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All Journal KURVATEK Prosiding Seminar Nasional Rekayasa Teknologi Industri dan Informasi ReTII
Nurkhamim
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Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Social Sciences Transportation

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Desain Saluran Terbuka Berbasis Microsoft Excel Perhitungan dan Pemodelan yang Praktis dan Effisien Faizal Agung Riyadi; Tedy Agung Cahyadi; Nurkhamim; Supandi
KURVATEK Vol 4 No 2 (2019): November 2019
Publisher : Institut Teknologi Nasional Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33579/krvtk.v4i2.1563

Abstract

A channel is constructed as a media for water to flow. Phases of plan, design, and construction of a channel require a lot of time, effort, and budget. Design and construction of a channel need to be suited to certain requirements and characteristics of the location. Changes of design parameters often occurred as a result of technical and economical considerations. It leads to changes of channel design to adapt to the new parameters. Hence, the needs of tool to ease the calculation of channel design. Required parameters for channel design calculations are flow (Q), Chezy’s resistance factor (C), Darcy-Weisbach’s coefficient (f), atau Manning’s roughness factor (n), and the channel base gradient (i). The objective of this research are channel design calculations and modelling, in addition profide a tool which is practical and easy to use. The methods are Chezy, Darchy-Weisbach, and Manning formula to calculate the design of varied channel type using Microsoft Excel software. Determinations of Chezy’s resistance factor (C), Darcy-Weisbach’s coefficient (f), can be related to Manning’s roughness factor (n) value. Manning’s roughness factor (n) can be estimated from the size of channel bed’s lining material particles (d) using certain formula or define the value dirrectly from Manning’s roughness factor table.The result of this research including a tool for open channel design calculation and modelling“Kalkulator Desain Saluran – FAR”. The writers propose a new formula to estimate Manning’s roughness factor (n) value from the size of channel bed’s lining material particles (d). In addition, the writers propose formulas to directly calculate water level on the channel geometry section (y). The formula include coefficient of α which is based on relations of channel geometry parameters in to the formula of Chezy, Darchy-Weisbach, and Manning. Keyword : channel, design, geometry, practical, tool
OVERVIEW PERBANDINGAN TEKNOLOGI ALTERNATIF AKTIF DAN PASIF DALAM PENGELOLAAN AIR ASAM TAMBANG Shahensah Anand Anggian Rambe; Nurkhamim
Retii 2020: Prosiding Seminar Nasional ReTII ke-15
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

ABSTRACT The formation of a metal-rich acid solution known as Acid Mine Drainage (AMD) is a common problem associated with mineral and coal mining in Indonesia. AMD is formed when sulfide minerals such as pyrite (Fe2S) are found to be mixed with coal or overburden in direct contact with oxygen and water during the operational and post-mine closure phases. Therefore, the management of acid mine drainage (AMD) needs to be done so that the water that comes out of the mining area that enters the water does not pollute the environment. Alternative AMD management is generally divided into two, namely active technology and passive technology. The author conducted a comparison of several literatures to analyze active and passive alternative methods, and determine the factors that influence pH changes during treatment. From these results it was found that the selection of the appropriate AMD management method depends on the level of efficiency in the processing of water chemical properties including pH, metal and sulfate concentrations in minimizing costs and risks to the environment. Keywords: Acid mine drainage, active alternative, passive alternative
Co-Authors Cahyadi, Tedy Agung Faizal Agung Riyadi Shahensah Anand Anggian Rambe