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Journal : Communications in Science and Technology

 1 
Effect of microwave and ultrasonic irradiation on the enzymatic hydrolysis of water hyacinth biomass in the presence of surfactants Rokhati, Nur; Ratnawati; Prasetyaningrum, Aji; Anggraini, Widyah; Nugroho, Akbar; Novita, Nasyriyatul Hana; Andarani, Pertiwi; Riyanto, Teguh
Communications in Science and Technology Vol 8 No 1 (2023)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21924/cst.8.1.2023.1143

Abstract

This paper presents the effect of microwave and ultrasound irradiation on the enzymatic hydrolysis of water hyacinth biomass in the presence of surfactants. Prior to hydrolyzing, the water hyacinth was treated utilizing alkali with and without microwave assistance. It was revealed that the microwave improved the removal of lignin and hemicellulose. The treated water hyacinth biomass was also characterized using Scanning Electron Microscope (SEM), X-ray Diffraction (XRD), and Fourier-Transform Infrared (FT-IR) Spectroscopy. The effect of surfactant and the assistance of microwave and ultrasound were comprehensively studied. Some parameters varied, including stirring speed, surfactant type, concentration, and reaction time. The results indicated that microwave and ultrasound could enhance the reaction rate. Tween 80 here could improve conventional, microwave-assisted, and ultrasound-assisted hydrolysis of water hyacinth biomass. It was found that the ultrasound-assisted hydrolysis was better than that of others. The results of this research can be used as the groundwork for further developing the lignocellulosic biomass hydrolysis process, especially in an advanced enzymatic hydrolysis process.
Utilization of glycerol solution for hydrogen production by a combination of photocatalysis and electrolysis processes with Fe-TiO2 nanotubes Santoso, Calvin; Ratnawati; Slamet
Communications in Science and Technology Vol 8 No 2 (2023)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21924/cst.8.2.2023.1280

Abstract

A combination of photocatalysis and electrolysis (photoelectrocatalysis) for the simultaneous degradation of glycerol and hydrogen production using Fe-TiO2 nanotubes has been studied. This photocatalyst was synthesized through Ti anodization followed by Fe deposition with Fe(NO3)3 as precursor using the SILAR (successive ionic layer adsorption and reaction) method. The effects of Fe loading (based on the number of SILAR cycles) on TiO2 nanotubes and glycerol concentration were examined. The generated TiO2 nanotubes were 100% anatase phase with crystallite size between 25 and 29 nm. The results of UV-Vis DRS showed that the number of SILAR cycles of Fe dopant determined the magnitude of the decrease in the band gap of photocatalysts up to 2.74 eV, notably lower than a typical value of 3.15 eV associated with TiO2 anatase. FESEM/EDX, TEM, and HRTEM characterizations indicated the formation of neatly arranged TiO2 nanotubes with Fe deposited on the surface. The photoelectrocatalytic process increased the hydrogen produced by up to 5 times compared to a single photocatalytic or electrolysis process. The photocatalyst sample with Fe deposited on TiO2 nanotubes via a SILAR method with 15 cycles outperformed its bare TiO2 nanotube counterpart by producing hydrogen by 2.5 times (405.8 mmol/m2). Glycerol photo-reforming at 10% concentration produced hydrogen 6 times greater than water splitting (0% glycerol).
Simultaneous photoelectrocatalytic hydrogen production and ammonia degradation using titania nanotube-based photoanodes Elysabeth, Tiur; Dewi, Eniya Listiani; Ratnawati; Mulia, Kamarza; Slamet
Communications in Science and Technology Vol 9 No 2 (2024)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21924/cst.9.2.2024.1464

Abstract

The primary focus of this research is to enhance the efficiency and effectiveness of the photoanode based of titania nanotubes in the photoelectrocatalytic process, which enables the simultaneous generation of hydrogen and degradation of ammonia. The modification process involved the incorporation of nitrogen dopant during anodization and sensitization of CuO through Successive Ionic Layer Adsorption Reaction (SILAR). The results of this study showed that the introduction of N dopant led to a significant enhancement in both the ammonia elimination and the hydrogen production, as evidenced by 3N-TiNTAs achieving 74.4% and 561 mmol/m2, respectively. Meanwhile, the highest hydrogen production was observed with 7CuO-TiNTAs at 910.14 mmol/m2. The study revealed that N-TiNTAs exhibited superior performance in ammonia degradation; while CuO-TiNTAs showed higher hydrogen production rates. Furthermore, the mechanistic aspects of the study were also thoroughly examined.
Microwave-assisted extraction of eco-friendly surfactant from Jatropha curcas for sustainable solubilization of reactive dyes Aryanti, Nita; Khoiriyah, Lu'luatul; Nafiunisa, Aininu; Ratnawati; Widiasa, I Nyoman; Zakki, Abdurrahman; Adina, Alifia Rizki
Communications in Science and Technology Vol 10 No 1 (2025)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21924/cst.10.1.2025.1636

Abstract

Natural surfactants derived from plant-based sources, such as saponins, remain underexplored. This study developed the extraction of saponins from Jatropha curcas leaves using microwave-assisted extraction (MAE) finding that the optimized condition of 3 min, 363.15 K, 30 mL/g ratio of extraction yielded the highest saponin content of 35.04 mg/g. The FTIR and HPLC analyses confirmed the structural similarity between the extract and commercial saponin. Additionally, the extracted saponins effectively solubilized Remazol Red RB and Blue TQ with solubilization efficiency increasing proportionally to the surfactant concentration. The surfactant properties of the extracted saponin were also confirmed by its ability to form foam and high critical micellar concentration, which revealed the potential for material valorization. This work demonstrated that the development of plant-based surfactants provides a sustainable alternative to synthetic surfactants. Moreover, valorizing natural materials contributes to the advancement of eco-friendly technologies, particularly in waste treatment and water purification applications.
Co-Authors Abdul Kholil ABDUL RACHMAD BUDIONO ACHMAD DZAKI FIKRI MUSAKKIR Ade Risna Sari Adil, Andi Adina, Alifia Rizki Agustini, Rina Ahmad Riska Arista Ahmad Yani Ahmadi Miru Ahnaf, Shofa' Salsabila Aini, Nurfauziah Aisyah Dzil Kamalah, Aisyah Dzil Aji Prasetyaningrum Albab Al Umar, Ahmad Ulil Alfan Hadi Ambo Ala, Alamsyah AMINA RAHMAD AHMAD Aminah, Lutik Aminatus Zakhra Amirul Haq Ana Novitasari Ananda Anugrah Pamungkas ANDI MUHAMMAD ASWIN ANAS Andi Muhammad Barkah Ambarsyah Andi Nurul Yusfiana ANDI PAIDA Andi Paida, Andi Andi Suci Wahyuni Andi Sukri Syamsuri Andri C. Kumoro Andrian Ramadhani Anggraini, Widyah Anjani, Dianita Dewi Annisa Anwar, Asni Apriadi Danial, Mirdad Apriana, Rista Ardhika Ratri, Jessie Arfan Arif Mahya Fanny Aryanti Ashar Asmitha Purnama Sari Asmuni Asriyani Aulia Eka Putri Aulia Khairunnisa Aulia, Ananda Ayu Agus Tya Ningsih AYU LESTARI Azainil Azainil Azizah Retno Kustiyah Badariyah Baiti, Noor Barim, Nuranisah Benny Sigiro Binsamaae, Suhaila Bisinda, Sultan Brantasari, Mahkamah Budiman Budiwati Cahya Adi Ramadhani Catarina S. Budiyati Chandra Fitra Arifianto Daddi, Herlina Dadi Dafid Datu, Madonna Damayanthie deppatoro, aliamri Deri, Vivi Mutia Dewi Murni Dhiya Magfirah Diah S. Retnowati Didih Faridah, Didih Dila Dormido, Yasmin Pascual Dwi Novri Asmara Dwi Novri Asmara Dwiyono, Yudo Efendi, Raimon Effendi, Subhan Eka Firmansyah Pratama Ekariani Elli Elly Noerhidajati Eniya Listiani Dewi Eny Syatriana Erlina Waruwu Ernamawati Zai, Vesni Estika Hader, Antik Estu Prasetyo, Dian Eti Putri Pratama Sanjaya Fachry Abda El Rahman Faiqah Luthfiyah Fenriyati Falah, Fakhriatul Falah Farida Febrianti Farida Febriati Fatimah, Ai Tusi Feby Kharisna Feren Pratiwi Pomalingo Filbert Ivander Fina Andriani Firdaus , Andi Mulawakkang Fitri, Nursya FITRIANTI Gawarti Gunawan Ali Hadizha, Aulya Hamid, M. Arfin Hamid, Muhammad Akbar Hamidi Masykur Hana Hana Nafiah, Hana Harum Sari, Stefani Hasanuddin, Nurul Qurani Hasmalia Hasrul, Muh Hendy Tannady Herlinawati Priskadewi Hestiaty Husain, Alamsyah Ambo Ala I Nyoman Widiasa Ida, Nuraida Latif Ida, Nuraida_Latif Idat, Jessica Ambarwati If'all, If'all Ilham Ahmad Imamah, Waode Andi Nurul Indra Syam Inka Irfan Isdhianto Irnawati Ismatud Diyanah Isniawati Isro Ningsih, Rindi Ivonne Ayesha Iwan Henri Kusnadi Jamal Aslan Januriwati, Lina Jasin, Moch Jaya, Kasman Jazuli Mukhtar Jennieka Salsabila Joko Wahyu Wibowo JUMIAH Jumriani Kamarza Mulia, Kamarza Kartin Buheli Khafi Fatul Insani Khoiriyah, Lu'luatul Kiki Fatmala Kudrat Sunandar Latifa, Annisa Lellyawaty Lengkong, Edo Edoardo LESTARI INDAH, AYU Linda Adriani Linda Aliffia Yoshi, Linda Aliffia M. Cece Ariwirdana M., SYAWIRAH Maksum, Choiril Marlina Indrastari Marlina, Armi Marwiah Marzuki, Fathurrahman Maskun Maulidyananda, Galuh Meli Ariana MERDEKAWATI DJAFAR, EKA Mirdad Apriadi Danial Mufida Muh. Ali Imran Muhadar MUHAMMAD ASWIN ANAS, ANDI Muhammad Ramli Ahmad Muliani Munirah Muryid Yahya Musba, Takdir Mustiani Mutmainna Mutmainnah Nafiunisa, Aininu Nahdhatul Hayati Nanang Nita Aryanti Novia Rahmawati Novita MZ Novita, Nasyriyatul Hana Nugroho, Akbar Nur Afni Ahmad Nur Asia Nur Azlinda Nur Rokhati Nur, Imami Nurani, Desi Nurazizah Nurbaya Nurdin, Haizah Nurfaidah Nurhasanah Nurhidayati , Siti Nurlianti Nurmila Nurnaeni, Yeni Nurtinasri Nuryani, Elis Panca Seputra, Yulius Pebriani Permana, Sherly Pebriani, Alfina Pertiwi Andarani Pomalingo, Feren Pratiwi Pupun Nuryani Purnama Indah, Rika Putri, Dhara Atika Rahadyan Tajuddien Rahmayati HM Rasti Amalia Ratnasari Regita Cahyani Regita Maulinda Rezki Nur Aoliah Rhenita Suci Anggriani Rian Hidayat Rika Purnama Indah Rini Fitriani Rini Indayani Riska Vianti RITA Riyanto, Teguh Rizqi Id-hul Fitri Rizqy Robby Kharisma Rohayati Arifin Rois Mahfud Setiawan Rokaiyah Rusli Malli Rusnani Ryant Abdillah Dewi P Sabariyah, Sitti Salahuddin, Andi Samsul Hakim Santoso, Calvin Saragih, Afni Eliana Sarinah Sarniati Satriani Is, Sitti Satya Nugraha, Eva Sebastian Septa Tri Rahmat Septia Ika Ningsih Seubelan, Sartiny Sihombing, Odollar Silvia Siregar, Ade Perdana SITI AMINAH Siti Aminah Siti Suwadah Rimang, Siti Suwadah Situmorang, Murni Slamet Slamet Widodo Sofiatul Mu'awanah Sonia Yulia Friska Sri Eka Lestari Sri Rahmah, Mega Sri Rezki Sri Sudewi St Rajiah Rusydi St Zulaikha Hidayat St. Ramlah Suci Rahma Putri Suci Wahyuni, Andi Sudarsono Sukida Suniati Suparyo, Yasman Suryanti, Delvi Susilawati Suwitra, I Ketut Syafiqah , Nabila Rana Syafri Kamsul Arif Syafruddin Gaus Syahrida Wahyu Utami Syahruddin SYAHWIAH, ANDI Tahier, Ilham Taufik, Herman Thoyyibah, Luthfiyatun Titis Dwi Hidayati Tiur Elysabeth Tusriyah Wahyu Nurul Faroh WAHYUDI Wahyudin Wahyudin Widia Widia Fiantika Widya Apriliah Wijaya, Charles Wiranti Wirawan, Nur Surya Wisda Wiwie Heryani Wiwit Yohana, Adila Yudi Haliman Yulia Safitri Yulice Soraya Nur Intan Yunadi, Rika Yuyun Taufik Zainuddin, Siti Zakki, Abdurrahman