Efficient production of biodiesel from high free fatty acid-containing waste oils using various carbohydrate-derived solid acid catalysts

Lou, Wen‐Yong; Zong, Min‐Hua; Duan, Zhiguang

doi:10.1016/j.biortech.2008.04.038

Cited by 348 publications

(227 citation statements)

References 31 publications

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“…CaO and MgO solid based catalysts from natural resources or not, in most cases (Tables 2-4 [93] showed excellent stability as it gives good yields in transesterification and could be reused during 50 cycles in successive reactions. Yan et al [94] reported that the Zn 3 La 1 catalyst they prepared was recycled 17 times in a batch reactor without loss of activity and maintained a high FAME yield (92.3%) for 70 days in a continuous tubular flow reactor.…”

Section: Discussionmentioning

confidence: 99%

Deactivation Processes, Regeneration Conditions and Reusability Performance of CaO or MgO Based Catalysts Used for Biodiesel Production—A Review

Oueda¹,

Bonzi-Coulibaly²,

Ouédraogo³

2017

MSA

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The activity of a catalyst in transestrification reaction usually declines with repeated uses and this limits the possibility to use it many times. This paper presents a review of various techniques used to evaluate the activity changes, the recycling processes for calcium and magnesium oxides based heterogeneous catalysts for biodiesel production. The activity of calcium and magnesium oxides based catalysts declines due to leaching, surface or active sites poisoning by reactant or product molecules and modification of physical aspects. Physico-chemical methods (AAS, BET, CO 2 -TPD, EDS, FTIR, ICP-AES, SEM, TG/DTA and XRD) were used to check the catalyst modification and to confirm the deactivation. When separated from the reaction mixture by filtration, the catalyst could be reused without any treatment or recycled by washing, drying or/and recalcination. Between various recycling processes for calcium and magnesium oxides based catalysts, mixed oxides showed less leaching and performed FAME or FAEE yield >90% with reusability.

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Section: Discussionmentioning

confidence: 99%

Deactivation Processes, Regeneration Conditions and Reusability Performance of CaO or MgO Based Catalysts Used for Biodiesel Production—A Review

Oueda¹,

Bonzi-Coulibaly²,

Ouédraogo³

2017

MSA

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“…In a preceding study by the same authors, carbohydrate-derived catalysts have been prepared from various carbohydrates such as D-glucose, sucrose, cellulose and starch. They found that the starch-derived catalyst had the best catalytic performance (Lou et al, 2008). The carbohydratederived catalysts exhibited substantially higher catalytic activities for both esterification and transesterification compared to the two typical solid acid catalysts (sulphated zirconia and Niobic acid) and gave markedly enhanced yield of methyl esters in converting waste cooking oils containing 27.8 wt % high free fatty acids (FFAs) to biodiesel.…”

Section: Ion-exchange Resins and Immobilized Sulfonic Acidsmentioning

confidence: 99%

Different techniques for the production of biodiesel from waste vegetable oil

Refaat

2009

Int. J. Environ. Sci. Technol.

280

118

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ABSTRACT:The production of biodiesel from waste vegetable oil offers a triple-facet solution: economic, environmental and waste management. The new process technologies developed during the last years made it possible to produce biodiesel from recycled frying oils comparable in quality to that of virgin vegetable oil biodiesel with an added attractive advantage of being lower in price. Thus, biodiesel produced from recycled frying oils has the same possibilities to be utilized. While transesterification is well-established and becoming increasingly important, there remains considerable inefficiencies in existing transesterification processes. There is an imperative need to improve the existing biodiesel production methods from both economic and environmental viewpoints and to investigate alternative and innovative production processes. This study highlights the main changes occurring in the oil during frying in order to identify the characteristics of oil after frying and the anticipated effects of the products formed in the frying process on biodiesel quality and attempts to review the different techniques used in the production of biodiesel from recycled oils, stressing the advantages and limitations of each technique and the optimization conditions for each process. The emerging technologies which can be utilized in this field are also investigated. The quality of biodiesel produced from waste vegetable oil in previous studies is also reviewed and the performance of engines fueled with this biodiesel and the characteristics of the exhaust emissions resulting from it are highlighted. The overarching goal is to stimulate further activities in the field.

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“…The results showed that a longer acid treatment time reduced the surface area and the total acid site density. The 3 min SGAC exhibited larger surface area and acid site density than previous sulfonated carbohydrate derived catalyst (Lou et al 2008). Previous study had already proven that all S atoms in sulfonated catalyst is presented as -SO 3 H groups .…”

Section: Analysis Of Biodieselmentioning

confidence: 74%

Production of Biodiesel from Palm Fatty Acid Distillate by Microwave-Assisted Sulfonated Glucose Acid Catalyst

Saimon¹,

Heng²,

Johari³

et al. 2018

JSM

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Efficient production of biodiesel from high free fatty acid-containing waste oils using various carbohydrate-derived solid acid catalysts

Cited by 348 publications

References 31 publications

Deactivation Processes, Regeneration Conditions and Reusability Performance of CaO or MgO Based Catalysts Used for Biodiesel Production—A Review

Deactivation Processes, Regeneration Conditions and Reusability Performance of CaO or MgO Based Catalysts Used for Biodiesel Production—A Review

Different techniques for the production of biodiesel from waste vegetable oil

Production of Biodiesel from Palm Fatty Acid Distillate by Microwave-Assisted Sulfonated Glucose Acid Catalyst

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