Publications by authors named "E M Kleĭner"
Objectives: To compare the plaque reducing efficacy of oil pulling with sesame oil compared to distilled water in a randomized, controlled, examiner-blinded parallel group study.
Materials And Methods: Forty probands without advanced periodontal disease of the University Hospital for Restorative Dentistry and Periodontology, Medical University of Innsbruck (Austria) were randomized allocated to test- (sesame oil) or control group (distilled water) and asked to pull daily in the morning for eight weeks with their allotted fluid for 15 min. Rustogi Modified Navy Plaque Index (RMNPI) and gingival bleeding index were assessed at baseline and after four and eight weeks.
Single-solute batch kinetic and isotherm experiments were conducted in Type 1 (18.2 MΩ·cm resistivity) water supplemented with 10 mM carbonate buffer (pH 7.75, 25 °C) for nine drinking water relevant perfluoroalkyl chemicals and three bituminous-coal based granular activated carbons (GACs).
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- - The study assessed how selective certain drinking water-related PFAS compounds are for chloride ions using three types of anion exchange resins, focusing on low concentrations relevant to drinking water (≤500 ng/L).
- - Results showed that most PFAS behaved according to traditional ion exchange principles, with selectivity increasing with both PFAS carbon chain length and chloride concentrations, while maintaining a much higher selectivity than inorganic anions like nitrate.
- - A competition experiment confirmed that selectivity values for individual PFAS could be used in a multisolute context, paving the way for improved models in water treatment processes involving PFAS.
A coconut shell (AC1230CX) and a bituminous coal based (F400) granular activated carbon (GAC) were ground with mortar and pestle (MP), a blender, and a bench-scale ball milling unit (BMU). Blender was the most time-efficient for particle size reduction. Four size fractions ranging from 20 × 40 to 200 × 325 were characterized along with the bulk GACs.
View Article and Find Full Text PDFWhen implementing anion exchange (AEX) for per- and polyfluoroalkyl substances treatment, temporal drinking water quality changes from concurrent inorganic anion (IA) removal can create unintended consequences (e.g., corrosion control impacts).
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