File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Red Mud Powders as Low-Cost and Efficient Catalysts for Persulfate Activation: Pathways and Reusability of Mineralizing Sulfadiazine

TitleRed Mud Powders as Low-Cost and Efficient Catalysts for Persulfate Activation: Pathways and Reusability of Mineralizing Sulfadiazine
Authors
KeywordsAdvanced oxidation
Persulfate
Quantitative XRD
Red mud catalyst
Sulfadiazine
Issue Date2016
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/seppur
Citation
Separation and Purification Technology, 2016, v. 167, p. 136-145 How to Cite?
AbstractRed mud powders were used as catalysts for persulfate activation with sulfadiazine as the target contaminant. The quantitative analysis of red mud powders showed that hematite, perovskite, andradite, cancrinite, diaspore, gibbsite, and calcite were the major compositions of red mud powders. Radical identification showed hydroxyl and sulfate radicals were probably generated and responsible for sulfadiazine degradation. To evaluate the catalytic efficiency of red mud powders toward persulfate, the degradation of sulfadiazine in the red mud powders/persulfate system was determined under various experimental conditions. The results showed that the rate of sulfadiazine degradation responded positively to increases in persulfate dosage, and that a scavenger effect from the loading of red mud powders occurred. Under the conditions of 1.75 mM persulfate and 2 g/L red mud powders, approximately 100% of the sulfadiazine could be degraded. Meanwhile, less than 10% of the persulfate was consumed after 180 min under the same conditions. Based on the products identified, an SO2 extraction-dominated degradation pathway was proposed. The quantitative X-ray diffraction study and series of beneficial use experiments showed that the red mud powders had a high stability and a persistent catalytic efficiency, with degradation rates of 94.0%, 92.5%, 92.1%, 87.5% and 87.6% for the 1st, 2nd, 3rd, 4th, and 5th runs, respectively.
Persistent Identifierhttp://hdl.handle.net/10722/234528
ISSN
2019 Impact Factor: 5.774
2015 SCImago Journal Rankings: 1.100
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorFeng, Y-
dc.contributor.authorWu, D-
dc.contributor.authorLiao, C-
dc.contributor.authorDeng, Y-
dc.contributor.authorZhang, T-
dc.contributor.authorShih, K-
dc.date.accessioned2016-10-14T13:47:27Z-
dc.date.available2016-10-14T13:47:27Z-
dc.date.issued2016-
dc.identifier.citationSeparation and Purification Technology, 2016, v. 167, p. 136-145-
dc.identifier.issn1383-5866-
dc.identifier.urihttp://hdl.handle.net/10722/234528-
dc.description.abstractRed mud powders were used as catalysts for persulfate activation with sulfadiazine as the target contaminant. The quantitative analysis of red mud powders showed that hematite, perovskite, andradite, cancrinite, diaspore, gibbsite, and calcite were the major compositions of red mud powders. Radical identification showed hydroxyl and sulfate radicals were probably generated and responsible for sulfadiazine degradation. To evaluate the catalytic efficiency of red mud powders toward persulfate, the degradation of sulfadiazine in the red mud powders/persulfate system was determined under various experimental conditions. The results showed that the rate of sulfadiazine degradation responded positively to increases in persulfate dosage, and that a scavenger effect from the loading of red mud powders occurred. Under the conditions of 1.75 mM persulfate and 2 g/L red mud powders, approximately 100% of the sulfadiazine could be degraded. Meanwhile, less than 10% of the persulfate was consumed after 180 min under the same conditions. Based on the products identified, an SO2 extraction-dominated degradation pathway was proposed. The quantitative X-ray diffraction study and series of beneficial use experiments showed that the red mud powders had a high stability and a persistent catalytic efficiency, with degradation rates of 94.0%, 92.5%, 92.1%, 87.5% and 87.6% for the 1st, 2nd, 3rd, 4th, and 5th runs, respectively.-
dc.languageeng-
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/seppur-
dc.relation.ispartofSeparation and Purification Technology-
dc.subjectAdvanced oxidation-
dc.subjectPersulfate-
dc.subjectQuantitative XRD-
dc.subjectRed mud catalyst-
dc.subjectSulfadiazine-
dc.titleRed Mud Powders as Low-Cost and Efficient Catalysts for Persulfate Activation: Pathways and Reusability of Mineralizing Sulfadiazine-
dc.typeArticle-
dc.identifier.emailLiao, C: liaocz29@connect.hku.hk-
dc.identifier.emailZhang, T: zhangt@hkucc.hku.hk-
dc.identifier.emailShih, K: kshih@hku.hk-
dc.identifier.authorityZhang, T=rp00211-
dc.identifier.authorityShih, K=rp00167-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.seppur.2016.04.051-
dc.identifier.scopuseid_2-s2.0-84966784702-
dc.identifier.hkuros269398-
dc.identifier.volume167-
dc.identifier.spage136-
dc.identifier.epage145-
dc.identifier.isiWOS:000377738800017-
dc.publisher.placeUnited Kingdom-
dc.identifier.issnl1383-5866-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats