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All Journal KOVALEN: Jurnal Riset Kimia Jurnal Teknologi Pertanian (Agricultural Technology Journal) Jurnal Abdimas Bina Bangsa Molekul: Jurnal Ilmiah Kimia
Tukan, Gerardus D.
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Education Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Social Sciences Other

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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.
Pengaruh Buah Kelapa Sebagai Faktor Keberhasilan Produksi Virgin Cocount Oil Secara Fermentasi Menggunakan Minyak Pancingan sawo, agustina; Tukan, Gerardus D.
Jurnal Teknologi Pertanian (Agricultural Technology Journal) Vol 14 No 2 (2023): Jurnal Teknologi Pertanian (Agricultural Technology Journal)
Publisher : Jurnal Teknologi Pertanian (Agricultural Technology Journal)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/jteta.v14i2.48189

Abstract

The production of virgin coconut oil by the community is carried out using various techniques. One of them is fermenting using pure coconut oil as an inducement oil. However, production failures often occur. This study aims to examine the condition of coconut fruit as one of the success factors in production. There were 3 types of test samples, namely old coconuts (A), old coconuts containing kentos (B) and half-ripe coconuts (C). Production is carried out using the fermentation method and virgin coconut oil is used as the cooking oil. The three types of samples were treated the same, namely the volume of coconut milk, the volume of castor oil, the condition of room temperature and the length of time fermentation. The test was carried out 5 times for each sample. The success of the fermentation is indicated by the separation of the oil from the water and blondo. The results showed that of the 5 times of production, the highest production success occurred in sample A, which was 87%, while sample B was 40% and sample C was 20%. It was concluded that production using coconut milk from old coconuts (sample A), had a higher production success rate compared to coconut milk from B and samples C.
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
Penggunaan Sabut Kelapa Teraktivasi NaOH sebagai Adsorben Metilen Biru: Utilization of Coconut Fiber NaOH-Activated as Blue Methylene Adsorbent Baunsele, Anselmus Boy; Boelan, Erly Grizca; Kopon, Aloisius Masan; Taek, Maximus M.; Tukan, Gerardus D.; Missa, Hildegardis
KOVALEN: Jurnal Riset Kimia Vol. 9 No. 1 (2023): April Edition
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/kovalen.2023.v9.i1.16274

Abstract

Methylene blue is a textile dye with carcinogenic and mutagenic properties which can cause various problems for the environment and organisms, therefore it is necessary to treat the waste. This study describes the adsorption of methylene blue using base-activated coconut coir. Coconut coir as waste was prepared into 80 mesh-sized powder and then activated using NaOH solution. The base-activated coconut fiber was then used for methylene blue adsorption under several optimization conditions such as pH, contact time, concentration, and adsorption isotherm. The determination of methylene blue was adsorbed by the adsorbent measured using UV-VIS. The pH and contact time results were 7 and 75 minutes, respectively, with the adsorption capacity (qe) of 1.98 mg g-1 and 99.91%. The isotherm adsorption of blue methylene followed the Langmuir isotherm model with the maximum adsorption capacity (Qmax) of 0.2 mg -1. The result showed that the coconut fiber base activated could be used as a dye adsorbent.
Co-Authors Ang, Clarisa Margaretha Anselmus Boy Baunsele Beatrix Yunarti Manehat Boikh, Ananda Oky Mekel M. Bria, Kristina Dwi Siswanta Erly Grizca Boelan Faderina Komisia Gani, Elisabeth Adelia Merdekawati Gokok, Gaspar Antonius Padua Rapok Hildegardis Missa Johnson N Naat Kopon, Aloisius Masan Leba, Maria A. U. Maria Augustin Lopes Amaral Maria Benedikta Tukan Rahayu Rahayu sawo, agustina Setiawan, Apolinaris Taek, Maximus M.