Life-cycle cost analysis of adsorption cycles for desalination

Kyaw Thu, A. Chakraborty, B. B. Saha, Won Gee Chun, K. C. Ng

Research output: Contribution to journalArticlepeer-review

52 Scopus citations

Abstract

This paper presents the thermo-economic analysis of the adsorption desalination (AD) cycle that is driven by low-temperature waste heat from exhaust of industrial processes or renewable sources. The AD cycle uses an adsorbent such as the silica gel to desalt the sea or brackish water. Based on an experimental prototype AD plant, the life-cycle cost analysis of AD plants of assorted water production capacities has been simulated and these predictions are translated into unit cost of water production. Our results show that the specific energy consumption of the AD cycle is 1.38 kWh/m3 which is the lowest ever reported. For a plant capacity of 1000 m3/d, the AD cycle offers a unit cost of $0.457/m3 as compared to more than $0.9 for the average RO plants. Besides being cost-effective, the AD cycle is also environment-friendly as it emits less CO2 emission per m3 generated, typically 85% less, by comparison to an RO process.

Original languageEnglish (US)
Pages (from-to)1-10
Number of pages10
JournalDesalination and Water Treatment
Volume20
Issue number1-3
DOIs
StatePublished - Aug 2010
Externally publishedYes

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledged KAUST grant number(s): R33-2009-000-1966-0
Acknowledgements: This work has been supported by grants (No. R33-2009-000-1966-0) from the World Class University (WCU) Project of the National Research Foundation, Korea (R265-000-286-597) from King Abdullah University of Science and Technology (KAUST), Saudi Arabia, and (R265-000-2-87-305) from ASTAR, Singapore.
This publication acknowledges KAUST support, but has no KAUST affiliated authors.

Keywords

  • Adsorption
  • Desalination
  • Economic analysis

ASJC Scopus subject areas

  • Water Science and Technology
  • Pollution
  • Ocean Engineering

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