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Indra Perdana
Departemen Teknik Kimia, Fakultas Teknik, Universitas Gadjah Mada, Jl. Grafika No.2 Yogyakarta 55281, Indonesia, Telp.(+62274) 561176
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Journal : Seminar Nasional Teknik Kimia Kejuangan

 1 
Karakteristik Morfologi dari Formulasi Pupuk NPK Coated dengan Enkapsulasi Starch-PVA-Glycerol Habibi, Wildan; Purnomo, Chandra Wahyu; Perdana, Indra
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2023: PROSIDING SNTKK 2023
Publisher : Seminar Nasional Teknik Kimia "Kejuangan"

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Abstract

In modern agriculture, the application of NPK fertilizer plays an important role in food security. However, most commercial uncoated fertilizers have low nutrient absorption efficiency with 30-70% nutrient loss, advances to financial losses for farmers and causing environmental issues. Slow-release fertilizer (SRF) is the best solution to decrease loss rate, supplying nutrients sustainably, and reduces potential negative environmental effects. These fertilizers are made by physically encapsulating NPK fertilizer with organic hydrophobic materials (starch-polyvinyl alcohol (PVA)-glycerol). Double layered encapsulation is formulated by in-situ copolymerization of starch with vinyl acetate monomer from PVA in different ratios. Glycerol is added to increase the film compatibility. Scanning Electron Microscope (SEM) followed by Energy Dispersive X-ray (EDX) analysis reveals the morphological characteristic of uncoated and coated NPK samples. The surface micrograph of uncoated NPK exhibits fine spire crystals that are intensely cemented on to the surface with some bigger crystals of potassium chloride. The gaps and pores are also visible. The SEM micrographs of coated NPK depict layering and agglomeration that is a clear indication of the coating. A higher ratio of PVA increases agglomeration on the surface of coated NPK, representing dense and complete coverage with less pores and cavities occurs
Physical Separation Bahan Aktif Katoda dari Campuran Hasil CrushingBaterai Lithium-Ion Bekas Fadillah, Farika Asna; Perdana, Indra; Purnomo, Chandra Wahyu
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2023: PROSIDING SNTKK 2023
Publisher : Seminar Nasional Teknik Kimia "Kejuangan"

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Abstract

The increasing use of electric vehicles in the coming decades makes the recycling of spent li-ion batteries an important topic to develop. Recycling spent li-ion batteries is necessary to extract valuable materials from the battery cathode. Elutriation is one of the separation method to separate the cathode and anode from the blackmass resulting from crushing by utilizing differences in density and terminal velocity. The Elutriation method is attractive to develop because the separation is done by adjusting the fluid velocity and does not use chemicals. In this study, 4 variations of fluid load will be used, namely 24, 27, 30, and 34 mL/min. The blackmass to be elutriated has a size variation between -38 to +53 micrometers. From the results under the elutriator, the cathode mass obtained for fluid load variations of 24, 27, 30, and 34 mL/min are 0.8366, 0.4333, 0.3907, and 0.1349 grams. The highest cathode recovery at a load of 24 mL/min is 97.21% and the cathode fraction is 0.4091. Furthermore, it can increase the cathode composition in the mixture by 48.98% and reduce the anode composition by 18.54%.
Karakteristik Morfologi dari Formulasi Pupuk NPK Coated dengan Enkapsulasi Starch-PVA-Glycerol Habibi, Wildan; Purnomo, Chandra Wahyu; Perdana, Indra
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2023: PROSIDING SNTKK 2023
Publisher : Seminar Nasional Teknik Kimia "Kejuangan"

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

In modern agriculture, the application of NPK fertilizer plays an important role in food security. However, most commercial uncoated fertilizers have low nutrient absorption efficiency with 30-70% nutrient loss, advances to financial losses for farmers and causing environmental issues. Slow-release fertilizer (SRF) is the best solution to decrease loss rate, supplying nutrients sustainably, and reduces potential negative environmental effects. These fertilizers are made by physically encapsulating NPK fertilizer with organic hydrophobic materials (starch-polyvinyl alcohol (PVA)-glycerol). Double layered encapsulation is formulated by in-situ copolymerization of starch with vinyl acetate monomer from PVA in different ratios. Glycerol is added to increase the film compatibility. Scanning Electron Microscope (SEM) followed by Energy Dispersive X-ray (EDX) analysis reveals the morphological characteristic of uncoated and coated NPK samples. The surface micrograph of uncoated NPK exhibits fine spire crystals that are intensely cemented on to the surface with some bigger crystals of potassium chloride. The gaps and pores are also visible. The SEM micrographs of coated NPK depict layering and agglomeration that is a clear indication of the coating. A higher ratio of PVA increases agglomeration on the surface of coated NPK, representing dense and complete coverage with less pores and cavities occurs
Physical Separation Bahan Aktif Katoda dari Campuran Hasil CrushingBaterai Lithium-Ion Bekas Fadillah, Farika Asna; Perdana, Indra; Purnomo, Chandra Wahyu
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2023: PROSIDING SNTKK 2023
Publisher : Seminar Nasional Teknik Kimia "Kejuangan"

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The increasing use of electric vehicles in the coming decades makes the recycling of spent li-ion batteries an important topic to develop. Recycling spent li-ion batteries is necessary to extract valuable materials from the battery cathode. Elutriation is one of the separation method to separate the cathode and anode from the blackmass resulting from crushing by utilizing differences in density and terminal velocity. The Elutriation method is attractive to develop because the separation is done by adjusting the fluid velocity and does not use chemicals. In this study, 4 variations of fluid load will be used, namely 24, 27, 30, and 34 mL/min. The blackmass to be elutriated has a size variation between -38 to +53 micrometers. From the results under the elutriator, the cathode mass obtained for fluid load variations of 24, 27, 30, and 34 mL/min are 0.8366, 0.4333, 0.3907, and 0.1349 grams. The highest cathode recovery at a load of 24 mL/min is 97.21% and the cathode fraction is 0.4091. Furthermore, it can increase the cathode composition in the mixture by 48.98% and reduce the anode composition by 18.54%.
Co-Authors Afdalia, Tiara Agus Prasetya Agus Syahrani Andi Fitriani Djollong Angrum, Alna Triskaya Aprilianto, Doni Riski Aqmarin, Ifni Arifin, Ardian Asfar, Dedy Ari Azmi, Chairanda Al Bernadetha Nadeak Bina, Risa Masdania Kartika Cakranegara, Pandu Adi Chandra Wahyu Purnomo Dany Try Hutama Hutabarat Darnita, Darnita Debora Demitra Devi, Kharisma Diman, Paul Dwisetyo, Vici Erisyerico, Mimo Lalito Fadillah, Farika Asna Fajar Fajar Gazali Salim Hary Sulistyo Hasanah, Nunur Hasby, Nazar Hery Widijanto Himawan Tri Bayu Murti Petrus Hinode, Hirofumi Holten Sion, Holten Ilham Ilham Ilham Ilham Islamiah, Neneng Iswandi, Rizky Joni Bungai, Joni Juwita, Nadilla Rahma Kaharap, Mongga Karani, Elannari Karani, Elanneri Kathryn, Morse Kinanti, Divita Hayyu Kristanoval, Kristanoval Kriswantara, Glory Lazarus Linarto Linarto, Lazarus Linggua Sanjaya Usop Lubis, Lili Kahirina Azhari Lubis, Rafly Aulia Manurung, Mangaraja Marhaban, Saiful Maria Arina Luardini Maria Arina Luardini Mas'ud Muhammadiah Maulina, Evaf Misrita Misrita, Misrita Muh. Wahyu Syabani Mustika, Pra Cipta Buana Wahyu Nadila, Indriani Najmiah, Lailatun Nasution, Adenisya Natalina Asi, Natalina Natasya Nita, Lisa Afria Noviasi Nur Muttaqien Zuhri Nurhasanah Nurhasanah Nurwidyaningrum, Kristanti Nuryoto Oscar, Scherschligt Panut Mulyono Pasaribu, Liza Umami Pattiasina, Petrus Jacob Paulina, Novely Esterika Petrus Jacob Pattiasina Petrus Poerwadi Pradnya Paramitha, Putu Elvira Pratiwi, Irda purwaka, albertus Putri, Julia Rahma Putri, Nelliza Rahman, Muhammad Irfan Rahmat Winata Ramadani, Fitra Ratna Pancawati Ristati, Ristati Rizaldi, Muhammad Rochmadi Rumondang, Rumondang Salam, Agus Sanjaya Usop, Linggua Sari, M. Alpian Sasmithae, Lia Sedyatama, Deska Anggrait Silalahi, Juniar Tiurma Uli Silvianti, Annisa Sinuraya, Jusak Kencana Siregar, Fazriana Siti Arnisyah Siti Nurul Aisyiyah Jenie, Siti Nurul Aisyiyah Sitompul, Theresia Friska Damayanti Sitorus, Akmal Satria Alfin Sitorus, Muhammad Aldi Prayuda Slamet Sumardi, Slamet Sriwahyuni, Riza Sujoto, Vincent Sutresno Hadi Supriyadi Supriyadi Suryanaga, Edward Chandra Sutijan Syahrunsyah, Syahrunsyah Syapiq, Mirza Theasy, Yoan Thesaloga, Rino Tri Susilowati Umar, Vebrianti Vandan Wiliyanti Veniaty, Syarah Verawati Verawati Wahyu Imam Santoso Wahyudi Budi Sediawan Wardani Dwi Wihastyanang, Wardani Dwi Warmita, Helena Karunia Weliyadi, Encik Widi Astuti Wijaya, Chandra Ridho Wildan Habibi Yupita, Yupita Zuwandana, Ahmad