Renewable energy powered membrane technology

Experimental investigation of system performance with variable module size and fluctuating energy

Junjie Shen, Azam Jeihanipour, Bryce S. Richards, Andrea I. Schäfer

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Integration of renewable energy and membrane filtration technologies such as nanofiltration (NF) and reverse osmosis (RO) can provide drinking water in places where freshwater is scarce and grid electrical connections are unavailable. This study investigated a directly-connected photovoltaic-powered membrane system under fluctuating solar conditions. Specifically, two configurations of NF/RO membranes with the same membrane area were investigated: a) 1 × 4″ module, which contained one 4″ NF/RO element; and b) 3 × 2.5″ module, which contained three 2.5″ NF/RO elements in series. A high fluoride brackish water ([F ] = 56.2 mg/L, total dissolved solids [TDS] = 4076 mg/L) collected from northern Tanzania was treated by different membranes in the two configurations. Performance indicators such as flux, specific energy consumption, and permeate F concentration were monitored over a 60-min period of energy fluctuation that are part of a typical solar day. The results showed that the overall performance of the 1 × 4″ module was superior to that of the 3 × 2.5″ module. This is because the performance of a 3 × 2.5″ module degraded significantly from the first element to the third element due to the increased feed concentration and the decreased net driving pressure. Three 1 × 4″ modules (BW30, BW30LE and NF90) and one 3 × 2.5″ module (BW30) were able to meet the drinking water guideline for fluoride. During cloud periods, the transient permeate F concentration exceeded the guideline value due to insufficient power, however the cumulative permeate F concentration was always well below the guideline. The photovoltaic-powered membrane system equipped with the above modules provides a promising solution for addressing drinking water problems in remote and rural areas.

Original languageEnglish
Pages (from-to)64-73
Number of pages10
JournalSeparation and Purification Technology
Volume221
Early online date5 Mar 2019
DOIs
Publication statusPublished - 15 Aug 2019

Keywords

  • Brackish water
  • Desalination
  • Energy fluctuation
  • Fluoride
  • Module size
  • Nanofiltration
  • Reverse osmosis

ASJC Scopus subject areas

  • Analytical Chemistry
  • Filtration and Separation

Cite this

Renewable energy powered membrane technology : Experimental investigation of system performance with variable module size and fluctuating energy. / Shen, Junjie; Jeihanipour, Azam; Richards, Bryce S.; Schäfer, Andrea I.

In: Separation and Purification Technology, Vol. 221, 15.08.2019, p. 64-73.

Research output: Contribution to journalArticle

@article{14c25f78884b419788a98d70cb5d34ee,
title = "Renewable energy powered membrane technology: Experimental investigation of system performance with variable module size and fluctuating energy",
abstract = "Integration of renewable energy and membrane filtration technologies such as nanofiltration (NF) and reverse osmosis (RO) can provide drinking water in places where freshwater is scarce and grid electrical connections are unavailable. This study investigated a directly-connected photovoltaic-powered membrane system under fluctuating solar conditions. Specifically, two configurations of NF/RO membranes with the same membrane area were investigated: a) 1 × 4″ module, which contained one 4″ NF/RO element; and b) 3 × 2.5″ module, which contained three 2.5″ NF/RO elements in series. A high fluoride brackish water ([F − ] = 56.2 mg/L, total dissolved solids [TDS] = 4076 mg/L) collected from northern Tanzania was treated by different membranes in the two configurations. Performance indicators such as flux, specific energy consumption, and permeate F − concentration were monitored over a 60-min period of energy fluctuation that are part of a typical solar day. The results showed that the overall performance of the 1 × 4″ module was superior to that of the 3 × 2.5″ module. This is because the performance of a 3 × 2.5″ module degraded significantly from the first element to the third element due to the increased feed concentration and the decreased net driving pressure. Three 1 × 4″ modules (BW30, BW30LE and NF90) and one 3 × 2.5″ module (BW30) were able to meet the drinking water guideline for fluoride. During cloud periods, the transient permeate F − concentration exceeded the guideline value due to insufficient power, however the cumulative permeate F − concentration was always well below the guideline. The photovoltaic-powered membrane system equipped with the above modules provides a promising solution for addressing drinking water problems in remote and rural areas.",
keywords = "Brackish water, Desalination, Energy fluctuation, Fluoride, Module size, Nanofiltration, Reverse osmosis",
author = "Junjie Shen and Azam Jeihanipour and Richards, {Bryce S.} and Sch{\"a}fer, {Andrea I.}",
year = "2019",
month = "8",
day = "15",
doi = "10.1016/j.seppur.2019.03.004",
language = "English",
volume = "221",
pages = "64--73",
journal = "Separation and Purification Technology",
issn = "1383-5866",
publisher = "Elsevier",

}

TY - JOUR

T1 - Renewable energy powered membrane technology

T2 - Experimental investigation of system performance with variable module size and fluctuating energy

AU - Shen, Junjie

AU - Jeihanipour, Azam

AU - Richards, Bryce S.

AU - Schäfer, Andrea I.

PY - 2019/8/15

Y1 - 2019/8/15

N2 - Integration of renewable energy and membrane filtration technologies such as nanofiltration (NF) and reverse osmosis (RO) can provide drinking water in places where freshwater is scarce and grid electrical connections are unavailable. This study investigated a directly-connected photovoltaic-powered membrane system under fluctuating solar conditions. Specifically, two configurations of NF/RO membranes with the same membrane area were investigated: a) 1 × 4″ module, which contained one 4″ NF/RO element; and b) 3 × 2.5″ module, which contained three 2.5″ NF/RO elements in series. A high fluoride brackish water ([F − ] = 56.2 mg/L, total dissolved solids [TDS] = 4076 mg/L) collected from northern Tanzania was treated by different membranes in the two configurations. Performance indicators such as flux, specific energy consumption, and permeate F − concentration were monitored over a 60-min period of energy fluctuation that are part of a typical solar day. The results showed that the overall performance of the 1 × 4″ module was superior to that of the 3 × 2.5″ module. This is because the performance of a 3 × 2.5″ module degraded significantly from the first element to the third element due to the increased feed concentration and the decreased net driving pressure. Three 1 × 4″ modules (BW30, BW30LE and NF90) and one 3 × 2.5″ module (BW30) were able to meet the drinking water guideline for fluoride. During cloud periods, the transient permeate F − concentration exceeded the guideline value due to insufficient power, however the cumulative permeate F − concentration was always well below the guideline. The photovoltaic-powered membrane system equipped with the above modules provides a promising solution for addressing drinking water problems in remote and rural areas.

AB - Integration of renewable energy and membrane filtration technologies such as nanofiltration (NF) and reverse osmosis (RO) can provide drinking water in places where freshwater is scarce and grid electrical connections are unavailable. This study investigated a directly-connected photovoltaic-powered membrane system under fluctuating solar conditions. Specifically, two configurations of NF/RO membranes with the same membrane area were investigated: a) 1 × 4″ module, which contained one 4″ NF/RO element; and b) 3 × 2.5″ module, which contained three 2.5″ NF/RO elements in series. A high fluoride brackish water ([F − ] = 56.2 mg/L, total dissolved solids [TDS] = 4076 mg/L) collected from northern Tanzania was treated by different membranes in the two configurations. Performance indicators such as flux, specific energy consumption, and permeate F − concentration were monitored over a 60-min period of energy fluctuation that are part of a typical solar day. The results showed that the overall performance of the 1 × 4″ module was superior to that of the 3 × 2.5″ module. This is because the performance of a 3 × 2.5″ module degraded significantly from the first element to the third element due to the increased feed concentration and the decreased net driving pressure. Three 1 × 4″ modules (BW30, BW30LE and NF90) and one 3 × 2.5″ module (BW30) were able to meet the drinking water guideline for fluoride. During cloud periods, the transient permeate F − concentration exceeded the guideline value due to insufficient power, however the cumulative permeate F − concentration was always well below the guideline. The photovoltaic-powered membrane system equipped with the above modules provides a promising solution for addressing drinking water problems in remote and rural areas.

KW - Brackish water

KW - Desalination

KW - Energy fluctuation

KW - Fluoride

KW - Module size

KW - Nanofiltration

KW - Reverse osmosis

UR - http://www.scopus.com/inward/record.url?scp=85063239049&partnerID=8YFLogxK

U2 - 10.1016/j.seppur.2019.03.004

DO - 10.1016/j.seppur.2019.03.004

M3 - Article

VL - 221

SP - 64

EP - 73

JO - Separation and Purification Technology

JF - Separation and Purification Technology

SN - 1383-5866

ER -