Refining of biodiesel by ceramic membrane separation

Yong, Wang; Wang, Xingguo; Liu, Yuanfa; Ou, Shiyi; Tan, Yanlai; Tang, Shuze

doi:10.1016/j.fuproc.2008.11.004

Cited by 152 publications

(84 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…glycerol and soap are dependent on the cation in question (Wang et al, 2009). In a study by Wang et al (2009), the authors were able to decrease the potassium and magnesium content of the permeate flow by decreasing the pore size from 0.6 to 0.1 µm, decreasing potassium and magnesium by 60% and 40%, respectively. Sodium and calcium retention was unaffected by this decrease -leading the authors to conclude: "no trend of retention of cation with pore size was observed in this work" ).…”

Section: Inorganic/ceramic Membranesmentioning

confidence: 99%

A comprehensive review on biodiesel purification and upgrading

2017

View full text Add to dashboard Cite

HIGHLIGHTS Various biodiesel purification methods, i.e., equilibrium-based, affinity-based, and reaction-based separation techniques along with membrane technology and solid-liquid separation processes were reviewed.Deoxygenating process via hydrodeoxygenation and decarboxylation/decarbonylation pathways is a common way to upgrade bio-based oils to produce biorenewable diesel with excellent fuel properties. Catalysts and operating conditions, i.e., pressure, temperature, and contact time, are the most important variables in biodiesel upgrading discussed herein. Serious environmental concerns regarding the use of fossil-based fuels have raised awareness regarding the necessity of alternative clean fuels and energy carriers. Biodiesel is considered a clean, biodegradable, and non-toxic diesel substitute produced via the transesterification of triglycerides with an alcohol in the presence of a proper catalyst. After initial separation of the by-product (glycerol), the crude biodiesel needs to be purified to meet the standard specifications prior to marketing. The presence of impurities in the biodiesel not only significantly affects its engine performance but also complicates its handling and storage. Therefore, biodiesel purification is an essential step prior to marketing. Biodiesel purification methods can be classified based on the nature of the process into equilibrium-based, affinity-based, membrane-based, reaction-based, and solid-liquid separation processes. The main adverse properties of biodiesel -namely moisture absorption, corrosiveness, and high viscosity -primarily arise from the presence of oxygen. To address these issues, several upgrading techniques have been proposed, among which catalytic (hydro)deoxygenation using conventional hydrotreating catalysts, supported metallic materials, and most recently transition metals in various forms appear promising. Nevertheless, catalyst deactivation (via coking) and/or inadequacy of product yields necessitate further research. This paper provides a comprehensive overview on the techniques and methods used for biodiesel purification and upgrading. ABSTRACT

show abstract

Section: Inorganic/ceramic Membranesmentioning

confidence: 99%

A comprehensive review on biodiesel purification and upgrading

2017

View full text Add to dashboard Cite

show abstract

“…The membrane successfully separated unreacted oils, thus generating a high purity biodiesel and shifting the equilibrium towards products. Wang et al [9] further used ceramic membrane for biodiesel purification, where membrane good properties were shown, including solvent resistance, high temperature resistance, high mechanical strength and easy making. However, ceramic has disadvantages like brittleness, expensive production cost due to energy consumption and needing of high temperature for its production [2].…”

Section: Introductionmentioning

confidence: 99%

Application of Glutaraldehyde-Crosslinked Chitosan Membranes from Shrimp Shellwaste on Production of Biodiesel from Calophyllum Inophyllum Oil

Wafiroh¹,

Wathoniyyah²,

Abdulloh³

et al. 2017

ChChT

View full text Add to dashboard Cite

Abstract. 1 The purification of biodiesel was performed using glutaraldehyde-crosslinked chitosan membrane to improve the quality and to reduce the cost of biodiesel production. Biodiesel was obtained by acid-based catalyzed transesterification of Calophyllum inophyllum oil. The results of this experiment showed that the amount of glycerol in biodiesel before the process is 0.3014±0.05 %. After the purification process performed for 1 h, the glycerol content in biodiesel has been reduced to 0.1429±0.09 %.

show abstract

“…Focusing on biodiesel purification, water washing is generally conducted although some "dry washing" methods have been proposed [8][9][10]. Water washing is used mostly to remove impurities such as the remaining methanol and glycerol, as well as soaps and remaining catalyst [11].…”

Section: Introductionmentioning

confidence: 99%

“…Ceramic membranes have high potential to be used in separation processes of this nature (presence of soaps and alcohols) due to their excellent thermal, chemical and physical stability [8,13,14]. Therefore, the ceramic membranes might be effective for biodiesel purification, by removing glycerol from the FAME produced [11,14,15] or by retaining the un-reacted triglycerides [13] or soaps [8].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Water-free process for eco-friendly purification of biodiesel obtained using a heterogeneous Ca-based catalyst

Ferrero

Almeida

Alvim-Ferraz

et al. 2014

Fuel Processing Technology

View full text Add to dashboard Cite

The technologies conventional used for biodiesel purification imply high consumptions of both energy and water. In the present work, biodiesel was produced by transesterification using a very active calcium glyceroxide catalyst and after purified using water-free processes. The study focused on soaps removal that was the main product impurity. The best results were obtained when the crude biodiesel (methyl ester content of 90.2-91.2 wt.% and calcium content of 372 -393 ppm) was pre-treated with Na2CO3 and after treated by an ion-exchange resin (6 wt.%) or a ceramic membrane (0.1 μm). The purification was effective using biodiesel produced from both soybean oil and waste frying oil and the quality of the product agreed with the one obtained using the conventional water washing process. The effectiveness of the treatment could be explained by calcium elimination through precipitation as CaCO3 during pre-treatment and sodium soaps removal by absorption into the resin or filtration by the ceramic membrane, according to the micelle formation mechanism. The studied process presents a high potential to remove calcium soaps from biodiesel.

show abstract

Refining of biodiesel by ceramic membrane separation

Cited by 152 publications

References 17 publications

A comprehensive review on biodiesel purification and upgrading

A comprehensive review on biodiesel purification and upgrading

Application of Glutaraldehyde-Crosslinked Chitosan Membranes from Shrimp Shellwaste on Production of Biodiesel from Calophyllum Inophyllum Oil

Water-free process for eco-friendly purification of biodiesel obtained using a heterogeneous Ca-based catalyst

Contact Info

Product

Resources

About