Possibilities of upgrading solid underutilized lingo-cellulosic feedstock (carob pods) to liquid bio-fuel: Bio-ethanol production and electricity generation in fuel cells - A critical appraisal of the required processes

The exploitation of rich in sugars lingo-cellulosic residue of carob pods for bio-ethanol and bio-electricity generation has been investigated. The process could take place in two (2) or three (3) stages including: a) bio-ethanol production originated from carob pods, b) direct exploitation of bio-ethanol to fuel cells for electricity generation, and/or c) steam reforming of ethanol for hydrogen production and exploitation of the produced hydrogen in fuel cells for electricity generation. Surveying the scientific literature it has been found that the production of bio-ethanol from carob pods and electricity fed to the ethanol fuel cells for hydrogen production do not present any technological difficulties. The economic viability of bio-ethanol production from carob pods has not yet been proved and thus commercial plants do not yet exist. The use, however, of direct fed ethanol fuel cells and steam reforming of ethanol for hydrogen production are promising processes which require, however, further research and development (R&D) before reaching demonstration and possibly a commercial scale. Therefore the realization of power generation from carob pods requires initially the investigation and indication of the appropriate solution of various technological problems. This should be done in a way that the whole integrated process would be cost effective. In addition since the carob tree grows in marginal and partly desertified areas mainly around the Mediterranean region, the use of carob’s fruit for power generation via upgrading of its waste by biochemical and electrochemical processes will partly replace fossil fuels generated electricity and will promote sustainability

Comprehending environmental and economic sustainability: Comparative analysis of stability principles in the biosphere and free market economy

Using the formalism of Lyapunov potential function it is shown that the stability principles for biomass in the ecosystem and for employment in economics are mathematically similar. The ecosystem is found to have a stable and an unstable stationary state with high (forest) and low (grasslands) biomass, respectively. In economics, there is a stable stationary state with high employment, which corresponds to mass production of conventional goods sold at low cost price, and an unstable stationary state with lower employment, which corresponds to production of novel goods appearing in the course of technological progress. An additional stable stationary state is described for economics, the one corresponding to very low employment in production of life essentials such as energy and raw materials. In this state the civilization currently pays 10% of global GDP for energy produced by a negligible minority of the working population (currently ~0.2%) and sold at prices greatly exceeding the cost price by 40 times. It is shown that economic ownership over energy sources is equivalent to equating measurable variables of different dimensions (stores and fluxes), which leads to effective violation of the laws of energy and matter conservation.Comment: 51 pages, 6 figure

Coal: A Significant Factor in Germany’s Defeat in World War I

More than a hundred years have passed since the outbreak of the World War I, but there are still fundamental gaps in our understanding of the conflict. It has been generally recognized that the British blockade of Germany played the central role in bringing about Germany’s surrender. The German economy, industry and military came to suffer as a result of domestic shortages of all kinds, but especially of coal. In the gridlock of devastation and military force that had developed by 1916 coal came to represent a most effective tool of British allied force that Germany could not counter and so became a decisive factor in Germany’s collapse by 1918

Opportunities for greater Lincolnshire's supply chains: full report

A study of the key sector supply chains across Greater Lincolnshire, and identification of barriers and opportuniteis for growth

Supply chain management, 3rd party logistics & food quality & safety: evidence from Greece

The aim of this study was to examine whether or not the efficiency of the supply chain management affect the food quality & safety. We focused upon transportation, warehousing, and inventory management. We also examined why food companies choose to outsource logistics functions such as transportation and warehousing and to what extent outsourcing affected food quality & safety. We conducted a large scale quantitative survey during January to March 2005. We faxed 400 questionnaires to Greek food companies with more than 5 personnel. We got 79 usable questionnaires (response rate 19.8%). The data analysis showed that food companies have no doubt that improving food quality means increased market share and profits. Transportation & warehousing are the main cost drivers. The most significant problems of the logistics function are: (1) re-occurring failures to quality control (2) overdue expiration date (3) inefficiencies in product sorting and handling. 44% of the companies have a logistics department. 35% of companies reported that prefer to get 3rd party logistics; most of them are SMEs. 50% of Greek food companies have acquired ISO certification in production, transportation and warehousing. ISO 14001 is rarely used. Almost all companies reported that training of personnel is a factor of improving food quality

The case for transforming the approach to waste, and growing a circular economy; a design perspective.

In recent years, there has been a growing discussion of resource efficiency, the ‘circular economy’ and the economic and environmental benefits of maximising the value of resources beyond the life of a product. This Environmental Audit Committee inquiry was initiated to examine the case for transforming the approach to waste, and growing a 'circular economy'. This is an evidence paper published online at http://www.publications.parliament.uk/pa/cm201415/cmselect/cmenvaud/214/21411.htm A full transcript of the inquiry is available at http://data.parliament.uk/writtenevidence/committeeevidence.svc/evidencedocument/environmental-audit-committee/growing-a-circular-economy/oral/9635.html