dc.contributor.author | Bao, Jianping | |
dc.contributor.author | Wang, Liang | |
dc.contributor.author | Xiao, Man | |
dc.date.accessioned | 2018-04-13T03:29:10Z | |
dc.date.available | 2018-04-13T03:29:10Z | |
dc.date.issued | 2016 | |
dc.identifier.issn | 0944-1344 | |
dc.identifier.doi | 10.1007/s11356-016-6184-5 | |
dc.identifier.uri | http://hdl.handle.net/10072/99946 | |
dc.description.abstract | Solidification/stabilization (S/S) of sediments is frequently used to treat contaminants in dredged sediments. In this study, sediment collected from the Pearl River Delta (China) was solidified/stabilized with three different kinds of functional materials: cement, lime and bentonite. Lime primarily acted via induced increases in pH, while cements stabilization occurred through their silicate-based systems and the main function of bentonite was adsorption. The speciation and leaching behaviors of specific heavy metals before and after S/S were analyzed and the results showed that the residual speciation of Cd, Cr, Ni, Pb and Zn increased in all treatments except for Cu, as the exchangeable speciation, carbonate-bound speciation and Fe-Mn-oxide-bound speciation of Cu (all of which could be stabilized) were less than 2 % of the total amount. Pb leaching only decreased when pH increased, while the mobility of Cr and Ni only decreased in response to the silicate-based systems. The leached portion of the Fe-Mn-oxide-bound speciation followed the order Zn > Cu > Ni/Cd > Pb > Cr. The leached portion of organic-matter-bound species was less than 4 % for Cd, Cr, Ni and Pb, but 35.1 % and 20.6 % for Cu and Zn, respectively. | |
dc.description.peerreviewed | Yes | |
dc.language | English | |
dc.language.iso | eng | |
dc.publisher | Springer | |
dc.relation.ispartofpagefrom | 8294 | |
dc.relation.ispartofpageto | 8301 | |
dc.relation.ispartofissue | 9 | |
dc.relation.ispartofjournal | Environmental Science and Pollution Research | |
dc.relation.ispartofvolume | 23 | |
dc.subject.fieldofresearch | Chemical sciences | |
dc.subject.fieldofresearch | Environmental sciences | |
dc.subject.fieldofresearch | Other environmental sciences not elsewhere classified | |
dc.subject.fieldofresearch | Biological sciences | |
dc.subject.fieldofresearchcode | 34 | |
dc.subject.fieldofresearchcode | 41 | |
dc.subject.fieldofresearchcode | 419999 | |
dc.subject.fieldofresearchcode | 31 | |
dc.title | Changes in speciation and leaching behaviors of heavy metals in dredged sediment solidified/stabilized with various materials | |
dc.type | Journal article | |
dc.type.description | C1 - Articles | |
dc.type.code | C - Journal Articles | |
gro.hasfulltext | No Full Text | |
gro.griffith.author | Xiao, Man | |