Life Cycle Assessment of a Novel Zero Organic-Waste Model Using the Integrated Anaerobic Digester and Oxidation-Ditch Membrane Bioreactor for High-rise Building Application

2021 ◽  
Author(s):  
Arpapan Satayavibul ◽  
Chavalit Ratanatamskul
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Membrane Bioreactor ◽  
Organic Waste ◽  
Anaerobic Digester ◽  
Oxidation Ditch ◽  
High Rise ◽  
High Rise Building

Low-cost anaerobic digester to promote the circular bioeconomy in the non-centrifugal cane sugar sector: A life cycle assessment

2021 ◽  
Vol 326 ◽  
pp. 124783
Author(s):  
O. Mendieta ◽  
Liliana Castro ◽  
Humberto Escalante ◽  
Marianna Garfí
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Low Cost ◽  
Cane Sugar ◽  
Anaerobic Digester

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.

Environmental Life-Cycle Assessment and Life-Cycle Cost Analysis of a High-Rise Mass Timber Building: A Case Study in Pacific Northwestern United States

2021 ◽  
Vol 13 (14) ◽  
pp. 7831
Author(s):  
Shaobo Liang ◽  
Hongmei Gu ◽  
Richard Bergman
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Cost Analysis ◽  
Life Cycle Cost ◽  
Impact Category ◽  
Life Cycle Cost Analysis ◽  
Floor Area ◽  
High Rise ◽  
Concrete Building ◽  
Mass Timber

Global construction industry has a huge influence on world primary energy consumption, spending, and greenhouse gas (GHGs) emissions. To better understand these factors for mass timber construction, this work quantified the life cycle environmental and economic performances of a high-rise mass timber building in U.S. Pacific Northwest region through the use of life-cycle assessment (LCA) and life-cycle cost analysis (LCCA). Using the TRACI impact category method, the cradle-to-grave LCA results showed better environmental performances for the mass timber building relative to conventional concrete building, with 3153 kg CO2-eq per m2 floor area compared to 3203 CO2-eq per m2 floor area, respectively. Over 90% of GHGs emissions occur at the operational stage with a 60-year study period. The end-of-life recycling of mass timber could provide carbon offset of 364 kg CO2-eq per m2 floor that lowers the GHG emissions of the mass timber building to a total 12% lower GHGs emissions than concrete building. The LCCA results showed that mass timber building had total life cycle cost of $3976 per m2 floor area that was 9.6% higher than concrete building, driven mainly by upfront construction costs related to the mass timber material. Uncertainty analysis of mass timber product pricing provided a pathway for builders to make mass timber buildings cost competitive. The integration of LCA and LCCA on mass timber building study can contribute more information to the decision makers such as building developers and policymakers.

scholarly journals ANALISIS DAMPAK PENCEMARAN LINGKUNGAN DENGAN METODE LIFE CYCLE ASSESSMENT (LCA) PADA INSTALASI PENGOLAHAN AIR LIMBAH (IPAL) PT. SURABAYA INDUSTRIAL ESTATE RUNGKUT (SIER) SURABAYA

EnviroUS ◽  
2021 ◽  
Vol 1 (2) ◽  
pp. 120-128
Author(s):  
Hanugrah Sinedyo Yekti ◽  
Mohammad Mirwan
Keyword(s):  
Global Warming ◽  
Life Cycle Assessment ◽  
Renewable Energy ◽  
Life Cycle ◽  
Impact Category ◽  
Oxidation Ditch ◽  
Industrial Estate

Pada proses pengolahan air limbah industri, unit pengolahan limbah berpotensi menimbulkan pencemaran terhadap lingkungan. PT Surabaya Industrial Estate Rungkut (SIER) merupakan perusahaan pengelola kawasan industri di Kota Surabaya, dan tertua di Indonesia. PT SIER memiliki pusat pegolahan air limbah yang dapat mengolah dan menetralisir limbah industri dan rumah tangga yang dihasilkan oleh pabrik di kawasan industri sehingga aman disalurkan ke Sungai Tambak Oso. Proses pengolahan air limbah industri dengan kontribusi terbesar dalam menimbulkan dampak yaitu pada unit proses Distribution Box, Clarifier Utara, Clarifier Selatan, Oxidation Ditch I, II, III, IV. Oleh karena itu, perlu dilakukan strategi alternatif untuk mengurangi beban emisi yang dihasilkan dari proses pengolahan. Melalui metode Life Cycle Assessment (LCA) dapat menganalisis dampak lingkungan, yaitu perubahan apapun yang terjadi pada lingkungan, seluruhnya atau sebagian disebabkan oleh aspek lingkungan. Pada analisis ini menggunakan pendekatan gate to gate dengan SimaPro 9.1.0.11. dengan metode analisis dampak IMPACT 2002+ sehingga mendapatkan hasil sesuai dengan tujuan dan mendekati dengan keadaan yang terjadi di lingkungan instalasi pengolahan air limbah PT.SIER. Data yang dianalisis dalam penelitian ini menggunakan data beban pencemar air limbah per hari. Diperoleh impact category terbesar dari hasil analisis ini yaitu respiratory inorganics 0,334 DALY, global warming sebesar 252000 kg CO2 eq, non-renewable energy sebesar 3730000 MJ. Alternatif program perbaikan yang dapat dilakukan  untuk menurunkan dampak lingkungan yang dihasilkan oleh proses pengolahan air limbah yaitu pengolahan gas metan dengan digestasi anaerobik, pembuatan lahan terbuka hijau, dan pemantauan berkala dan pembaruan pada perangkat unit instalasi.

Environmental assessment of low-organic waste landfill scenarios by means of life-cycle assessment modelling (EASEWASTE)

2009 ◽  
Vol 28 (2) ◽  
pp. 130-140 ◽  
Author(s):  
Simone Manfredi ◽  
Thomas H. Christensen ◽  
Heijo Scharff ◽  
Joeri Jacobs
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Environmental Assessment ◽  
Organic Waste ◽  
Waste Landfill
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