Production of biodiesel from mixed waste vegetable oil using an aluminium hydrogen sulphate as a heterogeneous acid catalyst

Kasirajan, Ramachandran; Pandian, Sivakumar; Suganya, Tamilarasan; Renganathan, S.

doi:10.1016/j.biortech.2011.04.100

Cited by 84 publications

(27 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…However, with further increase in the reaction time, the biodiesel production yield remains almost constant as a result of near equilibrium conditions. These results agree with Liu et al, [26], Ramachandran et al, [36] and M. Su et al, [37]. Trans-esterification reaction is carried out efficiently after 30 min and there are no remarkable difference of biodiesel yield in the reaction time in the range from 30 to 180 min is recorded.…”

Section: Scanning Electron Microscope (Sem)supporting

confidence: 91%

See 1 more Smart Citation

Preparation and Characterization of CaSO4–SiO2–CaO/SO42- Composite for Biodiesel Production

Ali¹

2015

AJAC

View full text Add to dashboard Cite

Abstract:Biodiesel synthesis from waste frying oil (WFO), gained a huge industrial concern compared to the high priced virgin vegetable oils. The major catalysts used in biodiesel production are homogeneous catalysts, which are cheap. However, they have many drawbacks such as, serious separation problems, low biodiesel production yield and production of impure glycerol. This will lead to increase the produced biodiesel price. The latest trend in biodiesel production today is using heterogeneous catalysts that can address the homogeneous catalysts drawbacks. CaSO 4 -SiO 2 -CaO/SO 4 2-composites with various SiO 2 to CaO weight ratios were synthesized, characterized by XRD, SEM, EDX, and FTIR. In addition, the prepared composites were used for biodiesel production and for determining the optimum operating conditions using gas chromatograph (GC). The obtained results clearly indicate that CaSO 4 -SiO 2 -CaO/SO 4 2-can be used as stable and active catalyst for biodiesel production from WFO.

show abstract

Section: Scanning Electron Microscope (Sem)supporting

confidence: 91%

“…Hence, increasing the dosage of catalyst in the reaction mixture will have an insignificant effect on the biodiesel production yield [34]. These results agreed with Kondamudi et al, 2011 [28], Ramachandran et al, [36]. …”

Section: Effect Of Catalyst Loadingsupporting

confidence: 85%

Preparation and Characterization of CaSO4–SiO2–CaO/SO42- Composite for Biodiesel Production

Ali¹

2015

AJAC

View full text Add to dashboard Cite

show abstract

“…The synthetic procedure was adapted from the literature with slight modifications [24, 25]. To a solution of 4-chloro-2-methylphenol (0.3 g, 2.2 mmol) in CH 2 Cl 2 (30 mL), NaNO 2 (0.3 g, 4.0 mmol), Al(HSO 4 ) 3 (0.4 g, 1.4 mmol), and wet SiO 2 (50% w/w) (0.44 g) were added.…”

Section: Methodsmentioning

confidence: 99%

Effects of Chlorophenoxy Herbicides and Their Main Transformation Products on DNA Damage and Acetylcholinesterase Activity

Benfeito

Silva

Garrido

et al. 2014

BioMed Research International

View full text Add to dashboard Cite

Persistent pesticide transformation products (TPs) are increasingly being detected among different environmental compartments, including groundwater and surface water. However, there is no sufficient experimental data on their toxicological potential to assess the risk associated with TPs, even if their occurrence is known. In this study, the interaction of chlorophenoxy herbicides (MCPA, mecoprop, 2,4-D and dichlorprop) and their main transformation products with calf thymus DNA by UV-visible absorption spectroscopy has been assessed. Additionally, the toxicity of the chlorophenoxy herbicides and TPs was also assessed evaluating the inhibition of acetylcholinesterase activity. On the basis of the results found, it seems that AChE is not the main target of chlorophenoxy herbicides and their TPs. However, the results found showed that the transformation products displayed a higher inhibitory activity when compared with the parent herbicides. The results obtained in the DNA interaction studies showed, in general, a slight effect on the stability of the double helix. However, the data found for 4-chloro-2-methyl-6-nitrophenol suggest that this transformation product can interact with DNA through a noncovalent mode.

show abstract

“…Thec atalytic activitya nd stability of calcium-based solid bases are closely related to their high basic site density (surface O 2À )a nd hygroscopicity. [30] Fors urface O 2À absorbs water easily,i ng eneral, solid base catalysts absorb water coming from the air easily.T he stronger the hygroscopicity of the catalyst, generally the weaker the stability is of the catalyst. This will lead to catalyst deactivation and al ow biodiesel yield.…”

Section: Hygroscopicity and Lipophilicity Analysismentioning

confidence: 99%

Enhanced Catalytic Activity for Biodiesel Synthesis using an Acid‐Tolerant Calcium/Magnesium/Aluminum‐Oxide Hybrid with Improved Hydrophobicity and Dispersibility

2015

View full text Add to dashboard Cite

To increase the activity of the CaOc atalyst for biodiesel synthesis,C aO-MgO-Al 2 O 3 was prepared by coprecipitation. CaO,C aO-MgO,a nd CaO-MgO-Al 2 O 3 were investigated with regard to their dispersibility,h ydrophobicity,a nd thermal stability.T he additions of MgO and Al 2 O 3 had ab eneficial effect on the activityo ft he resultingC aO-MgO-Al 2 O 3 catalyst, showing ab iodiesel yield of 97.7 %b ecause of the improvements in dispersibility and hydrophobicity.C aOMgO-Al 2 O 3 gave better acid resistance and better reusability,w hich is importantf or potential application in biodiesel production.

show abstract

Production of biodiesel from mixed waste vegetable oil using an aluminium hydrogen sulphate as a heterogeneous acid catalyst

Cited by 84 publications

References 23 publications

Preparation and Characterization of CaSO4–SiO2–CaO/SO42- Composite for Biodiesel Production

Preparation and Characterization of CaSO4–SiO2–CaO/SO42- Composite for Biodiesel Production

Effects of Chlorophenoxy Herbicides and Their Main Transformation Products on DNA Damage and Acetylcholinesterase Activity

Enhanced Catalytic Activity for Biodiesel Synthesis using an Acid‐Tolerant Calcium/Magnesium/Aluminum‐Oxide Hybrid with Improved Hydrophobicity and Dispersibility

Contact Info

Product

Resources

About