Abstract:
:In this study, seven organic amendments (biosolid compost, farm yard manure, fish manure, horse manure, spent mushroom, pig manure, and poultry manure) were investigated for their effects on the reduction of hexavalent chromium [chromate, Cr(VI)] in a mineral soil (Manawatu sandy soil) low in organic matter content. Addition of organic amendments enhanced the rate of reduction of Cr(VI) to Cr(III) in the soil. At the same level of total organic carbon addition, there was a significant difference in the extent of Cr(VI) reduction among the soils treated with organic amendments. There was, however, a significant positive linear relationship between the extent of Cr(VI) reduction and the amount of dissolved organic carbon in the soil. The effect of biosolid compost on the uptake of Cr(VI) from the soil, treated with various levels of Cr(VI) (0-1200 mg Cr kg(-1) soil), was examined with mustard (Brassica juncea L.) plants. Increasing addition of Cr(VI) increased Cr concentration in plants, resulting in decreased plant growth (i.e., phytotoxicity). Addition of the biosolid compost was effective in reducing the phytotoxicity of Cr(VI). The redistribution of Cr(VI) in various soil components was evaluated by a sequential fractionation scheme. In the unamended soil, the concentration of Cr was higher in the organic-bound, oxide-bound, and residual fractions than in the soluble and exchangeable fractions. Addition of organic amendments also decreased the concentration of the soluble and exchangeable fractions but especially increased the organic-bound fraction in soil.
journal_name
J Environ Qualjournal_title
Journal of environmental qualityauthors
Bolan NS,Adriano DC,Natesan R,Koo BJdoi
10.2134/jeq2003.1200subject
Has Abstractpub_date
2003-01-01 00:00:00pages
120-8issue
1eissn
0047-2425issn
1537-2537journal_volume
32pub_type
杂志文章abstract::Increased phosphorus (P) availability under flooded, anaerobic conditions may accelerate P loss from soils to water bodies. Existing knowledge on P release to floodwater from flooded soils is limited to summer conditions and/or room temperatures. Spring snowmelt runoff, which occurs under cold temperatures with freque...
journal_title:Journal of environmental quality
pub_type: 杂志文章
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更新日期:2020-05-01 00:00:00
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journal_title:Journal of environmental quality
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更新日期:2003-11-01 00:00:00
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journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:
更新日期:2005-01-01 00:00:00
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journal_title:Journal of environmental quality
pub_type: 杂志文章
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abstract::During recent decades, a change in land use in the mountainous regions of Northern Thailand has been accompanied by an increased input of agrochemicals. We identified lateral water flow and pesticide transport pathways and mechanisms in a Hapludult on a sloped litchi orchard in Northern Thailand. During two rainy seas...
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pub_type: 杂志文章
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更新日期:2007-06-27 00:00:00
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journal_title:Journal of environmental quality
pub_type: 杂志文章
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journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2006.0218
更新日期:2007-06-27 00:00:00
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journal_title:Journal of environmental quality
pub_type: 杂志文章
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更新日期:2004-05-01 00:00:00
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journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2015.08.0434
更新日期:2016-05-01 00:00:00
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journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2015.01.0010
更新日期:2015-07-01 00:00:00
abstract::Knowledge about environmental impacts associated with the application of anaerobic digestion residue to agricultural land is of interest owing to the rapid proliferation of biogas plants worldwide. However, virtually no information exists concerning how soil-emitted NO is affected by the feedstock hydraulic retention ...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2017.03.0117
更新日期:2017-09-01 00:00:00
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journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2017.08.0335
更新日期:2018-05-01 00:00:00
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journal_title:Journal of environmental quality
pub_type: 杂志文章
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更新日期:2020-12-10 00:00:00
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journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2006.0466
更新日期:2007-05-25 00:00:00
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journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2003.0097
更新日期:2005-04-20 00:00:00
abstract::The pH-dependent release of cadmium, copper, and lead from soil materials was studied by use of a stirred flow cell to quantify their release and release rates, and to evaluate the method as a test for the bonding strength and potential mobility of heavy metals in soils. Soil materials from sludge-amended and nonamend...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2002.1901
更新日期:2002-11-01 00:00:00
abstract::High levels of fecal indicator bacteria (FIB) are the leading cause of surface water quality impairments in the United States. Watershed-scale models are commonly used to identify relative contributions of watershed sources and to evaluate the effectiveness of remediation strategies. However, most existing models simp...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2014.06.0255
更新日期:2014-11-01 00:00:00
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journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2001.2105
更新日期:2001-11-01 00:00:00
abstract::In their natural state, river floodplains are heterogeneous and dynamic ecosystems that may retain and remove large quantities of nitrogen from surface waters. We compared the soil nitrogen dynamics in different types of habitat patches in a restored and a channelized section of a Thur River floodplain (northeast Swit...
journal_title:Journal of environmental quality
pub_type: 杂志文章
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journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:
更新日期:2004-03-01 00:00:00
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journal_title:Journal of environmental quality
pub_type: 杂志文章
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journal_title:Journal of environmental quality
pub_type: 杂志文章
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更新日期:2006-10-27 00:00:00
abstract::Perchlorate (ClO4-) contamination of ground water and surface water is a widespread problem, particularly in the western United States. This study examined the effect of biodegradation on perchlorate fate and transport in soils. Solute transport experiments were conducted on two surface soils. Pulses of solution conta...
journal_title:Journal of environmental quality
pub_type: 杂志文章
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更新日期:2003-01-01 00:00:00
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journal_title:Journal of environmental quality
pub_type: 杂志文章
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更新日期:2003-07-01 00:00:00
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journal_title:Journal of environmental quality
pub_type: 杂志文章
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更新日期:2002-05-01 00:00:00
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更新日期:2016-11-01 00:00:00
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更新日期:2002-01-01 00:00:00
abstract::Many soils of the Mediterranean region with a semiarid climate are subjected to progressive degradation as a result of water erosion. Biosolids and municipal solid wastes (MSW) were surface-applied once at three rates (40, 80, and 120 Mg ha(-1)) to different plots in a degraded semiarid ecosystem. The study was conduc...
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pub_type: 杂志文章
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更新日期:2003-03-01 00:00:00