Publication Details |
Category | Text Publication |
Reference Category | Journals |
DOI | 10.1016/j.biortech.2007.09.023 |
Title (Primary) | Chemically modified maize cobs waste with enhanced adsorption properties upon methyl orange and arsenic |
Author | Elizalde-González, M.P.; Mattusch, J.; Wennrich, R. |
Source Titel | Bioresource Technology |
Year | 2008 |
Department | ANA |
Volume | 99 |
Issue | 11 |
Page From | 5134 |
Page To | 5139 |
Language | englisch |
Keywords | Methyl orange; Arsenic; Maize; Chemical modification |
Abstract | The surface chemistry of maize naturasorbent was altered in this work by the modifying agents: phosphoric acid and different amines (triethanolamine, diethylenetriamine and 1,4-diaminobutane). Removal of methyl orange (25 mg l-1) was <50% by maize corn cobs modified by phosphorylation and higher by the quaternized samples: 68% with the 1,4-diaminobutane and 73% with the diethylenetriamine modificators. Adsorption of arsenite by the samples modified with phosphoric acid/ammonia was 11 µg g-1, which corresponds to 98% removal from a 550 µg As l-1 solution for an adsorbent dose of 50 mg ml-1. The samples modified by phosphoric acid/urea removed 0.4 µg g-1 arsenate from a 300 µg As l-1 solution. Adsorption of methyl orange, arsenite and arsenate was superior by the chemically modified maize cobs judged against the initial naturasorbent. For comparison, removal by the commercial anion exchanger was 100% for methyl orange, 45% (5 µg g-1) for arsenite and 99% (5 µg g-1) for arsenate. |
Persistent UFZ Identifier | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=903 |
Elizalde-González, M.P., Mattusch, J., Wennrich, R. (2008): Chemically modified maize cobs waste with enhanced adsorption properties upon methyl orange and arsenic Bioresour. Technol. 99 (11), 5134 - 5139 10.1016/j.biortech.2007.09.023 |