal water containing harmful components affects the quality surrounding environment and brings security risks to drinking safety. in Tibet is characterized by high boron content, but pollution caused this not clear. In study, we collected surface from Zhaxikang system southern investigate causes its discharge. results indicate that hydrochemical type was HCO3-Cl-...

Abstract Acid mine drainage (AMD) is one of the most important global causes for polluted water. It occurs in mining areas due to oxidation sulfide minerals. Depending on hydrological conditions, wetlands are considered suitable passive treatment AMD. The aim study was characterize long-term retention performance a drained wetland, Briesener Niedermoor, an iron and sulfate contaminated catchmen...

The purpose of this study was to determine the fluoride levels in water, soil and tea, and to identify the major fluoride minerals in soil that supply water with fluoride ions. Another aim was to study the prevalence of dental fluorosis in permanent dentition of the school children of the Gaza Strip. Monitoring of fluoride levels in 73 groundwater wells and 20 topsoil samples for the last three...

Geochemical post-pyrogenic soil changes are one of the most important factors in determining state forest ecosystem. For first time content microelements (Hg, As, Ba, Mg, Mn, Mo, Cd, Co, Cr, Cu, Pb, Zn, V, Ni) sod-podzolic soils under pine Zhytomyr Polissya (Ukraine) was determined by ICP-MS method. The study is based on a comparison trace elements background area and burnt areas (grassland fir...