Article Per Year (5 Year)
p-Index From 2021 - 2026
0.444
P-Index
This Author published in this journals
All Journal Engineering Science Letter Aceh International Journal of Science and Technology
Harwin
Calvin Institute of Technology
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
Comparing Nanofiltration and Ion Exchange for Reverse Osmosis Pretreatment in Industrial Water Treatment: A Techno-Economic Analysis Harwin, Harwin
Aceh International Journal of Science and Technology Vol 13, No 1 (2024): April 2024
Publisher : Graduate School of Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/aijst.13.1.37113

Abstract

Water softening is a crucial process in various industrial applications, and the selection of an appropriate system involves balancing technical efficiency, environmental impact, and economic considerations. This paper presents a comprehensive analysis of two prominent industrial water softening systems, Nanofiltration (NF) and Ion Exchanger (IX), through a multidimensional lens. The systems design and sizing were simulated with computer assistance, using the DuPonts WAVE Water Treatment Design Software version 1.82. The technical evaluation, based on simulations, revealed that IX outperformed NF in total hardness removal ( 99%) at the expense of a slight increase in Total Dissolved Solids (TDS). In contrast, NF demonstrated a superior ability to reduce TDS, albeit with lesser total hardness removal. Environmental considerations highlighted trade-offs, with NF generating higher wastewater volumes and IX producing wastewater with highly concentrated TDS, necessitating complex treatment processes. Economically, NF generally incurred higher Total Annual Costs (TAC) at lower total hardness concentrations, while IX became costlier at higher concentrations. A selection chart is introduced to aid decision-making based on economic considerations. This research offers valuable insights for industries seeking an optimal water softening solution, balancing technical efficiency, environmental impact, and economic considerations. The findings provide a nuanced understanding to guide system selection based on specific water quality requirements and economic constraints.
Techno-Economic Analysis of Small-Scale Reverse Osmosis Desalination for Likupang Tourism Area Maria Anindita Nauli; Harwin; Kezia Rambu Durry
Engineering Science Letter Vol. 5 No. 01 (2026): Engineering Science Letter
Publisher : The Indonesian Institute of Science and Technology Research

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56741/IISTR.esl.001698

Abstract

Likupang, a Super Priority Tourism Destination in Indonesia, faces significant challenges in securing a reliable and affordable fresh water supply, currently depending on expensive trucked-in water. This study evaluates the techno-economic feasibility of a small-scale Reverse Osmosis (RO) desalination system to address this issue. Using DuPont’s WAVE Water Treatment Design software, three distinct operational scenarios (A = 50, B = 80, and C = 90 m³/day capacities) were designed and simulated to accommodate the fluctuating water demand characteristic of a tourism area. The technical analysis identified the 80 m³/day demand-responsive scenario as the most energy-efficient, with a Specific Energy Consumption (SEC) of 3.73 kWh/m³. Meanwhile, the economic evaluation, based on the Levelized Cost of Water (LCOW), determined that the most cost-effective strategy is Scenario A with an LCOW of 60,766 IDR/m³. This cost is significantly lower than the current market price of trucked-in water, demonstrating that small-scale RO desalination is a viable and economically competitive solution to support sustainable tourism development in Likupang.
Co-Authors Kezia Rambu Durry Maria Anindita Nauli