scholarly journals METHANE FERMENTATION TECHNOLOGY COMBINE WITH GENERATOR. SOLUTION FOR DOMESTIC WASTE TREATMENT IN LARGE URBANS, CONTRIBUTE TO CLIMATE CHANGE INHIBIT

2010 ◽  
Vol 13 (3) ◽  
pp. 29-39
Author(s):  
Phuoc Van Nguyen ◽  
Diem Thi Thuy Nguyen ◽  
Thanh Hoang Lan Nguyen
Keyword(s):  
Climate Change ◽  
Anaerobic Digestion ◽  
Solid Waste ◽  
Waste Treatment ◽  
Electricity Production ◽  
Methane Generation ◽  
Potential Development ◽  
Domestic Solid Waste ◽  
Short Time ◽  
Fermentation Technology

Based on the existing condition of the treatment of domestic solid waste in Vietnam and the researches of the potential development of CDM in the national and international areas, the study finds out that if anaerobic digestion technology is applied, 3.6 million kWh per day is produced from 21.500 tons/ day domestic solid waste, which is composed of 70 – 85% organic material. Thereby, this study brings out a profit of 160.000 USD per day. Moreover, concerning emission reduction, research results from Omid tayyeba in SWECO show that, anaerobic digestion technology reduces 1,6 times more than composting technology and 1,5 times more than landfills technology which have electricity production system from gas. Based on that, the study suggests that anaerobic digestion technology should be applied into two periods and combined with electricity production in order to maximin methane generation in the short time and prevent the use of unrenewable fuel. This helps to reduce GHGs emission and actively adapt to climate change in the general trend of the world.

scholarly journals Biochar and Energy Production: Valorizing Swine Manure through Coupling Co-Digestion and Pyrolysis

2020 ◽  
Vol 6 (2) ◽  
pp. 43 ◽  
Author(s):  
Rubén González ◽  
Judith González ◽  
José G. Rosas ◽  
Richard Smith ◽  
Xiomar Gómez
Keyword(s):  
Anaerobic Digestion ◽  
Waste Treatment ◽  
Wide Spectrum ◽  
Swine Manure ◽  
Solid Content ◽  
Electricity Production ◽  
Plant Design ◽  
Heating Value ◽  
High Heating Value ◽  
Bio Oil

Anaerobic digestion is an established technological option for the treatment of agricultural residues and livestock wastes beneficially producing renewable energy and digestate as biofertilizer. This technology also has significant potential for becoming an essential component of biorefineries for valorizing lignocellulosic biomass due to its great versatility in assimilating a wide spectrum of carbonaceous materials. The integration of anaerobic digestion and pyrolysis of its digestates for enhanced waste treatment was studied. A theoretical analysis was performed for three scenarios based on the thermal needs of the process: The treatment of swine manure (scenario 1), co-digestion with crop wastes (scenario 2), and addition of residual glycerine (scenario 3). The selected plant design basis was to produce biochar and electricity via combined heat and power units. For electricity production, the best performing scenario was scenario 3 (producing three times more electricity than scenario 1), with scenario 2 resulting in the highest production of biochar (double the biochar production and 1.7 times more electricity than scenario 1), but being highly penalized by the great thermal demand associated with digestate dewatering. Sensitivity analysis was performed using a central composite design, predominantly to evaluate the bio-oil yield and its high heating value, as well as digestate dewatering. Results demonstrated the effect of these parameters on electricity production and on the global thermal demand of the plant. The main significant factor was the solid content attained in the dewatering process, which excessively penalized the global process for values lower than 25% TS.

Process Simulation of Anaerobic Digestion Process for Municipal Solid Waste Treatment

2018 ◽  
pp. 71-83
Author(s):  
Noorlisa Harun ◽  
Wan Hanisah W. Ibrahim ◽  
Muhamad Faez Lukman ◽  
Muhammad Hafizuddin Mat Yusoff ◽  
Nur Fathin Shamirah Daud ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Process Simulation ◽  
Waste Treatment ◽  
Anaerobic Digestion Process ◽  
Digestion Process ◽  
Solid Waste Treatment

scholarly journals Evaluation of solid waste management system in ‘X’ hospital, Cilegon city, Banten

2018 ◽  
pp. 3
Author(s):  
Linardita Ferial ◽  
Budi Rahayu Kosasih
Keyword(s):  
Waste Management ◽  
Solid Waste ◽  
Management System ◽  
Waste Treatment ◽  
Solid Waste Management ◽  
Medical Waste ◽  
Third Party ◽  
Waste Management System ◽  
Domestic Solid Waste ◽  
Solid Waste Management System

Health service activities by the hospital produce a waste of any activity in the form of medical activities and non-medical activities. The purpose of this research is to analyze the solid waste management system in  'X' Hospital, Cilegon City, Banten. The result showed that the source of solid waste generated were classified into 2 types, namely 2% of medical waste and 98% non medical, where the waste treatment process included sorting, characteristic wastage, transporting garbage to TPS, weighing, temporary storage and transportation. The method of handling solid, B3 and domestic solid waste in 'X' Hospital is done in each unit which is sorting according to its characteristic, but still finding the placement of waste which is not in accordance with its characteristic and solid waste processing process is not done by the hospital but given to a third party. Therefore, it can be concluded that the effort to evaluate the solid waste management of 'X' Hospital must refer to the Decree of the Minister of Health of the Republic of Indonesia Number 1204 / Menkes/ SK / X / 2004 on Hospital Health Requirements and need to improve supervision and good cooperation with nurses and janitors in the separation of medical and non-medical waste.

Anaerobic Digestion or Co-Digestion for Sustainable Solid Waste Treatment/Management

2016 ◽  
pp. 187-232 ◽  
Author(s):  
Sridhar Pilli ◽  
Tanaji T. More ◽  
Song Yan ◽  
Rajeshwar D. Tyagi ◽  
Rao Y. Surampalli ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Solid Waste ◽  
Waste Treatment ◽  
Treatment Management ◽  
Solid Waste Treatment

Methane Generation via Two-Phase Anaerobic Digestion of Organic Fraction of Municipal Solid Wastes

2014 ◽  
Vol 1051 ◽  
pp. 317-321
Author(s):  
Marjorie Baynosa ◽  
Gladys Anne Bondoc ◽  
Leandro Angelo Miguel Sanchez ◽  
Analiza Rollon
Keyword(s):  
Anaerobic Digestion ◽  
Solid Waste ◽  
Solid Wastes ◽  
Small Scale ◽  
Organic Fraction ◽  
Municipal Solid Wastes ◽  
Two Phase ◽  
Methane Generation ◽  
Solids Retention ◽  
Useful Heat

The performance of a small-scale two-phase anaerobic digestion system which processes municipal solid wastes, i.e. vegetable and fruit wastes, was evaluated at mesophilic conditions. An anaerobic digester which required 5 L of fresh cow manure, 5 L of solid waste feed, 5 L each of leachate from the solid waste, and 1 L of anaerobic seeding had been constructed. The volume of the feed solids after digestion has significantly reduced after the operation. The total accumulated methane for a solids retention time (SRT) of 20 days contained useful heat energy amounting to 330.27 KJ.

A novel spatiotemporally anaerobic/semi-aerobic bioreactor for domestic solid waste treatment in rural areas

2019 ◽  
Vol 86 ◽  
pp. 97-105 ◽  
Author(s):  
Zhiyong Han ◽  
Dan Zeng ◽  
Zishen Mou ◽  
Guozhong Shi ◽  
Yu Zhang ◽  
...  
Keyword(s):  
Solid Waste ◽  
Rural Areas ◽  
Waste Treatment ◽  
Solid Waste Treatment ◽  
Domestic Solid Waste

scholarly journals Anaerobic Digestion Performance: Separate Collected vs. Mechanical Segregated Organic Fractions of Municipal Solid Waste as Feedstock

Energies ◽  
2020 ◽  
Vol 13 (15) ◽  
pp. 3768 ◽  
Author(s):  
Przemysław Seruga ◽  
Małgorzata Krzywonos ◽  
Anna Seruga ◽  
Łukasz Niedźwiecki ◽  
Halina Pawlak-Kruczek ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Ph Value ◽  
Renewable Energy Sources ◽  
Production Capacity ◽  
Research Area ◽  
Waste To Energy ◽  
Electricity Production ◽  
Biogas Yield

The replacement of fossil fuel with renewable energy sources seems as though it will be crucial in the future. On the other hand, waste generation increases year by year. Thus, waste-to-energy technologies fit in with the actual trends, such as the circular economy. The crucial type of generated waste is municipal solid waste, which is in the research area. Regarding the organic fraction of municipal solid waste (OFMSW), anaerobic digestion (AD) allows the recovery of biogas and energy. Furthermore, if it is supported by source segregation, it should allow the recovery of material as fertilizer. The AD process performance (biogas yield and stability) comparison of source-segregated OFMSW (ss-OFMWS) and mechanically sorted OFMSW (ms-OFMSW) as feedstocks was performed in full-scale conditions. The daily biogas volume and methane content were measured to assess AD efficiency. To verify the process stability, the volatile fatty acid (VFA) content, pH value, acidity, alkalinity, and dry matter were determined. The obtained biogas yield per ton was slightly higher in the case of ss-OFMSW (111.1 m3/ton), compared to ms-OFMSW (105.3 m3/ton), together with a higher methane concentration: 58–60% and 51–53%, respectively, and followed by a higher electricity production capacity of almost 700 MWh for ss-OFMSW digestion. The obtained VFA concentrations, at levels around 1.1 g/kg, pH values (slightly above 8.0), acidity, and alkalinity indicate the possibilities of the digester feeding and no-risk exploitation of either as feedstock.

scholarly journals Feasibility assessment of anaerobic digestion technologies for household wastes in Vietnam

2016 ◽  
Vol 7 (1) ◽  
pp. 1-8 ◽  
Author(s):  
Rodolfo Daniel Silva ◽  
Hung Anh Le ◽  
Konrad Koch
Keyword(s):  
Anaerobic Digestion ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Waste Treatment ◽  
Ghg Emissions ◽  
Holistic Approach ◽  
Small Scale ◽  
Viet Nam ◽  
Feasibility Assessment ◽  
Composting Facility

Anaerobic digestion technologies have been utilized in Vietnam for more than 30 years with thousands of domestic small scale plants, mostly for agricultural and livestock wastes. For municipal solid waste (MSW) the development of biogas plants is far below the current high waste generation rates. The aim of this paper is to present the results of a feasibility assessment of implementing AD to treat the organic fraction of municipal solid waste (OFMSW) in Vietnam. For this purpose, an environmental analysis was performed comparing three treatment scenarios: two hypothetical AD technologies (a wet and a dry fermentation system) and the existing industrial composting facility at Nam Binh Duong Waste Treatment Complex in South Vietnam. This study sought for the technology to recover the most possible resources and energy from the OFMSW, and reduce greenhouse gas (GHG) emissions. The results were then combined with a policy review to support a holistic approach on the feasibility of these technologies in Vietnam. The outcome indicates that by implementing the dry AD system, up to 16.7 GWh of power and 14.4 GWh of heat energy can be generated annually and it can potentially save up to 5,400 Mg of CO2 equivalent per year, presenting the highest resource/energy benefits. The performance of the wet system and composting facility present some advantages particularly if there is a previous segregation of the organic material from the rest of the household wastes. Moreover, current reforms in Vietnam demonstrate the government’s interest in AD technologies, translated into the development of fiscal and financial revenues which incentivize participation from the public and private sector. Finally, these technologies are constantly under development and have the potential to be further improved, which gives hopes that waste treatment systems can be optimized to meet the waste and energy challenges of the future generations. Phương pháp lên men kị khí đã được áp dụng tại Việt Nam từ hơn 30 năm nay với hàng nghìn các công trình nhỏ chủ yếu xử lý chất thải nông nghiệp và chăn nuôi. Sự phát triển hiện nay của các nhà máy sinh khí biogas còn quá ít cho xử lý lượng phát thải cao rác thải đô thị. Bài báo này trình bày các kết quả việc đánh giá tính khả thi khi áp dụng công nghệ lên men kị khí xử lý phần hữu cơ của chất thải rắn đô thị tại Việt Nam. Với mục đích này, phân tích môi trường được thực hiện để so sánh ba kịch bản xử lý: hai công nghệ lên men kị khí giả định (một cho công nghệ lên men ướt và một cho công nghệ lên men khô) và nhà máy hiện hữu lên men hiếu khí làm phân bón compost tại khu liên hợp xử lý chất thải Nam Bình Dương ở miền Nam Việt Nam. Nghiên cứu này tìm kiếm giải pháp công nghệ để thu hồi nhiều nhất có thể các tài nguyên và năng lượng từ rác thải đô thị và và giảm phát thải khí nhà kính. Các kết quả sau đó được kết hợp với đánh giá chính sách để hỗ trợ cách tiếp cận toàn diện về tính khả thi của các công nghệ này vào Việt Nam. Kết quả cho thấy áp dụng công nghệ lên men kị khí khô có thể tạo ra đến 16,7 GWh điện năng và 14,4 GWh nhiệt năng hàng năm và có khả năng làm giảm đến 8,000 Mg CO2 tương đương mỗi năm, thể hiện lợi ích cao nhất giữa tài nguyên và năng lượng. Hiệu suất của hệ thống lên men kị khí ướt và lên men hiếu khí thể hiện một số lợi thế đặc biệt khi nguyên liệu hữu cơ cho quá trình lên men được tiền phân loại ra khỏi hỗn hợp rác sinh hoạt. Hơn nữa, các đổi mới hiện nay ở Việt Nam thể hiện sự quan tâm của Chính phủ đến các công nghệ lên men kị khí, thể hiện qua sự tăng trưởng tài chính và doanh thu để khuyến khích sự tham gia của khu vực công và tư nhân. Chắc chắn rằng các công nghệ sẽ liên tục được phát triển và có khả năng được cải tiến tốt hơn, mang đến cho chúng ta những hy vọng rằng các hệ thống xử lý chất thải được tối ưu hóa để đáp ứng được các thách thức về chất thải và năng lượng của các thế hệ tương lai.

scholarly journals Circulation of Leachate Organic Solid Waste in Fixed Bed Reactor with Pressure Swing Absorption Technology

2018 ◽  
Vol 73 ◽  
pp. 05002
Author(s):  
Hartati Etih ◽  
Nurul Amaliyah Ikrima ◽  
Salafudin
Keyword(s):  
Anaerobic Digestion ◽  
Solid Waste ◽  
Waste Treatment ◽  
Fixed Bed ◽  
Fixed Bed Reactor ◽  
Renewable Fuels ◽  
Organic Solid Waste ◽  
Organic Solid ◽  
Solid Waste Treatment ◽  
Pressure Swing

Treatment of solid waste that can be applied to reduce solid waste into the landfill is the treatment of organic solid waste into a biogas. The largest component of biogas is CH4 and CO2 Alternative organic solid waste treatment is anaerobic digestion, besides reducing waste, this process can also produce renewable fuels. This research processed the leachate organic solid waste from Itenas cafetaria using fixed bed reactor. Volume reactor 180 liters with sponge filter media. An increase the concentration gas CH4 conducted using pressure swing absorption technology with pressure 1 bar on the reactor metanogen and -0,01 bar on stripper. Variation circulation a substrate for 0,30, 0,32, and 0,33 circulation per hour. Parameter measured are COD, TVA, pH, temperature, alkalinitas, and CO2, CH4. The result of this research obtained gas CH4 highest concentration of 90 % in a gas holder metanogen, and the highest CO2 24,36 % in a gas holder stripper on volumetric 0,33 circulation/hours.

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