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Articles 45 Documents
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Search results for , issue "1st International Conference Eco-Innovation in Science, Engineering, and Technology" : 45 Documents clear
Biosorption of Total Chrome Metals on Leather Tannery Liquid Waste Using Tofu Dregs Pangestu, Muhammad Aji; Pracesa, Yahya Ardian Yuma; Perwitasari, Dyah Suci
Nusantara Science and Technology Proceedings 1st International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2020.0531

Abstract

Chrome metal was the main element in tannery liquid waste. Chrome was included in B3 waste and has the potential to destructed or contaminated surroundings. The use of natural material as an adsorbent medium for b3 heavy metal currently was being studied. Tofu dregs were an alternative that can be used as biosorbent. This study's aim was to adsorbed total chrome metal in tannery liquid waste. The operating conditions took place at a pH of 7 and a stirring speed of 200 rpm. The analysis using Atomic Absorption Spectrometer (AAS) showed that the total chromium adsorption efficiency occurs in the addition of 6 grams of biosorbent with a contact time of 160 minutes. The adsorption percentage was 98% and the residual level total chromium metal in the tannery liquid waste was 0,33 mg/L after adsorption. These results have fulfilled the quality standard of the leather tannery wastewater that was allowed to be released into the environment with maximum total chrome metal levels of 0,5 mg/L. The total chromium metal biosorption in this study followed the Langmuir isotherm and took place as chemisorption.
Reduction of Chrom Ion (Cr) With Ion Exchange Resin in Liquid Waste of Leather Tanning Saputri, Resy Mareta Dwi; Aurellia, Pingky Marcella; Perwitasari, Dyah Suci
Nusantara Science and Technology Proceedings 1st International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2020.0532

Abstract

The leather tanning industry was classified as industrial in large quantities and dangerous. One of the wastes that produced was waste liquid containing chromium ions. The liquid waste that was released was very cloudy, colored, and has rotten management that caused serious problems to water bodies, communities and the environment. The waste without special handling was discharged into the environment. So that with the ion exchange method, it could reduce environmental pollution caused by industrial leather tanning waste. This study aimed to determine the effect of resin in reducing the chromium ion content in the liquid waste of the leather tanning industry using the ion exchange method. Namely, by consolidating waste and resin with various predetermined variables. The positively charged chromium ion will exchange with the H+ ion found in dowex resin. So that the chromium levels in the tannery liquid waste could be reduced. The results were obtained by the contact time and weight of the resin used. The highest reduction in chromium ion content was at contact time for 80 minutes with a resin weight of 150 grams of 98.75%.
Design of Ergonomic Tables and Chair for Special Needs Students (Case Study: Elia Junior High School Surabaya) Aryanny, Enny; Santoso, Budi; Alrianto, Wahyu Putra
Nusantara Science and Technology Proceedings 1st International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2020.0533

Abstract

Elia Junior High School is one of the private middle schools in Surabaya. The school has special needs students. Elia Junior High School uses normal sized school chairs and tables for students in general, when using it they often complaints of pain in the neck, and shoulders to the size of the table is too high and the table is not flexible, pain in the spine caused the back of the chair too upright, also the table does not have a drawer and a place to put a drink and hang shoes. The purpose of this study to design school tables and chairs for special needs students with ergonomic at Elia Junior High School Surabaya with the Anthropometry approach to reduce the grievances felt by these junior high school students. Finally, on the results of the study, the size of ergonomic school tables and chair of the seat high is 40.31 cm, the seat length is 45 cm, the seat width is 35 cm, the high back of the chair is 50 cm, the seatback width is 45.44 cm, the high t of the bottom table is 54 cm, the high of the top table is 70 cm, the length, and width of the table is 54.24 cm and the high of the drawer is 10 cm. These school tables and chairs are flexible because height and inclination can be adjusted to the dimensions of the student's body and have a drawer for storing drinks, and a place to hang shoes.
Utilizing Organic Waste (Sugarcane Bagasse and Sugarcane Leaves) as Bio Briquettes through Pyrolysis Process Saputro, Erwan Adi; Billah, Mu’tasim; Laksminingsih, Arieanthi; Mardiansyah, Yuda Eka; Yogaswara, Rachmad Ramadhan; Erliyanti, Nove Kartika
Nusantara Science and Technology Proceedings 1st International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2020.0534

Abstract

The energy crisis is approaching, not only Indonesia but also all around the world. This requires technological innovation to overcome it, such as; making alternative fuels that are cheap and easy to produce. One alternative way to overcome this problem is to make alternative fuels in the form of bio briquettes by utilizing organic waste (sugarcane bagasse and sugarcane leaves). This study aims to study the effect of the ratio of leaves and bagasse as main sources and using lignin as the adhesive, to produce bio briquettes. The ratio of leaves and bagasse used in this research were (30: 70). The pyrolysis process is carried out to obtain charcoal and sieved at 30 mesh. The charcoal is then mixed with the adhesive. The ratio of the amount of lignin with a mixture of sugarcane bagasse and leaves were (10: 90); (15: 85); (20: 80); (25: 75); (30: 70), and mold. The briquettes formed dried in an oven at 105 oC for 1 hour. The results of this study showed that the lowest calorific value was 4860 cal/kg at 10% lignin content and the highest calorific value at 25% was 5876 cal/kg. The results of the analysis of the lowest moisture content (%) were at 10% lignin content of 0.0781% and the highest moisture content was 0.1387% at 25% lignin content.
Line Balancing Techniques for Efficiency Improvement in Construction Steel Company Pulansari, Farida; Sulaiman, Yoga Aulia; Restu
Nusantara Science and Technology Proceedings 1st International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2020.0535

Abstract

XYZ company is a company engaged in steel construction. This company produces steel construction with several classifications, namely Building Construction (structure) and Mining Construction (Conveyor and Tank). This problem is found in the production process area where the efficiency of the company is not optimal because of the bottleneck between workstations. To increase efficiency and reduce bottlenecks, companies use the Largest Candidate Rule (LCR); Killbridge and the Western Method (KWM); and the Ranked Positional Weights (RPW) Method. After comparing the three methods, LCR has the best results. Production line efficiency is 92.2%, balance delay is 7.8%, and the smoothness index is 14.6 with 11 operators.
Redesigning Ergonomic Vertical Folding Desk in an Apartment Room using Anthropometric Approach Handoyo; Wiraputra, Anindyo Fikri
Nusantara Science and Technology Proceedings 1st International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2020.0536

Abstract

The use of a desk is generally big and can only be used for learning and does not have any additional functions; it causes the table to consume a lot of space in a room. The occupancy of the vertical occupancy is minimal, given the numerous availability. This design hopes to meet the needs of users who live in a place with narrow areas such as apartments, boards, houses, and other living rooms to do some activities related to the function of furniture that will be designed. With the increasing interest of people living in apartments, it is essential to consider furniture that will be used in a relatively narrow room. Thus, it is needed to overcome the conditions of the confined room. This research aims at redesigning an ergonomic and innovative folding desk in the apartment room, to provide comfort in its users. In improving the folding desk, it is hoped that this proposed folding desk will be more ergonomic and can be used daily. The results show that the recommended size for the ergonomic desk is 62 cm wide, 163 cm long, and 29 cm high; also, the recommended size of the seat is 50 cm high.
Hyperrreality in Avatar Film as a Form of Hegemony, Domination, and Capi-talist Ideology in Facing Society 5.0 Hayati, Kinanti Resmi; Afdholy, Nadia; Nashahta, Terra Bellatrix Aden
Nusantara Science and Technology Proceedings 1st International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2020.0537

Abstract

Indonesia is a country with third world values, which in the context of international structure is called periphery. The flow of information from the central countries (especially America) has been moving rapidly to Indonesia, not only in the form of economic activities but also in culture. The spread of culture is felt especially with films and television media. Today's globalization enables the mass media industry to create a mass culture and deliver messages to the masses. Capitalist ideology perpetuates the power of the masses by uniforming and homogeneity of events (identical). The film presents a variety of images that provide a stronger illusion related to understanding reality. Generally, film and society are understood as something linear, in the sense that film always influences society based on the content of its mandate without ever having the opposite. Avatar is a fictional film that takes us on a vacation to a planet that seems so real, where natural resources have been overused for decades. Through the film Avatar, the occurrence of hegemony, domination, and capitalist ideology can be seen from the image deliberately done by producers to accompany the masses on a mass culture product. The contents of the media present simulacra, pseudo needs, and create a pseudo world (hyperreality).
Making Virgin Coconut Oil (VCO) with Fermentation Process Using Fermipan and Addition of Pineapple Extract Nurma W, Kindriari; Wilya VP, Robet; Perdana, Dean
Nusantara Science and Technology Proceedings 1st International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2020.0538

Abstract

Virgin coconut oil (VCO) is a form of processed coconut meat that has recently been produced for commercial use. Virgin coconut oil or pure coconut oil is the result of processed coconut that is free of trans-fatty acid (TFA) or trans-fatty acids that are easily digested and oxidized by the body to prevent accumulation in the body. Trans fatty acids can occur due to the hydrogenation process, so as not to undergo the hydrogenation process, the extraction of coconut oil is carried out by the fermentation process. This research was conducted by the Fermentation method using Fermipan as a microbe and the addition of the bromelin enzyme from pineapple extracts. The variables in this study were 100 ml of coconut milk volume, pH 4, and fermipan weight 0.2 gr. The variables implemented were pineapple extract volume (20, 25, 30, 35, 40) ml, fermentation time (18, 24, 30, 36, 42) hours. Analysis of VCO results compared with VCO SNI, namely the content of water content, free fatty acid numbers, saponification numbers, and iodine numbers. Optimum VCO results were obtained at 30 hours fermentation time and 30 ml pineapple extract which produced 35 ml rendamen, water content 0.08, free fatty acid numbers 0.1, saponification number 72.9, and Iodine number 26.65.
The Influence Model of Reliability, Assurance, Tangibles, Empathy, Responsive-ness on Customer Satisfaction and Highway Users Loyalty Waluyo , Minto; Sumiati; Waluyo, Mohammad Rachman
Nusantara Science and Technology Proceedings 1st International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2020.0539

Abstract

To harmonize the government program of the National Non-Cash Movement (GNNT), PT. Jasa Marga does service improvement by implementing E-Toll. The implementation of the E-toll service is deemed not fully implemented according to the expected goals. This is evident from the existence of several problems that occur such as double detach, the E-toll card is not read by the reader contactless machine, and the gate is not open, all transaction services become dissatisfied. This study aims to determine the effect of reliability, assurance, tangibles, empathy, and responsiveness variables on customer satisfaction and loyalty of toll road users at PT. Jasa Marga Surabaya - Mojokerto Indonesia. Respondents in this study were toll road users who had crossed the Surabaya - Mojokerto toll road at least once, the number of respondents was 120. This study used the Structural Equation Modeling (SEM) method which was processed using AMOS 22 software. The results showed that the Reliability variable had a significant effect on customer satisfaction, Assurance does not have a significant effect on customer satisfaction, Tangible has no significant effect on customer satisfaction, Empathy has no significant effect on customer satisfaction, Responsiveness has a significant effect on customer satisfaction, customer satisfaction has a significant effect on customer loyalty and the model equation is as follows Y2 = 0.207 X1 + 0.114 X2 + 0.04 X3 + 0.161 X4 + 0.191 X5
Distribution Optimization Using Ant Colony Optimization (ACO) Method Case Research: PT. Coca Cola Official Distributor of Surabaya Area Rusindiyanto; Rahmawati, Nur; Sutejo , Muhammad Andriven Gozali
Nusantara Science and Technology Proceedings 1st International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2020.0540

Abstract

PT.Coca-Cola Amatil Indonesia is a manufacturing company that produces beverages such as soft drinks, tea, milk, juice, isotonic and mineral water, located in Pandaan. This company has a distribution area that is spread almost all over Indonesia. In the Surabaya area, the company has 30 kiosks/salesmen as partners. The distribution of products in the Surabaya area is done through Take Order (TO) sales. The final product is distributed to consumers through third parties. The purpose of this research is to determine the distribution route with the shortest distance. The distribution problem experienced by this company is better known as the Traveling salesman problem (TSP). TSP is a combinatorial problem where when the problems faced are increasingly complex, the time needed is also getting longer. Several methods for solving TSP have been proposed. One of the best is the metaheuristic method, one of which is Ant Colony Optimization (ACO). In this research, the ACO method is used to solve the TSP problems encountered. The routes generated from the ACO method are 41.3 km which is 9.03% shorter than the actual route.

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