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    Adsorption of crystal violet dye with selenium nanoparticles obtained by green synthesis from cherry (Prunus avium L.) fruit stalk
    (2024) Solmaz, Alper; Turna, Talip; Baran, Ayşe
    The rapid development of the global production printing and dyeing industry has led to an increase in the demand for various dyes. Crystal violet (CV), a versatile dye, is widely used in the textile industry and other applications. The reason for its widespread use is its effectiveness and the vivid color it gives to fabrics.CV dye is a water-soluble, toxic, resistant organic dye that is quite dangerous for the ecosystem and causes environmental pollution. Therefore, it must be removed before being released into the recipient environment. This study synthesized selenium nanoparticles (Se NPs) from agricultural Prunus avium L. (PaL.) wastes and removed CV dye. In batch adsorption tests, the effects of pH, amount of adsorbent, time, initial concentration, and temperature were investigated. In this study, where 3 different kinetic and isotherm models were tested, it was determined that the most suitable kinetic and isotherm models for the removal of CV dye with PaL-Se NPs were Pseudo second order (R2:0.999) and Langmuir (R2:0.997), respectively. Additionally, the maximum adsorption capacity (qmax) was calculated as 142.61 mgCV/g PaL-Se NP. Accordingly, it can be said that low-cost PaL-Se NPs synthesized by environmentally friendly methods are a suitable alternative for the removal of CV dye.
  • [ X ]
    Öğe
    Adsorption of crystal violet dye with selenium nanoparticles obtained by green synthesis from cherry (Prunus avium L.) fruit stalk
    (Gültekin ÖZDEMİR, 2024) Solmaz, Alper; Turna, Talip; Baran, Ayşe
    Crystal violet (CV) dye is a water-soluble, toxic, resistant organic dye that is quite dangerous for the ecosystem and causes environmental pollution. This study synthesized selenium nanoparticles (Se NPs) from agricultural Prunus avium L. (PaL.) wastes and removed crystal violet (CV) dye. In batch adsorption tests, the effects of pH, amount of adsorbent, time, initial concentration, and temperature were investigated. In this study, where 3 different kinetic and isotherm models were tested, it was determined that the most suitable kinetic and isotherm models for the removal of CV dye with PaL-Se NPs were Pseudo second order (R2:0.999) and Langmuir (R2:0.997), respectively. Additionally, the maximum adsorption capacity (qmax) was calculated as 142.61 mgCV/g PaL-Se NP. Accordingly, it can be said that low-cost PaL-Se NPs synthesized by environmentally friendly methods are a suitable alternative for the removal of CV dye.
  • Küçük Resim
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    Ecofriendly synthesis of selenium nanoparticles using agricultural Citrus fortunella waste and decolourization of crystal violet from aqueous solution
    (Wiley, 2024) Solmaz, Alper; Turna, Talip; Baran, Ayşe
    In this study, the reuse of Citrus fortunella (CF) plant waste, an agricultural product, was evaluated within the scope of sustainability. In this context, selenium nanoparticles (CF-Se NPs) were synthesized from CF waste extracts and crystal violet (CV) dye was removed. The characteristic structure of the synthesized CF-Se NPs was determined by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray (EDX), Fourier transform infrared spectroscopy (FTIR), UV-vis spectroscopy, and point of zero charge (pH(pzc)). Batch adsorption tests were applied to determine the effect of the synthesized CF-Se NPs on CV removal. Four different kinetic and isotherm models were examined using error analysis functions. While the particle size of CF-Se NPs was determined as 27.58 nm, the pH(pzc) value was calculated as 9.40, the average surface charge distribution was -24.1 mV, and mass losses were 9.03% and 13.42% at 334.99 and 739.21(degrees)C, respectively. The most suitable kinetic and isotherm model for CV removal with CF-Se NPs was determined to be pseudo-second-order with a R-2-value of 0.999 and Freundlich with R-2-value of 0.993, and the q(max )was calculated as 23.55 mgCV/gCF-SeNPs. The effectiveness of CF-Se NPs synthesized from waste in CV removal is a remarkable issue in terms of sustainable production.
  • Küçük Resim
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    Green synthesis study: Adsorption of congo red dye with selenium nanoparticles obtained from Prunus Armeniaca L. leaf waste
    (John Wiley and Sons Inc., 2024) Turna, Talip; Solmaz, Alper; Baran, Ayşe
    In this study, it was aimed to remove Congo Red (CR) dye in aqueous solution by biosynthesized Selenium Nanoparticles from Prunus armeniaca L. (PAL-SeNPs) leaf wastes by green synthesis method. The characteristic structure of PAL-SeNPs was determined by UV-vis spectroscopy, X-ray diffraction (XRD), Brunauer–Emmett–Teller (BET), scanning electron microscope (SEM), energy dispersive X-ray (EDX), fourier transform infrared spectroscopy (FTIR), thermogravimetry-differential thermal analysis (TGA-DTA), dynamic light scattering (DLS), zetasizer, and point of zero charge (pHpzc). The effects of pH, adsorbent amount, time, initial concentration, and temperature were investigated by batch adsorption studies. 2 different kinetic and 4 isotherm models were tested and error analysis functions were determined for the most suitable model. Accordingly, the particle size, crystallinity, pHpzc value and average surface charge of PAL-SeNPs were determined as 9.969 nm, 48.50 %, 3.47, and −23.6 mV, respectively. Also, the most suitable kinetic and isotherm models for the removal of CR dye with PAL-SeNPs were found as Pseudo-second-order and Freundlich, with R2 values of 0.996, respectively. Also, where the optimum pH was 7.00, the maximum adsorption capacity was calculated as 96.59 mgCR/gPAL-SeNPs. The results obtained show that environmentally friendly and low-cost PAL-SeNPs produced by the green synthesis method are a suitable alternative for the removal of CR dye.
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    Preparation and characterization of activated carbons from Lemon Pulp for oxytetracycline removal
    (Springer Science and Business Media, 2023) Solmaz, Alper; Karta, Mesut; Depçi, Tolga; Turna, Talip; Sarı, Zeynel Abidin
    This study aims to remove oxytetracycline (OTC) that harms the ecosystem, with activated carbon (LPAC) obtained from Lemon Pulp (LP). Characterization and properties of LPAC were analyzed by Brunauer–Emmett–Teller (BET), Fourier transform infrared spectroscopy (FTIR), scanning electron microscope (SEM), X-ray diffraction (XRD) and point of zero charge (pHPZC) analyses. BET surface area, pore volume and pHPZC of LPAC produced by carbonization at 400 °C and activation with KOH at 800 °C were obtained as 1333.01 m2/g, 0.391 cm3/g, and 6.81, respectively. pH, reaction time, initial OTC concentration, and adsorbent amounts were optimized in the adsorption study performed with LPAC with high porosity and micropores. Kinetic evaluation was made with pseudo-first-order, pseudo-second-order, and intra-particle diffusion models and Freundlich, Langmuir, and Temkin equations are used to investigate their isotherms under reaction equilibrium conditions, and also the results were analyzed by statistical method (ANOVA). In pseudo-second-order kinetic and Freundlich isotherm models, where the best results were obtained, R 2 values were calculated as 0.999 and 0.995, respectively. Maximum OTC removal efficiency was found as 104.22 mg/g. Overall, this research indicates that LPAC for the treatment of water contaminated with antibiotics is environmentally friendly green material. Graphical Abstract: [Figure not available: see fulltext.]
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    Production and characterization of activated carbon from pomegranate peel for pharmaceutical waste (Paracetamol) removal: Response surface methodology application
    (Institute for Ionics, 2023) Solmaz, Alper; Sarı, Zeynel Abidin; Karta, Mesut; Turna, Talip; Yücel, Ayşegül; Depci, Tolga
    In this study, the goal was to utilize activated carbon (designated as PPAC) derived from pomegranate peel (PP) for the removal of paracetamol (PCM). The distinctive structure of PPAC activated with KOH at 800 C was characterized by X-ray diffraction (XRD), Brunauer–Emmett–Teller (BET), Fourier transform infrared spectroscopy (FTIR), and Scanning Electron Microscope (SEM), revealing a surface area of 692.07 m2/g and a pore diameter of 0.429 cm3/g. Response surface methodology (RSM) was used to determine the relationship between input parameters such as PCM concentration, PPAC amount, time, pH and temperature parameters and the resulting PCM concentration output. Eight kinetic models and seven isotherm models were examined and compared. As a result, a PCM removal capacity of 214 mg/g was attained, with the most fitting kinetic model being Pseudo Second-Order (R 2: 0.997) and the most suitable isotherm model being Redlich–Peterson (R 2: 0.999). According to the Response Surface Methodology (RSM) results, the most effective parameters are time, PPAC amount, initial PCM concentration and pH, respectively. This investigation provides substantial evidence for the viability of utilizing PPAC as an economical and efficient adsorbent in PCM removal processes.
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    Removal of paracetamol from aqueous solution with zinc oxide nanoparticles obtained by green synthesis from purple basil (Ocimum basilicum L.) waste
    (Springer Heidelberg, 2024) Solmaz, Alper; Turna, Talip; Baran, Ayşe
    In this study, environmentally friendly zinc oxide nanoparticles (OB-ZnO NPs) were synthesized using Ocimum basilicum (OB) plant waste extract, and the removal of paracetamol (PCM) from pharmaceutical wastes with toxic effects on the ecosystem was investigated. The characteristic structure of synthesized OB-ZnO NPs was determined by X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET), scanning electron microscope (SEM) and energy dispersive X-ray (EDX), Fourier transform infrared spectroscopy (FT-IR), dynamic light scattering (DLS), Zetasizer, thermogravimetry-differential thermal analysis (TGA-DTA), and UV-vis spectroscopy. The effect of the obtained OB-ZnO NPs on PCM removal was determined by batch adsorption tests. In the study in which 6 different kinetic and isotherm models were examined, error analysis functions were used to determine the most suitable model. Accordingly, the crystal structure of biosynthesized OB-ZnO NPs has a particle size of 30.39 nm, a surface area of 13.826 m(2)/g, and a pore volume of 0.0475 cm(3)/g. Since OB-ZnO NPs have a zeta potential of - 22.1 mV and a mass loss of 33% at about 750 C-o, these NPs show that they are durable at high temperatures. When the PCM removal mechanisms with OB-ZnO NPs were examined, it was determined that the most suitable kinetic and isotherm model was the Elovich model with an R-2 value of 0.989 and the Redlich-Peterson model with an R-2 value of 0.999. In the study, which reached 23 mgPCM/gOB-ZnO NP removal efficiency, it was revealed that OB-ZnO NPs obtained from waste plants have the potential to be used in the removal of pharmaceutical wastes.
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    Sürdürülebilir kent yönetimi ve yeşil altyapı kavramı kapsamında çevreci yaklaşımlar: İskenderun örneği
    (Dicle Üniversitesi Mühendislik Fakültesi, 2022) Turna, Talip; Solmaz, Alper
    Yaşam dinamiklerinin farklılaşmasından doğan göçler nedeniyle kent nüfusları beklenenin üzerinde gerçekleşmektedir. Kentsel alanların bu göçleri karşılayabilecek altyapıya sahip olması sürdürülebilirlik açısından elzem olmakla birlikte son yıllarda küresel ısınmaya bağlı olarak yaşanılan iklim değişikliği ve bunun çevresel tahribatları, özellikle kentsel alanlarda daha yoğun bir şekilde hissedilmektedir. Bu nedenle kentlerde aşırı nüfus yoğunluğunun ihtiyaçlarını karşılayabilecek sürdürülebilir yönetim anlayışlarına ihtiyaç vardır. Bu noktada hem çevreci hem de sürdürülebilir özelliklere sahip olan, ekonomik değerler ile çevresel değerler arasında bir denge kurarak kent yönetimini hedefleyen yeşil altyapı anlayışı son dönemlerde kent tasarımlarında ve halihazır kentlerin doğayla olan tezatlığının engellenmesinde yerini almıştır. Bu olgu çerçevesinde liman kenti olan İskenderun ilçesi özelinde nitel gözlemlere dayalı gerçekleştirilen çalışmada yeşil altyapı bileşenlerinden kurakçıl peyzaj, sürdürülebilir tarım, yağmursuyu yönetimi, atıksu yönetimi ve yeşil liman kavramları incelenmiş, kentin mevcut ve olası genişleme durumlarının sürdürülebilir kent yönetimi anlayışı ile gerçekleştirilmesine ışık tutulmaya çalışılmıştır.