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Journal : Journal of Engineering and Technological Sciences

Properties of Hydrochar Derived from Arabica Coffee Agro-Industry Residues under Wet Torrefaction Method Shalihah, Nyakty; Setiawan, Adi; Muhammad, Muhammad; Riskina, Shafira
Journal of Engineering and Technological Sciences Vol. 56 No. 6 (2024)
Publisher : Directorate for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2024.56.6.2

Abstract

This study utilized coffee cherry residues, which is an abundantly available source of biomass in Indonesia. One of the methods to utilize coffee plantation residues effectively is wet torrefaction. This method is well-known as a hydrothermal method, where the biomass conversion process uses liquid as a medium and reactant in the process. The objective of this work was to develop an effective procedure for converting coffee agro-waste into marketable products using hydrothermal technology. The information related to changes in physical and thermal properties were explored in this work. To achieve the research objectives, three main steps were performed, i.e., feedstock preparation, wet torrefaction, and hydrochar characterization. Two types of feedstocks were studied in this work, coffee parchment and coffee pulp. In the wet torrefaction process, each feedstock was treated using two types of solutions, i.e., distilled water and acetic acid, at different concentrations. The reaction was carried out in an autoclave with a pressure of 2 bar (g) and an operating temperature of 130 ℃ for 2 hours. The properties of the hydrochar products were then analyzed using various methods, including bomb calorimetry, SEM, density, TGA-DTG, and hydrophobicity analyses. Overall, the results indicated that the hydrochar produced under acetic acid solution had better characteristics compared to that treated under distilled water. In terms of fixed carbon content and calorific value, the values increased up to 25.3% and 4,603 kcal/kg, respectively. Enhanced hydrophobicity was only observed in the coffee parchment hydrochar, where the average time required to adsorb water was 146.6 s, which can be categorized as strongly hydrophobic.
Co-Authors Abdul Rahman Abdul Rochim Adella Septiana Mugirahayu Aditya Nugraha Putra, Aditya Nugraha Afrianty, Nonie Agam Muarif Agustyani, Anggit Reviana Dewi Ahmad Fikri Ahmad Nayan Aini Nurul Alchalil Alchalil Aldian Umbu Tamu Ama Aldian Umbu Tamu Ama Alfida Tegar Nurani Ali , Auzar Alicia Anggelia Lumbantoruan ALOYSIUS JOAKIM FERNANDEZ Amalia, Dian Rizki Andhika, Yosi Antonius Antonius ARI SUSANTO Ariani, Dwi Setya Armadani, Wika Arnawan Hasibuan Asnaini Asnaini, Asnaini Asnawi Asnawi Asri, Juinda Atina Rahmatalia Auzar Ali Azizah, Ririn Nurul Baidhawi, B Bambang Susanto Baskoro Arie Nugroho Bayu Wijayanto Beni Utomo Christiana Hari Soetjiningsih Christina Maya Indah Susilowati D. B. Nugroho, D. B. Daivi Wardani, Daivi Deassy Siska Delsylia Tresnawaty Ufi Denny Indrajaya Denny Indrajaya Deswita, Yenny Dewi Anisa Istiqomah Dewi Lukitasari Didit Budi Nugroho Dirga, Muhammad Djoko Hartanto E. D. Saputri, E. D. Eko Sediyono Eko Widaryanto Elsa Septyana Endang Sulistyaningsih Fadhli Syamsudin Faldy Tita fatimah Fatimah Fauzi Ahmad Muda Fika Widya Pratama Florentina Tatrin Kurniati Fona, Zahra GUNAWATI, GUNAWATI Haay, Happy Alyzhya Hadiansyah, Muhammad Hanna Arini Parhusip Hari Slamet Trianto Hari Slamet Trianto Hariyadi, Risky Hariyanto Hariyanto Hartiningsih, Tri Heikal, Jerry Henderi . Hendrival, H Henry Junus Wattimanela Hermawan, Yuda Hosseiniamoli, Hadi Idwal, Idwal Ignatius Agus Supriyono Ilham Hizbuloh Irvan Irvan Irwan Sembiring Iwan Setiawan Iwan Setyawan Jain, Vishal Joko Siswanto JT Lobby Loekmono Kartika Budi Utami Karuniawan Puji Wicaksono Kassymova, Gulzhaina Kuralbaevna Keo, Jitro Jemryes Khan, Naseer A. Kholifah, Izzah Nurul Kurniawan, Johanes Dian Kurniawan, Titus Antonius David Larassati, Dian Sukma Leipary, Harfely Leonardo Refialy Leonardo Refialy, Leonardo Leopoldus Ricky Sasongko Lestari, Nor Puji Lilik Linawati Lindin Anderson Litra Diantara Lukman Hakim Lydia Soepriyani Fallo Mahbub, Jamal Maizuar Maizuar Martaliah , Nurfitri masipupu, Frangky Aristiadi Maulidiyah, Nurul Mawaddah Mawaddah, Mawaddah Mbazumutima, Vianney Meydelina, Gloria Migunani Migunani Mitha Febby R. Donggori Mitha Febby R. Donggori Modjo, Marchella Ellena Mohammad Ridwan Muhammad Arif Muhammad Daud Muhammad Muhammad Muliandari, Nadya Mulyawan, Rizka Mustafa Kamal Nafisah Riskya Hasna Natalia Christy Waney Ninda Lutfiani Nugroho, Agung Olivia Rumahpasal Panka Gumilang Pariama, Aprillia Mauren Pertiwi, Indah Ayu Pradani, Wynona Adita Priatna , Wowon Pujayanto Pujayanto Purbaratri, Winny Purwoko, Agus Putra, Trisno Wardy Putri, Almia Permata Putri, Librina Tria Qara, Indra Bagas Qurotul Aini Rachayu, Laras Andriani Rachel Wulan Nirmalasari Wijaya Rahina, Kinanti Shely Raihan, Raudhatul Ramadani, Zein Ramadhana, Varotama Putra Ratna Sari Riana Dewi Ridara, Rina Rifadli D. Kadir Riskina, Shafira Riza, Sativandi Rizqon Hasibuan Robi Kurniawan Romauli Basaria Roy Rudolf Huizen Rozanna Dewi Rudhito, Andy Safina, Putri Anjali Salis, Muhammad Salomina Patty Samudra, Ferdianto Budi Saprudin SARI, EMMA NOVITA Setiawaty, Sri Setivani, Febi Setyono Yudo Tyasmoro Shalihah, Nyakty Shrestha, Ashish Silangit, Tahan Siregar, Widyana Verawaty Siti Nurjannah Sri Suwartiningsih Sudiarso Sudiarso Sulistio Sulistio Supardi Supardi Suryasatriya Trihandaru Sutarto Wijono Syahputri, Riana Syamsul Arifin Tamaela, Jemaictry Tambun, Rondang Tampubolon, Erwin Parluhutan Theo Sarita, Fetriks Theopillus J. H. Wellem Tri Wahyuningsih Tundjung Mahatma Ubaidillah, M. Abi Mahrus Udayana, Cicik Uma Khumairoh Untung Rahardja Untung Rahardja Veronica, Neny Tiara Vikky Aprelia Windarni Vikky Aprelia Windarni Vincentia Pawestri Wahyuni Kristinawati Wattimanela, Henry Junus Wibowo, Mars Caroline Wiguna, Edo Wijayanti, Yunita Puput Windarni, Vikky Aprelia Wisnu Anendya Sekti Yasa Palaguna Umar, Yasa Palaguna Yenusi, Yuni naomi Yulius Yusak Ranimpi Zainuddin Ginting Zulnazri, Z