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All Journal ASEAN Journal of Systems Engineering Jurnal Rekayasa Proses Reaktor Jurnal Bahan Alam Terbarukan Bulletin of Chemical Reaction Engineering & Catalysis Seminar Nasional Teknik Kimia Kejuangan ROTOR: JURNAL ILMIAH TEKNIK MESIN Konversi Jurnal Penelitian Karet Jurnal Rekayasa Proses Jurnal Teknologi Jurnal Inovasi Teknik Kimia Jurnal Teknik Kimia Indonesia Envirotek : Jurnal Ilmiah Teknik Lingkungan Prosiding Simposium Nasional Rekayasa Aplikasi Perancangan dan Industri Prosiding Seminar Hasil Penelitian dan Pengabdian Kepada Masyarakat Bulletin of Chemical Reaction Engineering & Catalysis Jurnal Akademika Kimia Jurnal Rekayasa Proses Journal of Engineering and Technological Sciences
Muslikhin Hidayat
Departemen Teknik Kimia, Fakultas Teknik, Universitas Gadjah Mada
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences

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Optimalisasi Regenerasi Dan Pemakaian Kembali Karbon Aktif Untuk Pemungutan Krom Dari Limbah Penyamakan Kulit Rahayu, Neni; Wintoko, Joko; Hidayat, Muslikhin
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2023: PROSIDING SNTKK 2023
Publisher : Seminar Nasional Teknik Kimia "Kejuangan"

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Abstract

In the wastewater treatment of leather tanning processes, commercial activated carbon from palm shells is usually used as an adsorbent. Therefore, a study is needed to evaluate the effectiveness of activated carbon that has been repeatedly regenerated and used as a total chromium adsorbent medium in wastewater. This study aims to examine the leaching process that uses acids and bases to analyze the adsorption and regeneration processes of activated carbon. Adsorption time variations of 30 minutes, 60 minutes, 90 minutes, and 120 minutes were used to evaluate how activated carbon interacts with wastewater. Then, the effluent was analyzed by Atomic Absorption Spectrophotometry (AAS) to determine the amount of total chromium remaining in the sample. The activated carbon which had been used as an adsorbent was contacted with 0.1 M H2S04 solution for 4 hours and stirred at 400 rpm using a magnetic stirrer to regenerate the surface of the activated carbon. It is neutralized with an alkaline solution. The Freundlich model is used to determine the value of the adsorption equilibrium constant. After testing 5 times, commercial activated carbon can still be used effectively as a adsorbent medium for total chromium (total Cr) repeatedly. Optimum adsorption contact time was 90 minutes. The optimum absorption efficiency during the fifth stage of the adsorption process was 43.93%.
Pemanfaatan Membran Selulosa Bakteri dari Limbah Kulit Pisang sebagai Matriks Masker Antioksidan Wibowo, Claudia Shinta Octa; Hidayat, Muslikhin; Sulistyo, Hary
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2023: PROSIDING SNTKK 2023
Publisher : Seminar Nasional Teknik Kimia "Kejuangan"

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Abstract

Banana skins have several potential applications in the health and beauty industries. Through a fermentation process with the help of Acetobacter xylinum, it produces banana skin bacterial cellulose. It is possible to further process this cellulose into a face mask matrix. Bacterial cellulose has biodegradable properties, a low toxicity value, and a good absorption ability to be applied as a face mask matrix. The addition of serum to the mask matrix aims to focus on the function of the formulated matrix. Methods: filtering the sample; making nata de banana skin with different fermentation times; making a matrix mask; matrix mask characterization; and data analysis. The results of the study showed that the variation of different fermentation times can affect the resulting cellulose products. The optimal fermentation time for producing nata was 10 days, resulting in a thickness of 0.92 cm. Then, the evaluation tensile strength test on the mask matrix revealed the highest value was also a 10-day fermentation variation, 3.000–10.000 kg/cm2. And last, the best test of the release of vitamin C is the 10-day fermentation variation.
Co-Authors ', Padil Afandy, Moh. A. Akhwari Wahyu P Annisa Fitri Harahap Arief Budiman Arif Kusumawanto Aswati Mindaryani Azarya, Eblin Alle Cahyono, Rochim Bakti Chatarina Umbul Wahyuni Danang Tri hartanto Devi Yuni Susanti Doni Agus Sumitro Eddy Kurniawan EKA SARI Emmy Nurhayati Febrina Sarlinda Fikrah Dian Indrawati Sawali Fikry Nashrullah K Hartanto, Danang Tri Harwin Saptoadi Hary Sulistyo Hary Sulistyo Henry Prastanto Henry Prastanto, Henry Iqbal Haitami Liau, Selva Susilowati M Sri Prasetyo Budi Mahendra Rian Putra Maria Arista Ulfa Megawati Megawati Meutia Ermina Toif Moh Fahrurrozi Moh. Azhar Afandy Moh. Fahrurrozi Muhammad Arif Wibisono, Muhammad Arif Muhammad Mufti Azis Muhammad Mufti Aziz Muhammad Natsir Hakiki Mustikaningrum, Mega Ningrum, Sari Sekar Nugraha, Maulana Gilar Nurhalim, Nurhalim Nurkholis Nurkholis Nurkholis Nurkholis Padil, Padil Panut Mulyono Rahayu, Neni Rahmi, Hertantri Yulia Rina Sri Kasiamdari Rochim Bakti Cahyono Rochmadi Rochmadi Rochmadi Rochmadi Rochmadi Rochmadi S Syamsiah Sarto Sarto Sarto Sarto Sarto Sarto Sediawan, Wahyudi B. Selo Sulistyo, Selo Sigit Abdurrakhman Siti Syamsiah Siti Syamsiah Sri Puji Saraswati Sri Rahayu Gusmarwani, Sri Rahayu Suhanan Suhanan Sunarya, Rahmat Susanti, Devi Y. Sutijan Sutijan Aziz Sutijan Sutijan Sutijan Sutijan Syafrima Wahyu Syamsiah, Siti Syarifhidayahtullah Syarif Ubet Khoirudin Veronika, Chintia Wahyudi Budi Sediawan Wahyudi Budi Sediawan Wahyudi Budi Sediawan Wahyudi Budi Sediawan Wibowo, Claudia Shinta Octa Yuni Kusumastuti, Yuni