NDLI: The Treatment of Actual Industrial Wastewaters Using Electrochemical Techniques

Content Provider	Springer Nature Link
Author	Sáez, Cristina Cañizares, Pablo Llanos, Javier Rodrigo, Manuel A.
Copyright Year	2013
Abstract	The electrochemical oxidation of an actual waste which comes from a chemical plant was studied. This effluent is generated in a polymerization unit and is mainly composed of a great variety of organics (including a complex mixture of water-soluble polymers of very different molecular weights) and solvents. The high variability of the organic load in industrial waste stream (4,000–20,000 mg dm$^{−3}$ of chemical oxygen demand (COD)) makes the study of the system difficult. The results show that the key for an efficient electrolytic treatment is the selection of the anode material. The replacement of dimensional stable anodes by non-active electrodes is technically feasible as it leads to a very efficient process in terms of COD and total organic carbon removal. However, the use of PbO$_{2}$ favours the release of toxic lead ions to the reaction medium. The efficiencies seem to depend on the pH and supporting electrolyte. This does not seem to be related to the electrochemical process, but to the oxidizability of the pollutant (mainly polymers) that should strongly depend on the pH. It is suspected that some functional groups of the polymer were more easily attacked by reagents electrogenerated under extreme pH values and that hypochlorite is less effective than persulphate. Regarding economic viability, electrochemical oxidation with a boron-doped diamond electrode can be used in an economically adequate way for the pretreatment of waste, but the energy cost necessary to deal with mass transfer limitations made this technique unsuitable for its use in a refining process of the quality of an effluent.
Starting Page	252
Ending Page	258
Page Count	7
File Format	PDF
ISSN	18682529
Journal	Electrocatalysis
Volume Number	4
Issue Number	4
e-ISSN	18685994
Language	English
Publisher	Springer US
Publisher Date	2013-05-21
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Actual wastewater Electrolysis Conductive diamond Electrochemistry Physical Chemistry Catalysis Energy Technology
Content Type	Text
Resource Type	Article
Subject	Electrochemistry

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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
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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
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9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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