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Bu çalışmanın amacı, çinkonun topraktan piroliz katı ürününe stabilize edilmesidir. Bu amaçla, ardışık olarak fitoremediasyon ve piroliz işlemleri uygulanmıştır. Fitoremediasyon aşamasında, çinkoyla kirlenmiş topraklar, ayçiçeği (Helianthus annuus), mısır (Zea mays) ve kanolayla (Brassica napus) temizlenmiştir. Hasattan sonra bitkiler, 35 °C/dk ısıtma hızıyla 500°C sıcaklıkta sabit yatak bir reaktörde piroliz edilmiştir. Fitoremediasyon sonuçlarına göre, en yüksek fitoremediasyon verimi %79 olarak belirlenmiştir. Piroliz katı ve sıvı ürünlerinin temel özelliklerinin yanısıra, Zn içerikleri de analiz edilmiştir. Piroliz sonuçlarına göre, kirlenmiş biyokütlelelerdeki Zn içeriğinin katı üründe stabilize edildiği görülmüştür, The objective of this study was to stabilize of zinc (Zn) from soil to pyrolysis solid product. For this aim, phytoremediation and pyrolysis were sequentially applied. In the first stage of the study, phytoremediation was first applied to zinc contaminated soil via sunflower (Helianthus annuus), corn (Zea mays) and rape (Brassica napus), After harvesting, the plants were pyrolyzed at 500°C with the heating rate of 35 °C/min in a fixed bed stainless steel (380 S) 240 cm3 reactor. The phytoremediation results indicated that high phytoremediation efficiency (79%) were observed. Beside the main property analyses, Zn content and Toxicity Characteristic Leaching Procedure (TCLP) analysis were performed on the pyrolysis solid and liquid products. According to pyrolysis results, Zn content of the contaminated biomass species is fixed into the ash/char fraction.

WOS: 000363294700001, The aim of this study is to evaluate the metal removal ability of three different plants from metal processing sludge containing Pb, Cd, and Zn. Therefore, phytoremediation and pyrolysis were sequentially applied. In the phytoremediation applications, sunflower (Helianthus annuus), corn (Zea mays), and rape (Brassica napus) seeds were sown in sludge/soil mixtures at four different levels (25/75, 50/50, 75/25, 100/0). The chelating agent, ethylenediaminetetraacetic acid, was added to the mixtures for plant uptake during phytoremediation. At the phytoremediation stage, it was noted that rape was the most effective plant for the mixture of 75/25 sludge/soil, with metal removal efficiencies ranging between 80%-90%. At the pyrolysis stage, after harvesting, contaminated plants grown in a 75/25 sludge/soil mixture were pyrolyzed at 500 degrees C, with a heating rate of 35 degrees C/min. The results show that 60%-90% of the initial metal content was held by the solid product. In addition to this, it can be concluded that pyrolysis stabilizes metals into a solid product and that this solid product can be safely landfilled as inert waste since its toxicity leaching value is lower than the limit values., Anadolu University Scientific Research Projects Commission [1102F025], Anadolu University Scientific Research Projects Commission [grant number 1102F025].

WOS: 000371575200001, Bituminous geomembranes, one type of geosynthetics, include a hot bituminous mixture with mineral filler and reinforcement. In this study, boron production waste clay (CW) was used as filler to produce a geosynthetic barrier with bentonite, waste tire, and bitumen. Bentonite and waste tires were used as auxiliary fillers and bitumen as the binder. CW/bitumen, CW/bentonite/bitumen, and CW/waste tire/bitumen mixtures were prepared by using a laboratory mixer at 100 degrees C. Hot mixtures were extruded into strips by using a lab-scale corotating twin screw extruder (L/D: 40) followed by die casting (2mm x 100 mm). Glass fleece or nonwoven polyester was used as reinforcement material and while die casting, both sides of the reinforcement materials were covered with bituminous mixture. Thickness, mass per unit area, tensile strength, elongation at yield, and hydraulic conductivity were used to characterize the geomembranes. Among all geomembranes, nonwoven polyester covered with 30% bitumen-70% boron waste clay mixture (PK-BTM30CW70) was found to be the most promising in terms of structure and mechanical behaviour. After that, consequences of its exposure to distilled water (DW), municipal solid waste landfill leachate (L-MSW), and hazardous waste landfill leachate (L-HW) were examined to use for an innovative impermeable liner on solid waste landfills., TUBITAK (the Scientific and Technological Research Council of Turkey) [113Y122]; Anadolu University Scientific Research Projects Commission [1301F037], This study was supported by TUBITAK (the Scientific and Technological Research Council of Turkey) under Grant no. 113Y122 and Anadolu University Scientific Research Projects Commission under Grant no. 1301F037.

WOS: 000371244600023, PubMed ID: 26858082, The aim of this study was to remediate lead (Pb), cadmium (Cd) and zinc (Zn) from contaminated soil and stabilize to pyrolysis solid product. To accomplish this, phytoremediation of soil contaminated with Pb, Cd and Zn by different plants (sunflower, corn and rape) was performed with and without ethylenediaminetetraacetic acid (EDTA). According to phytoremediation results, rape was the most effective plant with 72 %, 76 % and 77 % removal efficiency for Pb, Cd and Zn, respectively. Also, EDTA addition had no significant effect on translocation of the metals from roots to stems. According to pyrolysis results, Pb, Cd and Zn in the contaminated plants were stabilized in the ash/char fraction. In addition, the solid product can be safely landfilled as inert waste since its toxicity leaching value is lower than the limit values given in the Turkish Regulation on Landfilling of Wastes., Anadolu University Scientific Research Projects Commission [1102F025], This study was supported by the Anadolu University Scientific Research Projects Commission under Grant: 1102F025.

WOS: 000443165200014, The objective of this study is the treatment of cadmium (Cd) contaminated soil and stabilization of cadmium (Cd) in a solid product. For this aim, phytoremediation and pyrolysis were sequentially applied. Phytoremediation was first applied to cadmium contaminated soil via different plants (sunflower, corn and rape). After harvesting, contaminated plants were pyrolyzed. Phytoremediation was realized with different chelate (EDTA) concentrations (0-5-10 mmol/kg). The phytoremediation results indicated that high phytoremediation efficiencies (89.6-93.5%) were observed. Then, contaminated plants were pyrolyzed at 500 degrees C with the heating rate of 35 degrees C/min in a fixed bed 240 m(3) stainless steel reactor (380 S). Beside the main property analyses, Cd content and eluate analysis were performed on the pyrolysis solid and liquid products. According to pyrolysis results, Cd content of the contaminated biomass species is fixed into the ash/char fraction.

In the present study, waste incineration fly ash samples, taken from a clinic and hazardous waste incineration and energy production plant in Turkey, were mixed with brick raw materials in 10%, 20%, 30%, 40% and 50% proportions. These samples were shaped, dried and fired. Subsequent to these phases drying and firing shrinkage, strength, water absorption, color, heavy metal contents (Ni, Cd, Fe, Cr, Cu, Ag) and TCLP analysis were conducted. Additionally, the samples were examined in terms of technical and environmental impacts and their possibility of utilizing in brick industry was explored. In connection with the findings of the present study, and concerning the results of the strength tests as well, it can be claimed that adding fly ash to brick production process in 10% and 20% proportions is convincingly an appropriate process. Moreover, concerning the results of the present study it can be claimed that utilization of maximum 20 % waste incineration fly ashes as additive material in brick industry might be an appropriate stabilization process.