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Open Access Article
1 - Environmental Design of Civic Wastes Location, with Emphasis on Ecological Landscape Design (Case study: Kahrizak landfill of Tehran)
seyed fazel ghazavi fereshteh habib Sara NahibiBackground and Objective: Landfills cause environmental degradation and pollution by producing greenhouse gases such as methane and carbon dioxide and producing leachate as well as contaminating surface and ground water. Recently, the ecological design approach as a fra MoreBackground and Objective: Landfills cause environmental degradation and pollution by producing greenhouse gases such as methane and carbon dioxide and producing leachate as well as contaminating surface and ground water. Recently, the ecological design approach as a framework for reducing environmental degradation by adapting municipal solid waste management to environmental processes is expanding widely. Ecological design strives to maximize comfort by minimizing damage to the environment and natural processes while enhancing people's quality of life. Ecological design strives to adapt to nature through the use of natural materials as well as environmental considerations.Method: In the present study, according to the definition of sustainable design and understanding its applications, in order to achieve the best, most complete and practical design for the site in question, existing maps of the area, including aerial maps, topography , GIS, vegetation, upstream maps, site development plans, survey of active sites in Landfill, survey of contaminant types, study of COD and BOD indices of the site have been studied, as well as review and identification of existing status (Environmental, Physical, Climatic, Landscape, Land Use, Transportation, Biological) through observation, photography and interviewing strategic design of this area is provided with ecological-based approach by site staff and residents of neighboring neighborhoods in accordance with the principles and principles governing the design of industrial environments.Findings: The existing plan prevents contamination of groundwater levels and prevents contaminated surrounding urban areas and agricultural lands. Restoration of damaged parts of the landfill, reduction of the risk of contamination by animals and noise pollution and unpleasant odors and its release into the atmosphere. The landfill is one of the main sources of greenhouse gas emissions in the country through biogas production from landfill gas collection and reduction of fossil fuel use. By collecting and using Landfill gases as fuel and power generation, the rate of emissions to the atmosphere is reduced. Maximum use of biogas is due to the greater use of digesters.Discussion & Conclusion: Design criteria are mainly based on existing constraints and needs and make the designer's policy clearer and significantly help in locating applications. Applying these criteria will help to enhance opportunities and take advantage of existing opportunities and make the project less threatening. After developing the strategies, designing from different perspectives is done to finally select the best plan for implementation by reviewing the concepts and comparing them with each other and in accordance with international standards. At the end of the study, the three concepts are finally selected and after examining these three concepts together, the winning concept is selected for the execution phase. Landfill is an inevitable step in waste management. In today's growing population, landfill has become an integral part of communities, but landfills should not be used as a last resort, but rather as a mean to create new uses for it. Converting landfills to recreational uses while also providing a pleasant place to meet the recreational and sporting needs of the area's inhabitants. Human landfill contaminates the area and destroys many animals and causes major disturbance in nature. Brings to enhance the quality of the landfills and with as the landfill site becomes more prone to disruption, it is necessary to look at the area as a demolished mosaic and take steps to repair it. Manuscript profile -
Open Access Article
2 - Providing Optimal Model for Municipal Solid Waste Management System Using Genetic Algorithm Based on Fuzzy Logic (Case Study: Tehran City)
monireh ahani reza arjmandi hasan hoveidi Jamal Ghoddousi mohammad reza miri lavasaniBackground and Purpose: In recent years, a variety of models have been used to evaluate the waste management systems in Tehran in order to select the best waste management options. But the problem of the final disposal of waste in Tehran is still one of the issues relat MoreBackground and Purpose: In recent years, a variety of models have been used to evaluate the waste management systems in Tehran in order to select the best waste management options. But the problem of the final disposal of waste in Tehran is still one of the issues related to the environmental management of the metropolis. The purpose of this study is to provide one model for allocating optimal annual quantities of waste to waste management subsystems of Tehran in order to achieve the highest efficiency, reduce costs and increase system revenue.Materials and Methods: In this research, first by referring to the Arad Kooh complex in Tehran and interviewing with experts and using the information recorded in this complex, the required data was collected. Then, an optimal model proposed for allocating optimal annual amount of municipal waste with considering all of limitations to 5 sub-systems of recycling, aerobic compost, anaerobic digestion, incinerator , landfill using genetic algorithm improved by fuzzy logic with the aim of reducing the total cost of the municipal waste management system in the MATLAB environment and its results were analyzed.Findings: The significant results showed with increasing capacity the subsystems with lower cost and more profitability, the system will not necessarily seek to be optimized and optimal amount of waste allocated to each of the subsystems such as recycling, aerobic compost, anaerobic digestion, incinerator and landfill were estimated about 750,000, 960000, 182000, 325000, 780000 tons in each year, respectively.Discussion and Conclusion: According to the results of the optimal model proposed in this study, it is necessary to carefully follow the flow and optimal allocation of waste from the annual production of Tehran to each of the following subsystems: recycling, aerobic compost, anaerobic digestion, incinerator and landfill in order to achieve the high annual efficiency for municipal solid waste management system in Tehran city. Manuscript profile -
Open Access Article
3 - Simultaneous Simulation of Gasification Reactor and Steam Cycle of Tehran's Waste Incineration Power Plant
Milad Banaei gholamreza SalehiBackground and Objective: The purpose of this paper is simulationg of gasification and steam cycle of Tehran waste power plant in order to achieve and identify the parameters affecting the efficiency and output of power plant. The information obtained through this simul MoreBackground and Objective: The purpose of this paper is simulationg of gasification and steam cycle of Tehran waste power plant in order to achieve and identify the parameters affecting the efficiency and output of power plant. The information obtained through this simulation, in addition to being used to increase the productivity and efficiency of Tehran power plant, can be used as valuable information in other waste power plants of the country should also be employed. Method: By considering the obtained data from Process Flow Diagram, actual operation condition of this plant, the analyses of Tehran’s urban waste and using Aspen plus software as the simulating and modeling tool. The developed simulation model has been validated by using actual operating condition of the plant and also the experimental results of the verified papers. Findings: The result shows that the moisture content and the composition of the inlet MSW have significant impact on the output power of this plant. The findings indicate that a 10% reduction in the moisture content of inlet MSW cause an increase of 30% in output power. Also, by increasing the wood and the green waste in the combination of inlet MSW, the output power will be reduced. Discussion and Conclusion: Generally, MSW has low thermal value due to its high percentage of biological ingredients. Therefore, identifying the factors which are affecting the efficiency and power output of the power plant is essential and important. In this regard, the simulation shows that the high percentage of wood-containing compounds and green waste in the input waste will reduce the output power of this plant. As a result, implementing necessary measures to reduce the amount of moisture content of incoming waste as well as achieving the combination with the least amount of wood and green waste will increase the efficiency and the output power of this plant. Manuscript profile -
Open Access Article
4 - Investigation and evaluation of methane production using standard mathematical models by municipal solid waste
Seyed Ali Asghar Shariat Hosseini Kazem Bashirnezhad Peyman Bashi ShahabiBackground and Objective: Due to the increasing use of biomass technologies, especially methane gas produced from the decomposition of organic matter in municipal solid waste and its use as a source of energy production, and the importance of methods used in estimating MoreBackground and Objective: Due to the increasing use of biomass technologies, especially methane gas produced from the decomposition of organic matter in municipal solid waste and its use as a source of energy production, and the importance of methods used in estimating methane gas and Energy production, a study based on the use of mathematical models to estimate the methane gas produced at the Mashhad landfill. Material and Methodology: This research was conducted in 1398 in Mashhad. The method used in this study is based on the use of IPCC mathematical models developed by the US Environmental Protection Agency (EPA). Findings: According to mass balance and stoichiometric calculations performed for two categories of fast biodegradable and slow biodegradable materials, about 53.89% of the total landfill gases are methane and 46.11% are carbon dioxide. According to the calculations, the potential for methane production capacity is 115.33 cubic meters of methane per megagram of waste and the methane production rate is 0.021 per year. The data were analyzed in Landgem software. Discussion and Conclusion: According to the results obtained in 1414, the maximum volumetric flow of methane produced is 2.6×107 cubic meters per year. Also, the high and low thermal values of landfill gas are 21.484 and 19.361 megajoules per cubic meter, respectively. In case of direct use of landfill gas in power generators, in 1414, the highest net output power with high and low thermal value of landfill gas can be obtained 11503.633 kw and 10366.83 kw, respectively. Manuscript profile -
Open Access Article
5 - Evaluation of municipal solid waste final disposal scenarios through life cycle assessment and analytic hierarchy process methods (Case study: Tehran)
Somayeh Khan Pouraghdam Mehdi Ghanbarzadeh Lak Mehrdad Mohtadi Mohammad Reza Sabour Background and Objective: An integrated model of life cycle assessment and hierarchical analysis was developed to determine the best practical method for municipal solid waste disposal. The model used for environmental and technical assessments of scenarios inclu More Background and Objective: An integrated model of life cycle assessment and hierarchical analysis was developed to determine the best practical method for municipal solid waste disposal. The model used for environmental and technical assessments of scenarios included (A) landfilling of wastes without energy extraction; (B) waste incineration with energy recovery and ash burial; and (C) production of compost from the organic components and landfilling other wastes. Method: In order to conduct environmental assessments, the amount of greenhouse gas emissions (GHGs) was estimated by life cycle of the disposal method. Technical evaluations were carried out based on the hierarchical analysis method and a survey of experts. In order to analyze the results of the proposed model, Tehran city in Iran was selected as a case study. Findings: The highest greenhouse gas emissions occurred in scenario A, and the lowest was associated with scenario B. Maximum discounts on emissions from burning putrescible wastes, paper and cardboards were obtained in scenario B. In contrast, landfilling of such wastes in scenarios A and C was the main source of methane production. Although the incineration of plastic wastes might lead to more energy extraction in scenario B, the generation of non-biological CO2 had an incremental effect on GHG emissions. Scenarios A and C had a relatively high superiority over scenario B from the perspective of most technical criteria, but the probability of leachate in these scenarios reduced their technical advantages. Discussion and Conclusion: Based on the combination of evaluations, the method of landfilling without energy extraction is the most inappropriate option, and waste incineration with energy extraction leads to the lowest greenhouse gas emissions and is technically acceptable. Manuscript profile -
Open Access Article
6 - The use of System Dynamics Methodology for Analysis of Generation, Collection and Transport Systems of Municipal Solid Waste (The case of metropolitan city of Tehran)
Mohammad Ali Afshar Kazemi Leila Eftekhar Ghasem Ali OmraniIntroduction: The waste generation is the product of different human activities that have been transformed because of the change of life style and multilateral development. By progression in science and technology, waste management has been reviewed scientifically. With MoreIntroduction: The waste generation is the product of different human activities that have been transformed because of the change of life style and multilateral development. By progression in science and technology, waste management has been reviewed scientifically. Within the eight branches of functional elements of municipal solid waste management system, generation, collection and transportation have especial importance. The significance of waste generation is due to being the first loop in the chain of recycling and reducing production is the base of comprehensive solid waste management pyramid .Otherwise the greatest part of costs for managing solid waste systems relates to collection and transportation of wastes. Materials & Method: In this paper we described municipal solid waste management system and dynamic modeling methodology. After that we reviewed the literature research about dynamic modeling of municipal solid waste management systems. In the next step, we illustrated a dynamic model for generation, collection and transportation of wastes in the city of Tehran. Then we analyzed the findings from the base run of model and examined that with validation tests to gain accredited model. Result& Discussion: After achieving a valid model the improved scenario have been built based on 3R techniques and policy and sensitivity analysis. In Tehran city, emphasis on reducing production and decreasing of per capita waste generation, awaken citizens and officials on necessity of separation wet and dry wastes in era and Effort to improving the performance of Dry waste separation plan are the best options to manage generation ,collection and transportation wastes subsystems . Manuscript profile -
Open Access Article
7 - Evaluation of the Influence of Sulfur and Municipal Solid Waste Compost on Soil pH and Uptake of Some of the Micronutrients by Corn.
Mohammad Reza Sabour Morteza Shokri Saeed Samavat Mohammad Reza FarahaniIntroduction: Application of sulfur and organic matters has an important role in improving ofphysicochemical properties in soils. In this research optimizing the mixture design between sulfur andmunicipal solid waste compost for application in an alkaline soil was teste MoreIntroduction: Application of sulfur and organic matters has an important role in improving ofphysicochemical properties in soils. In this research optimizing the mixture design between sulfur andmunicipal solid waste compost for application in an alkaline soil was tested.Materials & Methodology: In this research randomized designs with three replications is used. Theapplied factors were the total fertilizer content of compost and sulfur, M, and the ratio between sulfurand compost in fertilizer, T. M factor had four options, zero,0.5, 1 and 2 percent of soil weight and Tfactor include 1:1, 1:2, 1:3 and 1:4 sulfur to compost ratios.Discussion & Results: The obtained results indicated that all of treatments with 99 percentcontingency decreased the soil pH and T2M4 treatment had the best influence. The content of Znuptake by corn has been significant in 5 percent level in many treatments. The content of Fe uptakehad remarkable incensement in treatments, but it wasn't significant. Manuscript profile -
Open Access Article
8 - Investigation of compost production from municipal solid waste using solid state bioreactor (Case study: Amol)
Mohammad Hossein Heidarzadeh Hossein Amani Behzad Javadian Hasan Kariminezhad Mojtaba NavaeiBackground and Objective: Due to the large volume of waste produced in Amol and the proximity of the city to the sea and the forest, a proper waste management is urgent necessaryto prevent environmental pollution. On the other hand, organic waste occupies more than 80% MoreBackground and Objective: Due to the large volume of waste produced in Amol and the proximity of the city to the sea and the forest, a proper waste management is urgent necessaryto prevent environmental pollution. On the other hand, organic waste occupies more than 80% of the Amol municipal solid waste. Therefore, a new method for compost production from municipal solid waste and a suitable quality comparison of the produced compost with Iranian National Standards Organization are aims of this study. Method: In this paper, compost production at a greenhouse closed and controlled condition as a novel method using of homemade designed crusher was studied. In this work also a new design of solid state bioreactor was used. In this reactor, aeration and stirring were carefully controlled; therefore, this reactor can be used in a large scale. Also parameters such as temperature, pH, C/N and ash were measured during the compost production. Findings: The results showed that the production of compost from this study obtained during 25 days that is less than the current processes. The ratio of carbon to nitrogen of the final product, pH and the electrical conductivity were 19.89, 7.29 and 7.7 dS/m, respectively. Also, results showed that the produced compost parameters are in agreement with first class compost based on the Iranian National Standards Organization. Discussion & Conclusion: According to the results, the method of this research can be proposed in high scale and high quality compost production from municipal waste. Manuscript profile -
Open Access Article
9 - Differential Concentrations of some Nutrient Element in Forage of Corn (Zea mays L.) as Affected by Organic Fertilizers and Soil Compaction
N. Najafi A. MohammadnejadSoil compaction is one of the most important limiting factor for normal crop growth, because it reduces absorption by the plant. Application of organic fertilizers in agricultural soils can reduce the detrimental effects of soil compaction on plant growth and also suppl MoreSoil compaction is one of the most important limiting factor for normal crop growth, because it reduces absorption by the plant. Application of organic fertilizers in agricultural soils can reduce the detrimental effects of soil compaction on plant growth and also supply some nutrients to plant. Thus, a factorial experiment was carried out in a randomized complete block design with three replications and 14 treatments to evaluate the effects of organic fertilizers in mitigating soil compaction. The first factor in this study was the source and amount of organic fertilizer at seven levels (control, farmyard manure, sewage sludge compost and municipal solid waste compost and each of organic fertilizers at two levels of 15 and 30 g/kg of soil). The second factor was soil compaction at two levels (bulk density of 1.2 and 1.7 g/cm3). To perform this experiment, 10 kg of dry soil was poured into special PVC pots and then seeds of single cross 704 corn were planted. At the end of the growth period, the corn shoot was harvested and concentrations of phosphorus (P), potassium (K), sodium (Na), iron (Fe), zinc (Zn), manganese (Mn), cadmium (Cd) and lead (Pb) were determined by dry ashing method. The results showed that concentrations of Cd and Pb in the shoot, related to the different treatments, were negligible. Concentrations of P, K, Fe, Mn and Zn in the corn shoot were increased significantly by application of farmyard manure, sewage sludge compost and municipal solid waste compost at both levels of soil compaction. However, Na concentration of shoot did not change significantly. Soil compaction significantly reduced P, Fe, Mn and Zn concentrations of corn shoot, but it affected concentrations of Na and K significantly. Application of organic fertilizers and increasing their levels reduced the negative effects of soil compaction on nutrients uptake by corn plant. This study showed that to improve forage corn nutrition, application of 15 or 30 g of farmyard manure or sewage sludge compost or municipal solid waste compost per kg of soil can be recommended to similar compacted and non-compacted conditions. Manuscript profile -
Open Access Article
10 - Solid Waste Disposal Site Selection Using the Fuzzy and AHP Integrated Method (A Case Study: Kouhdasht City)
Siamak Baharvand Salman SooriWaste disposal site selection is a critical issue in the urban planning process because of its enormous impact on the economy, ecology, and the environmental health of the region. Waste disposal site selection process aims to locate the areas that will minimize hazards MoreWaste disposal site selection is a critical issue in the urban planning process because of its enormous impact on the economy, ecology, and the environmental health of the region. Waste disposal site selection process aims to locate the areas that will minimize hazards to the environment and public health. In the present study, in order to select sites for dispose of urban waste of Kouhdasht, in addition to TM and ETM+ images, the following data layers and maps have been utilized: distance from city, lithology, slope, ground water, distance from road and other important suburban areas. According to the results of use of the AHP-Fuzzy in Landfill Site, 35.06, 24.85, 36.23, 3.85 and 27.4 percent of the area are located in very unsuitable, unsuitable, moderate and suitable classes respectively. Manuscript profile -
Open Access Article
11 - بررسی اثر مقادیر مختلف کمپوست زباله ی شهری و کودِ گاوی بر مقدار وزن خشک و عناصر سنگین در گیاهِ رُزماری (Rosmarinus officinalis L )
سهیلا کاوه مجید فکری مجید محمودآبادی ناصر برومندمقدمه و هدف: رزماری با نام علمی(Rosmarinus officinalis L.) و محلی اکلیل کوهی، بوته­ای همیشه سبز و معطر است که از دیرباز به عنوان گیاهی دارویی از برگ­ها و اسانس آن در صنایع داروسازی و آرایشی - بهداشتی استفاده می­شود. تحقیقات اندکی در مورد تولید رزماری در گل&s Moreمقدمه و هدف: رزماری با نام علمی(Rosmarinus officinalis L.) و محلی اکلیل کوهی، بوته­ای همیشه سبز و معطر است که از دیرباز به عنوان گیاهی دارویی از برگ­ها و اسانس آن در صنایع داروسازی و آرایشی - بهداشتی استفاده می­شود. تحقیقات اندکی در مورد تولید رزماری در گل­خانه وجود دارد. روش تحقیق: در این پژوهش اثر کود­های آلی، کمپوست زباله­ی شهری و کودِگاوی، بر میزان وزن خشک و غلظت عناصر سنگین در اندام هوایی و ریشه­ی رزماری بررسی شده است. این پژوهش در گل­خانه­ی تحقیقاتی دانشگاه شهید باهنر کرمان، به صورت آزمایش فاکتوریل در چارچوب طرح کاملاً تصادفی با سه تکرار انجام شد. تیمارها شامل کمپوست زباله­ی شهری و کودِ گاوی به طور جداگانه، هر یک در سه سطح 0، 2 و 4 درصد بوده­اند. نتایج و بحث: نتایج نشان داد که افزایش سطوح کمپوست باعث بهبود معنی­دار مقدار وزن خشک گیاه نسبت به نمونه­ی شاهد گردید. این افزایش وزن خشک در تیمار کود گاوی نیز مشاهده شد. افزایش مقدار کمپوست، افزایش چشمگیری در غلظت عناصر سنگین (Cd, Cu, Pb) در اندام هوایی رزماری در پی نداشت، اما مقدار عناصر کم مصرف (Fe, Zn) در گیاه افزایش یافت. مطابق نتایج به دست آمده به نظر می­رسد مقدار عناصر سنگین جذب ­شده توسط رزماری، به میزانی نیست که این عناصر را وارد چرخه­ی غذایی انسان­ کند، بنابراین ممکن است برای سلامتی انسان خطری ندارد. توصیه کاربردی- صنعتی: رزماری یکی از گیاهان دارویی پرمصرف در صنایع داروسازی، آرایشی- بهداشتی و مواد غذایی است. تحقیق انجام شده نشان می­دهد که مقدار عناصر سنگین جذب شده به وسیله­ی این گیاه در شرایط استفاده از کودهای کمپوست زباله شهری، کم است و احتمال می رود که استفاده از آن در شرایط مذکور برای سلامتی انسان مشکلی ایجاد نمی­کند. Manuscript profile -
Open Access Article
12 - Trace Metals Content of Soil around a Municipal Solid Waste Dumpsite in Gombe, Nigeria: Assessing the Ecological and Human Health Impact
Mohammad Sulaiman Jonnie Asegbeloyin Janefrances Ihedioha Ebube Oyeka Esther Oji -
Open Access Article
13 - Life cycle cost of different pretreatment scenarios to increase biogas production from municipal solid waste in Tehran
Hossein Heydarian Roya Mafigholami Alireza Noorpoor Hossein Ghanavati Sanaz Khoramipour
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