Life Cycle Assessment of Anaerobic Digestion Systems: An Approach Towards Sustainable Waste Management

2022 ◽  
pp. 391-414
Author(s):  
Marlia M. Hanafiah ◽  
Iqbal Ansari ◽  
Kalppana Chelvam
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Anaerobic Digestion ◽  
Waste Management ◽  
Sustainable Waste Management

scholarly journals Life Cycle Assessment of Bioplastics and Food Waste Disposal Methods

2021 ◽  
Vol 13 (12) ◽  
pp. 6894
Author(s):  
Shakira R. Hobbs ◽  
Tyler M. Harris ◽  
William J. Barr ◽  
Amy E. Landis
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Anaerobic Digestion ◽  
Waste Management ◽  
Food Waste ◽  
Energy Demand ◽  
Anaerobic Digester ◽  
Management Scenarios ◽  
Cumulative Energy ◽  
Cumulative Energy Demand

The environmental impacts of five waste management scenarios for polylactic acid (PLA)-based bioplastics and food waste were quantified using life cycle assessment. Laboratory experiments have demonstrated the potential for a pretreatment process to accelerate the degradation of bioplastics and were modeled in two of the five scenarios assessed. The five scenarios analyzed in this study were: (1a) Anaerobic digestion (1b) Anaerobic digestion with pretreatment; (2a) Compost; (2a) Compost with pretreatment; (3) Landfill. Results suggested that food waste and pretreated bioplastics disposed of with an anaerobic digester offers life cycle and environmental net total benefits (environmental advantages/offsets) in several areas: ecotoxicity (−81.38 CTUe), eutrophication (0 kg N eq), cumulative energy demand (−1.79 MJ), global warming potential (0.19 kg CO2), and human health non-carcinogenic (−2.52 CTuh). Normalized results across all impact categories show that anaerobically digesting food waste and bioplastics offer the most offsets for ecotoxicity, eutrophication, cumulative energy demand and non-carcinogenic. Implications from this study can lead to nutrient and energy recovery from an anaerobic digester that can diversify the types of fertilizers and decrease landfill waste while decreasing dependency on non-renewable technologies. Thus, using anaerobic digestion to manage bioplastics and food waste should be further explored as a viable and sustainable solution for waste management.

scholarly journals Life Cycle Assessment (LCA) Pengelolaan Sampah di TPA Gunung Panggung Kabupaten Tuban, Jawa Timur

2021 ◽  
Vol 22 (2) ◽  
pp. 147-161
Author(s):  
Rahmah Arfiyah Ula ◽  
Agus Prasetya ◽  
Iman Haryanto
Keyword(s):  
Global Warming ◽  
Life Cycle Assessment ◽  
Life Cycle ◽  
Anaerobic Digestion ◽  
Environmental Impact ◽  
Waste Management ◽  
Global Warming Potential ◽  
Waste Treatment ◽  
Acidification Potential ◽  
Alternative Scenarios

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

scholarly journals Environmental assessment of different municipal waste management methods with approach to life cycle assessment (Case study: Yazd, Iran)

2020 ◽  
Vol 1 (1) ◽  
pp. 1-9
Author(s):  
Abdulmannan Rouhani
Keyword(s):  
Decision Making ◽  
Life Cycle Assessment ◽  
Life Cycle ◽  
Anaerobic Digestion ◽  
Waste Management ◽  
Economic Burden ◽  
Municipal Waste ◽  
Sanitary Landfill ◽  
Economic Point ◽  
The Third

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.

Life Cycle Assessment of Municipal Solid Waste Management for Dhulikhel Municipality, Nepal

2021 ◽  
pp. 1-9
Author(s):  
Sambuddha Bajracharya ◽  
Awanish Adhikari ◽  
Prasesh Pote Shrestha ◽  
Anish Ghimire
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Anaerobic Digestion ◽  
Waste Management ◽  
Solid Waste ◽  
Environmental Impacts ◽  
Biological Treatment ◽  
Solid Waste Management ◽  
Health Concern ◽  
Municipal Solid Waste Management

Solid Waste Management (SWM) is becoming a major environmental and public health concern in emerging municipalities in Nepal. In this study, the life cycle assessment (LCA) approach is used to address the environmental impacts of potential waste treatment scenarios in Dhulikhel Municipality in Nepal. The assessment was based on four different scenarios, viz. Scenario 1- landfilling, Scenario 2 - composting combined with landfilling, Scenario 3 - recycling, composting and landfilling, and Scenario 4 - recycling, anaerobic digestion, and landfilling. The LCA methodology was developed, including the benefits and impact potentials of different unit process in each scenario, also taking consideration of emissions from energy use. The environmental impacts from the scenarios were compared in terms of Global Warming Potential (GWP), Acidification Potential (AP), and Eutrophication Potential (EP). Among the four scenarios, scenario 4 (i.e. with anaerobic digestion) showed the most environmental advantage. Scenarios without biological treatment facilities are the least preferred option as their impact is significantly greater than other options. Therefore, organic waste is recommended not to be disposed of in landfill sites even if the transportation activity increases, because the magnitude of methane avoidance increases with an increased amount of waste diversion to the biological treatment units.

Life cycle assessment of ship-generated waste management of Luka Koper

2009 ◽  
Vol 29 (12) ◽  
pp. 3036-3046 ◽  
Author(s):  
Stefano Zuin ◽  
Elvis Belac ◽  
Boris Marzi
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Waste Management
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