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All Journal Proceedings of Annual International Conference Syiah Kuala University - Life Sciences & Engineering Chapter Indonesian Journal of Business and Entrepreneurship (IJBE) Sriwijaya International Seminar on Energy-Environmental Science and Technology
Syaifullah Muhammad
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Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Energy Engineering Environmental Science Other

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Phenol degradation on heterogeneous catalytic oxidation by using cobalt-natural zeolite catalyst Syaifullah Muhammad; Edy Saputra; Shaobin Wang; Moses O. Tadé
Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 1, No 2 (2011): Engineering
Publisher : Syiah Kuala University

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Abstract

Two types of catalysts based on Indonesia Natural Zeolite (INZ) and Australia Natural Zeolite (ANZ) were prepared by impregnation of 5 % of active metal cobalt. The synthesized catalysts were calcined in air at 5500C for 6 hours. The catalysts were then used to degrade phenol concentration in heterogeneous catalytic oxidation with the presence of oxone as peroxymonosulphate source. The catalysts were also characterized by several techniques such as SEM, EDS and N2 adsorption. It was found that Co-INZ and Co-ANZ are effective catalyst in activation of peroxymonosulphate to produce sulphate radicals to degrade phenol concentration. In reaction test of 5 hours, with condition of 25 ppm phenol, 0.2 g catalyst loading, 1 gram oxone, 250C and stirring speed of 400 rpm, Co-INZ and Co-ANZ could reduce phenol up to 100% and 70% respectively. Further, several parameters such as amount of catalyst loading, phenol concentration, oxidant concentration and temperature are found as key factors in phenol degradation. Moreover, based on the trend of phenol degradation following by kinetic study, it was proved that the pseudo first order kinetics would fit to phenol oxidation with the rate constants of 0.0106 and for 0.0033 Co-INZ and Co-ANZ respevtively
Use of G3-DHS Bioreactor for Secondary Treatment of Septic Tank Desludging Wastewater . Faisal; Izarul Machdar; Syaifullah Muhammad; Takashi Onodera; Kazuaki Syutsubo
Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 5, No 1 (2015): Engineering
Publisher : Syiah Kuala University

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Study was done for the use of the third-generation of downflow hanging sponge (G3-DHS) bioreactor for secondary treatment of septic tank desludging wastewater. The main objective of this study was to evaluate the prospective system of G3-DHS bioreactor to be applied in Indonesia. During experiment, the G3-DHS bioreactor kept a relatively high dissolved oxygen concentration under natural aeration. At a relatively short hydraulic retention (HRT) of 3 h, the G3-DHS bioreactor could remove up to 21% (SD = 15%) of total COD, 21% (SD = 7%) of filtered-COD, 58% (SD = 24%) of unfiltered-BOD, and 33% (SD = 24%) of ammonium removal. The final effluent had an unfiltered-BOD of only 46 mg/L (SD = 20 mg/L) that it was below the Indonesian standard (unfiltered-BOD = 100 mg/L) for thresholds of domestic wastewater treatment plants effluent.
Hydrothermal Synthesis of Nanocrystalline Zeolite using Clear Solution Syaifullah Muhammad
Sriwijaya International Seminar on Energy-Environmental Science and Technology Vol 1, No 1 (2014)
Publisher : Sriwijaya International Seminar on Energy-Environmental Science and Technology

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Nano size particles such as nanocrystalline zeolites have unique properties relative to conventional micrometer sized zeolite crystals. The reduction of particle size to the nanometer scale leads to substantial changes in properties of zeolite which make them as promising materials for many applications. Nanocrystalline zeolite A, silicate-1 and ZSM-5 were successfully synthesiszed at temperature of 80-1500C using clear solution in the presence of organic templates. Values of 1.46, 3.06, 4.59 and 6.79 are effective Si/Al ratio to synthesis LTA zeolite. Further, high Si/Al ratio of 30, 40 and 60 were used for ZSM-5 synthesis. The product could be obtained at 1-5 day for zeolite A and ZSM-5 while silicate-1 (aluminum free) could be obtained at 5-9 day. It is proved that zeolite yields increased with increasing temperature, time, Si/Al ratio and organic template. Moreover, TEOS and Ludox LS as silica sources in the silicate-1 synthesis were found to influence the particle size. TEOS makes the zeolite particle smaller than Ludox LS. Two stage synthesis conducted on silicate-1 crystallization could decrease time and increase yield. However it is found that the average particle size was slightly higher than that in one-stage synthesis.
A Potential Framework For an Impactful Technopreneurship Education Ratna Mulyany; Syaifullah Muhammad; Teuku Aulia Geumpana; Hendra Halim; Muslim; Miksalmina; Cindy Dwi Pertiwi
Indonesian Journal of Business and Entrepreneurship Vol. 9 No. 2 (2023): IJBE, Vol. 9 No. 2, May 2023
Publisher : School of Business, IPB University (SB-IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17358/ijbe.9.2.208

Abstract

This study aims to conceptually discuss the potential framework for an impactful technopreneurship education in response to the dynamic business environment. An integrative review based on the selected pertinent literature was utilized to undertake this study. Unlike a systematic review, the integrative review does not aim to cover all articles published on the topic but combines perspectives and insights from different fields or research traditions. Several steps were involved in conducting an integrative review comprising of defining the research questions, conducting a comprehensive search, screening and selecting studies, extracting data and analyzing findings, drawing conclusions and making recommendation. The changes in curriculum and learning processes as well as academic transformation by embedding technological innovation and capacity building are the main priorities in preparing technopreneurs. To prepare reliable technopreneurs, while it is important to focus on technological innovation and capacity building, yet to integrate these two aspects, collaboration is the key word hence the collaboration among universities, the business world, government, media, and the community becomes one of the interesting routes that need to be developed. The pentahelix collaboration plays a major role in the cycle of the technopreneurship from the idea formulation, research, precommercialization, commercialization and embarking the advanced market. Keywords: entrepreneurship, technopreneurship, technological innovation, capacity building, pentahelix collaboration
Co-Authors . Faisal A. Layusa Nurmaida Cindy Dwi Pertiwi Fachry Abda El Rahman Farid Mulana HENDRA HALIM Izarul Machdar Kazuaki Syutsubo Miksalmina Moses O. Tadé Muslim Ratna Mulyany Shaobin Wang Takashi Onodera Teuku Aulia Geumpana Whinda A. Sukma