Green synthesis of MgO nanocatalyst by using Ziziphus mauritiana leaves and seeds for biodiesel production

Author(s):  
Syed Saman ◽  
Aamna Balouch ◽  
Farah Naz Talpur ◽  
Ayaz Ali Memon ◽  
Bibi Maryam Mousavi ◽  
...  
2020 ◽  
Vol 147 ◽  
pp. 310-321 ◽  
Author(s):  
K.V. Yatish ◽  
H.S. Lalithamba ◽  
R. Suresh ◽  
H.K.E. Latha

2021 ◽  
Vol 6 (2) ◽  
pp. 60-68
Author(s):  
Primata Mardina ◽  
Hesti Wijayanti ◽  
Abubakar Tuhuloula ◽  
Erita Hijriyati ◽  
Sarifah

The utilization of an appropriate catalyst in biodiesel production depends on the free fatty acid content of vegetable oil as a feedstock. Recently, heterogeneous acid catalysts are widely chosen for biodiesel production. However, these catalysts are non-renewable, highly expensive and low stability. Due to the aforementioned drawbacks of commercial heterogeneous acid catalyst, a number of efforts have been made to develop renewable green solid acid catalysts derived from biomass. Published literature revealed that the application of the biomass derived solid acid catalysts can achieve up to 98% yield of biodiesel. This article focused on corncob as raw material in solid acid catalyst preparation for biodiesel production. The efficient preparation method and performance comparation are discussed here. The corncob derived heterogeneous acid catalysts provides an environmentally friendly and green synthesis for biodiesel production.


2021 ◽  
Vol 17 (4) ◽  
pp. 691-699
Author(s):  
Neeshat Fathima ◽  
Shaistha Afreen ◽  
Thirumavalavan Muniyan ◽  
Venkatesa Prabhu Sundramurthy ◽  
Nahom Daniel

In the area of Nano technological research, green synthesis of Nanoparticles (NPs) has pulled in a ton of interest in light of the fact that the green-synthesized Ag NPs show more prominent antimicrobial and inhibitory qualities, in perspective on which they could be utilized in various applications in the areas of medical and drug delivery. It might be the most appropriate option for the conventional techniques that are commonly conflicting and exert dangerous impacts on the earth. In this research, green synthesis of silver NPs using Ziziphus mauritiana leaf extract was carried out. The synthesized Ag NPs were characterized using UV–V is spectrophotometry, scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FTIR), and X-ray diffraction (XRD) techniques. The consequences of UV-Vis spectroscopy showed plasma resonance peaks around 413 nm, that exhibited the existence of Ag NPs. The result observedfromSEM demonstrated thatNPs werefound inspherical and in the 4–96 nm range. The practical gatherings forNPs synthesis using organic compounds with minimized procedure of biosynthesis and stabilization of silver NPs were studied with FTIR and were observed to be phenols, alcohols, primary amines, and alkenes. The XRD pattern demonstrated the FCC structure of AgNO3 and average particle was observed to be 12.0 nm.


2020 ◽  
pp. 149-159
Author(s):  
Jatinder Kataria ◽  
Saroj Kumar Mohapatra ◽  
Amit Pal

The limited fossil reserves, spiraling price and environmental impact due to usage of fossil fuels leads the world wide researchers’ interest in using alternative renewable and environment safe fuels that can meet the energy demand. Biodiesel is an emerging renewable alternative fuel to conventional diesel which can be produced from both edible and non-edible oils, animal fats, algae etc. The society is in dire need of using renewable fuels as an immediate control measure to mitigate the pollution level. In this work an attempt is made to review the requisite and access the capability of the biodiesel in improving the environmental degradation.


2016 ◽  
Vol 5 (3) ◽  
pp. 38-43
Author(s):  
Windi Monica Surbakti ◽  
Gerson Rico M.H ◽  
Mersi Suriani Sinaga

Glycerol as a byproduct of biodiesel production was approximately formed 10% of the biodiesel weight. Impurities which contained in the glycerol such as catalyst, soap, methanol, water, salt, and matter organic non glycerol (MONG) have a significant effect on the glycerol concentration. So, it is necessary to treat the impurities. The purpose of this study is to know the effect of chloroform to glycerol purification process with acidification method using hydrochloric acid as pretreatment process. This research was begun with acid addition to the glycerol to neutralize the base content and to split the soap content into free fatty acid and salt, that are more easily separated from glycerol. Then the process was continued with extraction by the solvent chloroform using the variable of test volume ratio (v/v) (1:1, 1:1.5, 1:2)  and the extraction time (20, 40, and 60 minutes). The results showed that the more volume of solvent used, gave less extraction time to produce high purity of glycerol. The highest purity produced in this study amounted to 90,9082% is obtained at the ratio of the volume solvent (v/v) 1:1 with extraction time 60 minutes.


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