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Найденный: 122 Экземпляр 0.000 sn

Кафедра : Çevre Mühendisliği B ... ✕

Коллекция [1]

Ученые [16]

Устойчивое развитие ООН [12]

Факультет / Институт [1]

Вид публикации [4]

Год публикации [13]

Язык [3]

Источник [35]

Базы данных [15]

Вид индекса [5]

Вид индекса 2 [2]

Издатель [33]

Кафедра [1]

Национальный/Международный [2]

Тематический рубрикатор [35]

10XSBF Bone-Like Hydroxyapatite Coating of Ti-6Al-4V with Microwave Irradiation and its Antibacterial Properties

Mustafa DOLAZ

The surfaces of titanium (Ti-6Al-4V) implants, which are widely preferred as implant material in medicine and dentistry, are biomimetically coated with nanohydroxyapatite (nHAp) in simulated body fluid (10XSBF) with microwave-assisted 10-f time concentration solution. A second layer was formed with different amounts of non-toxic AgNO3 to impart antibacterial properties to the implant materials coated with nHAp. In comparison of uncoated implants with nHAp and Ag-coated Ti-6Al-4V implants, surface morphologies were evaluated by SEM analysis, phase grade and structure were evaluated by XRD, and ...Более

Статья 2022 Mühendislik Fakültesi Transactions of the Indian Institute of Metals76 ( 5 ) 23 Просмотры

The Oxidation Behavior of Potato Starch and Benzyl Alcohol via Peroxide in the Catalysis of Metal Complexes

Mustafa DOLAZ

Two new Schiff bases ligands (HL1 and HL2) and their Co2, Mn2, Fe3, Ru3, Cr3, and VO2 complexes were synthesized and characterized by FT-IR, 1H-NMR, and Mass spect. and analytical methods. A single-crystal X-ray diffraction study determined the molecular structure of HL1. The catalytic effects of metal complexes on benzyl alcohol and potato starch (PS) oxidation were compared in an H-2O-2 medium. The percent conversion of benzyl alcohol to benzaldehyde and benzoic acid was determined by Gas Chromatography. [Co(L-1)(2)], [Mn(L-1)(2)], [Co(L-2)(2)], and [Mn(L-2)(2)] showed the highest catalytic ...Более

Статья 2022 Mühendislik Fakültesi Starch-Starke8 ( 9 ) 60 Просмотры

Ultrasound-assisted photocatalytic decomposition of rifadin with biochar and CNT-based NiCr layered double hydroxides

Mehmet KOBYA

Modification of layered double hydroxides (LDHs) is known to be beneficial for boosting the consistent formation of reactive oxygen species (ROSs) and enhancing the photocatalytic process. Herein, a facile synthesis method for preparing carbon nanotube (CNT) and biochar (BC)-based NiCr LDH (NC) nanocomposites as a sonophotocatalyst for the efficient degradation of rifadin (RA) was provided. The formation of thin nanosheet structures of NC along with porous and nanotube structures of BC and CNT was well approved by scanning electron microscope (SEM) and high-resolution transmission electron mic ...Более

Статья 2023 Mühendislik Fakültesi Surfaces and Interfaces36 54 Просмотры

A techno-economical assessment of treatment by coagulation-flocculation with aluminum and iron-bases coagulants of landfill leachate membrane concentrates

Mehmet KOBYA

Landfill leachate treatment involved with the membrane bioreactor (MBR) combined with membrane treatment via nanofiltration (NF) and/or reverse osmosis (RO) is widely used in Turkey. This treatment produces landfill leachate membrane concentrates (LLMCs) with an undesirably high concentration of contaminants. In the study, two different nanofiltration concentrates of leachate were coagulated. Coagulant dosages from 0.10 to 5.0 g of Me3/L (Me3: Al3 or Fe3), and the pH values ranged from 4.0 to 8.0 and 3.0-9.0 for Al-based and Fe-based coagulants, respectively. The most efficient pH values were ...Более

Статья 2023 Mühendislik Fakültesi Chemosphere314 75 Просмотры

Perfluorooctanoic acid (PFOA) removal from real landfill leachate wastewater and simulated soil leachate by electrochemical oxidation process

Mehmet KOBYA

Poly and perfluoroalkyl compounds (PFASs) are a group of chemicals that are widely used and are difficult to purify. Within this group, perfluorooctanoic acid (PFOA), known for its highly polar and strong carbon-fluorine bonds, is a frequently encountered species in surface water, drinking water, and groundwater. In this study, we investigated the efficiency of electrooxidation (EO) in PFOA removal, optimization of EO parameters, and groundwater simulation in a realistic scenario. The EO optimization experiments were performed with a boron-doped diamond (BDD) anode for different values of pH, ...Более

Статья 2022 Mühendislik Fakültesi Environmental Technology & Innovation28 46 Просмотры

Arsenic Removal by Electrocoagulation

Mehmet KOBYA

Because of the toxic impacts on human health, the arsenic (As) limit value in drinking water was decreased from 50 to 10 μg l −1 by the relevant authorities (WHO 1993; US EPA 2001). In this case, the problem of As pollution in natural water resources used for drinking water has grown even more and turned into a global crisis. According to reports in many parts of the world, over about 230 million people appear to be affected by high arsenic concentrations in groundwater. In this case, it turned out that there was a great need for cost-effective and environmentally friendly technologies from dr ...Более

Глава книги 2022 Mühendislik Fakültesi Arsenic in Plants: Uptake, Consequences and Remediation Techniques 13 Просмотры

Impact of Kara-Keche lignite mining on the Kara-Keche River water composition and properties = Влияние разработки Кара-Кечинского буроугольного месторождения на состав и свойства вод реки Кара-Кече

Kanatbek KOCOBAYEV | Nurzat TOTUBAYEVA | Nurzat ŞAYKİYEVA

On the evidence of the earlier research findings, as well as the full-scale and lab-scale test data of 2019–2020, this article describes the ecological situation at Kara-Keche lignite field being developed by five mining companies in the Jumgal district of the Naryn Region in the Kyrgyz Republic. It is found that the field development proceeds with insufficient adherence to legal documents and has a considerable adverse influence on the environment and water bodies. Many large-volume refuse dumps have no isolation from natural water bodies, which ends with acute pollution of the latter. Contam ...Более

Статья 2022 Mühendislik Fakültesi Горный журнал / Gornyi Zhurnal ( 12 ) 132 Просмотры

Sorption characteristics of zeolite and bentonite natural adsorbents modified complex

Zarlık MAYMEKOV

The main objective of our study is to obtain a complex compound from natural adsorbents to purify wastewater with simultaneous sorption of chemical and microbiological substances contained therein, which contribute to disinfection and softening of water, increasing the degree of treated water saturation with calcium, magnesium salts and trace elements, while not requiring the use of sophisticated equipment. The technical result is to create a complex of adsorbents with the sorbing ability of chemical and microbiological pollution, disinfecting and softening water, enriching it with calcium ion ...Более

Статья 2020 Mühendislik Fakültesi News of the National Academy of Sciences of the Republic of Kazakhstan-Series of Geology and Technical Sciences442 ( 4 ) 63 Просмотры

Synergistic effect of Fe and Co metals for the enhanced activation of hydrogen peroxide in the heterogeneous electro-Fenton process by Co-doped ZnFe layered double hydroxide

Mehmet KOBYA

Heterogeneous electro-Fenton (EF) is a powerful technology for the removal of emerging organic pollutants from wastewater. However, the development of catalysts with high activity towards the production of •OH by decomposing H2O2 remains a challenge. Herein, Co-doped ZnFe LDH as a heterogeneous catalyst with 2D plate-like morphology was produced by a co-precipitation method. Co-doping increased the pore volume of ZnFe LDH from 0.188 cm3/g to 0.2711 cm3/g and pore diameter from 5.305 nm and 9.39 nm. EF process consisted of a hydrothermally activated graphite felt cathode and a platinum plate an ...Более

Статья 2022 Mühendislik Fakültesi Journal of Environmental Chemical Engineering10 ( 6 ) 68 Просмотры

Identifying Geogenic and Anthropogenic Aluminum Pollution on Different Spatial Distributions and Removal of Natural Waters and Soil in Canakkale, Turkey

Mehmet KOBYA

The Çanakkale–Kirazlı region (Turkey) is enriched with minerals, especially aluminum (Al), which dangerously get transported into aquatic media due to several mining and geological activities in recent years. In this study, Al and other potentially toxic metals (PTMs) including B, Ba, Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb, Si, and Zn, in both water and soil samples, were measured for quality determination. Selected metals were also analyzed by the enrichment factor (EF), the geoaccumulation index (Igeo), the contamination factor (CF), and the pollution load index (PLI) to evaluate both water and soil ...Более

Статья 2023 Mühendislik Fakültesi ACS Omega8 ( 9 ) 39 Просмотры

Tuned CuCr layered double hydroxide/carbon-based nanocomposites inducing sonophotocatalytic degradation of dimethyl phthalate

Mehmet KOBYA

This study is the first to explore the possibility of utilizing CuCr LDH decorated on reduced graphene oxide (rGO) and graphene oxide (GO) as sonophotocatalysts for the degradation of dimethyl phthalate (DMP). CuCr LDH and its nanocomposites were successfully fabricated and characterized. Scanning electron microscopy (SEM) along with high-resolution transmission electron microscope (HRTEM) both evidenced the formation of randomly oriented nanosheet structures of CuCr LDH coupled with thin and folded sheets of GO and rGO. The impact of diverse processes on the degradation efficiency of DMP in t ...Более

Статья 2023 Mühendislik Fakültesi Ultrasonics Sonochemistry95 67 Просмотры

No Evidence of an Elevation Effect Caused by Temperature Differences on Soil Microbial Properties in a Walnut Fruit Forest in Kyrgyzstan

Cıldız ÖSKÖNBAEVA

This study is to investigate the effect of differences in annual average temperature on soil microbial communities as caused by elevation in walnut-fruit forests in Kyrgyzstan with similar vegetation. Soil samples (n 10 per site) were collected from top- and subsoil at three elevation levels (1000, 1300 and 1600 m above sea level) with an average temperature difference of 1.3 °C between sites and analysed for soil chemical and biological properties. All soil properties showed high variability within, but most revealed no differences between elevation levels. Microbial biomass, activity and com ...Более

Статья 2023 Mühendislik Fakültesi Journal of Soil Science and Plant Nutrition23 ( 2 ) 39 Просмотры