Ecological, energetic and economic comparison of anaerobic digestion with different competing technologies to treat biogenic wastes

2000 ◽  
Vol 41 (3) ◽  
pp. 263-273 ◽  
Author(s):  
W. Edelmann ◽  
K. Schleiss ◽  
A. Joss

In order to get more detailed information for better decision making in future biogenic waste treatment, different processes to treat biogenic wastes in plants with a treating capacity of 10,000 tons of organic household wastes per year were compared. The comparison included life cycle assessments as well as economic considerations for different treating methods. Measurements on compost plants showed that methane emissions are higher than estimated so far. With the tools ECOINDICATOR and UBP anaerobic digestion shows to be advantageous as compared to composting, incineration or combination of digestion and composting, mainly because of a better energy balance. In fully enclosed, professional treatment plants, the specific biotechnological treatment costs are in the range of about 150.-sFr/ton for aerobic, anaerobic and combined technologies. It can be concluded, that anaerobic processes will become considerably more important in the future mainly for ecological reasons.

2005 ◽  
Vol 52 (1-2) ◽  
pp. 203-208 ◽  
Author(s):  
W. Edelmann ◽  
U. Baier ◽  
H. Engeli

In order to obtain more detailed information for better decision making in future biogenic waste treatment, different processes to treat biogenic wastes in plants with a treatment capacity of 10,000 tons of organic household wastes per year as well as agricultural codigestion plants were compared by life cycle assessments (LCA). With the tool EcoIndicator, anaerobic digestion is shown to be advantageous as compared to composting, incineration or a combination of digestion and composting, mainly because of a better energy balance. The management of the liquid manure in agricultural codigestion of organic solid wastes causes increased gaseous emissions, which have negative effects on the LCA, however. It is recommended to cover the slurry pit and to use an improved manure management in order to compensate for the additional gaseous emissions. In the LCAs, the quality of the digester output could only be taken into account to a small extent; the reasons are discussed.


Energy ◽  
2011 ◽  
Vol 36 (5) ◽  
pp. 3022-3029 ◽  
Author(s):  
Wen-Hsien Tsai ◽  
Sin-Jin Lin ◽  
Jau-Yang Liu ◽  
Wan-Rung Lin ◽  
Kuen-Chang Lee

2021 ◽  
Vol 22 (2) ◽  
pp. 147-161
Author(s):  
Rahmah Arfiyah Ula ◽  
Agus Prasetya ◽  
Iman Haryanto

ABSTRACT The primary municipal waste treatment in Tuban Regency, East Java, was landfilling, besides the small amount of the waste was turned to compost. Landfilling causes global warming, which leads to climate change due to CH4 emission. This environmental impact could be worst by the population growth that increases the amount of waste. This study aimed to evaluate the environmental impact on waste management in the Gunung Panggung landfill in Tuban Regency and its alternative scenarios using Life Cycle Assessment (LCA). Four scenarios were used in this study. They are one existing scenario and three alternative scenarios comprising landfilling, composting, and anaerobic digestion. The scope of this study includes waste transportation to waste treatment which is landfilling, composting, and anaerobic digestion (AD). The functional unit of this analysis is per ton per year of treated waste. Environmental impacts selected are global warming potential, acidification potential, and eutrophication potential. The existing waste management in Gunung Panggung landfill showed the higher global warming potential because of the emission of CO2 and cost for human health, which is 6.379.506,17 CO2 eq/year and 5,92 DALY, respectively. Scenario 3 (landfilling, composting, and AD; waste sortation 70%) showed a lower environmental impact than others, but improvements were still needed. Covering compost pile or controlling compost turning frequency was proposed for scenario 3 amendment. Keywords: environmental impact, landfill, life cycle assessment, waste management   ABSTRAK Landfill merupakan pengelolaan sampah utama di tempat pemrosesan akhir (TPA) Gunung Panggung Kabupaten Tuban. Selain landfill, pengomposan diterapkan untuk mengolah sebagian kecil sampahnya. Landfill menghasilkan gas metana yang menyebabkan pemanasan global dan memicu perubahan iklim. Pertambahan penduduk memperbanyak sampah yang perlu diolah di TPA dan dapat memperparah dampak lingkungan yang ditimbulkan. Tujuan penelitian ini adalah menilai dampak lingkungan dari pengelolaan sampah eksisting di TPA Gunung Panggung Kabupaten Tuban Jawa Timur beserta skenario alternatifnya menggunakan Life Cycle Assessment (LCA). Terdapat satu skenario eksisting dan tiga skenario alternatif pengelolaan sampah yaitu landfilling, pengomposan, dan fermentasi anaerob (anaerobic digestion). Ruang lingkup studi meliputi pengangkutan sampah, pengelolaan sampah dengan cara pengomposan, Anaerobic Digestion (AD), dan landfill. Satuan fungsional yang digunakan yakni ton sampah yang diolah per tahun. Dampak lingkungan yang dipelajari di antaranya: pemanasan global, asidifikasi, dan eutrofikasi. Dampak lingkungan skenario eksisting menunjukkan nilai tertinggi terutama pada pemanasan global (6.379.506,17 CO2eq/tahun) dan kerugian pada kesehatan manusia (5,92 DALY). Skenario alternatif 3, yang meliputi pengelolaan secara landfill, pengomposan, dan AD menunjukkan dampak lingkungan yang kecil, namun memerlukan perbaikan. Perbaikan untuk skenario 3 yaitu dengan menambahkan penutup pada tumpukan kompos atau mengontrol frekuensi pembalikan kompos untuk mengurangi emisi NH3. Kata kunci: dampak lingkungan, life cycle assessment, pengelolaan sampah, tempat pemrosesan akhir


2020 ◽  
Vol 1 (1) ◽  
pp. 1-9
Author(s):  
Abdulmannan Rouhani

Today, the production of various types of solid waste and the occurrence of related social, economic and environmental inconsistencies have faced the management of municipal services and waste with many problems in the areas of collection, transportation, processing and disposal of such waste. The purpose of this study is to assess the life cycle of the current management system in Yazd, Iran from the environmental and economic point of view and to determine the priority in the decision-making to improve waste management. There are many tools for assessing the environmental impacts and determining the priority in the decision-making, but one of the widely used methods is life cycle assessment (LCA). In this study, three different scenarios of waste management were defined. The first scenario is the unsanitary separation and landfill (according to current situation in Yazd), the second scenario is the separation, composting and anaerobic digestion, waste incineration plant, disposal of residues and ash in sanitary landfill, and the third scenario is the separation, composting and anaerobic digestion, and sanitary landfill. Then, using the Integrated Waste Management (IWM-2) software, the inventory of the environmental and economic burden of each scenario was analyzed and presented. In general, the assessment of Yazd municipal waste life cycle was performed to achieve the optimal scenario that has less environmental and economic burden. The third scenario was selected as the best management option in this respect.


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