Arsenic removal with Zero-Valent Iron amended Ceramic Pot Filters

W. A C van Hoorn, L. C. Rietveld, D. van Halem

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

Abstract

The objective of this study was to extend the properties of Ceramic Pot Filters (CPF) with arsenic removal capabilities by incorporating Nano Zero Valent Iron (nZVI) and Composite Iron Matrix (CIM) in the clay mixture before firing. In batch experiments it was found that with 50g/L crushed material of a fired blank filter and of fired filters amended with ZVI the same small amount of arsenic was removed, while ZVI itself is a good arsenic adsorbent. Crushed material of unfired filters containing ZVI showed much faster arsenic removal compared to fired filters. The loose of effectiveness of the fired-in ZVI is probably attributed to the intensive oxidation of the ZVI that took place during firing and to the less available surface sites due to incorporation in the clay. It is therefore not recommended to incorporate ZVI in CPF before firing.

Original languageEnglish
Title of host publicationArsenic Research and Global Sustainability - Proceedings of the 6th International Congress on Arsenic in the Environment, AS 2016
PublisherCRC Press / Balkema
Pages640-641
Number of pages2
ISBN (Print)9781138029415
Publication statusPublished - 2016
Event6th International Congress on Arsenic in the Environment - http://www.as2016.se/, Stockholm, Sweden
Duration: 19 Jun 201623 Jun 2016
Conference number: 6

Conference

Conference6th International Congress on Arsenic in the Environment
Abbreviated titleAS 2016
CountrySweden
CityStockholm
Period19/06/1623/06/16

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    van Hoorn, W. A. C., Rietveld, L. C., & van Halem, D. (2016). Arsenic removal with Zero-Valent Iron amended Ceramic Pot Filters. In Arsenic Research and Global Sustainability - Proceedings of the 6th International Congress on Arsenic in the Environment, AS 2016 (pp. 640-641). CRC Press / Balkema.