Profitable exploitation of biodegradable polymer including chitosan blended potato peels’ starch waste as an alternative source of petroleum plastics

Author(s):  
Tarek H. Taha ◽  
M. A. Abu-Saied ◽  
Mohamed Elnouby ◽  
Mohamed Hashem ◽  
Saad Alamri ◽  
...  
Jurnal Kimia ◽  
2016 ◽  
Author(s):  
Devi Esteria Hasianna Purba ◽  
Iryanti Eka Suprihatin ◽  
A.A.I.A. Mayun Laksmiwati

Ethanol fermented from potato peels is proposed as one alternative source of renewable energy called bioethanol. In this research bioethanol was produced through four stages namely acid hydrolysis, detoxification, fermentation and distillation. The acid hydrolysis process was carried out using sulphuric acid at 100oC for 60 minutes. The detoxification process was carried out by adding NH4OH into the hydrolyzate prior to fermentation. Distillation was performed up to 100oC and the distillate with the BP of 78-84oC was determined for its ethanol content using gas chromatography. The ethanol produced from 5 grams of dried potato peels through fermentation for 4, 5, 6, and 7 days 3.54%; 4,85%; 5,35%; and 6.15% respectively.


Planta Medica ◽  
2012 ◽  
Vol 78 (11) ◽  
Author(s):  
A Wiater ◽  
K Próchniak ◽  
M Janczarek ◽  
M Pleszczyńska ◽  
M Tomczyk ◽  
...  

2019 ◽  
Vol 2 (1) ◽  
pp. 59-64
Author(s):  
Vincentius Vincentius ◽  
Evita H. Legowo ◽  
Irvan S. Kartawiria

Natural gas is a source of energy that comes from the earth which is depleting every day, an alternative source of energy is needed and one of the sources comes from biogas. There is an abundance of empty fruit bunch (EFB) that comes from palm oil plantation that can become a substrate for biogas production. A methodology of fermentation based on Verein Deutscher Ingenieure was used to utilize EFB as a substrate to produce biogas using biogas sludge and wastewater sludge as inoculum in wet fermentation process under mesophilic condition. Another optimization was done by adding a different water ratio to the inoculum mixture. In 20 days, an average of 6gr from 150gr of total EFB used in each sample was consumed by the microbes. The best result from 20 days of experiment with both biogas sludge and wastewater sludge as inoculum were the one added with 150gr of water that produced 2910ml and 2185ml of gas respectively. The highest CH 4 produced achieved from biogas sludge and wastewater sludge with an addition of 150gr of water to the inoculum were 27% and 22% CH 4 respectively. This shows that biogas sludge is better in term of volume of gas that is produced and CH percentage.


2014 ◽  
Vol 1 (5) ◽  
pp. 8 ◽  
Author(s):  
Farooq Ahmad Ganiee

The Rural development generally refers to the process of improving the quality of life and economic welfare of people living in relatively isolated and sparsely populated areas. Mahatma Gandhi National Rural Employment Guarantee Act (MGNREGA) is considered as a “Silver Bullet” for eradicating rural poverty and unemployment, by way of generating demand for productive labour force in villages. It provides an alternative source of livelihood which will have an impact on reducing migration, restricting child labour, alleviating poverty, and making villages self-sustaining through productive assets creation such as road construction, cleaning up of water tanks, soil and water conservation work, etc. For which it has been considered as the largest anti-poverty programme in India. In this paper, based on the secondary data, an attempt has been made to comprehensively understand the development effort to rebuild the rural life and livelihood on the basis of various secondary data. 


2020 ◽  
Vol 14 (2) ◽  
pp. 15
Author(s):  
Zaidah Zainal ariffin

Fungi is known to produce a wide range of biologically active metabolites and enzymes. Enzymes produced by fungi are utilized in food and pharmaceutical industries because of their rich enzymatic profile. Filamentous fungi are particularly interesting due to their high production of extracellular enzymes which has a large industrial potential. The aim of this study is to isolate potential soil fungi species that are able to produce functional enzymes for industries. Five Aspergillus species were successfully isolated from antibiotic overexposed soil (GPS coordinate of N3.093219 E101.40269) by standard microbiological method. The isolated fungi were identified via morphological observations and molecular tools; polymerase chain reactions, ITS 1 (5’- TCC GTA GGT GAA CCT GCG G3’) forward primer and ITS 4 (5’-TCC TCC GCT TAT TGA TAT GC-3’) reverse primer. The isolated fungi were identified as Aspergillus sydowii strain SCAU066, Aspergillus tamarii isolate TN-7, Aspergillus candidus strain KUFA 0062, Aspergillus versicolor isolate BAB-6580, and Aspergillus protuberus strain KAS 6024. Supernatant obtained via submerged fermentation of the isolated fungi in potato dextrose broth (PDB) and extracted via centrifugation was loaded onto specific media to screen for the production of xylanolytic, cellulolytic and amylolytic enzymes. The present findings indicate that Aspergillus sydowii strain SCAU066 and Aspergillus versicolor isolate BAB-6580 have great potential as an alternative source of xylanolytic, cellulolytic and amylolytic enzymes.


2019 ◽  
Vol 7 (1) ◽  
Author(s):  
Mir Kamruzzman Chowdhary

This study was an attempt to understand how the available alternative source materials, such as oral testimonies can serve as valuable assets to unveiling certain aspects of maritime history in India. A number of themes in maritime history in India failed to get the attention of the generation of historians, because of the paucity of written documents. Unlike in Europe, the penning down of shipping activities was not a concern for the authorities at the port in India. The pamphlets and newsletters declared the scheduled departure of the ship in Europe but, in India, this was done verbally. Therefore, maritime history in India remained marginalised. Hence, in this article, I make an endeavour to perceive how the oral testimonies can help shed some new light on certain aspects of maritime history in India, such as life on the ship, maritime practices, and perceptions among the littoral people in coastal societies. This article also outlines an approach on how the broader question on the transformation of scattered maritime practices among coastal societies can be adapted and transferred into an organised institution of law by the nineteenth century, and how these can be pursued in future. I also suggest in this article that the role of Europeans, especially the British, in the process of transformation, can be investigated further through oral testimonies in corroboration with the colonial archival records.


2018 ◽  
Vol 57 (2) ◽  
pp. 121-143
Author(s):  
Nasim Shah Shirazi ◽  
Sajid Amin Javed ◽  
Dawood Ashraf

This paper investigates the impact of remittance inflows on economic growth and poverty reduction for seven African countries using annual data from 1992-2010. By using the depth of hunger as a proxy for poverty in a Simultaneous Equation Model (SEM), we find that remittances have statistically significant growth enhancing and poverty reducing impact. Drawing on our estimates, we conclude that financial development level significantly increases the remittances inflows and strengthens poverty alleviating impact of remittances. Results of our study further show a signficant interactive imapct of remittances and finacial develpment on economic growth, suggesting the substitutability between remittance inflows and financial development. We further find that 3 percentage point increase in credit provision to the private sector (financial development) can help eliminate the severe depth of hunger in the region. Remittances, serving an alternative source of private credit, can be effective in this regard. Keywords: Remittance Inflow, Poverty Alleviation, Financial Development, Simultaneous Equation Model


2019 ◽  
Author(s):  
Chem Int

The removal of Cd(II) and Pb(II) ions from aqueous medium was studied using potato peels biomass. The adsorption process was evaluated using Atomic Absorption Spectrophotometer (AAS). The Vibrational band of the potato peels was studied using Fourier Transform Infrared Spectroscopy (FTIR). The adsorption process was carried out with respect to concentration, time, pH, particle size and the thermodynamic evaluation of the process was carried at temperatures of 30, 40, 50 and 60(0C), respectively. The FTIR studies revealed that the potato peels was composed of –OH, -NH, –C=N, –C=C and –C-O-C functional groups. The optimum removal was obtained at pH 8 and contact time of 20 min. The adsorption process followed Freundlich adsorption and pseudo second-order kinetic models with correlation coefficients (R2) greater than 0.900. The equilibrium adsorption capacity showed that Pb(II) ion was more adsorbed on the surface of the potato peels biomass versus Cd (II) ion (200.91 mg/g > 125.00 mg/g). The thermodynamic studies indicated endothermic, dissociative mechanism and spontaneous adsorption process. This study shows that sweet potato peels is useful as a low-cost adsorbent for the removal of Cd(II) and Pb(II) ions from aqueous medium.


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