Article Per Year (5 Year)
p-Index From 2020 - 2025
2.286
P-Index
This Author published in this journals
All Journal Reaktor International Journal of Renewable Energy Development AMALIAH: JURNAL PENGABDIAN KEPADA MASYARAKAT Jurnal Pengabdian Masyarakat: Darma Bakti Teuku Umar ASEAN Journal of Chemical Engineering Jurnal Pengabdian Masyarakat Khatulistiwa REACTOR : Journal of Research On Chemistry And Engineering Dedikasi: Jurnal Pengabdian kepada Masyarakat Journal of Industrial Community Empowerment International Journal of Renewable Energy Development Journal of Clean Technology
Bahlawan, Zuhriyan Ash Shiddieqy
Department Of Chemical Engineering, Faculty Of Engineering, Universitas Negeri Semarang, Indonesia
Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Public Health Social Sciences Other

Published : 15 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 15 Documents
Search

 1   2 
Comparative Study on the Various Hydrolysis and Fermentation Methods of Chlorella vulgaris Biomass for the Production of Bioethanol Megawati, Megawati; Bahlawan, Zuhriyan Ash Shiddieqy; Damayanti, Astrilia; Putri, Radenrara Dewi Artanti; Triwibowo, Bayu; Prasetiawan, Haniif
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.2022.41696

Abstract

One of the microalgae that can be potentially used to produce bioethanol is Chlorella vulgaris, as it is rich in carbohydrates. However, the carbohydrates in C. vulgaris cannot be converted directly into ethanol. This study aimed to investigate the chemical and enzymatic hydrolysis of C. vulgaris, which is subsequently followed by fermentation. The catalysts used in the chemical hydrolysis were hydrochloric acid, sodium hydroxide, and potassium hydroxide, while the enzymes used were the mixture of alpha-amylase + glucoamylase, alpha-amylase + cellulase, and alpha-amylase + glucoamylase + cellulase. The hydrolysate obtained from chemical hydrolysis was fermented through Separate Hydrolysis Fermentation (SHF), while the one from enzymatic hydrolysis was fermented through Simultaneous Saccharification and Fermentation (SSF), in which both processes used S. cerevisiae. After undergoing five hours of enzymatic hydrolysis (using alpha-amylase + glucoamylase), the maximum glucose concentration obtained was 9.24 ± 0.240 g/L or yield of 81.39%.  At the same time and conditions of the substrate on chemical hydrolysis, glucose concentration was obtained up to 9.23 + 0.218 g/L with a yield of 73.39% using 1 M hydrochloric acid. These results indicate that chemical hydrolysis is less effective compared to enzymatic hydrolysis. Furthermore, after 48 hours of fermentation, the ethanol produced from SHF and SSF fermentation methods were 4.42 and 4.67 g/L, respectively, implying that producing bioethanol using the SSF is more effective than the SHF method.
PENINGKATAN NILAI JUAL SINGKONG MENJADI KUE TINGGI PROTEIN DENGAN METODE FERMENTASI BAGI MASYARAKAT DESA SARIREJO Zuhriyan Ash Shiddieqy Bahlawan; Prima Astuti Handayani; Dhoni Hartanto; Ria Wulansarie
Jurnal Pengabdian Masyarakat Khatulistiwa Vol 5, No 1 (2022): APRIL
Publisher : STKIP Persada Khatulistiwa Sintang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31932/jpmk.v5i1.1329

Abstract

ABSTRACTThe majority of the population of Sarirejo Village, District Kaliwungu, work as farmers, and most of the land is planted with cassava plants. Harvested cassava is usually only sold directly to middlemen at low prices. It is necessary to process cassava into food products with high selling value. In this case, the community really needs knowledge and skills, so that the community becomes productive and can increase the income of the community in Sarirejo Village. The purpose of this community service activity is to provide training to the Dasawisma Group, Sarirejo Village, Kaliwungu District on processing cassava into high-protein steamed brownies made from modified cassava flour. The method used in the training is the brownie production process using cassava flour with modified fermentation. Modified cassava flour has better nutritional value. In addition, the production process also requires less labor, shorter time, and produces quality products. Activities include training, practice, and evaluation. Socialization material about the importance of processing cassava into food products that will increase the selling value of cassava and the practice of making steamed brownies to packaging products that are worth selling. Furthermore, mentoring was carried out to the dasawisma group independently so that they could produce steamed brownies and marketing them.Keywords: Cassava, modified flour, fermentation, brownies ABSTRAKMayoritas penduduk Desa Sarirejo Kecamatan Kaliwungu berprofesi sebagai petani dan sebagian besar lahannya ditanami dengan tanaman singkong. Singkong hasil panen biasanya hanya dijual langsung kepada tengkulak dengan harga murah. Perlu adanya pengolahan singkong menjadi produk makanan dengan nilai yang lebih ekonomis. Untuk pengembangan nilai bahan ini, masyarakat sangat membutuhkan pengetahuan dan keterampilan, agar menjadi lebih produktif dan dapat menambah pendapatan masyarakat di Desa Sarirejo. Tujuan kegiatan pengabdian kepada masyarakat ini adalah memberikan pelatihan kepada Kelompok dasawisma Desa Sarirejo Kecamatan Kaliwungu tentang pengolahan singkong menjadi kue brownies kukus tinggi protein berbahan tepung singkong termodifikasi. Metode yang digunakan dalam pelatihan dengan proses produksi brownies menggunakan tepung singkong dengan modifikasi fermentasi. Tepung singkong yang telah dimodifikasi memiliki nilai nutrisi yang lebih baik. Selain itu, proses produksi hanya memerlukan tenaga kerja yang relatif sedikit, waktu pemrosesan yang lebih pendek dan menghasilkan produk yang berkualitas. Kegiatan meliputi pelatihan, praktik, dan evaluasi. Materi sosialisasi mengenai pentingnya pengolahan singkong menjadi produk makanan yang akan meningkatkan nilai jual dari singkong dan praktek pembuatan brownies kukus sampai dengan pengemasan produk layak jual. Selanjutnya dilakukan pendampingan sampai kelompok dasawisma secara mandiri sehingga dapat menghasilkan produk brownies kukus dan pemasarannya.Kata Kunci: Singkong, modifikasi tepung, fermentasi, brownies
PELATIHAN APLIKASI TURNITIN DAN MENDELEY SOFTWARE BAGI MAHASISWA UNNES DALAM RANGKA PENINGKAATAN KOMPETENSI Dhoni Hartanto; Wara Dyah Pita Rengga; Zuhriyan Ash Shiddieqy Bahlawan; Irene Nindita Pradnya; Waliyuddin Sammadikun; Akhmad Sutrisno
AMALIAH: JURNAL PENGABDIAN KEPADA MASYARAKAT Vol. 3 No. 1 (2019): Amaliah: Jurnal Pengabdian Kepada Masyarakat
Publisher : LP2M UMN AL WASHLIYAH

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32696/ajpkm.v3i1.239

Abstract

Di dalam dunia akademik, akademisi tidak pernah lepas dari budaya menulis artikel ilmiah. Baik penulisan artikel untuk mengikuti suatu lomba, memenuhi tugas kuliah, menulis laporan penelitian hingga artikel untuk dipublikasikan pada jurnal baik nasional maupun internasional. Permasalahan utama yang dialami penulis serta mitra dalam menuliskan artikel ilmiah adalah masalah orisinalitas, praktik plagiarisme serta penyusunan refrensi. Plagiarisme merupakan salah satu tindak pidana yang mengambil, menerbitkan atau menyatakan sebagai milik sendiri dari orang lain, dalam hal ini hasil dari suatu pemikiran sang pencipta. Praktik plagiarisme dalam penulisan tugas, karya ilmiah, skripsi maupun disertasi masih banyak kita jumpai di kalangan akademisi, baik mahasiswa, guru maupun dosen. Sebelum kegiatan sosialisasi, dilakukan observasi untuk mengetahui tingkat pengetahuan yang dimiliki oleh para peserta tentang penulisan artikel terutama mengenai plagiasi dan penyusunan refrensi. Metode yang dilakukan adalah tanya jawab. Hampir 90% peserta belum mengetahui cara menggunakan Turnitin dan Mendeley dalam penulisan jurnal. Hasil kuisioner mahasiswa sangat puas dengan adanya pelatihan Turnitin dan Mendeley.
Immobilization of Saccharomyces cerevisiae in Jackfruit (Artocarpus heterophyllus) Seed Fiber for Bioethanol Production Zuhriyan Ash Shiddieqy Bahlawan; Megawati Megawati; Astrilia Damayanti; Radenrara Dewi Artanti Putri; Ayu Nur Permadhini; Khoridatus Sulwa; Fahreza Pracenda Felicitia; Anggun Septiamurti
ASEAN Journal of Chemical Engineering Vol 22, No 1 (2022)
Publisher : Department of Chemical Engineering, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ajche.69781

Abstract

Bioethanol is alternative renewable energy typically obtained from glucose through a fermentation process using Saccharomyces cerevisiae. In the bioethanol fermentation process using yeast, there are several inhibiting factors, such as a high concentration of substrate, ethanol as the product, and nutrients. The present study aimed to investigate the effect of fermentation time (12- 72 hours), immobilized carrier size (sizes of 0.5 cm3 , 1 cm3 , and 1.5 cm3 ), and medium pH (3.0, 4.0, and 5.0) on the ethanol fermentation process using immobilized yeast in jackfruit (Artocarpus heterophyllus) seeds and subsequently to compare its performance with a free cell system. The highest ethanol concentration (89.15 g/L) with a yield of 96.92% was obtained by immobilizing yeast in jackfruit seed at a fermentation time of 72 hours, carrier size of 0.5 cm3 , and medium pH of 5.0. When compared to the free cell system fermentation under identical operating conditions, immobilized yeast in jackfruit seed obtained 1.41 times higher ethanol concentration. Jackfruit seed also led to a higher ethanol concentration compared to other S. cerevisiae carriers. Altogether, our findings imply that jackfruit seed has great potential as a carrier of S. cerevisiae in the process of fermenting glucose into ethanol
Hidrolisis Limbah Kulit Pisang (Musa acuminata) Menggunakan Katalis Asam untuk Produksi Bioetanol Zuhriyan Ash shiddieqy Bahlawan; Megawati Megawati; Bayu Triwibowo; Alfiansyah Aji Pratama; Zefanya Pradiza; Anggun Septiamurti
REACTOR: Journal of Research on Chemistry and Engineering Vol 3, No 1 (2022): Published in June 2022
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52759/reactor.v3i1.45

Abstract

Banana is one of the fruits that can thrive in Indonesia. This plant is often found in tropical soils with slightly moist soil conditions. However, banana peels are underutilized and are only disposed of as agricultural waste. On the other hand, the carbohydrate content of banana peels is still quite high, reaching 12.2% so it can be used as raw material for making bioethanol. Carbohydrates in the substrate cannot be directly converted into bioethanol but need to be pretreated first to break down polysaccharides into monosaccharides. In this research, the pretreatment process of carbohydrate hydrolysis from banana peels into reducing sugars is studied. From the studies, the reducing sugar concentration was obtained with banana peels substrate concentration of 20 g/L, 5 M of sulfuric acid concentration, and an optimum hydrolysis time of 70 minutes with the obtained reducing sugar reach 16.82 g/L. Reducing sugar can be converted into bioethanol by fermentation process with S. cerevisiae yeast. It is hoped that these studies can provide an initial impact on the development of alternative energy based on biomass and utilization of banana peel waste.
Implementasi Digital Marketing dalam Meningkatkan Strategi Pemasaran Produk UMKM di Kelurahan Mangunharjo Kota Semarang Zuhriyan Ash Shiddieqy Bahlawan; Megawati Megawati; Bayu Triwibowo; Haniif Prasetiawan; Dwi Prasojo; Fauzan Amrullah; Dyta Silvia Mayasari
Journal of Industrial Community Empowerment Vol 2, No 2 (2023): Published in October 2023
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52759/jice.v2i2.210

Abstract

Micro, Small and Medium Enterprises (MSMEs) in Indonesia are the largest business units that support the country's economy. In Mangunharjo District, Tugu District, Semarang City, there are several groups of MSMEs which are mainly engaged in the food processing industry. However, MSME owners face various challenges, such as a lack of marketing methods. As a result, many MSMEs only produce food products when there is an order and rely on consignment at the nearest shop for a limited period of time. This problem requires a solution that can overcome the concerns of MSME owners, one of which is by changing marketing methods. Currently, MSMEs in the regions only rely on traditional marketing methods. By holding training activities for the public about the benefits of digital marketing, it is hoped that MSME owners can change their perspective and adopt more modern marketing methods. Through evaluations carried out after training, the MSME group has started to utilize digital platforms to market their products. The results show that MSMEs are starting to get used to digital marketing to increase sales value.
Comparative Study on the Various Hydrolysis and Fermentation Methods of Chlorella vulgaris Biomass for the Production of Bioethanol Megawati Megawati; Zuhriyan Ash Shiddieqy Bahlawan; Astrilia Damayanti; Radenrara Dewi Artanti Putri; Bayu Triwibowo; Haniif Prasetiawan
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.2022.41696

Abstract

One of the microalgae that can be potentially used to produce bioethanol is Chlorella vulgaris, as it is rich in carbohydrates. However, the carbohydrates in C. vulgaris cannot be converted directly into ethanol. This study aimed to investigate the chemical and enzymatic hydrolysis of C. vulgaris, which is subsequently followed by fermentation. The catalysts used in the chemical hydrolysis were hydrochloric acid, sodium hydroxide, and potassium hydroxide, while the enzymes used were the mixture of alpha-amylase + glucoamylase, alpha-amylase + cellulase, and alpha-amylase + glucoamylase + cellulase. The hydrolysate obtained from chemical hydrolysis was fermented through Separate Hydrolysis Fermentation (SHF), while the one from enzymatic hydrolysis was fermented through Simultaneous Saccharification and Fermentation (SSF), in which both processes used S. cerevisiae. After undergoing five hours of enzymatic hydrolysis (using alpha-amylase + glucoamylase), the maximum glucose concentration obtained was 9.24 ± 0.240 g/L or yield of 81.39%.  At the same time and conditions of the substrate on chemical hydrolysis, glucose concentration was obtained up to 9.23 + 0.218 g/L with a yield of 73.39% using 1 M hydrochloric acid. These results indicate that chemical hydrolysis is less effective compared to enzymatic hydrolysis. Furthermore, after 48 hours of fermentation, the ethanol produced from SHF and SSF fermentation methods were 4.42 and 4.67 g/L, respectively, implying that producing bioethanol using the SSF is more effective than the SHF method.
Bioethanol Production from Rice Straw through Utilization of Agrobiomass Waste in Central Java Towards Clean Energy: a Review Nisrina Hasna’ Nabil; Pratama Senapati Bagus Handoko; Fitri Wahyuningtyas Destantri; Adhika Bintang Syahputra; Zuhriyan Ash Shiddieqy Bahlawan
Journal of Clean Technology Vol. 1 No. 1 (2024): February 2024
Publisher : Universitas Negeri Semarang

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

Abstract

Bioethanol is an alternative energy to replace fossil fuels from plants. Central Java is the second largest rice producer in the world in Indonesia, with the potential of rice straw waste which can be optimized into bioethanol. Rice straw contains abundant cellulose reaching 32-47%, hemicellulose reaching 19-27%, and lignin reaching 5-24%. Methods for making bioethanol from rice straw include pretreatment, hydrolysis, fermentation, and distillation. Lignin inhibits acid penetration before hydrolysis and microbial growth during fermentation, so it needs to be eliminated using alkaline pretreatment. Glucose production from alkali-pretreated rice straw can be hydrolyzed using chemical or enzymatic catalysts. Acid hydrolysis method using dilute H2SO4 with consideration of a shorter operating time. In addition, the price of enzymes is very high, and the operating time is very long, which will reduce product effectiveness. The acid hydrolysis method using 2% H2SO4 takes 30 minutes at 150 oC, which can produce a yield of 16%. Production of bioethanol from rice straw using separate hydrolysis and fermentation (SHF) methods. Saccharomyces cerevisiae, with a 24-hour fermentation time, produced a yield of 80.9% and a productivity of 0.172 g/L h. Distillation is used to remove impurities from liquids that have been polluted with rice straw-derived solutes with various boiling points. Vacuum distillation can produce a yield of 40% purity. Utilization of rice straw into bioethanol can reduce environmental pollution so that it supports clean energy.
Zero Waste Education Organic Waste Treatment For Students ofSD N Petompon 3, Semarang, Indonesia Irene Nindita Pradnya; Maulida Zakia; Zuhriyan Ash Shiddieqy Bahlawan; Kakalia Putri Auralita; Achmad Wikandaru; Daffa Nur Muhammad
Journal of Clean Technology Vol. 1 No. 2 (2024): August 2024
Publisher : Universitas Negeri Semarang

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

Abstract

SDN Petompon 3 in Semarang faces challenges related to inadequate facilities and poor environmental sanitation due to improper waste management. To address these issues, a community service program has been initiated. The program aims to educate 5th and 6th-grade students about organic clean waste management using Black Soldier Fly larvae (maggots). Through this program, students are taught how to sort, recycle, and process organic waste. They are also directly involved in practical waste management activities at the school. The primary objectives of this program are to raise students' environmental awareness and encourage them to become agents of change. Additionally, the program aims to address the issue of organic waste management in the school by utilizing the effective waste decomposition capabilities of Black Soldier Fly larvae. The resulting products from the organic waste processing, such as pupae, can be used as animal feed or as raw materials for organic fertilizer. The program also includes an entrepreneurship development component. Students are taught packaging, branding, and marketing skills to run small businesses. It is hoped that students can develop entrepreneurial skills and create sustainable business opportunities. The program is carried out through several stages, including coordination with the school, preparation of tools and materials, and the implementation of socialization and practical activities. Through this program, it is expected that environmental problems at SDN Petompon 3 can be gradually resolved and increase students' awareness and active participation in maintaining environmental cleanliness.
Diversifikasi Olahan Susu Sapi Segar Menjadi Produk Kefir untuk Minuman Probiotik dan Masker Wajah di Kelurahan Plalangan Gunungpati Semarang Prasetiawan, Haniif; Triwibowo, Bayu; Kusumaningtyas, Ratna Dewi; Bahlawan, Zuhriyan Ash Shiddieqy; Widyastuti, Catur Rini
Jurnal Pengabdian Masyarakat: Darma Bakti Teuku Umar Vol 4, No 2 (2022): Juli-Desember
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/baktiku.v4i2.5691

Abstract

Plalangan Village is one of the villages that produce fresh cow's milk in the administrative area of Gunungpati District, Semarang City, Central Java Province. The average daily activity of residents of Terwidi Village RT02 RW04, Plalangan Village, Gunungpati District, Semarang City in particular is raising cattle. The number of cattle breeders is 40 people who are members of the Ngudi Rahayu Terwidi Dairy Cattle Group (KTSP). The current number of cows is 75 heads, much lower than 5 years ago. The decline in the number of cows is due to the fact that they think that a dairy business that only relies on dairy products does not provide a steady income. Even though there is a lot of potential that can be developed from the dairy cattle business, including the diversification of dairy products. Kefir is a heterofermentative fermented product that has a taste, color and texture that resembles yogurt and has a distinctive aroma like tape. Kefir products circulating in the community today are not only consumed as probiotic drinks but can also be used as cosmetic products, such as masks. The main program will be carried out by the Community Service (PKM) team by empowering dairy cattle businesses through diversification of fresh cow's milk products to become high-value products, namely kefir which can be used as probiotic drinks and face masks.
Co-Authors Abdurrafi, Faishol Achmad Wikandaru Adhika Bintang Syahputra Akhmad Sutrisno Alfiansyah Aji Pratama Amrullah, Fauzan Anggun Septiamurti Anggun Septiamurti Astrilia Damayanti Astrilia Damayanti Ayu Nur Permadhini Bayu Triwibowo Bayu Triwibowo Catur Rini Widyastuti, Catur Rini Daffa Nur Muhammad Damayanti, Astrilia - Dewi, Yasinda Verrel Dinara Shinka Dhoni Hartanto Diana, Savira Rahma Dillah, Shohib Qomad Dwi Prasojo Dyta Silvia Mayasari Fahreza Pracenda Felicitia Fandika, Putri Maharani Adinda Fauzan Amrullah Fitri Wahyuningtyas Destantri Haniif Prasetiawan Harianingsih, Harianingsih Hutomo, Gayuh Aditya Imani, Nadya Alfa Cahaya Imanullah, Kautsar Taqi Irene Nindita Pradnya Irene Nindita Pradnya Kakalia Putri Auralita Khoridatus Sulwa Kristi, Silvia Yolanda Maharani Kusumaningrum Maulida Zakia Maulida Zakia Mayasari, Dyta Silvia Megawati Megawati - Megawati Megawati Megawati Megawati Megawati Megawati Megawati Megawati Muna, Mochammad Choiril Nisrina Hasna’ Nabil Permanadewi, Indrasukma Pradnya, Irene Nindita Pramitha, Deva Aurelya Prasetyo, Ridwan Anung Prasojo, Dwi Pratama Senapati Bagus Handoko Pratama, Muhammad Herdi Pratiwi, Kharisma Ardhani Nur Prima Astuti Handayani Radenrara Dewi Artanti Putri Radenrara Dewi Artanti Putri Radenrara Dewi Artanti Putri, Radenrara Dewi Artanti Ratna Dewi Kusumaningtyas Ria Wulansarie, Ria Sadan, Serlia Fitri Salsabila, Luvena Suwandi, Luluk Arvi Cahyaning Syahputra, Adhika Bintang Waliyuddin Sammadikun Wara Dyah Pita Rengga Wati, Afifah Sagita Fitria Zain, Faatin Nisriinaa Zefanya Pradiza