Prediction and optimization of the process of generating green hydrogen by electrocatalysis: A study using response surface methodology

Özgür, Ceyla; Mert, Mehmet

doi:10.1016/j.fuel.2022.125610

Cited by 9 publications

(4 citation statements)

References 62 publications

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“…Ni köpük malzeme (NF -Sigma GF28024657-1EA) 1:1:0.16 cm boyutunda kesildi, ardından sisteme bağlamak için Ni tel ile tutturuldu. Önceki çalışmamızda belirtildiği üzere yüzey hazırlama işlemleri gerçekleştirildi [28]. Katalizörlerin elektrokimyasal çöktürme işlemleri için Iviumstat Elektrokimyasal analiz cihazı kullanıldı ve katalizör miktarı 10 mg cm -2 olacak şekilde gerçekleştirildi.…”

Section: Elektrolis Sisteminin Kurulumuunclassified

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Yanıt Yüzey Metodu Analizi: Alkali Elektroliz ile Hidrojen Gazı Üretimi

Özgür

Mert

2023

Çukurova Üniversitesi Mühendislik Fakültesi Dergisi

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Bu çalışmada alkali elektroliz hücresi ile hidrojen gazı üretimi için laboratuvar ölçekli, iki elektrotlu bir sistem kurulmuştur. Anot olarak soy metal olan platin kullanılırken, katot olarak nikel köpük elektrotlar galvanostatik yöntemle nikel-bakır-molibden (NiCuMo) ile modifiye edilmiştir. Sisteme faklı uygulama potansiyelleri (2,4 V; 2,7 V ve 3 V) uygulanmış ve farklı süreler için elde edilen hidrojen gazı hacimleri belirlenmiştir. Deneysel bulgulara göre 30 dakikalık elektroliz işlemi sonrasında artan uygulama potansiyellerine göre sırasıyla; 77,30; 90,67 ve 105,08 mL hidrojen gazı üretilmiştir. Söz konusu sistemin optimizasyonu için yanıt yüzey metodu analizi (RSM) kullanılmıştır. Sistem etkinlik analizinde elektroliz potansiyeli ve süre değişken olarak seçilerek hidrojen gazı üretim hacmine ve yük miktarına etkileri araştırılmıştır. Hidrojen hacmi ve yük miktarı için tahmini R2 değerleri sırasıyla 0,9956 ve 0,9955 olarak belirlenmiştir. Hidrojen gazı hacim ve yük değerleri için %Hata sırasıyla 2,71 ve 0,5‘dir.

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Section: Elektrolis Sisteminin Kurulumuunclassified

“…Her bir potansiyel için bürette dolan hidrojen gazı farklı süreler (10, 20 ve 30 dakika) için belirlenmiştir. Hidrojen gazı üretiminde, tüm ölçüm sonuçları buhar basıncı düzeltmesi yapılarak verilmiştir [28].…”

Section: Elektrolis Sisteminin Kurulumuunclassified

Yanıt Yüzey Metodu Analizi: Alkali Elektroliz ile Hidrojen Gazı Üretimi

Özgür

Mert

2023

Çukurova Üniversitesi Mühendislik Fakültesi Dergisi

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“…Although the production of hydrogen gas by electrolysis is an environmentally friendly approach, it still relies on the use of fossil fuels when produced using traditional electricity generation methods [40][41][42][43]. However, electricity produced using renewable sources such as solar and wind power offers a more environmentally friendly option for hydrogen gas production and has many advantages.…”

Section: Hydrogen Production and Its Contribution To The Green Economymentioning

confidence: 99%

Turkey's Green Economy Initiative: An Experimental Evaluation of Hydrogen Energy

Ekinci

Mert

2023

Çukurova Üniversitesi Mühendislik Fakültesi Dergisi

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Green economy is a concept that aims to achieve sustainable economic growth without harming the environment. Reducing carbon footprint is an important tool for the green economy. The contribution of reducing carbon footprint to the green economy is to measure the impact of economic activities on the environment and guide the development of green economy practices. Through green economy practices, carbon footprint can be reduced, environmentally friendly production and consumption habits can be promoted, and natural resources can be used more efficiently. Turkey is in a moderate position in terms of carbon footprint worldwide. As of 2019, Turkey's carbon footprint was calculated as 370 million tons of carbon dioxide (CO2) equivalent. The energy sector, industrial activities, transportation and agriculture sectors are among the largest sources of carbon footprint in Turkey. In this study, the evaluation of hydrogen gas production for reducing carbon footprint during Turkey's transition to the green economy is discussed. The production and evaluation of the cathode electrode used in hydrogen gas production with the alkaline electrolysis system were conducted. For this purpose, a novel, cheap and accessible cathode material containing transition metal was used for the first time in the literature, which was produced by a triple coating of nickel (Ni), iron (Fe), and molybdenum (Mo) on a nickel foam electrode surface at different potentials (2.1 V - 3 V) and different times (5-30 minutes) with two electrode techniques to produce hydrogen gas. According to the results, the amount of hydrogen gas produced per unit surface area (m2) of the electrode during a 30-minute period was approximately 516 L, and the energy value determined by the Lower Heating Value (LHV) was 5533.2 kJ/kg H2.

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“…Increasing a process's performance to extract the most possible value from a system, procedure, or end result is known as optimization 13 , 14 . It is evident from several researches in the literature that a wide range of parameters may effectively produce hydrogen 15 – 20 .…”

Section: Introductionmentioning

confidence: 99%

Experimental, predictive and RSM studies of H2 production using Ag-La-CaTiO3 for water-splitting under visible light

Ragab,

Elkatory,

Hassaan

et al. 2024

Sci Rep

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Ag-La-CaTiO3 was used in place of sacrificial agents to assess the influence of operational factors on hydrogen generation in a photocatalytic water splitting system. After being synthesized, the physicochemical features of this substance were accurately described. Several characterization techniques including UV–Vis spectroscopy, FTIR, XRD, XPS, EDX, SEM, TGA, DRS and BET were applied to study the prepared Ag-La-CaTiO3 photocatalyst. Ag-La-CaTiO3 shows a band in the visible wavelength between 400 and 800 nm at < 560 nm compared to the main CaTiO3 band at 350 nm. Ag 4d5s electrons transition to the conduction band (CB), which is responsible for the absorption band at ~ 560 nm (> 2.21 eV). The effects of catalyst concentration, light intensity, and beginning solution pH on the H2 generation rate may all be evaluated simultaneously using experimental design procedures. Up to a maximum threshold, where a drop in the rate of gas evolution occurs, it was confirmed that the increase in catalyst dose positively affects system productivity. The initial solution pH plays a crucial role in H2 production, and pH = 4 and 10 are the optimum pH with a higher yield of H2 production. The highest total H2 production rate, 6246.09 μmol, was obtained using a catalyst concentration of 700 mg and solution pH equal to 10 under 1200 W Vis lamp for 3 h. For prediction and optimization, a D-Optimal design was applied and the optimal results were pH 4, the catalyst dose of 645.578 mg and 1200 W with H2 production of 6031.11 μmol.

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Prediction and optimization of the process of generating green hydrogen by electrocatalysis: A study using response surface methodology

Cited by 9 publications

References 62 publications

Yanıt Yüzey Metodu Analizi: Alkali Elektroliz ile Hidrojen Gazı Üretimi

Yanıt Yüzey Metodu Analizi: Alkali Elektroliz ile Hidrojen Gazı Üretimi

Turkey's Green Economy Initiative: An Experimental Evaluation of Hydrogen Energy

Experimental, predictive and RSM studies of H2 production using Ag-La-CaTiO3 for water-splitting under visible light

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