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Journal : International Journal of Renewable Energy Development

The Utilization of Water Hyacinth for Biogas Production in a Plug Flow Anaerobic Digester Soeprijanto, Soeprijanto; Warmadewanthi, I Dewa Ayu Agung; Muntini, Melania Suweni; Anzip, Arino
International Journal of Renewable Energy Development Vol 10, No 1 (2021): February 2021
Publisher : Center of Biomass & Renewable Energy, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.2021.21843

Abstract

Water hyacinth (Eichhornia crassipes) causes ecological and economic problems because it grows very fast and quickly consumes nutrients and oxygen in water bodies, affecting both the flora and fauna; besides, it can form blockages in the waterways, hindering fishing and boat use. However, this plant contains bioactive compounds that can be used to produce biofuels. This study investigated the effect of various substrates as feedstock for biogas production. A 125-l plug-flow anaerobic digester was utilized and the hydraulic retention time was 14 days; cow dung was inoculated into water hyacinth at a 2:1 mass ratio over 7 days. The maximum biogas yield, achieved using a mixture of natural water hyacinth and water (NWH-W), was 0.398 l/g volatile solids (VS). The cow dung/water (CD-W), hydrothermally pretreated water hyacinth/digestate, and hydrothermally pretreated water hyacinth/water (TWH-W) mixtures reached biogas yields of 0.239, 0.2198, and 0.115 l/g VS, respectively. The NWH-W composition was 70.57% CH4, 12.26% CO2, 1.32% H2S, and 0.65% NH3. The modified Gompertz kinetic model provided data satisfactorily compatible with the experimental one to determine the biogas production from various substrates. TWH-W and NWH-W achieved, respectively, the shortest and (6.561 days) and the longest (7.281 days) lag phase, the lowest (0.133 (l/g VS)/day) and the highest (0.446 (l/g VS)/day) biogas production rate, and the maximum and (15.719 l/g VS) and minimum (4.454 l/g VS) biogas yield potential.
Bioconversion of Industrial Cassava Solid Waste (Onggok) to Bioethanol Using a Saccharification and Fermentation process Soeprijanto, Soeprijanto; Qomariyah, Lailatul; Hamzah, Afan; Altway, Saidah
International Journal of Renewable Energy Development Vol 11, No 2 (2022): May 2022
Publisher : Center of Biomass & Renewable Energy, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.2022.41332

Abstract

Cassava solid waste (Onggok) is a by-product of the starch industry containing a lot of fiber, especially cellulose and hemicellulose. It has the potential to be converted to bioethanol. This work aimed to evaluate the effect of feedstocks ratio for the optimal bioethanol production via enzymatic and acidic hydrolysis process in a batch fermentation process. The effect of alpha-amylase and glucoamylase activities was studied. The sulfuric acid concentrations in the hydrolysis process in converting cassava into reducing sugar were also investigated. The reducing sugar was then fermented to produce ethanol. Enzymatic and chemical hydrolysis was carried out with the ratio of onggok(g)/water(L), 50/1, 75/1, and 100/1 (w/v). In the enzymatic hydrolysis, 22.5, 45, and 67.5 KNU (Kilo Novo alpha-amylase Unit) for liquefaction; and 65, 130, and 195 GAU (Glucoamylase Unit) for saccharification, respectively of enzymes were applied. The liquefaction was carried out at 90-100⁰C for 2 hours. The saccharification was executed at 65 ⁰C for 4 hours. Meanwhile, the acidic hydrolysis operating condition was at 90-100 ⁰C for 3 hours. The fermentation was performed at pH 4.5 for 3 days. Fourier Transform Infra-Red (FTIR) analysis was conducted to evaluate the hydrolysis process. The highest ethanol was yielded in the fermentation at 8.89% with the ratio of onggok to water 100:1, 67.5 KNU of alpha-amylase, and 195 GAU of glucoamylase. Ethanol was further purified utilizing fractional distillation. The final ethanol concentration was at 93-94%.
Co-Authors Abdurrahman, Nabil Achmad Arifin Achmad Dwitama Karisma Achmad Elsony Achmad Ferdiansyah Adani, Muhammad Afaf Adelhard Beni Reihara Ady Prima A Adyatmoko Wirananto Afan Hamzah, Afan Agung Subyakto Agus Kiswantono Agus Surono Agustiani, Elly Aip Badrujaman Aisha, Nurul Aisoki, Viktor Ali Altway Alif Adi Kaisar Alif Adi Kaisar Alifia, Luluk Altway, Saidah Amirullah Amirullah Amirullah Amirullah Anara, Siti Alicia Andhika, Adi Andita Noor Shafira Anfi Reynikha Fatullah Anfi Reynikha Fatullah Aparamarta, Hakun Wirawasista Apri Nuryanto Ardyono Priyadi Arief Abdurrakhman Ariefin, Dayu Adestamy Arif Wahjudi Arifin, Achmad Arifin, Rizal Arino Anzip Aryani, Ni Ketut Asrori, Mohamad Fakhri Aulia, Anisa Fatma Awaluddin Tjalla Azis, Ahmad Rifky Baiq Firyal Salsabilla Safitri Bima Mustaqim Budi Setiawan Budi Setiawan Budiman, Fajar Ching, Su Jo Christina Tio Trisnasari Citra Rahmadhani Danawati Hari Danawati Hari Prajitno Danawati Hari Prajitno Daniar Fahmi, Daniar Daryanto Daryanto Daryanto Daryanto Dheny Ashari Hasan Dimas Anton Asfani Dimas Fajar U.P. Dimas Fajar Uman Putra Dinal Izzati Dinny Devi Triana Dinny Harnani Dinny Harnani Dwiana Hendrawati Dyah Firdha Amalia Dyah Firdha Amalia Eko Sulistyowati Ema Umilia Enny Zulaika Ervina Rosanita Rohmah Fadillah, Shinta Fajar Arif Widodo Fajar Budiman, Fajar Fauzan Nusyura Fauziah Fauziah Findi Kusuma Wardani Firdaus Firdaus Firdaus, Aji Akbar Fitran, Raidil Fredy Kurniawan Gilang Hari Pratomo Giorgio Rendra Gumelar Gunadin, Indar Chaerah Gurning, Raja Oloan Saut Habibur Rohman Hanny F. Sangian Harits Eka Febrianto Harus Laksana Guntur hasti afianti Herlambang Setiadi Herlambang Setiadi Hermagasantos Zein Hermawan, Muhamad Heru Hermawan, Yoseph Meidyanto Hertiari Idajati, Hertiari Hidayah, Nursipah Husna, Aghnina Camilla I Gusti Ngurah Satriyadi Hernanda I Made Ginarsa I Made Yulistya Negara I.D.A.A Warmadewanthi Ignatius Riyadi Mardiyanto Ignatius Riyadi Mardiyanto Imam Abadi Imam Nursyahied Imam Wahyudi Farid Inayah Wulandari Irene Fransisca T Irma Nurhanifah Fenda Putri Ismit Mado Istiqfarin Istiqfarin Ivan Hanafi Iwan Vanany Jangkung Raharjo Januar Adi Perdana Jatayu, Anoraga Johari Johari Juzma Ilmahur Mawaddah K. Brighton Kamal, Ichsan Kandriasari, Annis Karar Mahmoud Karenina Anisya Pratiwi Karenina Anisya Pratiwi Kemas Robby Firmansyah Kharisma Bani Adam Kusuma, Hendra Siswanto Laila Nur Rahmah Lailatul Qomariyah, Lailatul Lidya Lorenta Sitompul Lilik Fatmawati, Lilik Lily Pudjiastuti, Lily M Yosi Kurniawan M. Ibrahim AH Maharani, Salma Mahendra Wardhana, Mahendra Mahmoud, Karar Maickel Tuegeh Mamat, Abu Bakar Masaji, Marga Mat Syai’in Mauridhi H Purnomo Mauridhi Hery P Mauridhi Hery Purnomo Metika Mega Agata Mikhael Vidi Santoso Moch Revandra Moch. Khoirul Anwar Mochamad Ashari Mochamad Luthfiyansah Mochammad Wahyudi Mochammad Zayyan Difa Fadhillah Mochammad Zayyan Difa Fadhillah Mohamad Dwi Alfaridzi Mohammad Arie Reza Mohammad Herli Muchammad nurif, Muchammad Muhamad Haddin Muhammad Abdillah Muhammad Abdillah Muhammad Abdillah Muhammad Irwan Budianto Muhammad Nurul Hakim Muksin Muksin Mulyadi, Yeyes Muthmainnah, Melania Suweni Muntini Nabila Fara Anindya Nabila Fara Anindya Nanda Dicky Wijayanto Ni Ketut Aryani Ni Ketut Aryani Niniek Fajar Puspita, Niniek Fajar Nurlaili Humaidah Nurlaili Humaidah, Nurlaili Nursalim Nursalim Nurul Maziyah Nurwijayanti Ocy, Dwi Rismi Ontoseno Penangsang Pratikto, Hadi Prihantoro, Constantinus Rudy Prima Dana Wisesa Adiwarna Prohantoro, Rudy Pujiantara, Margo Purwoharjono Purwoharjono Purwoharjono Purwoharjono Putra, Dimas Fajar Uman Putri Selly Mudyawati Putri Selly Mudyawati R, Agus Dudung Rachmad Setiawan Rachmaniah, Orchidea Rahman, Nisrina Amatur Rahmawati, Deti Rakhmat Asrie Wibowo N Reihara, Adelhard Beni Rexy Widya Tauchid Rezi Delfianti Rian Pratama Rina Febriana Risniyani, Andi Evi Risqy Rohmawati Riyan Arthur Rizka Winda Novialifiah Rizky Pratama Putra Rizkylillah, Muhammad Sadam Robby, Barikly Rony Seto Wibowo Rony Seto Wibowo Sabel, Meli Salsabina, Desti Aulia Sashi Agustina Sashi Agustina Sayyida Sayyida Selvi Marcellia Septian Dyah Faristi Septiana, Devika Nurlaela Setiawan, Rachmad Seto Dyana Sugeng Sheptian, Riky Sholichah, Wildatus Sista, Jenny Siti Wulandari Sjamsul Anam Sjarief Widjaja Soebagio Soebagio Subyakto, Agung Sugiyanta, Lipur Suhartono Suhartono Sukardjo, M Suprapto Suprapto Suprapto Surya Dwi Kisdarmawan Suwito Suwito Suwito Suyanto, Suyanto Syamsiar, Syamsiar Tri Widjaja Triastuti, Warlinda Eka Umar Umar Vicky Aditia Tristanto Wahyu Nugroho, Setiadi Dwi Wirawan Wirawan Wulan Maghfiro Zuchrillah, Daril Ridho Zuchrillah, Daril Ridho