Influence of organic matter removal on competitive and noncompetitive adsorption of copper and zinc in acid soils

Pérez-Novo, C.; Pateiro, Mirian; Osorio, Francisco; Nóvoa-Muñoz, Juan Carlos; López-Perı́ago, Eugenio; Arias‐Estévez, Manuel

doi:10.1016/j.jcis.2008.03.002

Cited by 61 publications

(31 citation statements)

References 19 publications

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“…However, the effects of soil properties are not accounted for when using these models. It is well documented that soil constituents such as organic matter (OM) and iron oxides (IOs) play important roles in the sorption of contaminants in soil (Pérez-Novo et al 2008;Agbenin 2010;Agbenin and Olojo 2004;Mustafa et al 2004;Olu-Owolabi et al 2014), but the effects of degradation of soil OM/IO and contaminant/soil contact time on redistribution of contaminants within the soil constituents are hardly known.…”

Section: Introductionmentioning

confidence: 99%

“…The fate of these metals in soils is dependent on their specific sorption reactions with soil constituents (Arias et al 2002;Pérez-Novo et al 2008;Agbenin 2010) which determine their bioavailability and the severity of the harm they cause in the environment (Olu-Owolabi et al 2012). OM and IOs in soils are major natural sinks for metals.…”

Section: Introductionmentioning

confidence: 99%

“…OM in soils are either bound or coated onto other soil mineral fractions. They possess high molecular weights, exhibit low mobility in soil, and have various functional groups endowing them with a high capacity to immobilize potentially toxic metals (Pérez-Novo et al 2008). Tropical soils are especially rich in hydrous IO minerals (hematite, goethite, and ferrihydrite).…”

Section: Introductionmentioning

confidence: 99%

“…The surface chemistry of these oxides is responsible for the adsorption, remobilization, and distribution of toxic metals (Mustafa et al 2004;Spathariotis and Kallianou 2001). Studies have reported noncompetitive and competitive sorptions of heavy metals on soils in relation to its OM or IO contents (Agbenin 2010;Pérez-Novo et al 2008;Arias et al 2002;Juang and Chung 2004;Lai et al 2002;Serrano et al 2005;Shaato 1996). However, in the environmental water solution, metals occur as cocktail and the redistribution of the adsorbed metals is unknown especially for soils prone to environmental degradation.…”

Section: Introductionmentioning

confidence: 99%

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Effects of time, soil organic matter, and iron oxides on the relative retention and redistribution of lead, cadmium, and copper on soils

Diagboya

Olu-Owolabi

Adebowale

2015

Environ Sci Pollut Res

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In order to predict the bioavailability of toxic metals in soils undergoing degradation of organic matter (OM) and iron oxides (IOs), it is vital to understand the roles of these soil components in relation to metal retention and redistribution with time. In this present work, batch competitive sorptions of Pb(II), Cu(II), and Cd(II) were investigated between 1 and 90 days. Results showed that competition affected Cd(II) sorption more than Cu(II) and Pb(II). The sorption followed the trend Pb(II) >>Cu(II)>Cd(II), irrespective of aging, and this high preference for Pb(II) ions in soils reduced with time. Removal of OM led to reduction in distribution coefficient (K d ) values of ≈33 % for all cations within the first day. However, K d increased nearly 100 % after 7 days and over 1000 % after 90-day period. The enhanced K d values indicated that sorptions occurred on the long run on surfaces which were masked by OM. Removal of IO caused selective increases in the K d values, but this was dependent on the dominant soil constituent(s) in the absence of IO. The K d values of the IOdegraded samples nearly remained constant irrespective of aging indicating that sorptions on soil components other than the IO are nearly instantaneous while iron oxides played greater role than other constituents with time. Hence, in the soils studied, organic matter content determines the immediate relative metal retention while iron oxides determine the redistribution of metals with time.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of time, soil organic matter, and iron oxides on the relative retention and redistribution of lead, cadmium, and copper on soils

Diagboya

Olu-Owolabi

Adebowale

2015

Environ Sci Pollut Res

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“…Secondly, the applied method of CEC measurement employs a copper complex and copper preference of adsorption to organic matter has been widely recognized. Also, copper could be involved in formation of complex compounds with organic species [31,32], so adsorption is not the only mechanism of copper retention in soil and sediment.…”

Section: Adsorption Propertiesmentioning

confidence: 99%

Cation exchange capacity of loess and overlying soil in the non-carbonate loess sections, North-Western Croatia

et al. 2013

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The adsorption properties in terms of cation exchange capacity and their relation to the soil and sediment constituents (clay minerals, Fe-, Mn-, and Al-oxyhydroxides, organic matter) were investigated in loess, soil-loess transition zone, and soil at four loess-soil sections in North-Western Croatia. Cation exchange capacity of the bulk samples, the samples after oxalate extraction of Fe, Mn and Al, and after removal of organic matter, as well as of the separated clay fraction, was determined using copper ethylenediamine. Cation exchange capacity (pH∼7) of the bulk samples ranges from 5 to 12 cmolc/kg in soil, from 7 to 15 cmolc/kg in the soil-loess transition zone, and from 12 to 20 cmolc/kg in loess. Generally, CEC values increase with depth. Oxalate extraction of Fe, Mn, and Al, and removal of organic matter cause a CEC decrease of 3–38% and 8–55%, respectively, proving a considerable influence of these constituents to the bulk CEC values. In the separated clay fraction (<2 μm) CEC values are up to several times higher relative to those in the bulk samples. The measured CEC values of the bulk samples generally correspond to the clay mineral content identified. Also, a slight increase in muscovite/illite content with depth and the vermiculite occurrence in the loess horizon are concomitant with the CEC increase in deeper horizons, irrespective of the sample pretreatment.

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Distribution of exogenous phytase activity in soil solid–liquid phases and their effect on soil organic P hydrolysis

Yang

Chen

2016

J. Plant Nutr. Soil Sci.

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The bioavailability and stability of organic phosphorus (P) in the soil may be affected by exogenous phytase (EPase) activity and distribution, but remain poorly understood. The distribution of EPase activity and hydrolysis ability of EPase on organic P in soil solid‐liquid phases was investigated. The EPase addition to soil suspension (1:20, w/v) from three soil types (red soil, brown soil, and cinnamon soil) under three treatments (untreated soil, removing clay from soil, and removing organic matter from soil) with different characters in the solution and solid phases was assayed. The results showed that the disappearance pattern of EPase activity from solution was similar for all soils, whereas the enzyme activity on the solid phase was dependent on soil types and treatments with the greatest in red soil and untreated soil. When EPase was added to soils, the adsorption ratio of organic matter and clay was 10 to 25% and 3 to 7%, respectively, with sorption capacity of organic matter being significantly (p < 0.05) stronger than that of clay. Additionally, soil dehydrogenase activity, which is the indicator of overall soil microbial activities, increased after EPase addition and the two enzymes showed significant negative relation in the soil suspension and solution. At the same time, the organic P decreased significantly (p < 0.05) after the addition of EPase in the soil solid, which had a varied rate under –40% after incubating 192 h, whereas organic P in the solution phase increased significantly (p < 0.05). This study demonstrated that organic matter had a strong protective and adsorptive effect on EPase effectiveness and microbes mightbe directly affect EPase longevity and decay. This finding suggests that EPase activity in the solid phase played a more important role in organic P hydrolysis.

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Influence of organic matter removal on competitive and noncompetitive adsorption of copper and zinc in acid soils

Cited by 61 publications

References 19 publications

Effects of time, soil organic matter, and iron oxides on the relative retention and redistribution of lead, cadmium, and copper on soils

Effects of time, soil organic matter, and iron oxides on the relative retention and redistribution of lead, cadmium, and copper on soils

Cation exchange capacity of loess and overlying soil in the non-carbonate loess sections, North-Western Croatia

Distribution of exogenous phytase activity in soil solid–liquid phases and their effect on soil organic P hydrolysis

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