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All Journal Eksergi: Chemical Engineering Journal IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) ALCHEMY Jurnal Penelitian Kimia Jurnal Distilasi Jurnal Redoks Martabe : Jurnal Pengabdian Kepada Masyarakat WIDYA LAKSANA Jurnal Inovator Barometer Jurnal Teknik Kimia JURNAL SURYA ENERGY Best Journal (Biology Education, Sains and Technology) Jurnal Abdi Insani JURNAL TEKNIK PATRA AKADEMIKA AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Aptekmas : Jurnal Pengabdian Kepada Masyarakat Jurnal Abdimas Musi Charitas Jurnal Teknik Kimia dan Lingkungan PROSIDING SEMINAR NASIONAL PENELITIAN DAN PENGABDIAN KEPADA MASYARAKAT (SNPPM) UNIVERSITAS MUHAMMADIYAH METRO Bulletin of Chemical Reaction Engineering & Catalysis Jurnal Teknologi Riset Terapan SURYA EDUKASI
Mardwita
Program Studi Teknik Kimia, Fakultas Teknik, Universitas Muhammadiyah Palembang
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Pengaruh Berat Karbon Aktif Dari Ampas Tebu dan Lama Perendaman Terhadap Kualitas Minyak Goreng Bekas Mardwita; Eka Sri Yusmartini; Nindia Selviana
Jurnal INOVATOR Vol. 5 No. 1 (2022): Jurnal INOVATOR
Publisher : LPPM Politeknik Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37338/inovator.v5i1.148

Abstract

The amount of used cooking oil is increasing along with human activities. Used cooking oil that is disposed directly into the environment will give a negative impact on health and the quality of the environment, therefore it is necessary to purify the used cooking oil so that the used cooking oil can be reused. In this study, used cooking oil that has been used with heating time of 3 hrs, 5 hrs, and 7 hrs was used. The used cooking oil was purified using activated carbon made from 100 mesh bagasse with variations in weight of 2.5 g, 5 g, and 7 g, soaking time of activated carbon in used cooking oil were 24 hrs, 48 ​​hrs, and 72 hrs. The analysis used is the analysis of water content, free fatty acid content, and the amount of saponification. The results showed that the water content and saponification rate decreased with the length of contact time and the weight of activated carbon. The lowest free fatty acid content was produced when using activated carbon 7.5 g and contact time for 24 hrs.
Synthesis and Characterization of an Adsorbent from Chicken Eggshell and Its Application for Methyl Orange Eka Sri Yusmartini; Mardwita Mardwita; Eko Ariyanto; Wahyu Triaji Rahadianto; Ikbal Oktaviansyah; Muhammad Dzaky Muzhaffar
ALCHEMY Jurnal Penelitian Kimia Vol 22, No 1 (2026): March
Publisher : UNIVERSITAS SEBELAS MARET (UNS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/alchemy.22.1.96880.170-178

Abstract

Eggshell is a part that protects egg components from various external threats, including chemical, physical, and biological factors. This study aimed to obtain an adsorbent from chicken eggshells using physical and chemical activation techniques. The quality of the eggshell-derived adsorbent was assessed and compared with the Indonesian National Standard (SNI) 1995, with a focus on parameters such as ash content, moisture content, and iodine absorption. The adsorbent obtained was applied to a solution of methyl orange, and Fourier transform infrared spectroscopy (FTIR) analysis was conducted before and after the adsorption process. Furthermore, the study stages include adsorbent preparation, activation, and adsorption. The adsorbent weight for this process was 17 grams, with time intervals of 15, 30, 45, 60, and 75 minutes. The results showed that both physically activated as well as physical and chemical activated adsorbents met the SNI 1995 standard, based on the parameters of water content (1.73% and 2.86%), ash content (8.18% and 6.745), and iodine absorption (761.40 mg/g and 774.09 mg/g). FTIR analysis confirmed the presence of a hydrocarbon and an OH group in the structure before and after adsorption. The optimum methyl orange adsorption capacity was achieved at an adsorbent mass of 17 grams and a contact time of 60 minutes, resulting in removal efficiencies of 20.38% for physical activation and 24.11% for physical and chemical activation.
Pemanfaatan Umbi Gadung (Dioscorea hispida) Sebagai Bahan Perekat Ramah Lingkungan Marhaini Marhaini; Mardwita Mardwita; Ani Melani; Ummi Kalsum; Heni Juniar; Dewi Fernianti; Muhammad Arief Karim
Surya Edukasi: Jurnal Pengabdian Masyarakat Vol 3, No 1 (2026): Surya Edukasi: Jurnal Pengabdian Masyarakat
Publisher : Universitas Muhammadiyah Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32502/se.v3i1.11064

Abstract

Kegiatan pengabdian kepada masyarakat ini bertujuan untuk meningkatkan pemanfaatan sumber daya lokal berupa umbi gadung (Dioscorea hispida) sebagai bahan perekat alami yang ramah lingkungan. Umbi gadung selama ini kurang dimanfaatkan secara optimal karena kandungan racunnya, namun memiliki potensi sebagai bahan dasar perekat karena kandungan pati yang tinggi. Metode kegiatan meliputi sosialisasi, pelatihan pembuatan perekat, serta pendampingan kepada masyarakat. Hasil kegiatan menunjukkan bahwa masyarakat mampu mengolah umbi gadung menjadi perekat sederhana yang dapat digunakan untuk kebutuhan rumah tangga seperti kerajinan dan perekat kertas. Kegiatan ini juga meningkatkan pengetahuan masyarakat tentang pemanfaatan limbah dan bahan lokal secara berkelanjutan. 
Oleoresin Kayu Manis (Cinnamomun Burmannii) Dengan Metode  Ekstraksi Sokhletasi (Mempelajari Pengaruh Waktu Ekstraksi Dan Volume Pelarut) Ani Melani; Mardwita Mardwita; Robiah Robiah; Jannatul Fitri
Jurnal INOVATOR Vol. 9 No. 1 (2026): Jurnal INOVATOR
Publisher : LPPM Politeknik Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37338/gth8e332

Abstract

Cinnamon is a spice product that is often found in Indonesia. Indonesia still exports it in the form of cinnamon rolls (quill) which have low economic value when compared to essential oils or oleoresin, consequently the welfare of farmers is still low. In this research, the production of cinnamon oleoresin was conducted by the Sokhlet Extraction method. The sample used was cinnamon powder with a size of 100 mesh with a weight of 20 gr, then the volume variation of the solvent (ethanol 96%) (80; 120; 160; 200; 240) ml and extraction times were 3; 3.5; 4; 4.5; and 5 hr at 80 °C. The extraction results are then distilled, to separate the solvent (ethanol) with oleoresin at a temperature of 80 °C. This study was conducted to determine the effect of solvent volume variation and extraction time on the production of cinnamon oleoresin, the percentage of yield, sinamaldehyde content and density. The results showed the highest pecentage was obtained at solvent volume (ethanol 96%) 200 ml, with 4.5 hr with a percentage of rendement 63,73%, levels of cinamaldehyde 74% and density of 1.0054 gr/l, these meets the quality standard of cinnamon bark oil (SNI 06-3734-2006).
Co-Authors Agustina Agustina . Alqorni, Muhammad Faris Ani Melani Ani Melani Ani Melani Ary Rahmady Pratama Ary Rahmady Pratama Aseptianova Aseptianova Aseptianova Aseptianova Aseptianova Aseptianova Aseptianova Atikah Atikah Atikah Atikah Azzahra Aprilia Rosa Eka Sri Yusmartini Eko Ariyanto Elfidiah Fernianti, Dewi Galih Abriansyah Heni Juniar Husnul Khotimah Ikbal Oktaviansyah Innike Abdillah Fahmi Jannatul Fitri Junanda Marza Juniar, Heni Kaswari, Suli Cahaya Khuluqa, M Afif Al Ahsan Kiagus Ahmad Roni Lolita Safitri Marhaini Marhaini Merisha Hastarina Meylinda Rahayu Muhammad Arief Karim Muhammad Djoni Bustan Muhammad Djoni Bustan Muhammad Dzaky Muzhaffar Netty Herawaty Nidya Wisudawati Nindia Selviana Parwanti, Sri Rahadianto Wahyu Triaji Rifdah, Rifdah Rifdah, Rifdah Rivaldo, M. Chobind Robiah Robiah Rurry Patradhiani Sri Haryati Sri Haryati Suli Cahaya Kaswari Sulton Nawawi Suranda, Arief Suryati, Linda Ummi Kalsum Wahyu Triaji Rahadianto Yoga Yuniadi Yuliawati, Erna Yuliwati, Erna Zuber Angkasa