Abstract：
:This research investigated the performance of lime-BHA (black rice husk ash) solidified plating sludge with 2 wt% NaO from Na(2)SiO(3) and Na(2)CO(3) at the level of 0, 30 and 50 wt%. The sludge was evaluated for strength development, leachability, solution chemistry and microstructure. The lime-BHA solidified plating sludge with Na(2)SiO(3) and Na(2)CO(3) had higher early strength when compared to the control. The addition of Na(2)SiO(3) and Na(2)CO(3) increased the OH(-) concentration and decreased the Ca(2+) and heavy metal ions in solution after the first minute. The XRD patterns showed that the addition of Na(2)SiO(3) resulted in the formation of calcium silicate hydrates, while the addition of Na(2)CO(3) resulted in CaCO(3). The heavy metals from the plating sludge, especially Zn, were immobilized in calcium zincate and calcium zinc silicate forms for the lime-BHA with and without Na(2)SiO(3) solidified wastes, while samples with Na(2)CO(3) contained Zn that was fixed in the form of CaZnCO(3). The cumulative leaching of Fe, Cr and Zn from the lime-BHA solidified plating sludge decreased significantly when activators were added, especially Na(2)CO(3).
journal_name
J Environ Managejournal_title
Journal of environmental managementauthors
Piyapanuwat R,Asavapisit Sdoi
10.1016/j.jenvman.2011.04.004subject
Has Abstractpub_date
2011-09-01 00:00:00pages
2222-8issue
9eissn
0301-4797issn
1095-8630pii
S0301-4797(11)00122-8journal_volume
92pub_type
杂志文章abstract：:In this study, the recovery of manganese (Mn) and iron (Fe) from groundwater treatment sludge through reductive acid leaching and hydroxide precipitation was investigated. Maximum leached Mn (100%) was obtained using sulfuric acid and hydrogen peroxide at 25 °C. Leached Mn and Fe decreased with the increase in the sol...
journal_title：Journal of environmental management
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journal_title：Journal of environmental management
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journal_title：Journal of environmental management
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journal_title：Journal of environmental management
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journal_title：Journal of environmental management
pub_type： 杂志文章,评审
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journal_title：Journal of environmental management
pub_type： 杂志文章
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journal_title：Journal of environmental management
pub_type： 杂志文章
doi：10.1016/j.jenvman.2014.01.050
更新日期：2014-07-01 00:00:00
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pub_type： 杂志文章
doi：10.1016/j.jenvman.2017.06.040
更新日期：2017-10-01 00:00:00
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journal_title：Journal of environmental management
pub_type： 杂志文章
doi：10.1016/j.jenvman.2009.09.033
更新日期：2010-01-01 00:00:00
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pub_type： 杂志文章,评审
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abstract：:Health of millions of people is threatened by the risk of drinking arsenic-contaminated water worldwide. Arsenic naturally conflicts with the concept of life, but recent studies showed that some microorganisms use toxic minerals as the source of energy. Hence, the researchers should consider the development of cost-ef...
journal_title：Journal of environmental management
pub_type： 杂志文章
doi：10.1016/j.jenvman.2018.01.075
更新日期：2018-04-15 00:00:00
abstract：:The application of flue gas desulfurization (FGD) gypsum has been recognized as a feasible measure in enhancing the quality of sodic soils. Quantitative evaluation of the effects of FGD gypsum on three-dimension (3D) pore characteristics is beneficial for understanding the reclamation mechanism of FGD gypsum on sodic ...
journal_title：Journal of environmental management
pub_type： 杂志文章
doi：10.1016/j.jenvman.2019.109303
更新日期：2019-10-15 00:00:00
abstract：:Increase of water erosion is one of the main problems in watersheds all over the world and directly affects soil and water resources, causing economic and environmental losses. We proposed a combination of Genetic Algorithm and Erosion/Deposition modelling to allocate vegetation zones in order to reduce soil losses wi...
journal_title：Journal of environmental management
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abstract：:The 1991 EU Nitrate Directive was designed to reduce water pollution from agriculturally derived nitrates. England and Wales implemented this Directive by controlling agricultural activities within their most vulnerable areas termed Nitrate Vulnerable Zones. These were designated by identifying drinking water catchmen...
journal_title：Journal of environmental management
pub_type： 杂志文章
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