With the development of industry, the rate of industrial dyes in municipal wastewater is increasi... more With the development of industry, the rate of industrial dyes in municipal wastewater is increasing day by day. The use of environmentally friendly, economical and highly efficient adsorbents for their removal has recently gained importance. In this study, crystal violet (CV) in wastewater was removed by carbonizing waste coffee (wC) and duckweed (DW) formed on the surface of municipal wastewater treatment plant pools. DW and wC samples were carbonized together and separately at N2 of 100 mL/min and 800 °C in a tubular reactor for 90 minutes. Adsorption experimental studies were performed at adsorbent amount of 0.5 g, 6 pH, temperature of 30 °C, initial concentration of 50-100 mg/L and contact time of 60 min. SEM and FTIR analyzes were performed for the characterization of the adsorbents. In XRD analysis, wC and carbonized wC (cwC) were amorphous, and co-carbonized wC and DW (cDW/wC) was semi-crystalline. The most effective adsorbent for CV dye removal from wastewater is DW/wC. Its adsorption capacity was 8.29 mg/L, and its CV removal was 83%.
Endüstrinin gelişmesiyle belediye atık sularda endüstriyel boyaların oranı her geçen gün artmakta... more Endüstrinin gelişmesiyle belediye atık sularda endüstriyel boyaların oranı her geçen gün artmaktadır. Onların uzaklaştırılmasında çevre dostu, ekonomik ve yüksek verimli adsorbanların kullanımı son zamanlarda önem kazanmaktadır. Bu çalışma, atık kahve ve belediye atık su arıtma tesisi havuzlarının yüzeyinde oluşan su mercimeği (cDW) birlikte karbonize edilerek atık sularda bulunan kristal violet (CV) giderimi yapıldı. DW ve wC numuneleri 800 °C sıcaklıkta, 90 dak kalma süresi ve 100 ml/dk N2 ortamında boru şeklindeki bir reaktörde birlikte ve ayrı ayrı karbonize edildi. Adsorpsiyon deneysel çalışmaları 0,5 g adsorbent miktarı, 6 pH, 30 °C sıcaklık, 50-100 mg/L başlangıç konsantrasyonu ve 60 dakikalık temas süresinde gerçekleştirildi. Adsorbentlerin karakterizasyonu SEM ve FTIR analizleri yapıldı. FTIR ve SEM analizleri göre DW, wC ve DW/wC adsorbentleri CV boya giderimi için uygundur. En yüksek adsorbsiyon kapasitesi ve CV giderimi DW ve wC'nin birlikte karbonizasyonunda sırasıy...
IOP Conference Series: Earth and Environmental Science
In this study, the co-liquefaction of Elbistan lignite and biomass investigated by using apricot ... more In this study, the co-liquefaction of Elbistan lignite and biomass investigated by using apricot kernel shell as a biomass type. The liquefaction experiments were carried out under inert atmosphere and non-catalytic conditions. The effect of particle size, coal/biomass ratio, and reaction temperature were examined as a process variable to determine the effect of process parameters on total conversion of products obtained by liquefaction and the conversion of liquefaction products.
IOP Conference Series: Earth and Environmental Science
Polyethylene terephthalate, which is used in many applications today, is very important in terms ... more Polyethylene terephthalate, which is used in many applications today, is very important in terms of nature and source in order to ensure recycling by appropriate methods after use. Because polyethylene terephthalate is a durable and long-lasting thermoplastic which is resistant to many environmental influences. Recovering residual plastics has become mandatory. In this study, the conversion of waste plastic to a new liquid fuel by polyethylene terephthalate (PET) pyrolysis method was investigated. Sodium boron hydride (NaBH4) was used as both catalyst and hydrogen donor in the pyrolysis experiments. Pyrolysis experiments were carried out in a batch reactor under catalytic and non-catalytic conditions, reaction time of 15-90 minutes, reaction temperature of 325-425 °C, solid/solvent ratio of 1/4 and initial nitrogen gas pressure of 20 bar. According to the results obtained, the most suitable reaction temperature was found to be 375-425 °C and the reaction time was 30 minutes. At the reaction times of 30 minutes, the maximum total conversion in non-catalytic conditions of waste polyethylene terephthalate samples was 53.1% at 400 °C reaction temperature and the highest oil + gas yield was 43.7% at 425 °C reaction temperature. In the pyrolysis of polyethylene terephthalate samples in the presence of sodium boron hydride, the maximum total conversion was 55.3% at 400 °C reaction temperature and the highest oil + gas yield was 44.6% at 425 °C reaction temperature. As a result, it can be argued that sodium boron hydride used in pyrolysis experiments of waste polyethylene terephthalate acts as both catalytic and hydrogen donor.
With the development of industry, the rate of industrial dyes in municipal wastewater is increasi... more With the development of industry, the rate of industrial dyes in municipal wastewater is increasing day by day. The use of environmentally friendly, economical and highly efficient adsorbents for their removal has recently gained importance. In this study, crystal violet (CV) in wastewater was removed by carbonizing waste coffee (wC) and duckweed (DW) formed on the surface of municipal wastewater treatment plant pools. DW and wC samples were carbonized together and separately at N2 of 100 mL/min and 800 °C in a tubular reactor for 90 minutes. Adsorption experimental studies were performed at adsorbent amount of 0.5 g, 6 pH, temperature of 30 °C, initial concentration of 50-100 mg/L and contact time of 60 min. SEM and FTIR analyzes were performed for the characterization of the adsorbents. In XRD analysis, wC and carbonized wC (cwC) were amorphous, and co-carbonized wC and DW (cDW/wC) was semi-crystalline. The most effective adsorbent for CV dye removal from wastewater is DW/wC. Its adsorption capacity was 8.29 mg/L, and its CV removal was 83%.
Endüstrinin gelişmesiyle belediye atık sularda endüstriyel boyaların oranı her geçen gün artmakta... more Endüstrinin gelişmesiyle belediye atık sularda endüstriyel boyaların oranı her geçen gün artmaktadır. Onların uzaklaştırılmasında çevre dostu, ekonomik ve yüksek verimli adsorbanların kullanımı son zamanlarda önem kazanmaktadır. Bu çalışma, atık kahve ve belediye atık su arıtma tesisi havuzlarının yüzeyinde oluşan su mercimeği (cDW) birlikte karbonize edilerek atık sularda bulunan kristal violet (CV) giderimi yapıldı. DW ve wC numuneleri 800 °C sıcaklıkta, 90 dak kalma süresi ve 100 ml/dk N2 ortamında boru şeklindeki bir reaktörde birlikte ve ayrı ayrı karbonize edildi. Adsorpsiyon deneysel çalışmaları 0,5 g adsorbent miktarı, 6 pH, 30 °C sıcaklık, 50-100 mg/L başlangıç konsantrasyonu ve 60 dakikalık temas süresinde gerçekleştirildi. Adsorbentlerin karakterizasyonu SEM ve FTIR analizleri yapıldı. FTIR ve SEM analizleri göre DW, wC ve DW/wC adsorbentleri CV boya giderimi için uygundur. En yüksek adsorbsiyon kapasitesi ve CV giderimi DW ve wC'nin birlikte karbonizasyonunda sırasıy...
IOP Conference Series: Earth and Environmental Science
In this study, the co-liquefaction of Elbistan lignite and biomass investigated by using apricot ... more In this study, the co-liquefaction of Elbistan lignite and biomass investigated by using apricot kernel shell as a biomass type. The liquefaction experiments were carried out under inert atmosphere and non-catalytic conditions. The effect of particle size, coal/biomass ratio, and reaction temperature were examined as a process variable to determine the effect of process parameters on total conversion of products obtained by liquefaction and the conversion of liquefaction products.
IOP Conference Series: Earth and Environmental Science
Polyethylene terephthalate, which is used in many applications today, is very important in terms ... more Polyethylene terephthalate, which is used in many applications today, is very important in terms of nature and source in order to ensure recycling by appropriate methods after use. Because polyethylene terephthalate is a durable and long-lasting thermoplastic which is resistant to many environmental influences. Recovering residual plastics has become mandatory. In this study, the conversion of waste plastic to a new liquid fuel by polyethylene terephthalate (PET) pyrolysis method was investigated. Sodium boron hydride (NaBH4) was used as both catalyst and hydrogen donor in the pyrolysis experiments. Pyrolysis experiments were carried out in a batch reactor under catalytic and non-catalytic conditions, reaction time of 15-90 minutes, reaction temperature of 325-425 °C, solid/solvent ratio of 1/4 and initial nitrogen gas pressure of 20 bar. According to the results obtained, the most suitable reaction temperature was found to be 375-425 °C and the reaction time was 30 minutes. At the reaction times of 30 minutes, the maximum total conversion in non-catalytic conditions of waste polyethylene terephthalate samples was 53.1% at 400 °C reaction temperature and the highest oil + gas yield was 43.7% at 425 °C reaction temperature. In the pyrolysis of polyethylene terephthalate samples in the presence of sodium boron hydride, the maximum total conversion was 55.3% at 400 °C reaction temperature and the highest oil + gas yield was 44.6% at 425 °C reaction temperature. As a result, it can be argued that sodium boron hydride used in pyrolysis experiments of waste polyethylene terephthalate acts as both catalytic and hydrogen donor.
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