Zobrazeno 1 - 10
of 111
pro vyhledávání: '"Achmad Roesyadi"'
Autor:
Zulnazri Zulnazri, Rozanna Dewi, Agam Muarif, Ahmad Fikri, Herman Fithra, Achmad Roesyadi, Hanny F. Sangian, Sagir Alva
Publikováno v:
Polymers, Vol 16, Iss 13, p 1866 (2024)
This paper presents an approach for hydrolyzing cellulose nanocrystals from oil palm empty fruit bunch (OPEFB) presented through hydrochloric acid hydrolysis under sonication–hydrothermal conditions. Differences in concentration, reaction time, and
Externí odkaz:
https://doaj.org/article/4be596df87224d33b22c6944226db790
Autor:
Nyoman Puspa Asri, Siti Machmudah, W. Wahyudiono, S. Suprapto, Kusno Budikarjono, Achmad Roesyadi, Motonobu Goto
Publikováno v:
Bulletin of Chemical Reaction Engineering & Catalysis, Vol 7, Iss 3, Pp 215-223 (2023)
Non catalytic transesterification in sub and supercritical methanol have been used to produce biodiesel from palm oil and soybean oil. A kinetic study was done under reaction condition with temperature and time control. The experiments were carried o
Externí odkaz:
https://doaj.org/article/3c50eb0eb4e74a99911f3c5b1b0d3fba
Autor:
Lenny Marlinda, Danawati Hari Prajitno, Achmad Roesyadi, Ignatius Gunardi, Yustia Wulandari Mirzayanti, Muhammad Al Muttaqii, Agus Budianto
Publikováno v:
Eclética Química, Vol 47, Iss 1, Pp 17-39 (2022)
The effects of reaction temperature on the hydrocarbon composition of biofuel produced in hydrocracking of Cerbera manghas oil with Ni-Zn/HZSM-5 catalyst were investigated. The incipient wetness impregnation method was applied to prepare the Ni-Zn/HZ
Externí odkaz:
https://doaj.org/article/20870885266140d3aaa0d105b7d90432
Publikováno v:
International Journal of Technology, Vol 11, Iss 4, Pp 764-773 (2020)
As more delignification is targeted, fiber degradation becomes a main issue in the pulping process. Sodium hydroxide (NaOH) is highly related to pulp quality in the medium consistency oxygen delignification process. Accordingly, the purpose of th
Externí odkaz:
https://doaj.org/article/77a6eb0229ce406d8fc1a3d65b6bc0d2
Publikováno v:
Berkala Sainstek, Vol 8, Iss 3, Pp 89-95 (2020)
Keterbatasan bahan bakar fosil sebagai salah satu sumber energi yang tidak dapat diperbarui di Indonesia menjadikan wacana untuk menciptakan sumber alternatif dari bahan baku lain yang jumlahnya masih melimpah dan dapat diperbarui. Salah satu bahan b
Externí odkaz:
https://doaj.org/article/d8239a6ff2a84bbd86e56182fa6d8cab
Publikováno v:
Berkala Sainstek, Vol 8, Iss 3, Pp 84-88 (2020)
Catalytic cracking dan hydroprocessing merupakan dua proses yang digunakan untuk mengubah minyak nabati menjadi biofuel, gabungan dari kedua proses tersebut dinamakan reaksi hydrocracking. Minyak bintaro yang bersifat non-edibleoil serta memiliki kad
Externí odkaz:
https://doaj.org/article/e9bf3cdc4dec4e6f90aeaa2d00105ccd
Autor:
H Hadiyanto, Apsari Puspita Aini, Widayat Widayat, Kusmiyati Kusmiyati, Arief Budiman, Achmad Roesyadi
Publikováno v:
International Journal of Renewable Energy Development, Vol 9, Iss 1, Pp 119-123 (2020)
Biodiesel can be produced from various vegetable oils and animal fat. Abundant sources of vegetable oil in Indonesia, such as Calophyllum inophyllum, Ricinus communis, palm oil, and waste cooking oil, were used as raw materials. Multi-feedstock biodi
Externí odkaz:
https://doaj.org/article/0b5ab6f248894e1ea707464593ef2303
Publikováno v:
Bulletin of Chemical Reaction Engineering & Catalysis, Vol 14, Iss 2, Pp 309-319 (2019)
In this study, hydrocracking of coconut oil over Ni-Fe/HZSM-5 catalyst was carried out in a batch reactor under different reaction temperature. Coconut oil is proposed as one of the potential feedstock for biofuel production. The Ni-Fe/HZSM-5 catalys
Externí odkaz:
https://doaj.org/article/09dce9f0d458418ea64408edef1c286a
Publikováno v:
Indonesian Journal of Chemistry, Vol 19, Iss 2, Pp 319-327 (2019)
This present study was aimed to investigate the hydrocracking of coconut oil using Ni-Fe/HZSM-5 catalyst in a batch reactor at three reaction temperatures (350, 375, and 400 °C). The Ni-Fe/HZSM-5 catalyst was prepared by using incipient wetness impr
Externí odkaz:
https://doaj.org/article/3ceac149306b45b4a8abee1f6390b17c
Publikováno v:
Bulletin of Chemical Reaction Engineering & Catalysis, Vol 13, Iss 2, Pp 196-203 (2018)
The purpose of this research are to study the temperature influence in hydrocracking process of the nyamplung oil (Calophyllum inophyllum) using a non-sulfided CoMo/γ-Al2O3 catalyst and to develop a simple kinetic model in interpreting the data of h
Externí odkaz:
https://doaj.org/article/114e7f5c6b054fb198495fd812587ee9