The purpose of this research is to investigate the drying kinetics and determine the suitable drying method of prina, which is obtained after pressing of olives in olive oil factories, and which cannot be used efficiently in certain sectors. Drying experiments were performed at drying temperatures of 60°C, 70°C, and 80°C at a fixed air velocity of 2 m/s using a hot air dryer and with microwave powers of 90 W, 360 W, and 600 W using a microwave dryer. The prina layer thicknesses were selected as 7, 9, and 11 mm for both drying methods. The minimum energy consumption values were measured as 42.0 Wh for 600 W power level and 7 mm layer thickness, and 10260 Wh for 7 mm layer thickness and 80°C temperatures. It was found that energy consumption during hot air drying was more than that of microwave drying. As a result, the suitable dryer and thickness of layer were selected as microwave dryer and 7 mm, respectively. The results of statistical analyses showed that the most suitable model to define the drying behavior of prina samples were found to be the Page model for the microwave dryer and Wang & Singh model for the hot air dryer. Also, penetration depth, the loss tangent value (tanδ), dielectric constant of material (ϵ^ı), and dielectric loss factor (ϵ^ıı) of dried prina were calculated as 34.51 cm, 0.1059, 75.65, and 8.01, at 2450 MHz, respectively.

Electromagnetic (EM) shielding has become an essential element in the modern world alongside the increased use of electronic products and telecommunication equipment. We are surrounded by electromagnetic fields that have inevitably become formidable in our lives. It is possible to absorb EM waves by adding materials. Researches have focused the addition of different additives into the cement based mixture to increase the Electromagnetic (EM) shielding. This study aims to investigate the performance of carbon nanomaterial on mechanical, electromagnetic shielding properties of composite. Hence, samples were produced using obtained cement composites. After 28 days of curing, ultrasonic pulse velocity, flexural and compressive strength, water absorption tests and electromagnetic shielding were implemented for samples. As a result of this research, it was concluded that electromagnetic shielding was formed as the percentage carbon nanotube contribution increased, and electromagnetic pollution was partially prevented.

This study examines stabilization/solidification techniques for red mud/cement systems that involve the production of construction products while minimizing contamination and recycling the red mud. In these techniques, the polluted components of red mud are fixed in a cement body via adsorption and confinement mechanisms and thus, the possible impact of these pollutants on the environment is minimized. In the first step of this study, the physical, chemical, radioactive and mineralogical properties of the material used were determined. Second, red mud was used to replace portland cement in the following proportions: 0, 5, 10, 15, 20, 25, 30, 40 and 50 % of portland cement by weight. Finally, the usability of red mud as a construction product and the environmental effects of such usage were determined.

Doğal kaynaklarımız, ülke nüfusunun artması ve tüketim alışkanlıklarının değişmesi nedeniyle azalmaktadır. Kaynakların sınırlı olduğu ve tüketimin hızla artığı ülkemizde, geri dönüşüm büyük bir önem kazanmıştır. Bu sebeple öncelikle kütlece %0, %2, %4, %6, %8 ve %10 oranlarında kumun yerine yumurta kabuğu, çimento ve su kullanılarak harçlar üretilmiştir. Üretilen harç karışımları, 1 gün sonra kalıplardan çıkarılıp, 20 ± 2 °C kirece doygun su içerisine konulmuştur. Numuneler 28 günlük kür süresince havuzda bekletilmiştir. 28 gün sonra kür havuzundan çıkarılan numunelerde basınç ve eğilme dayanımı ve su emme deneyleri yapılmıştır. Elde edilen deney sonuçlarına göre yumurta kabuğunun beton dayanımı üzerinde ne şekilde etkidiği belirlenmiştir.

T he wastes of the factories, which manufacture olive oil, one of the important product materials of our country, pollute the environment. Recycling of the wastes, which pollute the environment, is recently the goal of the environment friendly technologies. The pollutions consisting of various industrial wastes have increased nowadays and caused pretty important environmental problems. The wastes occurred in the olive oil factories generally in Mediterranean countries are one of the important pollutants of the agricultural industry. The olive oil factory waste includes organic substances such as nitrogenous compounds, toxic substances, sugars, organic acids and waste oil, which have commercial importance [1]. Olive pomace is a product consisting of the remaining seed, rind and pomace after the oil is extracted from the olive. The oil and moisture content of the obtained olive pomace changes depending on the applied procedure after the oil extraction process [2]. Olive pomace oil output obtained after getting the olive oil is directly linked to the olive oil production since it is a secondary oil. Even though the olive pomace and olive pomace oil depends on the olive growing technique, climate, soil, variety features and the technology