Volume 3, Issue 2, 2019
European Journal of Sustainable Development Research, 2019, 3(2), em0085, https://doi.org/10.29333/ejosdr/5730
ABSTRACT: The UN Sustainable Development Goals provide a framework for developing plans and policies for sustainable development, and have spurred an increase in research and activity in this field. There is no single approach to sustainable development, as approaches will vary from country to country, reflecting national and local needs and contexts. But care is needed in moving forward with the Sustainable Development Goals, if their benefits are to be realized. This issue of the European Journal of Sustainable Development Research marks its second anniversary, and demonstrates that the journal has already made a notable impact on the field of sustainable development through having published research on many recent advances.
Effect of Injection Parameters: Injection Timing and Injection Pressure on the Performance of Diesel Engine Fueled with Palm Oil Methyl Ester
European Journal of Sustainable Development Research, 2019, 3(2), em0077, https://doi.org/10.20897/ejosdr/3918
ABSTRACT: This experimental study paper investigation mainly focused on CI engine performance with using the palm oil methyl ester (POME). The injection timing (IT) varied from 19° btdc, 23° btdc, 27° btdc and 31° btdc with increment step of 4° CA and similarly, injection opening pressure were varied from 210 bar, 220bar, 230 bar, 240 bar and 250 bar with increment order of 10 bar in the existed diesel engine. The final results were reported for optimized parameters of diesel engine with engine speed 1500 rpm and CR 17.5. The experimental results of diesel engine performance improved in terms of brake thermal efficiency (BTE) and substantial reduction of harmful emissions at both optimized engine parameters of 27°BTDC and 240 bar, when engine has powered with Palm oil methyl ester (POME) as a alternative fuel.
European Journal of Sustainable Development Research, 2019, 3(2), em0078, https://doi.org/10.20897/ejosdr/3965
ABSTRACT: Energy crisis and environmental degradation is considered most talked of the topics of modern global development. Medical waste has dangerous impacts on the environment. Besides, load shedding has come to be a great problem in socioeconomic development of Bangladesh for the reason that of the serious electricity crisis. This study also focused on energy recovery potentiality from plastic content of medical waste (PCMW) by converting it into electric energy. This plastic waste integrates an enormous amount of energy and consequently, attention in new renewable sources of energy from these wastes has been augmented, at the present time. Bangladesh as well as Jessore city faces an excessive environmental problem because of improper management of medical waste. This study demonstrated that the medical waste generation rate in Jessore city was found to be approximately 3 ton/day which is about 6.89% of total waste generation in this city throughout the study period. Besides, electric power generation projections from the PCMW were estimated at 74448 kWh per year respectively. This study suggested that appropriate PCMW management policy as well as awareness increasing regarding the management of PCMW is requirement for the development of existing status of living condition.
European Journal of Sustainable Development Research, 2019, 3(2), em0079, https://doi.org/10.20897/ejosdr/3969
ABSTRACT: Environmental degradation is an increasing problem in many parts of the world and the type of ecology prevalent in an area plays a major factor that determines the extent of degradation. The study examines causes of environmental degradation in coastal areas of south west Nigeria. It was propelled by environmental challenges, and identified responsible factors in the study area. Environmental degradation is the major concept in this study and the DPSIR framework was used in understanding the concept. The study was carried out using primary and secondary sources of data collection. The main techniques for primary data collection were questionnaire survey and focus group discussions. Data were collected from one thousand, seven hundred and eighty-two (1,782) sampled respondents who are coastal dwellers that are involved in economic activities within the coastal areas. The FGD was conducted in 54 settlements with a minimum of 10 discussants which constitute a mix of the elderly men and women in all the sampled communities. Secondary data were obtained from National Population Commission (2006). Data were analysed using descriptive and inferential statistics as well as cartographic method, and the information from the FGD were analysed using a thematic approach. The study shows that waves breaking along the coastline are the main explanatory factors responsible for coastal erosion (84.0%). Flooding in the settlements where it occurs was mostly attributed to tidal rise/tidal waves (97.0%). Tidal wave was believed to be the major cause of water hyacinth (51.8%). Pollution is caused by a mixed factor of over development of coastal areas, migration to coastal areas, population growth and increased tourism. Soil infertility is caused mainly by sea water infiltration into farmlands especially when farmlands are located too close to coast lines (73%). Over development of the coastal area is mainly responsible for sand mining (67.0%). The study concludes that environmental influence remains strong in the coastal environment. Therefore, concerted community efforts are needed to provide leadership and modalities for the management of environmental challenges in coastal communities. Fundamentally, official attention should be geared towards reducing the rate at which the environment becomes degraded in the coastal communities.
European Journal of Sustainable Development Research, 2019, 3(2), em0080, https://doi.org/10.20897/ejosdr/3927
ABSTRACT: In this paper, the effect of multilayer screen mesh wicks and CuO nano-fluid as working fluid is investigated on the performance of heat pipe. Three heat pipes were fabricated with different layers of screen mesh wicks to improve capillary action of working fluid. Heat pipes of 350 mm length and 19.5 mm diameter were used. The different mesh configurations used in this work were 100+150 mesh, 100+2X150 mesh and 4X150 meshes. The concentration of CuO nano-fluids in the experiments was maintained at 1% by weight of water. The heat pipes are tested with water and CuO as working fluid for different heat inputs of 35W, 50W 75W, 100W and 120W. The thermal resistance and heat transfer rate were determined. It is found that the thermal resistance decreases with increase in heat input. There is increase in heat transfer rate in case of CuO nanofluid loading in ordinary water compared to distilled water as working fluid. For all orientation the maximum heat transfer through the heat pipe increased as the number of mesh layer of the wick is increased. The heat transfer rate is found to be maximum at 100 l/h mass flow rate compared to that of 150 l/h.
European Journal of Sustainable Development Research, 2019, 3(2), em0081, https://doi.org/10.29333/ejosdr/5726
ABSTRACT: The need for revision, the difficulty of visualization, and the impossibility of using 2D drawings as the input of manufacturing machines make us attempt to acquire a 3D model from 2D engineering drawings. However, the main problem in this process is that we encounter many potential uncertainties. In this paper, to overcome this problem, we used the fuzzy logic as a mathematical tool based on knowledge of an expert. One of the most outstanding advantages of using the fuzzy logic is that uncertainty in related equivalent elements in different orthographic views is reduced. Another important feature of this method is that only two orthographic views are used to reconstruct the 3D model, while in previous methods, three orthographic views were used. Reducing the limitations of reconstruction of 3D models will result lower cost because of simulation of production processes on a 3D model and direct connection to CAD/CAM Systems, conservation of natural resources and more security for documents by maintaining drawings in computer memory, improved education quality and increased health level as a result of better visualization using 3D Object which will ultimately lead to sustainable development.
Effect of Injection Timing on the Utilization of B20 Blends of Dairy Scum Oil Methyl Esters (Dsome) Fulled Diesel Engine
European Journal of Sustainable Development Research, 2019, 3(2), em0082, https://doi.org/10.20897/ejosdr/3971
ABSTRACT: Diesel engines are the prime movers that are highly efficient compared to their counter part of petrol engines. However, higher NOx, particulate matter CO, HC are the draw backs associated with their operation. Renewable fuels like biodiesel and their blends are suitable and substitute for different applications as they are renewable in nature and provide satisfaction for fossil fuels of diesel which are exhaustible in nature and add burden to the Indian economy. In this direction the experiments were planned on the modified diesel engines to study the effects of Dairy scum oil methyl esters B20 blend (DSOME B20). By Advancing the time of injection from 19° to 27° BTDC, keeping injection opening pressure IOP constant results are obtained and analysed. It is noticed that higher BTE, lower emissions of smoke, HC, CO emissions while NOx increased.
European Journal of Sustainable Development Research, 2019, 3(2), em0083, https://doi.org/10.29333/ejosdr/5727
ABSTRACT: Environmental pollution and food contamination are as old as the civilization itself. It is the result of the improvement of civilization, over usage of nature, industrialization and in certainty a cost for the advancement. It is exceedingly conspicuous in Dhaka city. Air pollution is chiefly because of the vehicle emanation, modern release and consuming of non-renewable energy source. The water asset of Dhaka turns into a noteworthy wellbeing danger because of arsenic contamination, insufficient family unit/modern/restorative waste transfer and mechanical emanating the executives. Food contamination originated from the commercialism of specialists who are doing this purposely to augment benefit. Fundamental advances are to be taken to secure nature for our own reality. This paper uncovers compound pollution and contamination issues of Dhaka city, the capital of Bangladesh. Brief review of chemical induced pollution and contamination, their consequences and control. Healthcare providers/Policy makers have a major role play to the concerned field. Comprehensive literature search followed by consulting healthcare professionals about environmental pollution and food contamination. Hospital, clinic and company personnel, newspaper journalists, NGO workers given their valuable suggestions and asked help for necessary books, journal, newsletters. A few western magazine and newspapers also observed to get the necessary concern. Projections were based on public life pattern, their food habits, pollution and contamination sources, waste disposal features of urban life as well as industry and hospital waste disposals. Pollution and adulteration are the most notorious enemy of mankind. Civilization has its own drawback that even causing destruction of itself. Very few people raised voice on this but crippled by the facts of commercialism. The scope of this article is limited to chemical pollution of air and water, medical or household waste products and food contaminants and adulterants. A few discussions based on real life experience and recent studies or reports from various journals and news articles are summarized here. Both general people and the old system, are responsible for this unlivable condition of Dhaka city. The population is not the sole for this instance. A sense of poor rules and regulation is always found everywhere. Negligence is becoming a wide spread disease contaminating illiterate to well educated, all kind of people. Many articles and documents found in concerned area of research, but the scope of this research is on its focus point chemical hazards and burdens of Dhaka city. Still the most important aspect is covered, but fact is less amount of recent data found in few areas. The language of this article is too simple to understand by people with simple literacy. Pharmacists, doctors, nurses, hospital authorities, public representatives, policy makers and regulatory authorities have to acquire much from this article. Any article or research is based on the think doing good for mankind, at least going ahead from the present situation, overcoming problems and measures. The article should create a guideline for the future policy makers of both government and other sectors to review the alarming situation of chemical pollutions and food contaminants of Dhaka, along with the whole Bangladesh. Again, world business is moving around Asian countries, Bangladesh will be an important business hub within next few decades. This article should remind policy makers that we should not forget mankind, giving places to industrialization and development.
Comparison of SHF and SSF Processes under Fed Batch Mode on Ethanol Production from Pretreated Vegetable Processing Residues
European Journal of Sustainable Development Research, 2019, 3(2), em0084, https://doi.org/10.20897/ejosdr/3950
ABSTRACT: Vegetable wastes containing high starch in contrast to lignocellulosic biomass cause environmental threat due to non-judicious disposal and have not been exploited for bioethanol production. The ethanol production from steam or dilute sulphuric acid (DSA) pretreated residues was compared under fed-batch Separate Hydrolysis and Fermentation (F-SHF) or Simultaneous Saccharification and fermentation (F-SSF). The volumetric ethanol productivity, ethanol yields and ethanol contents (g/L) were higher from DSA than steam pretreatment in F-SHF, while latter two did not differ significantly between the pretreatments under F-SSF mode. High RS utilization was observed towards the last phase (72-120 h) in steam pretreatment under F-SSF. Fermented broth from F-SSF had higher levels of inhibitors such as phenolics, furfural and Hydroxymethyl furfural compared to F-SHF and also in the DSA pretreatment. A comparison of the ethanol production from the processes vis-à-vis enzyme and yeast feeding and pretreatment conditions, overall processing time etc. showed that F-SSF had higher requirement of enzymes and yeast than F-SHF. Possibility to curtail fermentation at 24 h under F-SHF mode due to very low ethanol production after 24 h equated the processing time under the two modes to 120 h and this made F-SHF the most advantageous process for the selected residues.