Effect of Ni (II) and Cr (VI) on activated sludge kinetics

Yetiş, Ülkü


Effect of extracellular polymer composition of activated sludge on the removal of heavy metals by biosorption
Yüncü, Bilgen; Yetiş, Ülkü; Sanin, F. Dilek; Department of Environmental Engineering (2003)
Activated sludge microorganisms can remove many hazardous substances from wastewater by adsorbing and concentrating them on their surfaces. Biosorption of these substances onto activated sludge surfaces are influenced by the chemical properties of the substance in question as well as the surface properties of the microorganisms. The purpose of this study is to identify the biosorption mechanisms of heavy metals and the effect of extracellular polymer (ECP) composition of activated sludge on the biosorption ...
Effects of ultrasound pretreatment and anaerobic digestion on the energy potential of sludge
Çelebi, Emrehan Berkay; Sanin, Faika Dilek; Aksoy, Ayşegül; Department of Environmental Engineering (2015)
The by-product of wastewater treatment, sludge, is generated in tons everyday all around the world. As environmental regulations in Turkey are becoming stricter during the European Union adaptation period, the previously wide-spread disposal method of landfilling the sludge will not be applicable. Instead, dried sludge is expected to be used in revenue generating methods like land application or combustion. Combustion can be thought of as more beneficial as it uses sludge as an energy source. However, it is...
Effects of alendronate on rate of distraction in rabbit mandibles
TEKİN, UMUT; Tuz, Hakan H.; Onder, Ercument; Ozkaynak, Ozkan; KORKUSUZ, PETEK (Elsevier BV, 2008-10-01)
Purpose: Bisphosphonates are used for inhibiting bone resorption in several diseases. In this experimental study, the effects of alendronate on the mandibular distraction gap in rabbits at 2 different rates were evaluated.
KEDICI, PS; KALIPCILAR, B; BILIR, OG (Elsevier BV, 1992-07-01)
This study compared shear bond strengths of porcelain laminate veneers, fabricated on refractory dies, which were lengthened incisally by 0.5 mm. Specimens were divided into four separate groups. In group A, the teeth were reduced 0.5 mm and the bonding was to enamel. The teeth of the remaining groups were reduced 1.0 mm and the bonding was to dentin. For two of the groups glass ionomer liners were applied before etching. Bonding to enamel was best, with cohesive fractures in porcelain. In the other groups,...
Effect of storage time on mechanical properties of extended-pour irreversible hydrocolloid impression materials
ŞAHİN, VOLKAN; Jodati, Hossein; Evis, Zafer (Elsevier BV, 2020-07-01)
Statement of problem. Recent commercial extended-pour irreversible hydrocolloid impression materials (EPIHIMs) claim to maintain dimensional stability up to 120 hours. However, data regarding their mechanical properties and performance after 120 hours of storage are lacking.
Citation Formats
Ü. Yetiş, “Effect of Ni (II) and Cr (VI) on activated sludge kinetics,” Ph.D. - Doctoral Program, Middle East Technical University, 1988.