メインコンテンツに移動
  • 認定パートナー
  • ELGAについて
    • ELGAについて
    • 採用情報
    • イベント
  • サポート
    • ラボのプランニング
    • 製品を登録
    • Register Your Product (USA & Canada Only)
  • お問い合わせ
  • U.S.A.
  • U.K.
  • Deutschland
  • España
  • France
  • Italia
  • Brasil
  • 中国
ホーム ELGA LabWater
  • 製品
    • PURELAB
    • CENTRA
    • MEDICA
    • BIOPURE
    • ELGA全製品ライン
  • 用途
    • ガスクロマトグラフィー
    • ラボ用水の一般要件
    • 免疫組織染色
    • 分光測光法
    • 原子分光学
    • 微生物学的分析
    • 液体クロマトグラフィー
    • 細胞培養
    • 臨床生化学
    • 質量分析
    • 遺伝学
    • 電気化学
  • 純水製造技術
    • PureSure
    • ろ過
    • イオン交換
    • 活性炭
    • 紫外線
    • 逆浸透(RO)
    • 電気脱イオン処理(EDI)
  • 水中の不純物
    • 微生物&細菌
    • 有機化合物
    • 溶存ガス
    • 無機化合物
    • 粒子状物質
  • Knowledge
    • ブログ
    • ケーススタディ
    • 超純水
    • ガイド&ホワイトペーパー
  • 製品
    • PURELAB
    • CENTRA
    • MEDICA
      • Hubgrade
      • MEDICA BIOX
    • BIOPURE
    • ELGA全製品ライン
      • PURELAB® Classic
  • 用途
    • ガスクロマトグラフィー
    • ラボ用水の一般要件
    • 免疫組織染色
    • 分光測光法
    • 原子分光学
    • 微生物学的分析
    • 液体クロマトグラフィー
      • Hochleistungsflüssigkeitschromatographie (HPLC)
    • 細胞培養
    • 臨床生化学
    • 質量分析
    • 遺伝学
    • 電気化学
  • 純水製造技術
    • PureSure
    • ろ過
    • イオン交換
    • 活性炭
    • 紫外線
    • 逆浸透(RO)
    • 電気脱イオン処理(EDI)
  • 水中の不純物
    • 微生物&細菌
    • 有機化合物
    • 溶存ガス
    • 無機化合物
    • 粒子状物質
  • Knowledge
    • ブログ
      • Analytical Chemistry
      • Clinical & Pharma
      • Cool Science
      • Environment and sustainability
      • Life in the lab
      • Purelab product design
      • Science of the future
      • Water Purity
      • Water in the lab
    • ケーススタディ
      • 南アジアのAbbott Diagnostics、ELGA MEDICAシステムを選択
      • Beam Me Up, Scotty: PURELAB® Option Q Delivers Essential Ultra Pure Water
      • Argenta chooses DKSH New Zealand to deliver Ultrapure water in Animal Pharma
      • Clean Water for a Clean Future
      • LS Scientific & ELGA deliver UltraPure water to the NAFDAC Laboratory
      • Lifebrain Group chooses ELGA as water partner for new modern 24/7 PCR-COVID-19 laboratory in Vienna, Austria.
      • Critital Tests Benefit from PURELAB® Option Reliable Pure Water
      • DASA:ブラジル最大の医療診断企業
      • 免疫血清学ラボの稼働時間最大化を支援するELGA
      • Fondazione Telethon Continues to Choose ELGA Labwater as a Trusted Partner
      • ジェネリック医薬品開発における超純水(I型水+)の重要性
      • Siemens ADVIA分析装置用に市立総合病院がMEDICA®Proを導入
      • Optimale Wasserqualität für mikrobiologische Forschung und Lehre
      • PURELAB® Option R Guarantees Pure Water for Leading Microfluidics Technology
      • PURELAB® Pulse Delivers Reliable Water Quality and Quantity for a Wide Range of Applications
      • PURELAB® flex:現代的な研究手法における理想的なトレーニングシステム
      • Powering Cutting-Edge Gene Research
      • Sichere Reinstwasserversorgung für präzise Produkttests
      • Zentrale Reinstwasser-Aufbereitung für Analyser
      • ELGA LabWater and Beckman Coulter Join Forces
      • Applied New Technologies Department Improves ICP, IC & HPLC Sample Turnaround Times with PURELAB®
      • 超純水により南極の謎を解明
      • Advancing Genetic Technologies
      • Cross Infection Control: Pure and Simple
      • Researching effective new ways to prevent cardiovascular disease at the University of Columbia
    • 超純水
    • ガイド&ホワイトペーパー
      • HPLC用水の純度
      • 製薬におけるHPLC
      • 臨床でのリスクの低減
      • サステナビリティ
  • U.S.A.
  • U.K.
  • Deutschland
  • España
  • France
  • Italia
  • Brasil
  • 中国
  • プライバシーポリシー
  • 利用規約
  • 世界的な法令順守
  • 特許
  • サイト管理者情報
  • ホーム
  • A new photothermal device for seawater desalination
Water Purity

A new photothermal device for seawater desalination

18 7月 2022
- by ELGA Editorial Team

A new photothermal device for seawater desalinationThe number of countries suffering from shortages of fresh drinking water has risen significantly in recent years due to rapid population growth, climate change and the intensification of industries such as agriculture. Since seawater represents about 96.7 % of the total available water on the earth, desalination by seawater reverse osmosis (SWRO) is currently the most economical way to produce potable water. However, SWRO only demonstrates around 50% efficiency, due to technical limitations related to high osmotic pressures and the concentration polarisation phenomenon. This led a team of scientists from the United Arab Emirates (UAE) and Italy to evaluate a plasmonic photothermal membrane distillation tool that could drastically increase the efficacy of seawater desalination.

Membrane distillation (MD) has emerged as a potential alternative or complementary technique to SWRO in recent years. However, conventional MD systems are negatively affected by temperature polarisation, which drastically reduces their performance.

One option for increasing desalination capacity could be photothermal membrane distillation (PMD), a hybrid thermal membrane technology based on the use of microporous hydrophobic membranes. The plasmonic photothermal MD device comprises advanced nanostructured membranes with metallic nanoparticles (NPs) in polymeric matrixes. This novel method is unlimited by osmotic phenomena, and so it can produce desalted water with a high thermal efficiency of over 85 % and a comparatively low energy input. Researchers from the Masdar Institute of Science and Technology in the UAE, and the National Research Council of Italy (ITM-CNR) and the Italian universities of Calabria and Sassari, have studied the effects of NP content on the membrane surface temperature resulting from the polarisation phenomenon, to determine the influence of photothermal plasmonic excitation on MD function.1 

 

Sample preparation and analysis

Deionised water produced by a PURELAB® water purification system from ELGA LabWater was used throughout the investigation. Silver (Ag) NPs were synthesised by chemical reduction with sodium citrate as a metal precursor, and flat-sheet microporous membranes containing Ag NPs were prepared by the nonsolvent-induced phase inversion process. Scanning electron microscopy

and transmission electron microscopy were carried out to establish the influence of the Ag NPs on the surface and cross-sectional morphology of the membranes. To explore the photothermal effects on the membrane, a high-pressure UV mercury lamp was used to irradiate a dedicated dead-end vacuum MD cell while a feed solution was pumped over the membrane. The membrane surface temperature was monitored with a probe during the experiment. A comparative energy analysis between the vacuum MD prototype and a standard reverse osmosis set-up was also performed.

 

Results

The photothermal heat flux was 1.7 times greater for tests with pure water than the latent heat flux associated with the water evaporation through the membrane, and was approximately doubled for a saline solution. The thermal radiation energy of the UV lamp raised the surface temperature by about 2.5 K in membranes without Ag NPs, compared to an increase of 4 K in those containing these metallic nanoparticles.

This study demonstrated that thermoplasmonic effects were promoted by photothermal excitations of Ag NPs incorporated into microporous membranes. This raised the feed temperature at the membrane surface exposed to UV irradiation, and so reversed temperature polarisation, achieving a previously unrecorded MD efficiency. 

 

Future applications

Despite the promising early results, the major challenge facing this new MD equipment, is the scale-up from a micrometre to an industrial scale. Energy consumption is a key factor to consider in scaling up, and the comparative energy analysis shows that this novel thermoplasmonic technique has the potential to reduce energy demands by 25%, significantly boosting the performance of the pre-existing MD system. The ability of PMD to effectively operate at high salt concentration, regardless of osmotic counter pressures, could play a vital role in enhancing water quality and desalting capacity, ultimately improving the sustainability and productivity of the seawater desalination process.

 

Why Choose ELGA LabWater?

The presence of impurities in laboratory water can be a major problem in research experiments, and can seriously compromise results. ELGA LabWater has been a trusted supplier or pure and ultrapure water since 1937. We believe in giving you choice in how you use our water purification solutions, supported by excellent service and support. For more information on our Type I ultra pure water systems, check out our PURELAB Quest, PURELAB Chorus 1 Complete and our PURELAB flex models.

 

References

1 Politano, A et al. 2017. Photothermal Membrane Distillation for Seawater Desalination. Advanced Materials 29:10.1002/adma.201603504.

Quest Download

PURELAB Quest

The only purifier on the market that dispenses all 3 types of science ready water from a compact, economical and easy to use system!

             Click Here To Find Out More

 

  • Enquiry
  • 見積もりを取得
  • デモを予約する
  • 承認されたパートナーを見つける

Enquiry

Please check this to confirm that you have read our Terms of Service and Privacy Policy.

見積もりを取得

Please check this to confirm that you have read our Terms of Service and Privacy Policy.

デモを予約する

Please check this to confirm that you have read our Terms of Service and Privacy Policy.

Call us

Can't find what you are looking for?

Support Number
+44 (0)20 3567 7300
United Kingdom Sales
+44 (0)1628 879 704
United States of America Sales
+1 877-315-3542
France Sales
+33 1 40 83 65 00
China Sales
+86 400-616-8882

 

ELGA LabWater US Headquarters

Lane End Business Park
Lane End, High Wycombe
HP14 3BY
United Kingdom
電話: +44 (0) 203 567 7300
ファックス:+44 (0) 203 567 7205

ELGA LabWater本社

Lane End Business Park
Lane End, High Wycombe
HP14 3BY
United Kingdom
電話: +44 (0) 203 567 7300
ファックス:+44 (0) 203 567 7205

ケーススタディ

  • Abbott Diagnostics(アボットダイアグノスティクス)
  • DASA Medical Diagnostics(DASA医療診断)
  • NeoDIN Medical Institute(NeoDIN医療機関)
  • UHNS(University Hospital of North Staffordshire NHS Trust/北スタンフォードシャア大学病院)
  • Olsberg Vocational College(オルスバーグ専門学校)

リソース

  • 超純水について
  • ガイド&ホワイトペーパー
  • 純水製造技術
  • 用途
  • 水中の不純物

Blogs

  • Latest Blog
  • Water Purity - Different Types of Pure Water
  • What is Clinical Laboratory Reagent Water (CLSI)?
  • What is Total Organic Carbon (TOC)?
  • 言語
    • Deutsch
    • English
    • Español
    • Français
    • Italiano
    • Português
    • 日本語
    • 中文
  • 他のVeoliaサイト
    • Veolia
    • Veolia Foundation
    • Veolia Water Technologies

©VWS(UK)Ltd.はELGA LabWaterとして取引されています。2023-全著作権所有。
ELGAはVeoliaのグローバルなラボ用水のブランド名です。

  • プライバシーポリシー
  • 利用規約
  • 世界的な法令順守
  • 特許
  • サイト管理者情報
Elga Veolia
TOP

© 2017 ELGA Veolia