Abstract-Solar drying is one of the oldest drying techniques in which solar radiation is used. Drying is an essential process in the preservation of agricultural crops and in industries, such as textile production, dairy processing, cement production, clay brick production, tile production, wood and timber processing, wastewater treatment and biomass treatment. Solar drying is another very important application of solar energy. Solar dryers use air collectors to collect solar energy. Solar dryers are used primarily by the agricultural industry. The purpose of drying an agricultural product is to reduce its moisture content to a level that prevents its deterioration. In drying, two processes take place; One is a heat transfer to the product using energy from the heating source, and the other is a mass transfer of moisture from the interior of the product to its surface and from the surface to the surrounding air. In short, we conduct a comprehensive review of summarize the research and development work for solar drying. It is hoped that this review work maybe valuable and appropriate for further development work.Index Terms-Solar drying, solar energy, solar thermolysis. I. INTRODUCTIONSolar drying is one of the oldest drying techniques in which solar radiation is used, i.e. drying under direct sunlight to preserve food or non-food products since ancient times. Solar drying does not require man produced energy, uses renewable energy and applicable in any part of the world. Nevertheless, in order to increase the efficiency of material drying using solar radiation, proper innovation or application is needed. Owing to costly, limited, and non-environmentally friendly fossil fuels, solar drying is becoming a popular option to replace the mechanical thermal dryers [1].The main aim of this paper is to summarize the research and development work for solar drying. It is hoped that this review work maybe valuable and appropriate for greenhouse Manuscript received August 29, 2016; revised November 4, 2016 kr).Chan Jin Park is with the Department of Energy and Env. Engineering and the Department of Climate International Cooperation, Incheon National University, Republic of Korea (e-mail: cjpark@inu.ac.kr). gas reduction technology. II. HISTORY OF SOLAR ENERGYProbably the oldest large-scale application known to us is the burning of the Roman fleet in the bay of Syracuse by Archimedes, the Greek mathematician and philosopher (287-212 B.C.). Scientists discussed this event for centuries. From 100 B.C. TO 1100 A.D., authors made reference to this event, although later it was criticized as a myth because no technology existed at that time to manufacture mirrors [2]. The basic question was whether or not Archimedes knew enough about the science of optics to devise a simple way to concentrate sunlight to a point at which ships could be burned from a distance. Nevertheless, Archimedes had written a book, On Burning Mirrors [3], which is known only from references, since no copy survived.During the 18th century, solar furnaces capab...

Abstract-In this study, we investigated the current status of atmospheric environment with a variety of materials on the central of various environmental installments which are located in S-Free Economic Zone, Incheon. We were able to confirm that occurrence rate of Acetaldehyde is the most high among odor materials. Thus we tried to find characteristics of Acetaldehyde in odor emitting facility and the solutions that can increase efficiency of removal. In particular, Acetaldehyde indicates high efficiency in general treatment processing, however the minimum sensible concentration is very low and indicates the high rate at the level of contribution in odors. Accordingly, we proposed to estimate processing efficiency of existing activated carbon by making activated carbon that is included coffee wastes.Index Terms-Acetaldehyde, coffee waste, activated carbon. I. INTRODUCTIONIn S-Free Economic Zone, Incheon, there is a variety of industrial facilities emitting atmospheric pollution and in particular, the odor problems are occurred constantly. In main odor emitting facility, there is sewage treatment plant, incineration facility of residential wastes, food and drink resource recovery plant and collection facility of food garbage. The living accommodations are concentrated around the main odor emitting facility and local residents are getting damaged by the odor. In these facilities, the occurrence amount of Aldehyde type was significantly low among designated odor materials [1]. We tried to find the method of increasing processing efficiency more than existing activated carbon as the method of increasing processing efficiency on these materials are requested. Accordingly, we estimated processing efficiency of odor materials by making activated carbon with coffee wastes based on study purpose. Current consumption level of coffee in Korea is very high as the top of the world. On the other hands, the amount of coffee wastes is getting increased. Coffee wastes are occurred after brewing coffee. 0.2% of the Manuscript received August 30, 2016; revised November 9, 2016 coffee wastes were used to brew coffee and the rest of 99.8% is thrown out as coffee wastes [2]. For every year, approximately 27,000 tons of coffee wastes are getting thrown out but it is contributed to greenhouse gas emission after it is sorted as residential wastes but not food wastes [3]. Currently people attempt to use recyclable materials or energy source by utilizing coffee grounds in accordance with it. Coffee wastes is known as deodorizing effects and easily found, therefore it is expected to be effective in economics. In precedent study using existing coffee wastes, we estimated also adaptability of odor processing by precedent studies to learn the efficiency of heavy metals removal. II. METHODSFirst, we will investigate occurrence characteristics and current status about sample gas Acetaldehyde, coffee wastes characteristics, current status of practical use and precedent studies. Next, we will estimate propriety and expectation effectiveness of ...

Abstract-This study is to identify the greenhouse gases from landfill facilities and the characteristic of odor emission near urban area by selecting a representative landfill site that conforms with the conditions and by looking into related references, and aimed to seek for measures for conducting further research on the efficient management of landfill gas and odor control. Through the analysis of statistical data of landfill gas in recent years, the trend in generation and collection of landfill gas and current state of odor could be identified. Thus, this paper aims to find the relation between the landfill gas and odor as well as generation characteristic and then to be utilized for the research about efficient management method.

Abstract-Wastewater treatment generates significant amount of greenhouse gases mainly methane and nitrous oxide. Therefore, reducing these emissions from the treatment process and the contribution of the wastewater treatment processes to global warming is a major concern. Also, odors can be generated and released from virtually all phases of wastewater collection, treatment, and disposal. Most odor-producing compounds found in domestic wastewater and in the removed solids result from anaerobic biological activity that consumes organic material, sulfur, and nitrogen found in the wastewater. In this study, estimation of greenhouse gas and reduction of greenhouse gas and odor emissions from wastewater treatment plants in urban areas were made.

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