Photocatalytic hydrogels for removal of organic contaminants from aqueous solution in continuous flow reactors

Light-driven degradation of organic contaminants by photocatalytic nanoparticles has attracted significant attention for wastewater treatment applications. However, implementation of these approaches has been limited by challenges in reactor design, which often require post-treatment separation of n...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Reaction chemistry & engineering 2020-02, Vol.5 (2), p.377-386
Hauptverfasser: Katzenberg, Adlai, Raman, Akash, Schnabel, Nicole L, Quispe, Andrea L, Silverman, Andrea I, Modestino, Miguel A
Format: Artikel
Sprache:eng
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
container_end_page 386
container_issue 2
container_start_page 377
container_title Reaction chemistry & engineering
container_volume 5
creator Katzenberg, Adlai
Raman, Akash
Schnabel, Nicole L
Quispe, Andrea L
Silverman, Andrea I
Modestino, Miguel A
description Light-driven degradation of organic contaminants by photocatalytic nanoparticles has attracted significant attention for wastewater treatment applications. However, implementation of these approaches has been limited by challenges in reactor design, which often require post-treatment separation of nanoparticles or exhibit low reactivity owing to immobilization of particles at the surface of heterogeneous supports. In this work, we present a material design strategy that circumvents these challenges by encapsulating photocatalytic particles in three-dimensional polymer networks, leading to structurally-stable photocatalytic hydrogels that were used as the walls of a flow reactor. This design leverages the volumetric reactions of commonly-implemented slurry reactors but circumvents the need for downstream separation of photocatalytic particles. A two-step soft lithography technique was used to fabricate a patterned poly(hydroxyethyl methacrylate- co -acrylic acid) hydrogel composite with embedded titanium dioxide (TiO 2 ) nanoparticles that were employed as a photocatalyst. In this configuration, contaminant molecules introduced via a flow channel were absorbed into the hydrogel, and subsequently diffused to the surface of the embedded photocatalyst particles where they were oxidized upon light irradiation. Using reactor configurations with low residence times (15 seconds) and moderate UV irradiation (0.28 mW cm −2 at 365 nm), we demonstrated removal of up to 33% of model contaminant methylene blue (MB) and 13% of the antibiotic norfloxacin, both of which were introduced at a concentration of 3 mg L −1 . The influence of molecular design parameters, such as hydrogel ionic strength, crosslinking density, and photocatalyst loading on transport and reactor performance were investigated and shown to have a strong influence on the transport properties of the hydrogels, providing options for optimizing the material to enhance treatment efficiency. We present soft-lithography patterned photocatalyst-embedded hydrogel reactors with tunable material properties for removal of organic contaminants from wastewater.
doi_str_mv 10.1039/c9re00456d
format Article
fullrecord <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_journals_2350357904</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>2350357904</sourcerecordid><originalsourceid>FETCH-LOGICAL-c281t-e850ae3580640a001cdbc736da03b482394e2d05e1d35bc215b4f015fb72725f3</originalsourceid><addsrcrecordid>eNpN0N9LwzAQB_AiCo65F9-FgG_C9JI0bfooc_6AgSL6XNI03Tra3ExSZf-92Sbq0x3Hh7vjmyTnFK4p8OJGF84ApCKrj5IRAyGnhZT8-F9_mky8XwMAzQC4zEeJfVlhQK2C6rah1WS1rR0uTedJg4440-On6gg2BN1S2Qg02qD61iobonHYE_UxGBw88dgNoUVLWrtXrR1246bDr7hI6YDOnyUnjeq8mfzUcfJ-P3-bPU4Xzw9Ps9vFVDNJw9RIAcpwISFLQcV3dV3pnGe1Al6lkvEiNawGYWjNRaUZFVXaABVNlbOciYaPk8vD3o3D-J4P5RoHZ-PJknEBXOQFpFFdHZR26L0zTblxba_ctqRQ7iItZ8XrfB_pXcQXB-y8_nV_kfNvdHB03A</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>2350357904</pqid></control><display><type>article</type><title>Photocatalytic hydrogels for removal of organic contaminants from aqueous solution in continuous flow reactors</title><source>Royal Society Of Chemistry Journals</source><creator>Katzenberg, Adlai ; Raman, Akash ; Schnabel, Nicole L ; Quispe, Andrea L ; Silverman, Andrea I ; Modestino, Miguel A</creator><creatorcontrib>Katzenberg, Adlai ; Raman, Akash ; Schnabel, Nicole L ; Quispe, Andrea L ; Silverman, Andrea I ; Modestino, Miguel A</creatorcontrib><description>Light-driven degradation of organic contaminants by photocatalytic nanoparticles has attracted significant attention for wastewater treatment applications. However, implementation of these approaches has been limited by challenges in reactor design, which often require post-treatment separation of nanoparticles or exhibit low reactivity owing to immobilization of particles at the surface of heterogeneous supports. In this work, we present a material design strategy that circumvents these challenges by encapsulating photocatalytic particles in three-dimensional polymer networks, leading to structurally-stable photocatalytic hydrogels that were used as the walls of a flow reactor. This design leverages the volumetric reactions of commonly-implemented slurry reactors but circumvents the need for downstream separation of photocatalytic particles. A two-step soft lithography technique was used to fabricate a patterned poly(hydroxyethyl methacrylate- co -acrylic acid) hydrogel composite with embedded titanium dioxide (TiO 2 ) nanoparticles that were employed as a photocatalyst. In this configuration, contaminant molecules introduced via a flow channel were absorbed into the hydrogel, and subsequently diffused to the surface of the embedded photocatalyst particles where they were oxidized upon light irradiation. Using reactor configurations with low residence times (15 seconds) and moderate UV irradiation (0.28 mW cm −2 at 365 nm), we demonstrated removal of up to 33% of model contaminant methylene blue (MB) and 13% of the antibiotic norfloxacin, both of which were introduced at a concentration of 3 mg L −1 . The influence of molecular design parameters, such as hydrogel ionic strength, crosslinking density, and photocatalyst loading on transport and reactor performance were investigated and shown to have a strong influence on the transport properties of the hydrogels, providing options for optimizing the material to enhance treatment efficiency. We present soft-lithography patterned photocatalyst-embedded hydrogel reactors with tunable material properties for removal of organic contaminants from wastewater.</description><identifier>ISSN: 2058-9883</identifier><identifier>EISSN: 2058-9883</identifier><identifier>DOI: 10.1039/c9re00456d</identifier><language>eng</language><publisher>Cambridge: Royal Society of Chemistry</publisher><subject>Acrylic acid ; Antibiotics ; Aqueous solutions ; Configurations ; Contaminants ; Continuous flow ; Crosslinking ; Design parameters ; Dimensional stability ; Hydrogels ; Light irradiation ; Methylene blue ; Nanoparticles ; Norfloxacin ; Organic contaminants ; Photocatalysis ; Photocatalysts ; Photodegradation ; Polyhydroxyethyl methacrylate ; Reactor design ; Reactors ; Separation ; Slurries ; Slurry reactors ; Transport properties ; Ultraviolet radiation ; Wastewater treatment</subject><ispartof>Reaction chemistry &amp; engineering, 2020-02, Vol.5 (2), p.377-386</ispartof><rights>Copyright Royal Society of Chemistry 2020</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c281t-e850ae3580640a001cdbc736da03b482394e2d05e1d35bc215b4f015fb72725f3</citedby><cites>FETCH-LOGICAL-c281t-e850ae3580640a001cdbc736da03b482394e2d05e1d35bc215b4f015fb72725f3</cites><orcidid>0000-0001-8199-5860 ; 0000-0003-0016-2539 ; 0000-0003-2100-7335 ; 0000-0003-0440-4486 ; 0000-0002-4793-5853</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids></links><search><creatorcontrib>Katzenberg, Adlai</creatorcontrib><creatorcontrib>Raman, Akash</creatorcontrib><creatorcontrib>Schnabel, Nicole L</creatorcontrib><creatorcontrib>Quispe, Andrea L</creatorcontrib><creatorcontrib>Silverman, Andrea I</creatorcontrib><creatorcontrib>Modestino, Miguel A</creatorcontrib><title>Photocatalytic hydrogels for removal of organic contaminants from aqueous solution in continuous flow reactors</title><title>Reaction chemistry &amp; engineering</title><description>Light-driven degradation of organic contaminants by photocatalytic nanoparticles has attracted significant attention for wastewater treatment applications. However, implementation of these approaches has been limited by challenges in reactor design, which often require post-treatment separation of nanoparticles or exhibit low reactivity owing to immobilization of particles at the surface of heterogeneous supports. In this work, we present a material design strategy that circumvents these challenges by encapsulating photocatalytic particles in three-dimensional polymer networks, leading to structurally-stable photocatalytic hydrogels that were used as the walls of a flow reactor. This design leverages the volumetric reactions of commonly-implemented slurry reactors but circumvents the need for downstream separation of photocatalytic particles. A two-step soft lithography technique was used to fabricate a patterned poly(hydroxyethyl methacrylate- co -acrylic acid) hydrogel composite with embedded titanium dioxide (TiO 2 ) nanoparticles that were employed as a photocatalyst. In this configuration, contaminant molecules introduced via a flow channel were absorbed into the hydrogel, and subsequently diffused to the surface of the embedded photocatalyst particles where they were oxidized upon light irradiation. Using reactor configurations with low residence times (15 seconds) and moderate UV irradiation (0.28 mW cm −2 at 365 nm), we demonstrated removal of up to 33% of model contaminant methylene blue (MB) and 13% of the antibiotic norfloxacin, both of which were introduced at a concentration of 3 mg L −1 . The influence of molecular design parameters, such as hydrogel ionic strength, crosslinking density, and photocatalyst loading on transport and reactor performance were investigated and shown to have a strong influence on the transport properties of the hydrogels, providing options for optimizing the material to enhance treatment efficiency. We present soft-lithography patterned photocatalyst-embedded hydrogel reactors with tunable material properties for removal of organic contaminants from wastewater.</description><subject>Acrylic acid</subject><subject>Antibiotics</subject><subject>Aqueous solutions</subject><subject>Configurations</subject><subject>Contaminants</subject><subject>Continuous flow</subject><subject>Crosslinking</subject><subject>Design parameters</subject><subject>Dimensional stability</subject><subject>Hydrogels</subject><subject>Light irradiation</subject><subject>Methylene blue</subject><subject>Nanoparticles</subject><subject>Norfloxacin</subject><subject>Organic contaminants</subject><subject>Photocatalysis</subject><subject>Photocatalysts</subject><subject>Photodegradation</subject><subject>Polyhydroxyethyl methacrylate</subject><subject>Reactor design</subject><subject>Reactors</subject><subject>Separation</subject><subject>Slurries</subject><subject>Slurry reactors</subject><subject>Transport properties</subject><subject>Ultraviolet radiation</subject><subject>Wastewater treatment</subject><issn>2058-9883</issn><issn>2058-9883</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><recordid>eNpN0N9LwzAQB_AiCo65F9-FgG_C9JI0bfooc_6AgSL6XNI03Tra3ExSZf-92Sbq0x3Hh7vjmyTnFK4p8OJGF84ApCKrj5IRAyGnhZT8-F9_mky8XwMAzQC4zEeJfVlhQK2C6rah1WS1rR0uTedJg4440-On6gg2BN1S2Qg02qD61iobonHYE_UxGBw88dgNoUVLWrtXrR1246bDr7hI6YDOnyUnjeq8mfzUcfJ-P3-bPU4Xzw9Ps9vFVDNJw9RIAcpwISFLQcV3dV3pnGe1Al6lkvEiNawGYWjNRaUZFVXaABVNlbOciYaPk8vD3o3D-J4P5RoHZ-PJknEBXOQFpFFdHZR26L0zTblxba_ctqRQ7iItZ8XrfB_pXcQXB-y8_nV_kfNvdHB03A</recordid><startdate>20200204</startdate><enddate>20200204</enddate><creator>Katzenberg, Adlai</creator><creator>Raman, Akash</creator><creator>Schnabel, Nicole L</creator><creator>Quispe, Andrea L</creator><creator>Silverman, Andrea I</creator><creator>Modestino, Miguel A</creator><general>Royal Society of Chemistry</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><orcidid>https://orcid.org/0000-0001-8199-5860</orcidid><orcidid>https://orcid.org/0000-0003-0016-2539</orcidid><orcidid>https://orcid.org/0000-0003-2100-7335</orcidid><orcidid>https://orcid.org/0000-0003-0440-4486</orcidid><orcidid>https://orcid.org/0000-0002-4793-5853</orcidid></search><sort><creationdate>20200204</creationdate><title>Photocatalytic hydrogels for removal of organic contaminants from aqueous solution in continuous flow reactors</title><author>Katzenberg, Adlai ; Raman, Akash ; Schnabel, Nicole L ; Quispe, Andrea L ; Silverman, Andrea I ; Modestino, Miguel A</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c281t-e850ae3580640a001cdbc736da03b482394e2d05e1d35bc215b4f015fb72725f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Acrylic acid</topic><topic>Antibiotics</topic><topic>Aqueous solutions</topic><topic>Configurations</topic><topic>Contaminants</topic><topic>Continuous flow</topic><topic>Crosslinking</topic><topic>Design parameters</topic><topic>Dimensional stability</topic><topic>Hydrogels</topic><topic>Light irradiation</topic><topic>Methylene blue</topic><topic>Nanoparticles</topic><topic>Norfloxacin</topic><topic>Organic contaminants</topic><topic>Photocatalysis</topic><topic>Photocatalysts</topic><topic>Photodegradation</topic><topic>Polyhydroxyethyl methacrylate</topic><topic>Reactor design</topic><topic>Reactors</topic><topic>Separation</topic><topic>Slurries</topic><topic>Slurry reactors</topic><topic>Transport properties</topic><topic>Ultraviolet radiation</topic><topic>Wastewater treatment</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Katzenberg, Adlai</creatorcontrib><creatorcontrib>Raman, Akash</creatorcontrib><creatorcontrib>Schnabel, Nicole L</creatorcontrib><creatorcontrib>Quispe, Andrea L</creatorcontrib><creatorcontrib>Silverman, Andrea I</creatorcontrib><creatorcontrib>Modestino, Miguel A</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Reaction chemistry &amp; engineering</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Katzenberg, Adlai</au><au>Raman, Akash</au><au>Schnabel, Nicole L</au><au>Quispe, Andrea L</au><au>Silverman, Andrea I</au><au>Modestino, Miguel A</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Photocatalytic hydrogels for removal of organic contaminants from aqueous solution in continuous flow reactors</atitle><jtitle>Reaction chemistry &amp; engineering</jtitle><date>2020-02-04</date><risdate>2020</risdate><volume>5</volume><issue>2</issue><spage>377</spage><epage>386</epage><pages>377-386</pages><issn>2058-9883</issn><eissn>2058-9883</eissn><abstract>Light-driven degradation of organic contaminants by photocatalytic nanoparticles has attracted significant attention for wastewater treatment applications. However, implementation of these approaches has been limited by challenges in reactor design, which often require post-treatment separation of nanoparticles or exhibit low reactivity owing to immobilization of particles at the surface of heterogeneous supports. In this work, we present a material design strategy that circumvents these challenges by encapsulating photocatalytic particles in three-dimensional polymer networks, leading to structurally-stable photocatalytic hydrogels that were used as the walls of a flow reactor. This design leverages the volumetric reactions of commonly-implemented slurry reactors but circumvents the need for downstream separation of photocatalytic particles. A two-step soft lithography technique was used to fabricate a patterned poly(hydroxyethyl methacrylate- co -acrylic acid) hydrogel composite with embedded titanium dioxide (TiO 2 ) nanoparticles that were employed as a photocatalyst. In this configuration, contaminant molecules introduced via a flow channel were absorbed into the hydrogel, and subsequently diffused to the surface of the embedded photocatalyst particles where they were oxidized upon light irradiation. Using reactor configurations with low residence times (15 seconds) and moderate UV irradiation (0.28 mW cm −2 at 365 nm), we demonstrated removal of up to 33% of model contaminant methylene blue (MB) and 13% of the antibiotic norfloxacin, both of which were introduced at a concentration of 3 mg L −1 . The influence of molecular design parameters, such as hydrogel ionic strength, crosslinking density, and photocatalyst loading on transport and reactor performance were investigated and shown to have a strong influence on the transport properties of the hydrogels, providing options for optimizing the material to enhance treatment efficiency. We present soft-lithography patterned photocatalyst-embedded hydrogel reactors with tunable material properties for removal of organic contaminants from wastewater.</abstract><cop>Cambridge</cop><pub>Royal Society of Chemistry</pub><doi>10.1039/c9re00456d</doi><tpages>1</tpages><orcidid>https://orcid.org/0000-0001-8199-5860</orcidid><orcidid>https://orcid.org/0000-0003-0016-2539</orcidid><orcidid>https://orcid.org/0000-0003-2100-7335</orcidid><orcidid>https://orcid.org/0000-0003-0440-4486</orcidid><orcidid>https://orcid.org/0000-0002-4793-5853</orcidid></addata></record>
fulltext fulltext
identifier ISSN: 2058-9883
ispartof Reaction chemistry & engineering, 2020-02, Vol.5 (2), p.377-386
issn 2058-9883
2058-9883
language eng
recordid cdi_proquest_journals_2350357904
source Royal Society Of Chemistry Journals
subjects Acrylic acid
Antibiotics
Aqueous solutions
Configurations
Contaminants
Continuous flow
Crosslinking
Design parameters
Dimensional stability
Hydrogels
Light irradiation
Methylene blue
Nanoparticles
Norfloxacin
Organic contaminants
Photocatalysis
Photocatalysts
Photodegradation
Polyhydroxyethyl methacrylate
Reactor design
Reactors
Separation
Slurries
Slurry reactors
Transport properties
Ultraviolet radiation
Wastewater treatment
title Photocatalytic hydrogels for removal of organic contaminants from aqueous solution in continuous flow reactors
url https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-12-24T18%3A32%3A04IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Photocatalytic%20hydrogels%20for%20removal%20of%20organic%20contaminants%20from%20aqueous%20solution%20in%20continuous%20flow%20reactors&rft.jtitle=Reaction%20chemistry%20&%20engineering&rft.au=Katzenberg,%20Adlai&rft.date=2020-02-04&rft.volume=5&rft.issue=2&rft.spage=377&rft.epage=386&rft.pages=377-386&rft.issn=2058-9883&rft.eissn=2058-9883&rft_id=info:doi/10.1039/c9re00456d&rft_dat=%3Cproquest_cross%3E2350357904%3C/proquest_cross%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=2350357904&rft_id=info:pmid/&rfr_iscdi=true