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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) COUNS-EDU: The International Journal of Counseling and Education JURNAL PENDIDIKAN TAMBUSAI Jurnal Kelautan Nasional International Journal of Educational Dynamics (IJEDS) Global Conference Index Menara Ilmu Pelita Eksakta Sainstek : Jurnal Sains dan Teknologi Science and Environmental Journals for Postgraduate Natural Science: Jurnal Penelitian Bidang IPA dan Pendidikan IPA AEEJ : Journal of Automotive Engineering and Vocational Education PRIMER (Prima Medical Journal) Dinamika Lingkungan Indonesia Jurnal Pijar MIPA MASALIQ: Jurnal Pendidikan dan Sains Jurnal Pengabdian Pada Masyarakat Jurnal Kependudukan dan Pembangunan Lingkungan (JKPL) 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
Indang Dewata
Universitas Negeri Padang
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Journal : MASALIQ: Jurnal Pendidikan dan Sains

 1 
Identifikasi Mikroplastik Poliamida (PA) dengan Menggunakan Metode Ekstraksi Penambahan Wet Peroxide Oxidation (WPO) Safitri, Aprilliana; Dewata, Indang
MASALIQ Vol 4 No 1 (2024): JANUARI
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/masaliq.v4i1.2135

Abstract

Microplastics are synthetic solid particles or polymer matrices, with regular or irregular shapes and with sizes ranging from 1 μm to 5 mm. The impact of microplastics is very dangerous for living creatures and the natural environment. The results of microplastic separation using this method were optimal at an oven time of 12 hours, H2O2 concentration of 35% and Characteristics of functional groups using FTIR show that there is absorption of NH, CH, C=O and CN at wavelengths 3292.96, 2934.25, 1631.50, 1538.56 which are characteristic wavelengths for polyamide (PA) microplastics.
Optimasi Konsentrasi Fe(II) pada Metode Wet Peroxide Oxidation (WPO) untuk Identifikasi Mikroplastik Polypropylene (PP) Mainita, Yosi Putri; Dewata, Indang
MASALIQ Vol 4 No 1 (2024): JANUARI
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/masaliq.v4i1.2518

Abstract

One of the global problem is plastic waste, if not handled properly it will cause waterpollution. Plastic will degrade into samall pasrticles called microplastic. Polyperopylene plastic will be cut very small size and soaked in water and left in an open room for one month, so that the microplastic degrade naturally and become contaminated by organic impurities. The method used is Wet Peroxide Oxidation (WPO) which was adapted from the National Oceanic and atsmospheric (NOAA). Optimization was carried out the concentration of the Fe(II) catalyst with variations (0.025, 0.05, 0.075, 0.1, 0.125) M. The research result showed that the optimum condition for the Fe(II) consentration was 0.1 M as evidenced by the microplastic mass obtained. Characterization tests were carried out using a stereo microscope, and microplastics were found in the form of fragments and filament.
Efektivitas Kitosan Cangkang Kepiting (Scylla serrata) sebagai Koagulan untuk Mengurangi Mikroplastik Polistirena (PS) dalam Air Limbah Latifa, Jheni Sriayu; Dewata, Indang
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) HudaAli, Haflatul; Dewata, Indang
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) Rati, Nurila; Dewata, Indang
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 Ilahi, Afdal; Dewata, Indang
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.
Co-Authors Abdul Razak Abdul Razak Abdul Razak Afriyani, Ratih Agung Prayitno Ahmad Fasni Ahmad Fauzan Ahmad Juanda Al Asyary Aldri Frinaldi Alfitri Alfitri Ali Amran Alizar, Alizar Alwi Nofriandi Amini, Aisyah Anaka, Dego Taftazani Ananda Putra Ananda Putra Andromeda Andromeda Annisa, Ananda Suci Aprizon Putra Arif Rahman Hakim Arif Setiawan Arif Setiawan arlian, Eri Arman A Atikah Muthmainnah Aturrahmah, Muthi Aulia Azhar Ayu Azizah Azzahra, Nabila bahari, puja rizki Baqi, Ahmad Iqbal Berliana Salsabila Budhi Oktavia Budhi Oktavia Budhi Oktavia Catri, Indra Christina Lydia Makmur Damanhuri, Harfiandri Dasman Lanin Dedi Agustanto Dedi Hermon Deliani, Nur Farida Delvina, Mery Derjulita, Defika Desy Kurniawati Desy Kurniawati Dewi Fortuna Khairil Dewi, Suci Firma Dian Adhetya Arif dian rizky afriani Dipnorita Retno Dolla Mulyana Harnas Donny Fernandez 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 Eni Kamal Eri Barlian Eri Berlian Erianjoni Erianjoni Exposto, Levi Anatolia S.M. Fadhilah Fadhilah Fadila Gusman Fajriah Azra Fajrin Fajrin Fariani, Alya 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, Marisa Meliana Fitriandoni, Adisty Frida Rahmades, Windi Frinsis Warmansyah Frista, Nada Fuji Astuti Febria Geita Yulyan Firel Gustia Dona Maya 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 HudaAli, Haflatul Hurriyah Hurriyah Hutmi, Rahul I Made Arnawa Ikhsani, Anugrah Putri Ilahi, Afdal Indra Catri Insani, Munadia Isva Abdul Ghani Iswandi - Umar Iswandi U Jamika, Fadel Ikrar Jelibseda Jelibseda, Jelibseda Jon Efendi Juli Manda Sari Kasma Warni Khairi, Jumadil Kristianto, Aloysius Hari Kurniati Kurniati Kusnanda, Arif Juliari Latifa, Jheni Sriayu Latisma Dj Lindawati Lindawati 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 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 Nasution, Rani Sakila Nasyfrizal Carlo Niza Lian Pernadi Nizar, Umar Kalmar Nizwardi Azka Nofri Yuhelman Nofrianto Nofrianto Nofrianto Nofrianto Nur Azizah NUR EFENDI Nur Efendi Nurhasan Syah Nurlaeli Rachmawati Koerniawan, Rina NURUL HIDAYAH Oktavia, Elfitri Olivia Oktorie Onasis, Aidil Osronita Osronita Pangesti, Dinda Tri Perdani, Agung Sandi Pernadi, Niza Lian Pramesta, Deasycha Novelidia Pudia M. Indika Purnama Wirawan Purnama Wirawan Putra, Surya Eka Putri Ayu Rahadian Zainul Rahayu, Lisa Rahayu, Youngky Gerre Rahmadani Siregar, Dewi Rahman Rahman Rahmatika, Aljumaatul Rahmi Hidayanti Rahmi, Fathaniah Raviqa Rammadani Yusran Rapitos Sidiq Rasli, Amran Md. Rati, Nurila Rembrandit Rembrandt, Rembrandt Riri Rahmahwati Joni Rismiati, Rismiati Robet Triarjunet Romy Dwipa Yamesa Away Rustian, Zikra Putri Ryanda Luthfi Zaim Sabrina, Joya Sadilla, Fitri Safitri, Aprilliana Sakdimah Sakdimah 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 Sholichin, Muhamad 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 Syah, Nur Hasan Syamsi Aini 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 Veronita, Silvi Vina Novela vira maryati Vivi Chaniasi Wahyu Prasetyo Agus Susanto Wilson Novarino Yani, Akhmad Yerimadesi Yerimadesi Yerimadesi Yerimadesi Yohandri Yollafebrisa Wizul Yollafebrisa Wizul Yudi Antomi Yulia Pertiwi, Sari Yuliana Yuliana Yulkifli Yulkifli Yunhendri Danhas Yusuf . Zul Amri Zuldani, Irwan