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All Journal Journal of Earth and Marine Technology (JEMT) International Journal of Science and Environment
Prasetyaningtyas, Dyan
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Energy Mathematics Physics Transportation

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Analysis of Waste Management and Greenhouse Gas Emission Reduction (Case Study: Adiwiyata School SMPN 18 Surabaya and Non-Adiwiyata School SMPN 31 Surabaya) Bhakti, Wahyu Satria; Ni'am, Achmad Chusnun; Nurbia, Nurbia; Prasetyaningtyas, Dyan
Journal of Earth and Marine Technology (JEMT) Vol 4, No 2 (2024)
Publisher : Lembaga Penelititan dan Pengabdian kepada Masyarakat - Institut Teknologi Adhi Tama Suraba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jemt.2024.v4i2.5960

Abstract

In Surabaya, a city program named "Perilaku dan Berbudaya Lingkungan Hidup di Sekolah" (PBLHS), or Environmental Behavior and Culture in Schools, specifically targets Adiwiyata schools to promote sustainable practices. However, not all schools participate in this initiative. Non-Adiwiyata schools typically send their waste to the Final Waste Processing Site (TPA), which exacerbates the load on these facilities and contributes to increased greenhouse gas (GHG) emissions. This study aims to compare waste management and GHG reduction efforts between Adiwiyata and non-Adiwiyata schools in Surabaya. We conducted sampling at one Adiwiyata school and one non-Adiwiyata school, analyzing waste generation and management strategies using the SNI 19-3964-1994 method. Our findings reveal that Adiwiyata schools generate less waste, with an average of 0.0103 kg/person/day, compared to 0.0155 kg/person/day at non-Adiwiyata schools. Furthermore, the organic waste composition was significantly lower in Adiwiyata schools at 2.08%, versus 33% in non-Adiwiyata schools. Methane (CH4) emissions from Adiwiyata schools were also lower, measuring 0.123 Gg/year, as opposed to 0.405 Gg/year from non-Adiwiyata schools. These disparities in waste output, organic waste composition, and GHG emissions are significantly influenced by the environmental knowledge, attitudes, and practices within the school communities.
Study of The Effectiveness of Integrating Adaptation and Mitigation Actions To The Impacts of Climate Change In Coastal Areas: A Case Study of Botanical Gardens Surabaya Mangroves Prasetyaningtyas, Dyan; Fitri Purwanti, Ipung
International Journal of Science and Environment (IJSE) Vol. 5 No. 4 (2025): November 2025
Publisher : CV. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijse.v5i4.269

Abstract

Climate change has led to an increased risk of abrasion, tidal flooding, and ecosystem degradation in coastal areas, particularly in urban areas such as Surabaya. The Surabaya Mangrove Botanical Garden (KRMS) serves as an ecosystem-based conservation area that also plays a crucial role in climate change mitigation through carbon sequestration and protection against extreme climate impacts. This study aims to assess the effectiveness of integrating adaptation and mitigation actions in KRMS based on three main aspects: technical, social, and institutional. The research approach uses a combination of quantitative and qualitative methods, using the Analytic Hierarchy Process (AHP) method to assess expert perceptions and Structural Equation Modeling (SEM) to analyze community perceptions. Vegetation analysis was conducted using the Normalized Difference Vegetation Index (NDVI) for the period 2015–2025. The results show an increase in the NDVI value from 0.21 (2015) to 0.63 (2025), indicating successful vegetation rehabilitation and improved ecosystem quality. AHP shows that the social aspect has the highest weighting (0.3712), followed by the technical aspect (0.3228) and the institutional aspect (0.3059). SEM results show that institutional (β = 0.557; p < 0.001) and technical (β = 0.251; p = 0.0079) aspects significantly influence the effectiveness of integration, while social aspects are not statistically significant. This study concludes that the effectiveness of adaptation and mitigation integration in KRMS depends on the synergy between these aspects. Strengthening institutional governance, increasing community ecological literacy, and optimizing the function of mangrove vegetation as blue carbon are the keys to adaptive and sustainable coastal area management.
Co-Authors Achmad Chusnun Ni'am Bhakti, Wahyu Satria Fitri Purwanti, Ipung Nurbia, Nurbia