scholarly journals REVIEW: TEKNOLOGI PEMBUATAN SORBITOL DARI TEPUNG TAPIOKA

2021 ◽  
Vol 2 (2) ◽  
pp. 8-14
Author(s):  
Ifwarisan Defri ◽  
Aditya Irfansyah ◽  
Sukma Sudarsono ◽  
ERWAN SAPUTRO
Keyword(s):  
Catalytic Hydrogenation ◽  
Reduction Process ◽  
Hydrogen Gas ◽  
Hydrogenation Process ◽  
Literature Study ◽  
Manufacturing Plants ◽  
Advantages And Disadvantages ◽  
Product And Process ◽  
Tapioca Flour ◽  
Catalytic Hydrogenation Process

Sugar alcohol or sorbitol is a derivative product of carbohydrates, namely glucose through the hydrogenation process with hydrogen gas. The glucose used comes from flour, because the carbohydrate content in tapioca flour is considered the highest compared to other flour ingredients. Before the hydrogenation process is carried out, tapioca flour is enzymatically hydrolyzed so that the starch is broken down into glucose. The process of making sorbitol can be done in two ways, namely the electrolysis reduction process and the hydrogenation process with the help of a nickel catalyst. This literature study aims to determine the technology for making sorbitol and its advantages and disadvantages, both in terms of product and process, so that it can be used as a reference in selecting processes in sorbitol manufacturing plants. The catalytic hydrogenation process has advantages, namely the resulting yield is greater and the operating costs are relatively cheaper. The catalytic hydrogenation process also has several disadvantages, namely that it requires good safety handling because it requires high pressure in the process.

Continuous Catalytic Hydrogenation of Carbon Dioxides on Immobilized Ru Functionalistic Catalysts

2013 ◽  
Vol 781-784 ◽  
pp. 227-234
Author(s):  
Li Ping Ma ◽  
Wen Juan Xu
Keyword(s):  
Reaction Mechanism ◽  
Formic Acid ◽  
Catalytic Hydrogenation ◽  
Fixed Bed ◽  
Catalyst Preparation ◽  
Reaction Process ◽  
Hydrogenation Process ◽  
Main Production ◽  
Water Gas ◽  
Catalytic Hydrogenation Process

Functionalized catalyst preparation is a new and attractive method for hydrogenation of carbon dioxides. Three kind of carriers were functionalized firstly and then Ru was immobilized on the carriers. Continuous catalytic hydrogenation process was used to evaluate the activity of the catalyst on fixed-bed. It was found that the main production are formic acid and CO at 10MPa, and both the selectivity and recovery of CO are more than 90%, the hydrogen reaction mechanism could be explained with the reversed water gas reaction process. This may offer a new way for the reuse of CO2.

Novel continuous catalytic hydrogenation process for the synthesis of diacetone-d-allose

2017 ◽  
Vol 113 ◽  
pp. 2-13 ◽  
Author(s):  
Anne Müller ◽  
Jana Kanz ◽  
Stefan Haase ◽  
Karin Becker ◽  
Hans-Matthias Vorbrodt
Keyword(s):  
Catalytic Hydrogenation ◽  
Hydrogenation Process ◽  
Catalytic Hydrogenation Process

P‐12: Activation of IGZO Devices at 150°C via Reduction Process Using Hydrogen Gas During Sputtering

2021 ◽  
Vol 52 (1) ◽  
pp. 1096-1099
Author(s):  
Yusaku Magari ◽  
S G Mehadi Aman ◽  
Daichi Sasaki ◽  
Mamoru Furuta
Keyword(s):  
Reduction Process ◽  
Hydrogen Gas

Pelestarian Terbitan Berkala Koleksi Perpustakaan Nasional Republik Indonesia dengan Metode Penjilidan “Malaysia”

2021 ◽  
Vol 28 (1) ◽  
pp. 15-25
Author(s):  
Damaji Ratmono
Keyword(s):  
Field Research ◽  
Future Generations ◽  
Literature Study ◽  
National Library ◽  
Advantages And Disadvantages ◽  
Descriptive Research ◽  
History Of ◽  
Research Interviews ◽  
To Come ◽  
Insight Into

Preservation of library materials or library collections is an effort made so that library materials can be used by future generations. This paper describes the "Malaysian" binding method used by the Sub Division of Technical Binding Materials of the National Library of Indonesia in preserving the collection of periodicals such as tabloids and newspapers. Apart from that, this paper also describes some of the advantages and disadvantages seen in the use of the "Malaysian" method as well as the early history of using this method in preserving the collection of periodicals in the National Library of Indonesia. This writing aims to make readers, especially library managers, know and gain insight into the "Malaysian" binding method. This writing method is through descriptive research with a qualitative approach. Methods of data collection are carried out through the field research, interviews, and literature study. The results show that the National Library of Indonesia uses this method after studying it from Malaysia in May 1990. From observations it is also known that this method has several advantages, namely the binding result is stronger, the collection is more preserved, the binding can be assembled and has an aesthetic side. Meanwhile, the disadvantages of this binding method are that the process tends to be longer, more expensive, cannot be put on too many shelves because the collection will shift backwards, the pages tend to come off easily if the stitches are not strong enough, and can only be used in binding periodical collections.

scholarly journals Social Inequality among the Female Merchants of Ethnic Malay and Chinese

Society ◽  
2020 ◽  
Vol 8 (1) ◽  
pp. 1-12
Author(s):  
Eraskaita Ginting ◽  
Yusnaini Yusnaini
Keyword(s):  
Hong Kong ◽  
Social Inequality ◽  
Social Inequalities ◽  
Literature Study ◽  
Chinese Market ◽  
Study Approach ◽  
Advantages And Disadvantages ◽  
The City ◽  
Depth Interviews

People in Jambi city assume that Pasar Hong Kong, a traditional market located in Jelutung sub-district, is “a Chinese market”, even some areas in the city of Jambi such as Jelutung, Koni, and Talang Banjar are dominated by the ethnic of Chinese. This research aims to explore how social inequality that occurs due to the advantages and disadvantages of an ethnic group so that it can affect individual attitudes that damage social capital. This research uses a case study approach with in-depth interviews and literature study as data collection techniques. The subjects of this study were ethnic Malay and Chinese female merchants in Pasar Hong Kong, Jambi city, Indonesia. This research found that social inequalities that occur among the female merchants of ethnic Malay and Chinese in Pasar Hongkong occur naturally, where both merchants and buyers have a high tolerance when interacting. Although sometimes there are differences in attitude when the merchants serve different ethnic buyers. The involvement of traditional leaders in managing social inequalities is very important due to the lack of assimilation among ethnic Malay and Chinese.

scholarly journals Differences in Mathematic Connection Abilities and Self-Efficacy between Students Given Approaches Realistic Mathematics with the Approach Inquiry at Senior High School 2 Tanjung Morawa

2020 ◽  
Vol 3 (3) ◽  
pp. 1489-1500
Author(s):  
Khairina Hazrati ◽  
Ani Minarni ◽  
W. Rajagukguk
Keyword(s):  
High School ◽  
Self Efficacy ◽  
Study Data ◽  
Senior High School ◽  
Literature Study ◽  
Advantages And Disadvantages ◽  
Realistic Mathematics ◽  
Inquiry Approach ◽  
The Difference ◽  
Math Problems

This study aims to determine how the difference between mathematical connections and self-efficacy between students who are given a realistic mathematics approach with an inquiry approach at Senior High School  2 Tanjung Morawa. The sample used in this study was Senior High School  2 Tanjung Morawa. With the method of collecting literature study data. The method used is literature study. The results of this study indicate that the overall approach to mathematics is realistic and inquiry, each of which has advantages and disadvantages, but in this study a good approach to use in students' ability to solve math problems is the inquiry approach, because with the inquiry approach students can be more active, and have ideas in solving math problems.

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