International Journal of Literature and Arts 

About: International Journal of Literature and Arts is an academic journal published by Science Publishing Group. The journal publishes majorly in the area(s): Renewable energy & Poetry. It has an ISSN identifier of 2331-0553. It is also open access. Over the lifetime, 430 publications have been published receiving 1691 citations. The journal is also known as: IJLA.

Review of 12 Principles of Green Chemistry in Practice

Abstract: This paper provides an overview of aplicability 12 principles and future trends of Green Chemistry. Green or Sustainable Chemistry is a term that refers to the creation of chemical products and processes that reduce or eliminate the use and production of harmful substances. They are used exclusively chemicals and chemical processes that do not have negative consequences for the environment. It is based on twelve principles that can be used to initially create or recreate molecules, materials, reactions and processes that are safer for human health and the environment. The processes of the Green Chemistry that have been developed to date include almost all areas of chemistry, including organic, inorganic, biochemistry, polymer, toxicology, environmental, physical, technological, etc. Through the several prevailing trends of the green program such as catalysis, biocatalysis and the use of alternative: renewable feedstock (biomass), reaction media (water, ionic liquids and supercritical fluids), reaction conditions (microwave irradiation) and new synthetic pathways (photocatalytic reaction), the dual goals – environmental protection and economic benefit can be achieved. This article shows examples of the prevailing trends in ways that Green Chemistry reduces the impact of chemical processes and technologies on the environment.

Comparison of Organic Solar Cells and Inorganic Solar Cells

Abstract: The fluctuating price of energy, due to a variety of reasons ranging from geo-political constraints to national and international economic issues, and the fact that these energy resources are finite, can be seen as the main incentives to make a transition to a clean energy society. Solar energy is just one of many ways to make this transition a reality, and of the raft of clean energy technologies available, solar energy technology does offer appealing prospects. With the fact that solar energy offers an inexhaustible supply that is literally pollution-free, and coupled to the fact that the planet receives more sunlight in one day than what is required to meet the energy demands of the world for one year, utilizing this resource will undeniably be good for the business community and for the public. While solar energy has been harnessed for centuries, the modern approach has been to construct solar cells and solar module arrays using silicon; with the experience garnered from its use in the semiconductor industry, silicon was a natural choice for use in converting sunlight into usable electricity.

Production of biodiesel from waste cooking oil and factors affecting its formation: A review

Abstract: Growing concern regarding energy resources and the environment has increased interest in the study of alternative sources of energy. To meet increasing energy requirements, there has been growing interest in alternative fuels like biodiesel to provide a suitable diesel oil substitute for internal combustion engines. Biodiesels offer a very promising alternative to diesel oil since they are renewable and have similar properties. It is a promising substitute as an alternative fuel and has gained significant attention due to the predicted shortness of conventional fuels and environmental concern. The utilization of liquid fuels such as biodiesel produced from waste cooking oil by transesterification process represents one of the most promising options for the use of conventional fossil fuels. However, as the biodiesel is produced from vegetable oils and animal fats, there are concerns that biodiesel feedstock may compete with food supply in the long-term. Hence, the recent focus rely on using waste cooking oil as the substantial feed stocks for biodiesel production.

Biological Purification Processes for Biogas Using Algae Cultures: A Review

Abstract: Bioenergy is a type of renewable energy made from biological sources including algae, trees, or waste from agriculture, wood processing, food materials, and municipalities. Currently, the uses of renewable fuels (bioethanol, biodiesel, biogas and hydrogen) are increased in the transport sector worldwide. From an environmental and resource-efficiency perspective biogas has several advantages in comparison to other biofuels. The main components of biogas are methane (CH4) and carbon dioxide (CO2), but usually biogas also contains hydrogen sulphide (H2S) and other sulphur compounds, water, other trace gas compounds and other impurities. Purification and upgrading of the gas is necessary because purified biogas provides reductions in green house gas emissions as well as several other environmental benefits when used as a vehicle fuel. Reducing CO2 and H2S content will significantly improve the quality of biogas. Various technologies have been developed and available for biogas impurity removal; these include absorption by chemical solvents, physical absorption, cryogenic separation, membrane separation and biological or chemical methods. Since physiochemical methods of removal are expensive and environmentally hazardous, and biological processes are environmentally friendly and feasible. Furthermore, algae are abundant and omnipresent. Biogas purification using algae involved the use of algae’s photosynthetic ability in the removal of the impurities present in biogas. This review is aimed at presenting the algal characteristics, scientific approach, gather and clearly explain the main methods used to clean and purify biogas, increasing the calorific value of biogas and making this gas with characteristics closest as possible to natural gas through algae biological purification processes.

Experimental Analysis on Thermal Efficiency of Evacuated Tube Solar Collector by Using Nanofluids

Abstract: This research is to study performance of a evacuated tube solar collector when silver (Ag(30nm)) + distilled water and oxide titanium (ZrO2(50nm)) + distilled water nanofluids was taken as the working fluid. With higher thermal conductivity of the working fluid the solar collector performance could be enhanced compared with that of distilled water. The two types of nanoparticles are used to investigate at different concentration (i.e. 0, 1, 3 and 5 % vol), mass flow rate (30,60 and 90 lit/hr m2) and the based working fluid was distilled water. The effect of different nanoparticle concentrations of Ag and ZrO2 mixed with distilled water as base fluid was examined on solar collector efficiency for different mass flow rates (30, and 90 lit/hr m2). The area under the curve as an index was used for comparing the effects of mass flow rates and nanoparticle concentrations on the collector total efficiency. The experimental results indicated that the concentration at 1%vol showed insignificant results compared with distilled water. As well as The nanofluids (Ag + DW), at concentrations (1, and 5%vol) and mass flow rates (30, and 90 lit/hr m2), the thermal solar characteristics values of FR(τα), – F RUL were 0.488, 1.168 W/m2.k , 0.593 and 1.252 W/m2.k, while the nanofluid (ZrO2 + DW) 0.437,1.025 W/m2.k ,0.480 and 1.140 W/m2.k respectively. Whereas in the case of distilled water at mass flow rates 30 lit/hr m2 and 90 lit/hr m2 were 0.413,0.973 W/m2.k,0.442 and ,1.011 W/m2.k respectively. Moreover use of nanofluids (Ag(30nm) + + distilled water) and( ZrO2(50nm) + distilled water) as a working fluid could improve thermal performance of flat plate collector compared with distilled water, especially at high inlet temperature. The solar collector efficiency for nanofluid (Ag(30nm) + distilled water) was greater than nanofluid (ZrO2(50nm) + distilled water) due to small particle size for the silver compared with zirconium oxide as well as high thermal conductivity for silver. The type of nanofluid is a key factor for heat transfer enhancement, and improve performance of evacuated tube solar collector.