NDLI: Characterization of Cr Sorption and Reduction on TiO$

Content Provider	Springer Nature Link
Author	Doan, Dinh Hung Kim, Young Jae Nguyen, Trung Minh Yoon, Hye On Oh, Sae Gang Jo, Ho Young Lee, Young Jae
Copyright Year	2014
Abstract	Cr interactions with TiO$_{2}$ were systematically studied using batch and spectroscopic investigations. Sorption of chromium on TiO$_{2}$ at pH 4.5 increases with increasing Cr concentration. The sorption of Cr(III) is in good agreement with Langmuir isotherm model, whereas that of Cr(VI) is better accounted for by the Freundlich model. At pH 7.0, however, the uptake of Cr(III) by TiO$_{2}$ is over 95 %, while the extent of Cr(VI) sorption on TiO$_{2}$ is much less than that of pH 4.5. These results are consistent with SEM observations showing that precipitates of Cr(III) are dominant under neutral pH. The sorption of Cr(VI) on TiO$_{2}$ decreases with increasing pH. However, Cr(VI) sorption decreases with increasing ionic strength below pH 4.5 whereas the sorption increases with ionic strength above pH 4.5. These observations suggest that Cr(VI) sorption is sensitive to ionic strength, and Cr(VI) could form weakly bound adsorption complexes at the TiO$_{2}$–water interface. Phosphate competes with Cr(VI) for TiO$_{2}$ surface sites during sorption processes, and Cr(VI) desorption accelerates and increases in the presence of phosphate. It is noted that the reduction of Cr(VI) is induced by sunlight on the TiO$_{2}$ surface, but not detected in acidic solution throughout batch experiments at pH ≥ 4.5 for 24 h.
Starting Page	1
Ending Page	11
Page Count	11
File Format	PDF
ISSN	00496979
Journal	Water, Air, and Soil Pollution
Volume Number	226
Issue Number	1
e-ISSN	15732932
Language	English
Publisher	Springer International Publishing
Publisher Date	2014-12-20
Publisher Place	Cham
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Chromium Titanium dioxide Sorption Reduction Phosphate Environment Water Quality/Water Pollution Atmospheric Protection/Air Quality Control/Air Pollution Soil Science & Conservation Hydrogeology Climate Change/Climate Change Impacts
Content Type	Text
Resource Type	Article
Subject	Ecological Modeling Environmental Chemistry Pollution Environmental Engineering Water Science and Technology

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Removal and Recovery of Chromium from Aqueous Solutions by Reduction-Absorption Microreactor

Mechanism and Kinetics of Hexavalent Chromium Chemical Reduction with Sugarcane Molasses

TiO$_{2}$-Mediated Photodegradation of Aqueous Trinitrophenol Irradiated by an Artificial Light Source

Removal of Trace As(V) from Water with the Titanium Dioxide/ACF Composite Electrode

Photocatalysis of a Commercial Naphthenic Acid in Water Using Fixed-Film TiO$_{2}$

Impacts of Nano-TiO$_{2}$ on System Performance and Bacterial Community and Their Removal During Biological Treatment of Wastewater

Application of Commercial Coffee for the Remediation of Hexavalent Chromium-Contaminated Water

Simultaneous Multifunctional Sorption of PFOS and Cr(VI) on Activated Carbon Prepared by One-Step Microwave Activation

Sonocatalytic Reduction of Hexavalent Chromium by Metallic Magnesium Particles

Characterization of Cr Sorption and Reduction on TiO$_{2}$: Batch and XPS Studies

Similar Documents

Removal and Recovery of Chromium from Aqueous Solutions by Reduction-Absorption Microreactor

Mechanism and Kinetics of Hexavalent Chromium Chemical Reduction with Sugarcane Molasses

TiO$_{2}$-Mediated Photodegradation of Aqueous Trinitrophenol Irradiated by an Artificial Light Source

Removal of Trace As(V) from Water with the Titanium Dioxide/ACF Composite Electrode

Photocatalysis of a Commercial Naphthenic Acid in Water Using Fixed-Film TiO$_{2}$

Impacts of Nano-TiO$_{2}$ on System Performance and Bacterial Community and Their Removal During Biological Treatment of Wastewater

Application of Commercial Coffee for the Remediation of Hexavalent Chromium-Contaminated Water

Simultaneous Multifunctional Sorption of PFOS and Cr(VI) on Activated Carbon Prepared by One-Step Microwave Activation

Sonocatalytic Reduction of Hexavalent Chromium by Metallic Magnesium Particles

Characterization of Cr Sorption and Reduction on TiO$_{2}$: Batch and XPS Studies