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All Journal International Journal of Public Health Science (IJPHS) International Journal of Evaluation and Research in Education (IJERE) JURNAL ILMIAH PLATAX Jurnal Kesehatan Lingkungan indonesia Jurnal Periodic Jurusan Kimia UNP Jurnal Kesehatan Masyarakat Jurnal Kesehatan Andalas Journal of Degraded and Mining Lands Management SEMIRATA 2015 Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Preventif: Jurnal Kesehatan Masyarakat Jurnal Penelitian Kesehatan Suara Forikes INVOTEK: Jurnal Inovasi Vokasional dan Teknologi Promotif: Jurnal Kesehatan Masyarakat Sumatra Journal of Disaster, Geography and Geography Education Jurnal Penelitian Pendidikan IPA (JPPIPA) JURNAL PENDIDIKAN TAMBUSAI Jurnal Kelautan Nasional International Journal of Educational Dynamics (IJEDS) Global Conference Index Menara Ilmu Jurnal Pembangunan Nagari Pelita Eksakta Sainstek : Jurnal Sains dan Teknologi Science and Environmental Journals for Postgraduate Natural Science: Jurnal Penelitian Bidang IPA dan Pendidikan IPA Teknomekanik AEEJ : Journal of Automotive Engineering and Vocational Education PRIMER (Prima Medical Journal) Dinamika Lingkungan Indonesia Jurnal Pijar MIPA Maritime Park: Journal Of Maritime Technology and Socienty MASALIQ: Jurnal Pendidikan dan Sains Jurnal Pengabdian Pada Masyarakat Jurnal Kependudukan dan Pembangunan Lingkungan (JKPL) Journal of Multidisciplinary Science: MIKAILALSYS Gudang Jurnal Multidisiplin Ilmu Ta'dib Asian Journal of Science, Technology, Engineering, and Art Al-Ihtiram: Multidisciplinary Journal of Counseling and Social Research Economics Development Analysis Journal Jurnal Pendidikan MIPA Journal of Current Research in Humanities, Social Sciences, and Business Kesmas: Jurnal Kesehatan Masyarakat Nasional (National Public Health Journal) Preventif : Jurnal Kesehatan Masyarakat COUNS-EDU: The International Journal of Counseling and Education
Indang Dewata
Universitas Negeri Padang
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Efektivitas Kitosan Cangkang Kepiting (Scylla serrata) sebagai Koagulan untuk Mengurangi Mikroplastik Polistirena (PS) dalam Air Limbah Jheni Sriayu Latifa; Indang Dewata
MASALIQ Vol 5 No 4 (2025): JULI
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/masaliq.v5i4.6765

Abstract

Microplastic pollution in wastewater has become an urgent environmental issue due to its resistance to degradation and its potential to contaminate the food chain. This study aims to develop a natural coagulant based on chitosan extracted from the waste shells of Scylla serrata (blue swimming crab) as an eco-friendly solution for precipitating polystyrene (PS) microplastics in wastewater. Chitosan was obtained through demineralization, deproteinization, and deacetylation processes, and its effectiveness was tested in a solution containing 50 mg of pure PS microplastics in 250 ml of wastewater. The results showed that the optimum pH for coagulation was 5, achieving a removal efficiency of 98.4%. The optimal chitosan concentration was 0.5%, resulting in a 97.6% removal rate, while the optimal stirring speed of 700 rpm yielded an efficiency of 89.2%. These findings indicate that chitosan derived from crab shell waste is an effective and sustainable coagulant for mitigating microplastic pollution and holds promising potential for application in environmentally friendly wastewater treatment.
Pengaruh pH terhadap Koagulasi Mikroplastik Polyethylene Terephthalate (PET) menggunakan Kitosan dari Cangkang Kepiting (Scylla serrata) Haflatul HudaAli; Indang Dewata
MASALIQ Vol 5 No 4 (2025): JULI
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/masaliq.v5i4.6875

Abstract

Polyethylene Terephthalate (PET) microplastics are among the primary contaminants in aquatic environments and pose potential risks to human health. Coagulation is an effective method for reducing microplastics; however, conventional coagulants such as alum may leave harmful residues. This study aims to evaluate the effectiveness of chitosan synthesized from crab shell waste (Scylla serrata) as an eco-friendly biocoagulant in the coagulation of PET microplastics. Chitosan synthesis was carried out through three stages: demineralization, deproteinization, and deacetylation. The coagulation process was conducted under varying pH conditions (3, 5, 7, 9, and 11), with a chitosan dosage of 500 mg/L and a sedimentation time of 45 minutes. The results show that optimal conditions were achieved at pH 7, with microplastic removal efficiency reaching 98.4%. Characterization using Fourier Transform Infrared Spectroscopy (FTIR), Particle Size Analyzer (PSA), and stereo microscopy confirmed successful floc formation and active interaction between chitosan and microplastics. The study concludes that chitosan derived from crab shell waste has strong potential as an effective and environmentally friendly alternative coagulant for treating water contaminated with microplastics.
Kondisi Optimum pH Larutan dan Kecepatan Pengadukan dalam Mengidentifikasi Mikroplastik Jenis PET Menggunakan Kitosan dari Cangkang Kepiting (Scylla serrata) Nurila Rati; Indang Dewata
MASALIQ Vol 5 No 6 (2025): NOVEMBER
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/masaliq.v5i6.7720

Abstract

This study aims to determine the optimal pH and stirring speed for the identification and removal of polyethylene terephthalate (PET) microplastics using chitosan extracted from crab shell waste (Scylla serrata) through the coagulation method. The chitosan extraction process involved demineralization, deproteinization, and deacetylation stages. Subsequently, the extracted chitosan was applied as a coagulant in a solution containing PET microplastics under various pH levels and stirring speeds. The results indicate that chitosan derived from crab shell waste is effective in reducing microplastic concentrations, achieving a removal efficiency of 97.30% under optimal conditions of pH 6 and a stirring speed of 250 rpm. These findings highlight the significant potential of utilizing marine waste as an eco-friendly natural biopolymer in microplastic wastewater treatment. This research contributes to the advancement of sustainable biopolymer-based waste treatment technologies and supports efforts to mitigate microplastic pollution in aquatic environments.
Efektivitas Kitosan Cangkang Kepiting sebagai Biokoagulan Mikroplastik Polistirena (PS) dalam Air Limbah Afdal Ilahi; Indang Dewata
MASALIQ Vol 5 No 6 (2025): NOVEMBER
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/masaliq.v5i6.7818

Abstract

This study is motivated by the limited research on the use of natural biocoagulants for microplastic removal, despite the significant environmental and human health impacts of this phenomenon. The aim of this research is to analyze the influence of pH variation, chitosan dosage, and settling time on the coagulation effectiveness of polystyrene (PS) microplastics, and to determine the process's optimum conditions. A quantitative method was employed, using PS microplastic solution samples (30 mg/L) treated under varying pH levels (4–10), chitosan doses (10–50 mg/L), and settling times (10–50 minutes). Data were collected through laboratory experiments and analyzed using Fourier Transform Infrared (FTIR) spectroscopy and stereo microscopy. The results indicate that optimum conditions were achieved at pH 6, with a chitosan dose of 30 mg/L and a settling time of 30 minutes, resulting in microplastic removal efficiency exceeding 90%. These findings support the theory of electrostatic interactions between the amine groups in chitosan and the negatively charged surface of microplastics. The main conclusion is that crab shell-derived chitosan is effective as an environmentally friendly biocoagulant for reducing microplastic content in wastewater. The study contributes to the growing literature on biocoagulation and offers practical recommendations for wastewater treatment managers to adopt sustainable natural coagulants. Moreover, it opens avenues for future research on chitosan-based composites for treating various types of microplastics.
Rekomendasi Kebijakan untuk Pengelolaan Sampah Kota Padang Berbasis Pengelolaan Komunal dan Terintegrasi Durain Parmanoan; Aldri Frinaldi; Anni Faridah; Erianjoni Erianjoni; Indang Dewata; Nasfryzal Carlo; Fajar Agung Mulia; Kuntum Khoiro Ummatin; Izzati Winda Murti; Dwi Annisa Fithry
Jurnal Pembangunan Nagari Vol 11 No 1 (2026)
Publisher : Badan Penelitian and Pengembangan (Balitbang), Padang, West Sumatra, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30559/jpn.v6i11.532

Abstract

Waste management in Padang City is currently facing a critical phase with the Air Dingin Landfill predicted to reach full capacity in 2026 and having a worrying Environmental Risk Index (IRL). This problem is exacerbated by a large fiscal shortfall, where the regional budget allocation is far less than the ideal requirement of IDR 133 billion per year. This study aims to evaluate the effectiveness of waste policies and formulate a communal-based integrated management strategy as a sustainable solution. The research method uses a qualitative approach through literature studies, a review of Regional Regulation Number 21 of 2012 and flagship government programs such as “Padang Bagoro” and “Padang Mamilah”, as well as secondary data analysis of waste management data (SIPSN). The results of the analysis indicate a functional gap between seasonal social participation and low sorting behavior at source, as well as weak law enforcement due to limited supervisory personnel. This study recommends policy restructuring through a communal-scale management approach (RT-RW) that maximizes communal management and integration with the sub-district Waste Management Institution (LPS) and industrial sector to reduce the logistical burden and extend the technical life of the landfill.
NOx Content Analysis In Ambient Air: Public Policy Perspectives And Implications For Sustainable Development In Padang City Donny Fernandez; Genius Umar; Indang Dewata; Syamsul Amar; Ahmad Juanda
AEEJ : Journal of Automotive Engineering and Vocational Education Vol 6 No 2 (2025): Vol 6 No 2 (2025) : AEEJ : Journal of Automotive Engineering and Vocational Educa
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/aeej.v6i2.291

Abstract

This paper presents data from the ambient air quality monitoring of Padang City and its implications for sustainable development public policy. Urban growth and transportation and industrial activities have the potential to increase nitrogen gas emissions. Air monitoring was conducted at strategic locations in Padang City that represent anthropogenic activities. The nitrogen gas concentration data obtained were analyzed descriptively and spatially to identify the level of pollutants in the air. Monitoring results were linked to sustainable development indicators, particularly those related to public health (SDG 3) and cities and settlements (SDG 11). This paper aims to provide input for policy makers to strategize the sustainable development of Padang city.
Integrating Circular Economies: Enhancing Border Regions Environment and Public Health Aloysius Hari Kristianto; Yuliana; Eddy Suratman; Akhmad Yani; Indang Dewata
Economics Development Analysis Journal Vol. 13 No. 3 (2024): Economics Development Analysis Journal
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/edaj.v13i3.8202

Abstract

The circular economy represents a groundbreaking economic model that transforming waste into valuable products, potentially benefiting regional and national economies. This research explores the correlation between household waste management and its impact on environmental degradation and public health. Employing the System Dynamics method, the study delves into the intricacies of real-world system behavior, examining causal links and interrelationships within a system of interconnected sub-systems. Utilizing mental data, including scientific publications, mass media news, and expert opinions, alongside quantitative time series, the research focuses on the limitations of household waste management in addressing air and water pollution, posing potential health risks. Findings indicate a connection between population growth and increased waste generation, predominantly from residential sources. Unmanaged waste creation threatens air and water quality, emphasizing the importance of waste management in minimizing pollutants for improved public health. Aligning with the circular economy's 3R concept, effective waste management not only mitigates environmental impact but also holds the potential to enhance income generation. The circular economy's recycling and green entrepreneurship promotion can stimulate investments, fostering job creation. Collaborative efforts between governments and business owners can further support distribution and marketing channels, encouraging local self-sufficiency
Synthesis and Characterization of ZnO-Doped CuO with the Addition of Monoethanolamine Using the Sol-Gel Method Nazellia Asnur; Hary Sanjaya; Indang Dewata; Fajri Ikhsan
Journal of Multidisciplinary Science: MIKAILALSYS Vol 4 No 1 (2026): Journal of Multidisciplinary Science: MIKAILALSYS
Publisher : Darul Yasin Al Sys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/mikailalsys.v4i1.9537

Abstract

Semiconductors are materials capable of conducting electricity within specific limits, a property that is essential for applications in photocatalysts and solar cells. Copper oxide (CuO), a transition metal oxide, exhibits favorable properties as a p-type semiconductor and is characterized by a narrow bandgap ranging from 1.2 to 1.8 eV. However, CuO has a limitation in the form of a high electron–hole recombination rate, which requires modification through doping and additive incorporation. This study aims to analyze the effects of zinc oxide (ZnO) doping and the addition of monoethanolamine (MEA) on the characteristics of CuO nanoparticles synthesized using the sol–gel method. This method was selected because it can produce materials with a large surface area and good stability. Characterization was conducted using ultraviolet–diffuse reflectance spectroscopy (UV–DRS) to determine bandgap energy. The findings show that the optimal bandgap value was obtained at 20% ZnO concentration, with a bandgap energy of 1.33 eV, while the addition of 2 mL MEA produced a bandgap energy of 1.42 eV. The decrease in bandgap value indicates that ZnO doping affects the optical properties of CuO. A smaller bandgap narrows the distance between the valence band and the conduction band, thereby facilitating electron excitation and requiring lower photon energy. This study contributes to the development of modified CuO-based semiconductor materials by demonstrating the potential role of ZnO doping and MEA addition in improving optical characteristics relevant to photocatalytic and solar cell applications.
Co-Authors Abdul Razak Abdul Razak Abdul Razak Afdal Ilahi Afriyani, Ratih Agung Prayitno Ahmad Fasni Ahmad Fauzan Ahmad Juanda Ahmad Juanda Akbarullah Akhmad Yani Al Asyary Aldri Frinaldi Alfitri Alfitri Ali Amran Alizar, Alizar Aloysius Hari Kristianto Alwi Nofriandi Alya Fariani Amini, Aisyah Anaka, Dego Taftazani Ananda Putra Ananda Putra Andromeda Andromeda Anni Faridah Annisa, Ananda Suci Aprizon Putra Arif Rahman Hakim Arif Setiawan Arif Setiawan Arman A Astuti - Aswin, Zeus Marullah Atikah Muthmainnah Aturrahmah, Muthi Audia, Washilla Aulia Azhar Aulia Azhar Ayu Azizah Azzahra, Nabila Baqi, Ahmad Iqbal Barlin, Eri Berliana Salsabila Budhi Oktavia Budhi Oktavia Budhi Oktavia Carlo, Nasyfrizal Catri, Indra Christina Lydia Makmur Damanhuri, Harfiandri Dasman Lanin Dedi Agustanto Dedi Hermon Deliani, Nur Farida Derjulita, Defika Desy Kurniawati Desy Kurniawati Dewi Fortuna Khairil Dewi Rahmadani Siregar Dewi, Suci Firma Dhesya Ardiarini Dian Adhetya Arif dian rizky afriani Dinda Tri Pangesti Dipnorita Retno Dolla Mulyana Harnas Donny Fernandez Durain Parmanoan Dwi Annisa Fithry Dwi Marsiska Driptufany Dwi Putri, Vika Trisna Eddy Suratman Edi Nasra Edwin Musdi Egidia Mayendra Eka Putri, Elinda Eka Sovia Elfandra Fadhli Rabbi Elinda Fithriana Elsa Yuniarti Elvinda, Reza Emra, Auliana Endrizal Endrizal Eni Kamal Eri arlian Eri Barlian Eri Berlian Erianjoni Erianjoni Exposto, Levi Anatolia S.M. Fadhilah Fadhilah Fadila Fadila Gusman Fajar Agung Mulia Fajri Ikhsan Fajriah Azra Fajrin Fajrin Fardilla, Midratul Fatma, Winda Faulina Fatmawati Fatmawati Fatmawati, Rani Febrina, Suci Febryanti Febryanti Festiyed Fijri, Annisa Nurul Firya Afra Nisa ‘ Il Islam Fitra Arya Dwi Nugraha Fitri Sadilla Fitri Sadilla Fitri, Marisa Meliana Fitriandoni, Adisty Fitrya Monica Frida Rahmades, Windi Frinsis Warmansyah Frista, Nada Geita Yulyan Firel Genius Umar Gustia Dona Maya Haflatul HudaAli Handayuni, Linda Hardeli Hardeli Hardeli Hardeli Hardeli Hardeli Hardeli Hardeli Hari Asri, Hazqan Harika Harika Harmedi Yulian Saputra Harnas, Dolla Mulyana Hary Sanjaya Hary Sanjaya Hary Sanjaya Hary Sanjaya Haryeni Hayati, Neni Fitra Heldi heldi heldi Heldi Heldi, Heldi Henny Yulius Henny Yulius Herfien Heri Prabowo Hidayat S, Syaiful Hurriyah Hurriyah Hutmi, Rahul I Made Arnawa Ikhsani, Anugrah Putri Indra Catri Insani, Munadia Isva Abdul Ghani Iswandi - Umar Iswandi U Izzati Winda Murti Jamika, Fadel Ikrar Jefri Kurniawan Jelibseda Jelibseda, Jelibseda Jheni Sriayu Latifa Jon Efendi Juli Manda Sari Kasma Warni Khairi, Jumadil Kurniati Kurniati Kusnanda, Arif Juliari Latisma Dj Lindawati Lindawati Lisa Rahayu Lismomon Nata Mahalul Azam Maharani, Indah Kemala Mainita, Yosi Putri Maiyesi Yenti Marlini, Rahmida Maruf, Hidayatul Masrid Pikoli Mawardi Mawardi Mawardi Mawardi Meilindri, Rahmi Aulia Melisa Sri Hardianti Meria Ultra Gusteti Mery Delvina Meuraksa, Irawati Miftahul Khair Minda Azhar Minda Azhar Minda Azhar Minda Azhar Mira Hasti Hasmira Mona Gusfira Monica, Fitrya Monika Yulia Muchtar, Bustari Muhamad Sholichin Muhammad Fajri Muhammad Farhan Muhammad Habibul Ikhsan Muhammad Hidayat Muhammad Hiknul Ikhsan Muhayatul, Muhayatul Mulia, Melindra Mulya Gusman Munadia Insani Mutia Amran Nasfryzal Carlo Nasution, Rani Sakila Nasyfrizal Carlo Nazellia Asnur Nevy Sandra Niza Lian Pernadi Nizar, Umar Kalmar Nizwardi Azka Nofri Yuhelman Nofrianto Nofrianto Nur Azizah NUR EFENDI Nur Efendi Nurhasan Syah Nurila Rati Nurlaeli Rachmawati Koerniawan, Rina NURUL HIDAYAH Oktavia, Elfitri Olivia Oktorie Onasis, Aidil Osronita Osronita Perdani, Agung Sandi Pernadi, Niza Lian Pramesta, Deasycha Novelidia Pudia M. Indika Puja Rizki Bahari Purnama Wirawan Purnama Wirawan Putri Ayu Rahadian Zainul Rahayu, Youngky Gerre Rahmadani Siregar, Dewi Rahman Rahman Rahmatika, Aljumaatul Rahmi Hidayanti Rahmi, Fathaniah Raviqa Rammadani Yusran Rapitos Sidiq Rasli, Amran Md. Rembrandit Rembrandt, Rembrandt Rindi Genesa Hatika Riri Rahmahwati Joni Rismiati Rismiati Robet Triarjunet Romy Dwipa Yamesa Away Rustian, Zikra Putri Ryanda Luthfi Zaim Sabrina, Joya Safitri, Aprilliana Sakdimah Sakdimah Salsabila, Ilham Sandi Perdani, Agung Sandrawati, Neny Sari, Trisna Kumala Sati’at, Nur Anisa Semeidi Husrin Septya Anggraini Serly Mutia Sari Sherly Kasuma Warda Ningsih Sherly Kasuma Warda Ningsih Sinaga, Barita Siregar, Dewi Rahmadani Siti Fatimah Siti Fatimah Skunda Diliarosta Skunda Diliarosta Sovia, Eka Sri Benti Etika Suci Atma Hardika Suci Firma Dewi Sugeng Riyanto Sugriarta, Evino Suhendrinal Suparno . Surya Eka Putra Suryani, Okta Suryelita . Susi Erienti Syafardi, Zulhendra Syafarman Syafri Anwar Syafrijon Syafrijon Syah, Nur Hasan Syamsi Aini Syamsul Amar Syamsul Amar B Syukria Teguh Widodo Trisna Kumala Sari Try Al Tanto Ulianas, Alizar Ulya Amanda Zeds, Dhea Umar Kalmar Nizar Umar Kalmar Nizar Umar Kalmar Nizar Umar, Genius Umar, Iswandi Ummatin, Kuntum Khoiro Veronita, Silvi Vina Novela vira maryati Vivi Chaniasi Wahyu Prasetyo Agus Susanto Widian Ningrum Wilson Novarino Yaumal Arbi Yerimadesi Yohandri Yollafebrisa Wizul Yollafebrisa Wizul Yudi Antomi Yulia Pertiwi, Sari Yuliana Yulkifli Yulkifli Yunhendri Danhas Yusuf . Zaim, Ryanda Luthfi Zul Amri Zuldani, Irwan