Urban impacts analysis on hydrochemical and hydrogeological evolution of groundwater in shallow aquifer Linares, Mexico

Occurrence of pharmaceuticals and personal care products in the urban aquifer of Zaragoza (Spain) and its relationship with intensive shallow geothermal energy exploitation

“…For example, variations in pH control the protonation/deprotonation reactions (Tolls, 2001), temperature affects the degradation of antibiotics (Doi and Stoskopf, 2000), dissolved oxygen in groundwater can change aerobic biodegradation rates of EOCs (Al-Rajab et al, 2010;Barbieri et al, 2011), and thickness of the unsaturated zone is related to the potential degradation of EOCs (Sopilniak et al, 2018). On the other hand, major and trace elements such as NO3 and Se have been related to incidental or induced infiltration of sewage water (Dávila Pórcel et al, 2012), therefore qualifying as suitable markers of anthropogenic influence in the aquifer environment. Moreover, antibiotics may affect the natural microbial denitrification process (Ahmad et al, 2014;García-Galán et al, 2010).…”

Investigation of the geochemical evolution of groundwater under agricultural land: A case study in northeastern Mexico

“…Dávila-Porcél et al (2012) estimated that the potential sources of contamination are the infiltration of sewage water, wastewater treatment effluents, leachates from cattle farm wastes and municipal landfills, leakage from sanitary sewers, septic deposits, surface contamination due to agricultural practices, and concentrations of calcium and bicarbonate from natural mineralization processes. Using stable isotopes and halides, Pastén-Zapata et al (2014) indicated that the main nitrate sources were animals (manure application, cattle ranches) and human sewage (leakage from urban sewers, septic tanks).…”