Reusability and regeneration of solid catalysts used in ultrasound assisted biodiesel production

Korkut, Ibrahim; Ergan, Başak Temur

doi:10.3906/kim-2008-33

Cited by 15 publications

(3 citation statements)

References 17 publications

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“…Although there are several mechanisms behind this phenomena: Toxicity (Chemisorption of contaminants or by-products on active sites), fouling (carbonation or coke deposition), and/or degradation (chemical, physical or mechanical) Bartholomew, 2003. The regeneration techniques for spent FCC catalysts may be divided between two groups [11] . In the first group, following filtering, the catalyst is regenerated by washing and drying it at temperatures typically below 200 degrees Celsius.…”

Section: An Overview Of Fcc Spent Catalyst Regenerationmentioning

confidence: 99%

Regeneration method for spent FCC catalysts: Brief Review

Anggoro,

Buchori,

Putra

et al. 2023

J. Res. Chem.

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Throughout refinement, catalysts are switched off in commercial catalytic processes. When they are not tuned, catalysts become dangerous. Deactivation catalyst is mostly wasted FCC catalyst as a result of heavy metal coke, poison, and sintering. Regenerating a deactivated catalyst could eliminate the metals while resurrecting the very desirable catalytic activity. While there are a few a variety of physical, chemical, and thermal treatment methods for removing metals, it is still difficult to discover reliable, effective, and cost-effective regeneration strategies for catalytic processes in commercial application. In addition, the effect of relevant reaction parameters on the route for regenerating utilized catalyst was investigated, and suggestions were made for the future of this research. This brief review offers an important evaluation of the material recently made publicly available on the reuse of used FCC catalyst by oxidation, gasification, and chemical processes, could potentially provide some insight into the development and improvement of catalysts as well as associated processes.

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Section: An Overview Of Fcc Spent Catalyst Regenerationmentioning

confidence: 99%

Regeneration method for spent FCC catalysts: Brief Review

Anggoro,

Buchori,

Putra

et al. 2023

J. Res. Chem.

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“…Not only with using ultrasound but also ultrasound combined with stirring, the reaction time was drastically reduced by 10 h [ 58 ]. The ultrasonic-assisted process leads to cavitation bubbles collapse between phase borderline from two immiscible solutions so that both layers can be mixed efficiently, the mass transfer limitations reduce, and the reaction rate increases [ 107 , 110 – 112 ]. Lee et al performed enzymatic GlyC production with silica gel-coated Gly and DMC by Novozym 435.…”

Section: Factors Influencing Enzymatic Transesterification Reaction I...mentioning

confidence: 99%

A review on the achievement of enzymatic glycerol carbonate production

AYDOĞDU¹,

KAPUCU²

2022

Turkish Journal of Chemistry

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High energy demand driven by decreasing fossil fuels, and global warming because of the burning of fossil fuels necessitates the utilization of renewable and clean energy. One of these renewable energy sources is biodiesel. The increasing trend of biodiesel over the last 20 years tends to result in increasing glycerol (Gly), which is produced during the biodiesel production in 10% ratio (w/w) as a by-product. Using Gly as raw material is an alternative way to produce bio-based new products such as glycerol carbonate (GlyC). GlyC is a value-added product of Gly/vegetable oil and this product can be used as a potential fuel additive in the future because of its high oxygen content. Furthermore, GlyC shows a high reactivity; therefore, it is a bio-based building block for complex chemicals. The present review gives information about the bio-catalytic synthesis of GlyC from Gly/vegetable oil and, dimethyl carbonate (DMC). In addition, the influencing parameters of this bio-catalytic GlyC synthesis are discussed and reviewed in this paper.

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“…Literatürde ultrasonik banyo destekli biyodizel üretimi ile ilgili çalışmalar mevcuttur [32][33][34][35][36]. Kentish vd.…”

Section: Giriş (Introduction)unclassified

Fındık yağından elde edilen biyodizelin karakteristik özelliklerine ultrasonik banyo uygulamasının etkilerinin araştırılması

Şimşek

2024

Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi

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Bu çalışmada bitkisel kökenli fındık yağına baz katalizle transesterifikasyon işlemi uygulanarak, gliserinle biyodizelin ayrışması sağlanmıştır. Çalışmada üretilen biyodizele, saflaştırılmak ve reaksiyon verimini artırmak amacıyla ultrasonik banyo muamelesi gerçekleştirilmiştir. Elde edilen biyodizel numunelerine farklı sürelerde ultrasonikasyon uygulanarak, biyodizelin yapısında meydana gelen kimyasal değişikliklerin, fiziksel özelliklere etkisi araştırılmıştır. Öncelikle, serbest yağ asitliği tespit edildikten sonra rafine fındık yağı, NaOH katalizörlüğünde 55°C'de metil alkol ile transesterifikasyon reaksiyonu gerçekleştirilmiştir. Akabinde, biyodizel örneklerine belirli sürelerde ultrasonik banyo işlemi uygulanarak biyodizelin yapısına ve karakteristik özelliklerine etkisi test edilmiştir. Sonuç olarak, ultrasonik banyo işlemi görmüş fındık yağı biyodizel numunelerinin FTIR analizleri, sonikasyon uygulama süresinin transesterifikasyonu doğrudan etkilediğini göstermiş, düşük uygulama sürelerinde reaksiyon verimi artarken yüksek uygulama sürelerinden biyodizel veriminin düştüğü belirlenmiştir. Bu yöntem, biyodizel eldesinde en önemli sorun olan uzun yağ zincirlerinin kısaltılmasında kimyasal yöntemler kadar iyi bir etki göstermiştir. Yöntemin yüksek verim ile daha kısa zincirli yağ asidi-metil esterlerinin oluşumunu sağladığı ve yardımcı kimyasalların uzaklaştırılması adımını içermemesi nedeniyle hızlı ve yüksek uygulama potansiyeline sahip olduğu görülmüştür.

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Reusability and regeneration of solid catalysts used in ultrasound assisted biodiesel production

Cited by 15 publications

References 17 publications

Regeneration method for spent FCC catalysts: Brief Review

Regeneration method for spent FCC catalysts: Brief Review

A review on the achievement of enzymatic glycerol carbonate production

Fındık yağından elde edilen biyodizelin karakteristik özelliklerine ultrasonik banyo uygulamasının etkilerinin araştırılması

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