Leather Waste: New Source of Renewable Energy and Sustainable Chemicals

2021 ◽  
Author(s):  
Joana D'Arc Felix de Sousa
Keyword(s):  
Renewable Energy ◽  
Leather Waste

scholarly journals Produksi Bioetanol Dari Limbah Kulit Kopi Menggunakan Enzim Zymomonas Mobilis Dan Saccharomyces Cereviseae

2018 ◽  
Vol 3 (1) ◽  
Author(s):  
Saisa . ◽  
Maliya Syabriana
Keyword(s):  
Renewable Energy ◽  
Zymomonas Mobilis ◽  
Environmentally Friendly ◽  
Fiber Content ◽  
Coffee Production ◽  
Fermentation Time ◽  
Ethanol Content ◽  
Coffee Beans ◽  
Enzyme Combination ◽  
Leather Waste

The availability of coffee leather waste is quite large in Aceh, because coffee processing will produce 65% coffee beans and 35% of coffee leather waste, while coffee production in Central Aceh in 2013 reaches a total of 26 thousand tons. Coffee skin waste has fiber content of 65.2%. The purpose of this study is expected to create a new source of renewable energy that is environmentally friendly and can overcome the scarcity of fuel. The process of making bioethanol is done by hydrolyzing the waste of coffee skin into glucose using HCl catalyst. Furthermore, glucose is fermented into bioethanol using Saccharomyces cereviseae and Zymomonas Mobilis bacteria. The variables performed were fermentation time of 5, 7 and 9 days, starter concentration 5%, 10% and 15% and ratio of enzyme combination of Saccharomyces cereviseae and Zymomonas mobilis (1: 2, 1: 1, 2: 1). This study is expected to find the best yield and ethanol content when compared with no enzyme combination

Renewable Energy Sources

IEE Review ◽  
1991 ◽  
Vol 37 (4) ◽  
pp. 152
Author(s):  
Kenneth Spring
Keyword(s):  
Renewable Energy ◽  
Renewable Energy Sources ◽  
Energy Sources

Renewable energy

2000 ◽  
Vol 14 (5) ◽  
pp. 244-244
Keyword(s):  
Renewable Energy

On Energy Status indicators and the role of renewableEnergy under Economic Crisis

2014 ◽  
pp. 92-105
Author(s):  
P. Bezrukikh ◽  
P. Bezrukikh (Jr.)
Keyword(s):  
Renewable Energy ◽  
World Economy ◽  
Electrical Energy ◽  
Primary Energy ◽  
Primary Energy Consumption ◽  
Energy Status ◽  
Economy Growth ◽  
The World ◽  
Production Regime

The article analyzes the dynamics of consumption of primary energy and production of electrical energy in the world for 1973-2012 and the volume of renewable energy. It is shown that in the crisis year of 20 0 9 there was a significant reduction in primary energy consumption and production of electrical energy. At the same time, renewable energy has developed rapidly, well above the rate of the world economy growth. The development of renewable energy is one of the most effective ways out of the crisis, taking into account its production regime, energy, environmental, social and economic efficiency. The forecast for the development of renewable energy for the period up to 2020, compiled by the IEA, is analyzed. It is shown that its assessment rates are conservative; the authors justify higher rates of development of renewable energy.

Overcoming stereotypes of renewable energy

2019 ◽  
pp. 124-136
Author(s):  
Victor D. Gazman
Keyword(s):  
Renewable Energy ◽  
Empirical Analysis ◽  
Energy Generation ◽  
New Paradigm ◽  
Financial Instrument ◽  
Promising Direction ◽  
Investment Projects ◽  
Power Stations ◽  
New Generation ◽  
The Impact

The article considers prerequisites for the formation of a new paradigm in the energy sector. The factors that may affect the imminent change of leadership among the energy generation are analyzed. The variability of the projects of creation and functioning of power stations is examined. The focus is made on problematic aspects of the new generation, especially, storage and supply of energy, achieving a system of parity that ensures balance in pricing generations. The author substantiates the principles of forming system of parities arising when comparing traditional and new generations. The article presents the results of an empirical analysis of the 215 projects for the construction of facilities for renewable energy. The significance and direction of the impact of these factors on the growth in investment volumes of transactions are determined. The author considers leasing as an effective financial instrument for overcoming stereotypes of renewable energy and as a promising direction for accelerated implementation of investment projects.

Power Projects and Covid-19: A Practical Analysis of the Relevance of Force Majeure Clauses under the Standardised Power Purchase and Implementation Agreements of Uganda

2020 ◽  
Vol 1 (2) ◽  
pp. 189-193
Author(s):  
Aisha Naiga ◽  
Loyola Rwabose Karobwa
Keyword(s):  
Renewable Energy ◽  
Renewable Energy Sources ◽  
Clean Energy ◽  
The State ◽  
Energy Sources ◽  
Policy Goals ◽  
Force Majeure ◽  
Practical Analysis ◽  
Energy Justice

Over 90% of Uganda's power is generated from renewable sources. Standardised Implementation Agreements and Power Purchase Agreements create a long-term relationship between Generating Companies and the state-owned off-taker guaranteed by Government. The COVID-19 pandemic and measures to curb the spread of the virus have triggered the scrutiny and application of force majeure (FM) clauses in these agreements. This article reviews the FM clauses and considers their relevance. The authors submit that FM clauses are a useful commercial tool for achieving energy justice by ensuring the continuity of the project, despite the dire effects of the pandemic. Proposals are made for practical considerations for a post-COVID-19 future which provides the continued pursuit of policy goals of promoting renewable energy sources and increasing access to clean energy, thus accelerating just energy transitions.

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