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This book collects the peer-reviewed contributions accepted for the publication in the Special Issue “Advances in In Situ Biological and Chemical Groundwater Treatment” of the MDPI journal Water. As such, the contributions refer to a variety of widespread pollutants (chlorinated ethenes, chlorinated phenols, chromium, copper, nickel, and arsenic phenols) and new remediation approaches (bioremediation, bioelectrochemical systems, and sorption), covering lab and field studies.
microplastic --- bioplastic --- chlorinated phenols --- sorption --- kinetics --- matrix effect --- arsenic --- phosphate --- competitive surface complexes --- release --- mobility --- remediation --- magnetite nanoparticles --- onion peel --- corn silk --- adsorption --- groundwater --- chlorinated solvents --- biological reductive dechlorination --- aerobic oxidation --- qPCR --- ethenotrophs --- methanotrophs --- bioelectrochemical systems (BESs) --- hexavalent chromium --- electrobioremediation --- groundwater treatment --- heavy metals --- carbon nanotubes --- adsorption mechanism
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The need for establishing a formal limit between the concentration of potentially toxic inorganic compounds in groundwater due to natural processes or to anthropogenic pollution has prompted researchers to develop methods to derive this boundary and define the "Natural Background Level" (NBL). NBLs can be used as screening levels to define the good chemical status of groundwater bodies, as well as to fix the remediation target in polluted sites.The book "Natural Background Levels in Groundwater" brings together a set of case studies across Europe and worldwide where the assessments and identification of this boundary are performed with different methodologies. It provides an overview of the approaches and protocols applied and tested in different states for NBL assessment, ranging from well-known methods, such as component separation or cumulative probability plot methods, to new computer-aided protocols. The main objective of this book is to bring together and discuss different methodological approaches and tools to improve the assessment of groundwater NBLs. The overview, discussion and comparison of different approaches and case histories for NBL calculation can be useful for scientists, water managers and practitioners.
ambient background values --- probability plot --- modified Lepeltier method --- pre-selection method --- LOQ --- groundwater body --- Croatia --- natural background levels --- software implementation --- parameters estimation --- statistical methods --- component separation method --- groundwater quality --- groundwater level --- geostatistics --- t-test --- spatial distribution modeling --- natural background --- conceptual model --- preselection --- nitrates --- confidence level --- arsenic --- sites under remediation --- site-specific data --- Ferrara --- trace metals --- Lanzo Massif --- ultramafic rocks --- ophiolites --- chromium --- hexavalent chromium --- nickel --- neutral mine drainage --- groundwater --- Italian guidelines --- cadmium --- copper --- zinc --- Denmark --- natural background level --- water quality --- anthropogenic pressure --- trace element --- groundwater monitoring --- n/a
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This is a reprint of articles from the Special Issue published online in the open access journal Applied Sciences (ISSN 2076-3417). This book addresses the most recent developments in soil pollution and restoration, contaminant hydrology, and ground disturbance to stimulate fruitful technical and scientific interactions between professionals.
Technology: general issues --- History of engineering & technology --- Environmental science, engineering & technology --- groundwater --- hydrochemistry --- hexavalent chromium contamination --- water chemistry simulation --- construction disturbance --- replacement of embankment --- foamed cement banking technology --- post-construction settlement --- method of replacement thickness calculation --- steam injection --- ethanol --- azeotropic temperature --- heterogeneous aquifers --- nitrobenzene --- microbially induced carbonate precipitation (MICP) --- unsaturated soil --- soil-water characteristic curves --- matrix suction --- microstructure --- molecular dynamics --- mechanical properties --- montmorillonite --- basal spacing --- long-term freeze–thaw cycles --- composite heavy metal contamination --- morphological analysis --- solidification/stabilization --- groundwater level fluctuation zone --- nitrogen --- migration and transformation --- HYDRUS-1D model --- kinetic adsorption and desorption --- groundwater table fluctuations --- Pb --- migration --- experimental study --- unsaturated subgrade --- capillary barrier --- distress control of wetting --- xanthan gum --- silt --- water retention capacity --- strength --- wetting process --- microscopic tests --- overconsolidation effect --- thermal pore water pressure --- calculation method --- saturated clay --- additives --- compacted clay cover --- moisture retention --- gas diffusion barrier --- hydraulic conductivity --- tidal action --- silty-clay soil --- riparian hyporheic zone --- inorganic nitrogen --- occurrence characteristics --- influencing factors --- n/a --- long-term freeze-thaw cycles
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The present Special Issue brings together recent research findings from renowned scientists in the field of water treatment and assembled contributions on advanced technologies applied to the treatment of wastewater and drinking water, with emphasis on novel membrane treatment technologies. 12 research contributions have highlighted various processes and technologies, which can achieve effective treatment and purification of wastewater and of drinking water, aiming (occasionally) for water reuse. The main topics which are analyzed are the use of novel type membranes in bioreactors, the use of modified membranes, for example using vacuum membrane distillation, the fouling of membranes, the problem of arsenic, antimony and chromium contamination in groundwaters and its removal and the use of novel technologies for more efficient ozonation.
hollow fiber membranes --- modeling --- small sized powdered ferric hydroxide --- ceramic membranes --- multiphase --- antimony treatment --- winery effluents --- fouling --- municipal wastewater sludge --- particle size distribution --- ultrafiltration --- coagulation --- HA–BSA mixtures --- Sb(III) --- water treatment --- chromate --- separation --- backwash duration --- water crisis --- adsorption --- dewatering --- hexavalent chromium --- arsenic adsorption --- polydimethylsiloxane --- vacuum membrane distillation --- co-treatment --- desalination --- arsenic --- mass transfer --- produced water treatment --- membranes --- process control --- membrane resistance --- granular ferric hydroxide --- ozonation --- Membrane Bioreactor --- hollow fibre --- crossflow membrane filtration --- microfiltration --- membrane filtration --- xDLVO theory --- Fe-based coagulants --- wastewater treatment --- cake resistance --- Sb(V) --- peroxone --- temperature --- drinking water --- trickling biofilter --- natural organic matter (NOM) --- antimony --- second cheese whey --- sodium alginate --- optical sensors --- bioethanol recovery --- membrane fouling --- interaction energy --- TMP --- adsorption kinetics --- water matrix --- multivariate statistics --- polluted waters --- natural organic matter --- operation --- solution conditions --- biofilm membrane bioreactor
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Long-term exposure to environmental toxicants is estimated to account for 70–90% of the risks of acquiring chronic ailments. Presently, chronic kidney disease and infertility affect a significant proportion of the world population, while research data indicate that exposure to toxic metals may contribute to the looming statistics. Alarming evidence suggests that exposure to the heavy metal cadmium may affect every stage of life, and exposure in early life may determine susceptibility to certain diseases in adulthood. Prevention of these outcomes requires avoidance of further environmental contamination, minimization of exposure, and reduction of toxic metals in food crops to the lowest achievable levels.
Trace elements --- hair --- children --- hazardous waste incinerator --- Constantí (Catalonia, Spain) --- blood lead level --- boatyard --- childhood --- lead poisoning --- fishing community --- lead weights --- β2-microglobulin --- cadmium --- creatinine clearance --- glomerular filtration --- N-acetyl-β-d-glucosaminidase --- nephron mass --- nephrotoxicity --- trace elements --- autopsy tissues --- temporal trends --- creatinine excretion --- glomerular filtration rate --- lead --- kidney --- endocytosis --- metallothionein --- flow cytometry --- proximal tubule epithelial cells --- OGTT --- minimal model --- glucose response mechanism --- genotoxicity --- aluminum chloride --- rats --- food --- farmer --- PTWI (provisional tolerable monthly intake) --- TWI (tolerable weekly intake) --- Monte Carlo simulation --- mercury --- obesogen --- lipid profiles --- hyperlipidemia --- elevated liver enzymes --- hexavalent chromium [Cr(VI)] --- mitochondrial fragmentation --- dynamin-related protein 1 (Drp1) --- mitochondrial respiratory chain complex I (MRCC I) --- reactive oxygen species (ROS) --- blood lead --- cellular immunity --- phagocytosis --- humoral munity --- immunosuppression --- insulin --- diabetes --- hyperglycemia --- hyperinsulinemia --- lipogenic --- β-cell toxicity --- stroke --- cerebrovascular accident --- heavy metal --- rare earth element --- case-control study --- mortality --- lifetime cadmium intake --- renal diseases --- urinary cadmium --- a follow-up study --- diet --- kidney function --- chronic kidney disease --- threshold limit --- tolerable intake level --- heavy metals --- birth weight --- preterm birth --- diet pattern --- Mediterranean diet --- pregnancy --- toxic metals --- reproduction --- testicular and ovarian structure --- n/a --- Constantí (Catalonia, Spain)
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