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All Journal HAYATI Journal of Biosciences Jurnal Sains dan Teknologi KOVALEN: Jurnal Riset Kimia Indonesia Chimica Acta Akta Kimia Indonesia Sains Natural: Journal of Biology and Chemistry Chemistry Indonesian Journal of Chemical Research JURNAL EDUCATION AND DEVELOPMENT Wahana : Tridarma Perguruan Tinggi Journal on Education Jurnal Kreativitas PKM JURNAL PENDIDIKAN MIPA Jurnal Inovasi Teknik Kimia Abdimas: Jurnal Pengabdian Masyarakat Universitas Merdeka Malang Jurnal Suluh Pendidikan BERNAS: Jurnal Pengabdian Kepada Masyarakat JURNAL PENDIDIKAN, SAINS DAN TEKNOLOGI Jurnal Pengabdian kepada Masyarakat Nusantara Jurnal Abdimas Bina Bangsa JURNAL PENDIDIKAN INDONESIA: Teori, Penelitian, dan Inovasi Indonesian Community Journal Aptekmas : Jurnal Pengabdian Kepada Masyarakat Educativo: Jurnal Pendidikan Molekul: Jurnal Ilmiah Kimia Jurna Beta Kimia Journal of The Indonesian Society of Integrated Chemistry
Erly Grizca Boelan
Universitas Katolik Widya Mandira
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Adsorption of Methylene Blue using the Biosorbent of Coconut Fiber Activated by Nitric Acid Baunsele, Anselmus Boy; Kopon, Aloisius Masan; Boelan, Erly Grizca; Leba, Maria A. U.; Komisia, Faderina; Tukan, Maria B.; Taek, Maximus M.; Tukan, Gerardus D.; Missa, Hildegardis; Siswanta, Dwi; Naat, Johnson N.; Rahayu, Rahayu
Molekul Vol 19 No 1 (2024)
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.jm.2024.19.1.9443

Abstract

The textile industry in the world keeps increasing, but it harms environmental pollution caused by textile dye waste. Synthetic dyes contain carcinogenic and mutagenic ingredients that can demage the environment and aquatic biota. The alternative to handling dye pollution with a low-cost method is adsorption using nitric acid-activated coconut fiber. Coconut fiber was an abundant agricultural waste and economical, and it had an active site that contained many compounds such as cellulose, lignin, pyroligneous acid, and tannin molecules. This study used the UV-Vis Spectrophotometer analysis method to determine the effect of pH, contact time, and coconut fiber on the adsorption capacity of methylene blue. The result showed that the optimal conditions for adsorption were a pH of 5, a contact time of 75 minutes, and a percentage adsorption of the variation of contact time of 99.628%. The adsorption study was according to a pseudo-second-order reaction with a constant reaction rate of 0.050 g mg-1 minute-1. The maximum adsorption capacity was 2 mg g-1, with the percentage of methylene blue adsorbed at 99.84%. Adsorption occurs chemically with an energy of 35.4 kJ mol-1, so it can be determined that it occurs with a monolayer mechanism.
Identification of Phytochemical Extract of a Combination of Young Coconut Water, Ginger and Turmeric Hasti, Florentina Saji; Kopon, Aloisius Masan; Baunsele, Anselmus Boy; Tukan, Maria Benedikta; Leba, Maria Aloisia Uron; Boelan, Erly Grizca; Komisia, Faderina
Indonesian Journal of Chemical Research Vol 9 No 3 (2022): Edition for January 2022
Publisher : Jurusan Kimia, Fakultas Sains dan Teknologi, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598//ijcr.2022.9-flo

Abstract

Turmeric is a tropical plant that is widely found on the Asian continent which is extensively used as a food coloring agent and fragrance. Ginger is a spice plant that it often found in South Asia which is widely has spread throughout the world. Coconut is an annual plant, has a hard stem and is generally not branched (monopodial), has fibrous roots, and contain water that is clear and tastes sweet, young coconut water has benefits such as antibacterial, beauty treatment, as an isotonic agent, and carry out the urination. This research was conducted to obtain information about the physicochemical properties and secondary metabolites contents of the coconut water, ginger and turmeric combination extract. The research method was carried out by mixing the mashed turmeric and ginger with the young coconut water and then macerated. The resulting extract was then tested for physicochemical properties (solubility) and identified groups of secondary metabolites (flavonoids, tannins, saponins, and steroids/triterpenoids. The extract was soluble in 70% ethanol. In addition, the combination of young coconut water, ginger, and turmeric extract contain a group of secondary metabolites among others flavonoids, tannins, saponins, and triterpenoids.
Phytochemical Screening and TLC Profiling of Combination Extracts of Avocado (Persea americana Mill.) and Papaya (Carica papaya) Leaves from Timor Island Kafelau, Marianus; Kopon, Aloisius Masan; Baunsele, Anselmus Boy; Tukan, Maria Benediktas; Leba, Maria Uron; Komisia, Faderina; Boelan, Erly Grizca
Indonesian Journal of Chemical Research Vol 10 No 1 (2022): Edition for May 2022
Publisher : Jurusan Kimia, Fakultas Sains dan Teknologi, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/ijcr.2022.10-boe

Abstract

Traditionally in the village of Alor, East Nusa Tenggara Province, a combination of avocado and papaya leaves is often used to treat malaria. To be able to be developed as an ingredient in traditional medicine, it is necessary to conduct preliminary research to determine the content of secondary metabolites contained in the combination of avocado and papaya leaves. This study aims to determine the secondary metabolites contained in avocado and papaya leaves through phytochemical screening and Thin Layer Chromatography (TLC) analysis. Extraction was carried out using methanol solvent by maceration, and the extract yield was 91.4%. Testing the content of secondary metabolites in avocado and papaya leaf extracts was carried out by phytochemical screening. Furthermore, the TLC test was carried out to confirm the presence of a positive group of compounds on phytochemical screening, and to determine the chromatographic profile of the extract. After being tested by phytochemical and TLC analysis, the extract contains several metabolites, including flavonoids, alkaloids, tannins, saponins, and steroids. The TLC system used in this study can separate the phytochemical content and give positive results that confirm the results of the phytochemical screening.
Kinetic Study of Blue Methylene Adsorption Using Coconut Husk Base Activated Baunsele, Anselmus Boy; Boelan, Erly Grizca; Kopon, Aloisius Masan; Rahayu, Rahayu; Siswanta, Dwi
Indonesian Journal of Chemical Research Vol 10 No 2 (2022): Edition for September 2022
Publisher : Jurusan Kimia, Fakultas Sains dan Teknologi, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598//ijcr.2022.10-ans

Abstract

Blue methylene is a cationic dye. It is usually as in various industries. The waste of blue methylene can reduce the environmental balance, especially for aquatic biota, by inhibiting the penetration of sunlight into the water. The experiment used the most natural ingredients and methods to minimize the existence of the dye. In this research, coconut husk was activated with NaOH solution and then used for blue methylene adsorption. The coconut husk started aims to reduce the pollution of the adsorbent to increase the adsorption capacity. The study result showed the optimum adsorption of blue methylene at pH 7 for 75 minutes of adsorption with the capacity adsorption of 1.41 mg g-1. The development of the kinetic study described the adsorption process according to a second-order pseudo reaction kinetic model with the constant adsorption rate of 2.54 x 10-4 g mg-1 minute-1.
Pigmen Umbi Ubi Jalar Ungu dan Rimpang Kunyit: Indikator Ramah Lingkungan dan Murah untuk Eksperimen Titrasi Asam-Basa Leba, Maria Aloisia Uron; Mau, Sisilia Daeng Bakka; Boelan, Erly Grizca; Taek, Maximus M.; Ruas, Juvencio de Castro; Lawung, Yustina D.; Ruas, Adilson de Castro; Kopon, Aloisius Masan; Ruas, Noemia A.
Journal of The Indonesian Society of Integrated Chemistry Vol. 15 No. 2 (2023): Journal of The Indonesian Society of Integrated Chemistry
Publisher : Pendidikan Kimia FKIP Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jisic.v15i2.28648

Abstract

[Pigments of Purple Sweet Potato and Turmeric Rhizome: Eco-Friendly and Cheap Indicators for Acid-Base Titration Experiment] Tujuan dari penelitian ini adalah mengkaji karakter pigmen umbi ubi jalar ungu (PUUJU) dan pigmen rimpang kunyit (PRK) pada larutan uji dan penggunaannya sebagai indikator titrasi asam basa dibandingkan dengan indikator fenolftalein. PRK diekstraksi dengan pelarut etanol sedangkan PUUJU diekstraksi dengan pelarut etanol dalam suasana asam. PUUJU dan PRK diuji karakter perubahan warnanya dan digunakan sebagai indikator titrasi HCl-NaOH dan CH3COOH-NaOH. Hasil penelitian menunjukkan PUUJU berwarna merah pada pH 1, pink pada pH 2-6, ungu pada pH 7, biru pada pH 8-9, hijau pada pH 10-11 dan kuning pada pH 12-14. PRK menunjukkan warna kuning pada pH 1-7, merah bata pudar pada pH 8 dan semakin pekat seiring naiknya nilai pH larutan. Kedua pigmen ini mampu menunjukkan perubahan warna yang jelas pada titik akhir titrasi layaknya indikator fenolftalien. Diperoleh konsentrasi HCl pada titrasi menggunakan indikator PP, PUUJU dan PRK berturut-turut adalah 0,1031 M, 0,1045 M dan 0,1025 M sedangkan konsentrasi CH3COOH berturut-turut adalah 0,0876 M, 0,0869 M dan 0,0853 M. Berdasarkan data-data ini, PUUJU dan PRK dapat digunakan sebagai indikator titrasi HCl-NaOH dan CH3COOOH-NaOH dalam praktikum kimia di kelas. Kata kunci/keyword: Volumetri, pigmen alami, ubi jalar ungu, kunyit, volumetry, natural pigment, purple sweet potato, turmeric rhizome.
TRANSFORMASI EKONOMI RUMAH TANGGA MELALUI PENGOLAHAN SAMPAH DOMESTIK, PENDAMPINGAN PRODUK BERBASIS SAMPAH Lopes Amaral, Maria Augustin; Manehat, Beatrix Yunarti; Tukan, Gerardus D.; Boelan, Erly Grizca; Ang, Clarisa Margaretha; Gani, Elisabeth Adelia Merdekawati; Setiawan, Apolinaris; Gokok, Gaspar Antonius Padua Rapok; Bria, Kristina; Boikh, Ananda Oky Mekel M.
Jurnal Abdimas Bina Bangsa Vol. 5 No. 2 (2024): Jurnal Abdimas Bina Bangsa
Publisher : LPPM Universitas Bina Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46306/jabb.v5i2.1355

Abstract

Introduction: Waste management in RT 041 Liliba is still ineffective, with many residents not separating organic and inorganic waste, which has an impact on the environment. Objective: To increase community awareness and skills in waste management through the establishment of a Waste Bank and training in making organic fertilizer. Research Method: Conducting socialization, practical training, and developing applications to monitor waste management and savings at the Waste Bank, introducing the RT 041 Liliba Waste Bank and liquid fertilizer products through social media. Results: The community succeeded in attracting the interest of 50 potential consumers for organic fertilizer products, and the application made it easier to monitor waste and savings. Conclusion: This program not only increases awareness of the importance of waste separation, but also opens up new economic opportunities, supporting environmental sustainability in RT 041 Liliba
KINETIKA ADSORPSI METILEN BIRU MEMANFAATKAN SERBUK GERGAJI KAYU JATI TERAKTIVASI ASAM SULFAT Anselmus Boy Baunsele; Erly Grizca Boelan; Aloisius Masan Kopon; Maria Aloisia Uron Leba; Hildegardis Missa; Rahayu Rahayu; Merpiseldin Nitsae; Dwi Siswanta
Jurnal Inovasi Teknik Kimia Vol 9, No 4 (2024)
Publisher : Fakultas Teknik Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31942/inteka.v9i4.12024

Abstract

Peningkatan kapasitas industri memberikan dampak positif bagi masyarakat namun meninggalkan jejak kerusakan bagi lingkungan. Tujuan penelitian ini untuk membantu menangani limbah metilen biru yang sering menjadi bahan buangan dari aktivitas industri. Metilen biru menjadi salah satu masalah karena mencemari lingkungan. Berbagai penyakit misalnya kanker maupun perubahan genetik bisa terjadi karena bioakumulasi bahan ini. Penanganan masalah pencemaran lingkungan akibat metilen biru telah banyak dilakukan misalnya adsorpsi, karena metode ini cukup sederhana dan mudah diterapkan. Berbagai bahan alam digunakan sebagai adsorben, contohnya serbuk gergaji kayu jati yang dijadikan sebagai adsorben. Serbuk gergaji kayu jati pada penelitian ini diaktivasi menggunakan larutan asam sulfat. Selanjutnya dilakukan karakterisasi menggunakan FTIR, SEM-EDX dan pHpzc. Setelah dikarakterisasi lalu dilakukan analisis adsorpsi metilen biru secara batch. Variabel penelitian yaitu variasi pH dan waktu kontak. Hasil penelitian menunjukkan bahwa adsorpsi maksimal pada pH 6 dengan kapasitas adsorpsi 1,96 mg g-1 (99,3%) dan waktu kontak maksimum yaitu 30 menit dengan nilai Qe adalah 1,97 mg g-1 (99,7%)
KINETIKA ADSORPSI METILEN BIRU MEMANFAATKAN SERBUK GERGAJI KAYU JATI TERAKTIVASI ASAM SULFAT Anselmus Boy Baunsele; Erly G. Boelan; Aloisius M. Kopon; Maria A. U. Leba; Hildegardis Missa; Rahayu; Merpiseldin Nitsae; Dwi Siswanta
Jurnal Inovasi Teknik Kimia Vol. 9 No. 4 (2024)
Publisher : Fakultas Teknik Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31942/inteka.v9i4.12522

Abstract

Peningkatan kapasitas industri memberikan dampak positif bagi masyarakat namun meninggalkan jejak kerusakan bagi lingkungan. Tujuan penelitian ini untuk membantu menangani limbah metilen biru yang sering menjadi bahan buangan dari aktivitas industri. Metilen biru menjadi salah satu masalah karena mencemari lingkungan. Berbagai penyakit misalnya kanker maupun perubahan genetik bisa terjadi karena bioakumulasi bahan ini. Penanganan masalah pencemaran lingkungan akibat metilen biru telah banyak dilakukan misalnya menggunakan metode adsorpsi, karena metode ini cukup sederhana dan mudah diterapkan. Berbagai bahan alam digunakan sebagai adsorben, salah satu contoh limbah yang bisa dijadikan sebagai adsorben yaitu serbuk gergaji kayu jati. Serbuk gergaji kayu jati pada penelitian ini diaktivasi menggunakan larutan asam sulfat. Selanjutnya dilakukan karakterisasi menggunakan FTIR, SEM-EDX dan pHpzc. Setelah dikarakterisasi lalu dilakukan analisis adsorpsi metilen biru secara batch. Variabel penelitian yaitu variasi pH dan waktu kontak. Hasil penelitian menunjukkan bahwa adsorpsi maksimal pada pH 6 dengan kapasitas adsorpsi 1,96 mg g-1 (99,3%) dan waktu kontak maksimum yaitu 30 menit dengan nilai Qe adalah 1,97-1mg g (99,7%).
KEMAMPUAN BERPIKIR KRITIS DAN HASIL BELAJAR DENGAN MENERAPKAN PENDEKATAN SANTIFIK PADA MATERI LAJU REAKSI Manu, Frafilius Don Bosko; Hayon, Vinsensia H.B; Boelan, Erly Grizca
Jurnal Suluh Pendidikan Vol 13 No 2 (2025): Agustus 2025
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas HKBP Nommensen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36655/jsp.v13i2.1981

Abstract

This study aims to analyse students' critical thinking skills and learning outcomes after applying a scientific approach to reaction rate material. The study used a quantitative descriptive method with a one-shot case study design on 16 students in class XI IPA at Taruna Mandiri Fatubenao High School. Data were collected through critical thinking ability tests, knowledge assessments (including assignments and tests), and skill assessments (including psychomotor skills, presentations, and portfolios). The results showed that students' critical thinking skills were classified as fairly good with an average score of 46. Meanwhile, the overall learning outcomes of the students were declared complete with an average score of 84. The learning outcomes for the knowledge aspect (KI-3) obtained an average of 83, and the skills aspect (KI-4) obtained an average of 86. Although critical thinking skills were not optimal due to limited implementation time, the application of the scientific approach proved to be effective in achieving learning outcomes in both knowledge and skills aspects. This study concludes that the scientific approach can be an effective learning strategy for improving critical thinking skills and student learning outcomes in reaction rate materials.
Desain Lembar Kerja Berbasis Problem Based Learning (PBL) Untuk Meningkatkan Pemahaman Konsep Kimia: Kasus Sifat Koligatif Larutan Laulaleng, Susan Oren; Tukan, Maria Benedikta; Boelan, Erly Grizca
Jurnal Pendidikan Indonesia : Teori, Penelitian, dan Inovasi Vol 5, No 5 (2025): Jurnal Pendidikan Indonesia : Teori, Penelitian, dan Inovasi
Publisher : Penerbit Widina, Widina Media Utama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59818/jpi.v5i5.2090

Abstract

This study aims to: (1) evaluate the validity of the Problem-Based Learning (PBL)-based Student Worksheet (LKPD) used in chemistry teaching, particularly on the topic of Colligative Properties of Solutions; (2) evaluate learning outcomes in terms of knowledge and skills among 11th grade students at SMA Negeri 1 Titehena after using PBL-based LKPD; and (3) analyze student responses to the developed LKPD media. This study used a research and development design, involving a sample of 11 students from class XI MIA 2. The tools used included a PBL-based LKPD validation sheet, a learning outcome assessment sheet for KI-3 and KI-4 competencies, and a student response questionnaire. The data analysis techniques applied included: LKPD Media Validity Analysis, Learning Mastery Analysis, and Student Response Analysis. The results of the study show that: (1) the PBL-based Student Worksheet (LKPD) developed by the researcher is found to be highly valid and suitable for use; (2) students achieved learning mastery with an average score of 95; and (3) student responses to learning using PBL-based LKPD media were categorized as very positive, with a percentage score of 94%.ABSTRAK Penelitian ini bertujuan untuk: (1) mengevaluasi validitas Lembar Kerja Peserta Didik (LKPD) berbasis Problem-Based Learning (PBL) yang digunakan dalam pengajaran kimia, khususnya pada topik Sifat Koligatif Larutan; (2) mengevaluasi hasil belajar dalam hal pengetahuan dan keterampilan di kalangan siswa kelas XI SMA Negeri 1 Titehena setelah menggunakan LKPD berbasis PBL; dan (3) menganalisis tanggapan siswa terhadap media LKPD yang dikembangkan. Penelitian ini menggunakan desain pengembangan (Research and Development), melibatkan sampel 11 siswa dari kelas XI MIA 2. Alat yang digunakan meliputi lembar validasi LKPD berbasis PBL, lembar penilaian hasil belajar untuk kompetensi KI-3 dan KI-4, serta kuesioner tanggapan siswa. Teknik analisis data yang diterapkan meliputi: Analisis Validitas Media LKPD, Analisis Penguasaan Belajar, dan Analisis Tanggapan Siswa. Hasil penelitian menunjukkan bahwa: (1) Lembar Kerja Siswa (LKPD) berbasis PBL yang dikembangkan oleh peneliti ditemukan sangat valid dan layak digunakan; (2) siswa mencapai penguasaan hasil belajar dengan skor rata-rata 95; dan (3) tanggapan siswa terhadap pembelajaran menggunakan media LKPD berbasis PBL dikategorikan sangat positif, dengan skor persentase 94%.
Co-Authors Adean Elisabeth Berti Bano Adi Setyo Purnomo Adrianus Ketmoen Afrianus Jenudin Alexander Reynaldi Koli Alfry Aristo Jansen Sinlae Aloisius M. Kopon Aloisius Masan Kopon Aloisius Masan Kopon Aloysius Masan Kopon An, Clarisa Margareth Ang, Clarisa Margaretha Anjelina Derci Jenimat Anjelina Derci Jenimat Anselmus Boy Baunsele Apolonia Loda Apriono Sutiono Beatrix Yunarti Manehat Benediktus Peter Lay Boikh, Ananda Oky Mekel M. Bria, Kristina D.W. Rabawati Desiderata N. Fallo Dwi Siswanta Ermelinda Hoar Halek Ernesta Uba Wohon Faderina Komisia fajriah Ferdinandus Pantur Fredy Saudale Gani, Elisabeth Adelia Merdekawati Gerardus Diri Tukan Goa, Rio Fernando Gokok, Gaspar Antonius Padua Rapok Hasti, Florentina Saji Hayon, Vinsensia H.B. Hildegardis Missa Ida Ayu Putu Sri Widnyani Imelda Paul Jesica Mirna Aprilia Johnson N Naat Kafelau, Marianus Kamei, Ichiro Kapitan, Origenes Boy Kenneth R.M Anakottapary Kopon, Aloisius Masan Kopon, Aloysius Masan Laulaleng, Susan Oren Leba, Maria A. U. Leba, Maria Uron Luan, Olyva Renyarosari Luther Kadang Manu, Frafilius Don Bosko Maria A. U. Leba Maria Aloisia Uron Leba Maria Augustin Lopes Amaral Maria Benedikta Tukan Maria Bernadethe Mawarni Gelu Wutun Maria O. Krisdayanti Maria T.Geme Marianus Jefri Agang Mariaty Tada Maximus M Taek Melania Wildaiman Merpiseldin Nitsae Paskalis Andrianus Nani Paulus Adrianus K. L. Ratumakin Pong, Anjela A. Priscilla M. A Hornay Rahayu Rahayu Rahayu Rahayu Rahayu Rofina M. Rua Rosalia Wea Tadi Nuwa Roswita Bere Ruas, Adilson de Castro Ruas, Juvencio de Castro Ruas, Noemia A. Saudale, Fredy Sebdiel Boimau Setiawan, Apolinaris Sisilia Daeng Bakka Mau Solly Aryza Stefanus Don Rade Taek, Maximus M. Tangi, Hironimus Theresia Wariani Theresia Wariani Timotius Nesanto Tinenti, Yanti Rosinda Trifiani A.B Ena Tukan, Gerardus D. Tukan, Maria Benediktas Viany Cecilia Pah Yasinta S. Enes Yustina D Lawung Yustina Dwisofiani Lawung