Aziz Şencan - Academia.edu (original) (raw)
Papers by Aziz Şencan
Bangladesh Journal of Botany, 2017
Özet Bu çalışma kapsamında Isparta'da faaliyet gösteren ve akrilik-yün elyaf boyaması yapan b... more Özet Bu çalışma kapsamında Isparta'da faaliyet gösteren ve akrilik-yün elyaf boyaması yapan bir tekstil firmasının atık suyunda kimyasal yöntemle renk giderimi çalışılmıştır. Bu amaçla kuvvetli indirgen ve yükseltgen maddeler kullanılmıştır. İndirgen madde olarak sodyum hidrosülfit, yükseltgen madde olarak ise sodyum hipoklorit, kalsiyum hipoklorit ve hidrojen peroksit kullanılmıştır. Farklı konsantrasyonlarda kimyasal eklendikten sonra farklı zamanlarda Hach DR 5000 UV-Vıs spektrometresi ile Pt-Co birimine göre ölçümler yapılmıştır. Her bir madde için elde edilen veriler madde konsantrasyonu ve zamana göre tablo haline getirilmiştir. Abstract In this study, we study chemically color removal of textile wastewater which obtained from an acrylic-wool dyeing textile factory engaged in Isparta. Strong reducing and oxidizing agents are used for this purpose. Sodium hydrosulfite was used as reducing agent and sodium hypochlorite, calcium hypochlorite and hydrogen peroxide was used as ...
The textile industry consume large amounts of water and chemicals for dyeing and finishing proces... more The textile industry consume large amounts of water and chemicals for dyeing and finishing processes. Due to the variety of organic and inorganic compounds both the dyeing as well as used in other operations, influences the resulting wastewater's characteristics. Colored wastewaters which discharged to recipient waters, reduces the light transmission in water medium, and thus adversely affect the photosynthetic activity. Also accumulation of dyes in some aquatic organisms, increases the risk of toxic and carcinogenic products occurrence. In this context, color removal processes of the textile industry wastewaters which containing dyes have ecologically importance. Chemical purificationmethods for the textile wastewaters, has been the most soughtafter method for many years. Because, the changes which needs to be made in the quality of wastewater, can be easily adjusted with the chemical type and dose. Chemical methods such as chemical precipitation, oxidation and flocculation hav...
Nowadays environmental damage of heavy metals is increasing and that becomes a big problem for hu... more Nowadays environmental damage of heavy metals is increasing and that becomes a big problem for human and human health. Especially after the industrial revolution, increasing of production and consumption materials, adversely affect the environment. Among all the pollutions, heavy metal is an important part. Because they are toxic or poisonous even at low concentration. The most widely used process is activated carbon adsorption for heavy metal adsorption from wastewater. Activated carbon can produce from carbon containing substances. Turkey is an important rose oil producer of the world and every year over 12 000 tons of rose processing wastes produced. In this study, activated carbon was obtained from rose crops of rose oil factories. There are some activation methods for increasing surface area of the carbon. In this study, potassium chlorate (KClO3) was used for increasing carbons surface area. KClO3 never used before for activation. The thermal decomposition of KClO3 (potassium ...
Journal of Chemistry, 2015
In this study, raw hazelnut shells were used to obtain charcoal by pyrolysis at 250°C. The obtain... more In this study, raw hazelnut shells were used to obtain charcoal by pyrolysis at 250°C. The obtained material was subjected to physical, chemical, and physicochemical treatment methods to obtain activated carbons (ACs). Effect of the treatment procedures was determined by measuring the surface area of the produced ACs. In addition, changes in the functional groups of the obtained ACs during these treatments were determined with the Fourier transform infrared spectroscopy (FT-IR). To determine the most effective chemical agent, the charcoal samples were examined for Pb(II) adsorption from aqueous solutions under different pH conditions of 4 to 6. According to the results, the most effective chemical agent was determined as Ca(OCl)2. Effect of microwave and ultrasound treatments was also examined during Pb(II) adsorption by the chemically treated AC. The results showed that chemical treatment with Ca(OCl)2, microwave treatment for 5 minutes, ultrasound treatment for 20 minutes, and pyr...
Süleyman demirel üniversitesi fen-edebiyat fakültesi fen dergisi, Sep 23, 2022
Öz: Son zamanlarda, çevre durumları ve kirlilik giderici ajanlara ilgi, kaynağı fosil olmayan akt... more Öz: Son zamanlarda, çevre durumları ve kirlilik giderici ajanlara ilgi, kaynağı fosil olmayan aktif karbon üretimi ile ilgili araştırmalara gereksinime ivme kazandırdı. Bu nedenle, tarımsal organik lignoselülozik atık malzemeler oldukça dikkat çekmektedir. Çalışmamızda aktif karbon üretiminde nar kabuğu kullanıldı. Nar kabuğundan yüzey alanı yüksek, adsorbsiyon özelliklerine uygun ve gözenek çapı büyük aktif karbon hem fiziksel hem de kimyasal aktivasyon teknikleri kullanılarak elde edilmesi amaçlandı. Kimyasal aktivasyon çalışmalarında ZnCl2 ve AlCl3'ün yüzey alanına etkisi incelendi ve denemeler farklı sıcaklık, süre ve konsantrasyonlar denenerek gerçekleştirildi. Uygun aktif karbon prosesi belirlendi. Sulu çözelti olarak kullanılan meyve suyuna belli derişimde pestisit ve piroliz edilen aktif karbon eklenerek analize alındı. Aktif karbonun, elma suyundaki eklenen pestisiti absorblama kapasitesi ölçüldü. Analiz sonuçlarına göre bu aktif karbonun elma suyuna eklenen pestisitlerin giderimi üzerindeki etkisi incelendi. Meyve suyuna eklenen farklı miktarlardaki pestisitten sonra değişik konsantrasyonlarda aktif karbon ilave edildi. Meyve suyu-pestisit karışımı değişen sürelerde karıştırıldıktan sonra meyve suyu ekstraktı AOAC 2007 Pestisit Analiz Yöntemi ile Quetchers kit kullanılarak analiz edildi. Yapılan deneyler sonucunda aktif karbon üretiminde nar kabuğunun yüksek verimli hammadde olabileceği sonucuna varıldı. Aynı zamanda çalışma koşulları uygun hale getirildiğinde, nar suyu üretiminde atık malzeme olan nar kabuğundan üretilen aktif karbonların meyve suyundan karbendazim pestisitinin uzaklaştırılmasında kullanılabilirliği tespit edildi.
Journal of Hazardous Materials, 2009
In this study, removal of suspended solids (SS) and turbidity from marble processing wastewaters ... more In this study, removal of suspended solids (SS) and turbidity from marble processing wastewaters by electrocoagulation (EC) process were investigated by using aluminium (Al) and iron (Fe) electrodes which were run in serial and parallel connection systems. To remove these pollutants from the marble processing wastewater, an EC reactor including monopolar electrodes (Al/Fe) in parallel and serial connection system, was utilized. Optimization of differential operation parameters such as pH, current density, and electrolysis time on SS and turbidity removal were determined in this way. EC process with monopolar Al electrodes in parallel and serial connections carried out at the optimum conditions where the pH value was 9, current density was approximately 15 A/m(2), and electrolysis time was 2 min resulted in 100% SS removal. Removal efficiencies of EC process for SS with monopolar Fe electrodes in parallel and serial connection were found to be 99.86% and 99.94%, respectively. Optimum parameters for monopolar Fe electrodes in both of the connection types were found to be for pH value as 8, for electrolysis time as 2 min. The optimum current density value for Fe electrodes used in serial and parallel connections was also obtained at 10 and 20 A/m(2), respectively. Based on the results obtained, it was found that EC process running with each type of the electrodes and the connections was highly effective for the removal of SS and turbidity from marble processing wastewaters, and that operating costs with monopolar Al electrodes in parallel connection were the cheapest than that of the serial connection and all the configurations for Fe electrode.
Survival and Sustainability, 2010
... Separation Sci Technol 33(9):13031329 3. Al-asheh S, Lamarche G, Duvnjuk Z (1998 ... Holan Z... more ... Separation Sci Technol 33(9):13031329 3. Al-asheh S, Lamarche G, Duvnjuk Z (1998 ... Holan ZR, Volesky B (1995) Accumulation of cadmium, lead and nickel by fungal and wood ... Khalid N, Rahman A, Ahmad S, Kiani SN, Ahmed J (1997) Adsorption of cadmium from aqueous ...
Environmental Science and Pollution Research
This study aimed to determine the Pb(+2) adsorption capacities of hazelnut shell and activated ca... more This study aimed to determine the Pb(+2) adsorption capacities of hazelnut shell and activated carbon obtained from hazelnut shell. It also aimed to determine the effect of ZnCl2 in the activation process. The hazelnut was pyrolyzed at 250 and 700 °C. For determining the capture speed of the adsorbents, the pseudo-first- and second-order kinetic studies were performed. The Freundlich and Langmuir isotherm models were used to determine adsorption equilibrium. The surface characterization of hazelnut shell and activated carbon was determined by Brunauer-Emmett-Teller (BET) analysis and FTIR spectrum. Pb(+2) adsorption capacity of obtaining activated carbon was determined by ICP-OES analysis. The raw hazelnut shell's BET surface area is 5.92 m(2)/g and the surface area of activated carbons which is pyrolyzed at 250 and 700 °C were determined (270.2 and 686.7 m(2)/g, respectively. The surface area of hazelnut shell, which pyrolyzed at 700 °C after being activated with ZnCl2, was determined to be 736.49 m(2)/g. Results show that physical adsorption process is dominant for the activated carbon pyrolysis at 700 °C but the chemical adsorption is dominant for the activated carbon pyrolysis at lower degrees and for raw hazelnut shell.
Bangladesh Journal of Botany, 2017
Özet Bu çalışma kapsamında Isparta'da faaliyet gösteren ve akrilik-yün elyaf boyaması yapan b... more Özet Bu çalışma kapsamında Isparta'da faaliyet gösteren ve akrilik-yün elyaf boyaması yapan bir tekstil firmasının atık suyunda kimyasal yöntemle renk giderimi çalışılmıştır. Bu amaçla kuvvetli indirgen ve yükseltgen maddeler kullanılmıştır. İndirgen madde olarak sodyum hidrosülfit, yükseltgen madde olarak ise sodyum hipoklorit, kalsiyum hipoklorit ve hidrojen peroksit kullanılmıştır. Farklı konsantrasyonlarda kimyasal eklendikten sonra farklı zamanlarda Hach DR 5000 UV-Vıs spektrometresi ile Pt-Co birimine göre ölçümler yapılmıştır. Her bir madde için elde edilen veriler madde konsantrasyonu ve zamana göre tablo haline getirilmiştir. Abstract In this study, we study chemically color removal of textile wastewater which obtained from an acrylic-wool dyeing textile factory engaged in Isparta. Strong reducing and oxidizing agents are used for this purpose. Sodium hydrosulfite was used as reducing agent and sodium hypochlorite, calcium hypochlorite and hydrogen peroxide was used as ...
The textile industry consume large amounts of water and chemicals for dyeing and finishing proces... more The textile industry consume large amounts of water and chemicals for dyeing and finishing processes. Due to the variety of organic and inorganic compounds both the dyeing as well as used in other operations, influences the resulting wastewater's characteristics. Colored wastewaters which discharged to recipient waters, reduces the light transmission in water medium, and thus adversely affect the photosynthetic activity. Also accumulation of dyes in some aquatic organisms, increases the risk of toxic and carcinogenic products occurrence. In this context, color removal processes of the textile industry wastewaters which containing dyes have ecologically importance. Chemical purificationmethods for the textile wastewaters, has been the most soughtafter method for many years. Because, the changes which needs to be made in the quality of wastewater, can be easily adjusted with the chemical type and dose. Chemical methods such as chemical precipitation, oxidation and flocculation hav...
Nowadays environmental damage of heavy metals is increasing and that becomes a big problem for hu... more Nowadays environmental damage of heavy metals is increasing and that becomes a big problem for human and human health. Especially after the industrial revolution, increasing of production and consumption materials, adversely affect the environment. Among all the pollutions, heavy metal is an important part. Because they are toxic or poisonous even at low concentration. The most widely used process is activated carbon adsorption for heavy metal adsorption from wastewater. Activated carbon can produce from carbon containing substances. Turkey is an important rose oil producer of the world and every year over 12 000 tons of rose processing wastes produced. In this study, activated carbon was obtained from rose crops of rose oil factories. There are some activation methods for increasing surface area of the carbon. In this study, potassium chlorate (KClO3) was used for increasing carbons surface area. KClO3 never used before for activation. The thermal decomposition of KClO3 (potassium ...
Journal of Chemistry, 2015
In this study, raw hazelnut shells were used to obtain charcoal by pyrolysis at 250°C. The obtain... more In this study, raw hazelnut shells were used to obtain charcoal by pyrolysis at 250°C. The obtained material was subjected to physical, chemical, and physicochemical treatment methods to obtain activated carbons (ACs). Effect of the treatment procedures was determined by measuring the surface area of the produced ACs. In addition, changes in the functional groups of the obtained ACs during these treatments were determined with the Fourier transform infrared spectroscopy (FT-IR). To determine the most effective chemical agent, the charcoal samples were examined for Pb(II) adsorption from aqueous solutions under different pH conditions of 4 to 6. According to the results, the most effective chemical agent was determined as Ca(OCl)2. Effect of microwave and ultrasound treatments was also examined during Pb(II) adsorption by the chemically treated AC. The results showed that chemical treatment with Ca(OCl)2, microwave treatment for 5 minutes, ultrasound treatment for 20 minutes, and pyr...
Süleyman demirel üniversitesi fen-edebiyat fakültesi fen dergisi, Sep 23, 2022
Öz: Son zamanlarda, çevre durumları ve kirlilik giderici ajanlara ilgi, kaynağı fosil olmayan akt... more Öz: Son zamanlarda, çevre durumları ve kirlilik giderici ajanlara ilgi, kaynağı fosil olmayan aktif karbon üretimi ile ilgili araştırmalara gereksinime ivme kazandırdı. Bu nedenle, tarımsal organik lignoselülozik atık malzemeler oldukça dikkat çekmektedir. Çalışmamızda aktif karbon üretiminde nar kabuğu kullanıldı. Nar kabuğundan yüzey alanı yüksek, adsorbsiyon özelliklerine uygun ve gözenek çapı büyük aktif karbon hem fiziksel hem de kimyasal aktivasyon teknikleri kullanılarak elde edilmesi amaçlandı. Kimyasal aktivasyon çalışmalarında ZnCl2 ve AlCl3'ün yüzey alanına etkisi incelendi ve denemeler farklı sıcaklık, süre ve konsantrasyonlar denenerek gerçekleştirildi. Uygun aktif karbon prosesi belirlendi. Sulu çözelti olarak kullanılan meyve suyuna belli derişimde pestisit ve piroliz edilen aktif karbon eklenerek analize alındı. Aktif karbonun, elma suyundaki eklenen pestisiti absorblama kapasitesi ölçüldü. Analiz sonuçlarına göre bu aktif karbonun elma suyuna eklenen pestisitlerin giderimi üzerindeki etkisi incelendi. Meyve suyuna eklenen farklı miktarlardaki pestisitten sonra değişik konsantrasyonlarda aktif karbon ilave edildi. Meyve suyu-pestisit karışımı değişen sürelerde karıştırıldıktan sonra meyve suyu ekstraktı AOAC 2007 Pestisit Analiz Yöntemi ile Quetchers kit kullanılarak analiz edildi. Yapılan deneyler sonucunda aktif karbon üretiminde nar kabuğunun yüksek verimli hammadde olabileceği sonucuna varıldı. Aynı zamanda çalışma koşulları uygun hale getirildiğinde, nar suyu üretiminde atık malzeme olan nar kabuğundan üretilen aktif karbonların meyve suyundan karbendazim pestisitinin uzaklaştırılmasında kullanılabilirliği tespit edildi.
Journal of Hazardous Materials, 2009
In this study, removal of suspended solids (SS) and turbidity from marble processing wastewaters ... more In this study, removal of suspended solids (SS) and turbidity from marble processing wastewaters by electrocoagulation (EC) process were investigated by using aluminium (Al) and iron (Fe) electrodes which were run in serial and parallel connection systems. To remove these pollutants from the marble processing wastewater, an EC reactor including monopolar electrodes (Al/Fe) in parallel and serial connection system, was utilized. Optimization of differential operation parameters such as pH, current density, and electrolysis time on SS and turbidity removal were determined in this way. EC process with monopolar Al electrodes in parallel and serial connections carried out at the optimum conditions where the pH value was 9, current density was approximately 15 A/m(2), and electrolysis time was 2 min resulted in 100% SS removal. Removal efficiencies of EC process for SS with monopolar Fe electrodes in parallel and serial connection were found to be 99.86% and 99.94%, respectively. Optimum parameters for monopolar Fe electrodes in both of the connection types were found to be for pH value as 8, for electrolysis time as 2 min. The optimum current density value for Fe electrodes used in serial and parallel connections was also obtained at 10 and 20 A/m(2), respectively. Based on the results obtained, it was found that EC process running with each type of the electrodes and the connections was highly effective for the removal of SS and turbidity from marble processing wastewaters, and that operating costs with monopolar Al electrodes in parallel connection were the cheapest than that of the serial connection and all the configurations for Fe electrode.
Survival and Sustainability, 2010
... Separation Sci Technol 33(9):13031329 3. Al-asheh S, Lamarche G, Duvnjuk Z (1998 ... Holan Z... more ... Separation Sci Technol 33(9):13031329 3. Al-asheh S, Lamarche G, Duvnjuk Z (1998 ... Holan ZR, Volesky B (1995) Accumulation of cadmium, lead and nickel by fungal and wood ... Khalid N, Rahman A, Ahmad S, Kiani SN, Ahmed J (1997) Adsorption of cadmium from aqueous ...
Environmental Science and Pollution Research
This study aimed to determine the Pb(+2) adsorption capacities of hazelnut shell and activated ca... more This study aimed to determine the Pb(+2) adsorption capacities of hazelnut shell and activated carbon obtained from hazelnut shell. It also aimed to determine the effect of ZnCl2 in the activation process. The hazelnut was pyrolyzed at 250 and 700 °C. For determining the capture speed of the adsorbents, the pseudo-first- and second-order kinetic studies were performed. The Freundlich and Langmuir isotherm models were used to determine adsorption equilibrium. The surface characterization of hazelnut shell and activated carbon was determined by Brunauer-Emmett-Teller (BET) analysis and FTIR spectrum. Pb(+2) adsorption capacity of obtaining activated carbon was determined by ICP-OES analysis. The raw hazelnut shell's BET surface area is 5.92 m(2)/g and the surface area of activated carbons which is pyrolyzed at 250 and 700 °C were determined (270.2 and 686.7 m(2)/g, respectively. The surface area of hazelnut shell, which pyrolyzed at 700 °C after being activated with ZnCl2, was determined to be 736.49 m(2)/g. Results show that physical adsorption process is dominant for the activated carbon pyrolysis at 700 °C but the chemical adsorption is dominant for the activated carbon pyrolysis at lower degrees and for raw hazelnut shell.