Integrated forward osmosis-adsorption process for strontium-containing water treatment: pre-concentration and solidification

The volume reduction and subsequent solidification of soluble radionuclides have been known as the major challenges in global radioactive water management, with the urgent needs for new technology development. Thus, a novel forward osmosis (FO)-adsorption process was developed for decontamination of...

Full description

Saved in:
Bibliographic Details
Main Authors: Zhang, Xiaoyuan, Liu, Yu
Other Authors: School of Civil and Environmental Engineering
Format: Article
Language:English
Published: 2022
Subjects:
Online Access:https://hdl.handle.net/10356/160270
Tags: Add Tag
No Tags, Be the first to tag this record!
Institution: Nanyang Technological University
Language: English
id sg-ntu-dr.10356-160270
record_format dspace
spelling sg-ntu-dr.10356-1602702022-07-18T07:56:22Z Integrated forward osmosis-adsorption process for strontium-containing water treatment: pre-concentration and solidification Zhang, Xiaoyuan Liu, Yu School of Civil and Environmental Engineering Advanced Environmental Biotechnology Centre (AEBC) Nanyang Environment and Water Research Institute Engineering::Environmental engineering Radioactive Water Strontium Removal The volume reduction and subsequent solidification of soluble radionuclides have been known as the major challenges in global radioactive water management, with the urgent needs for new technology development. Thus, a novel forward osmosis (FO)-adsorption process was developed for decontamination of strontium-containing radioactive water. The FO filtration driven by the osmotic pressure difference across FO membrane was more cost- and energy-effective for pre-concentration and volume reduction of low-concentration radioactive water prior to solidification, whereas subsequent adsorption with a novel adsorbent offered an effective mean for high-efficiency fixation of soluble radioactive on adsorbent. Results showed that the FO unit in the proposed integrated process could lead to a concentration factor of 10, with 90% of water volume reduction. The concentrated stream with a smaller volume from FO was further treated through adsorption of Sr2+ by nanostructured layered sodium vanadosilicate which had an excellent adsorption capacity of 174.3 mg Sr2+/g. It was found that 96.8-99.9% of soluble Sr2+ in FO concentrate could be removed by adsorption within several seconds. As the result, an excellent solidification of Sr2+ with an ultimate concentration factor of 1000 was achieved in the proposed novel integrated FO-adsorption process. These clearly demonstrated that this process would offer an environmentally sustainable and economically viable engineering solution for high-efficiency decontamination of Sr2+-containing radioactive water. Ministry of Education (MOE) This research is supported by the Ministry of Education, Singapore, under the Academic Research Fund Tie 1 (2019-T1-001-092). 2022-07-18T07:56:22Z 2022-07-18T07:56:22Z 2021 Journal Article Zhang, X. & Liu, Y. (2021). Integrated forward osmosis-adsorption process for strontium-containing water treatment: pre-concentration and solidification. Journal of Hazardous Materials, 414, 125518-. https://dx.doi.org/10.1016/j.jhazmat.2021.125518 0304-3894 https://hdl.handle.net/10356/160270 10.1016/j.jhazmat.2021.125518 33652212 2-s2.0-85101637697 414 125518 en 2019-T1-001-092 Journal of Hazardous Materials © 2021 Elsevier B.V. All rights reserved.
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Environmental engineering
Radioactive Water
Strontium Removal
spellingShingle Engineering::Environmental engineering
Radioactive Water
Strontium Removal
Zhang, Xiaoyuan
Liu, Yu
Integrated forward osmosis-adsorption process for strontium-containing water treatment: pre-concentration and solidification
description The volume reduction and subsequent solidification of soluble radionuclides have been known as the major challenges in global radioactive water management, with the urgent needs for new technology development. Thus, a novel forward osmosis (FO)-adsorption process was developed for decontamination of strontium-containing radioactive water. The FO filtration driven by the osmotic pressure difference across FO membrane was more cost- and energy-effective for pre-concentration and volume reduction of low-concentration radioactive water prior to solidification, whereas subsequent adsorption with a novel adsorbent offered an effective mean for high-efficiency fixation of soluble radioactive on adsorbent. Results showed that the FO unit in the proposed integrated process could lead to a concentration factor of 10, with 90% of water volume reduction. The concentrated stream with a smaller volume from FO was further treated through adsorption of Sr2+ by nanostructured layered sodium vanadosilicate which had an excellent adsorption capacity of 174.3 mg Sr2+/g. It was found that 96.8-99.9% of soluble Sr2+ in FO concentrate could be removed by adsorption within several seconds. As the result, an excellent solidification of Sr2+ with an ultimate concentration factor of 1000 was achieved in the proposed novel integrated FO-adsorption process. These clearly demonstrated that this process would offer an environmentally sustainable and economically viable engineering solution for high-efficiency decontamination of Sr2+-containing radioactive water.
author2 School of Civil and Environmental Engineering
author_facet School of Civil and Environmental Engineering
Zhang, Xiaoyuan
Liu, Yu
format Article
author Zhang, Xiaoyuan
Liu, Yu
author_sort Zhang, Xiaoyuan
title Integrated forward osmosis-adsorption process for strontium-containing water treatment: pre-concentration and solidification
title_short Integrated forward osmosis-adsorption process for strontium-containing water treatment: pre-concentration and solidification
title_full Integrated forward osmosis-adsorption process for strontium-containing water treatment: pre-concentration and solidification
title_fullStr Integrated forward osmosis-adsorption process for strontium-containing water treatment: pre-concentration and solidification
title_full_unstemmed Integrated forward osmosis-adsorption process for strontium-containing water treatment: pre-concentration and solidification
title_sort integrated forward osmosis-adsorption process for strontium-containing water treatment: pre-concentration and solidification
publishDate 2022
url https://hdl.handle.net/10356/160270
_version_ 1738844968642936832