+ Site Statistics
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on LinkedInFollow on LinkedIn

+ Translate

Alkaline fly ash effects on boron sorption and desorption in soils

Alkaline fly ash effects on boron sorption and desorption in soils

Soil Science Society of America journal 65(4): 1101-1108

Application of alkaline fly ash to soils is expected to result in an increase in B sorption capacity. If fly ash is B-rich, B phytotoxicity might occur depending not only on B loads and magnitude of soil sorption capacity for B, but also on the strength of B retention by sorption surfaces of the fly ash amended soils. This strength determines the ease through which B releases into the soil solution. Aged-alkaline fly ash was applied to one calcareous and two acid soils at rates equal to 0, 5, 20, and 50 g kg(-1) of soil, and the impact of fly ash addition on B sorption in these soils was characterized, by means of the parameters (affinity and maximum) obtained through fitting B sorption data to the nonlinear Freundlich, Langmuir isotherms, and the phenomenological equation of Keren et al. Boron was added to the untreated and the fly ash-treated soils, left in contact for 30 d, and its desorbability was studied. It was observed that although B sorption maximum of soils tended to increase upon fly ash addition, the affinity of B to sorption sites remained practically unaltered in most of the cases. Boron sorption was an exothermic reaction and the greatest part (more than 60%) of sorbed B in the fly ash-treated soils could be easily desorbed within 24 h, reaching 80% for the acid soils and 100% for the calcareous soil after 120 h of desorption time. It was concluded that although there was a tendency of an increase in B sorption capacity in most cases upon fly ash addition, this increase was not generally accompanied by an increase in strength of B retention by soil surfaces. A major part of added B in the fly ash-treated soils remained labile enough to be released in the soil solution in a short time.

(PDF emailed within 1 workday: $29.90)

Accession: 003354674

Download citation: RISBibTeXText

Related references

Boron sorption and desorption in soils. Soil Science Society of America Journal 46(1): 27-31, 1982

Distributed Reactivity Model for Sorption by Soils and Sediments. 15. High-Concentration Co-Contaminant Effects on Phenanthrene Sorption and Desorption. Environmental Science and Technology 36(16): 25-34, 2002

Temperature effects on the kinetics and equilibrium of boron sorption and desorption with Penoyer silt loam from Huntington, Utah. Agronomy Abstracts 85, App, 1993

The boron status of Irish soils in relation to the occurrence of boron deficiency in some crops in acid and alkaline soils. Trans. int. Soc. Soil Sci. Comm. II & IV. 2: 167-171, 1953

Effects of SOM, surfactant and pH on the sorption-desorption and mobility of prometryne in soils. Chemosphere 70(11): 2127-2134, 2007

Interactive effects of sulfadiazine and Cu(II) on their sorption and desorption on two soils with different characteristics. Chemosphere 138: 701-707, 2016

Effects of aging on the bioavailability and sorption/desorption behavior of biphenyl in soils. Water Science and Technology 52(8): 95-105, 2005

Effects of methamidophos and glyphosate on copper sorption-desorption behavior in soils. Science in China. Series C, Life Sciences 48 Suppl 1: 67-75, 2005

Effects of heating and autoclaving on sorption and desorption of phosphorus in some forest soils. Biology And Fertility Of Soils: 8, 1063-1072, 2008

Study of the sorption, desorption and sorption isotherms of phosphates in two soils. Memorias del XI Congreso Latinoamericano de la Ciencia del Suelo y II Congreso Cubano de la Ciencia del Suelo Volumen 1: quimica, fisica y biologia de suelos, 11-17 Marzo 1990 La Habana, Cuba: 31-33, 1993

Effects of chemical oxidation on sorption and desorption of PAHs in typical Chinese soils. Environmental Pollution 157(6): 1894-1903, 2009

Effects of aging on sorption/desorption of organic compounds in soils and relation to bioavailability. Abstracts of Papers American Chemical Society 214(1-2): ENVR 165, 1997

Effects of organic acids on cadmium and copper sorption and desorption by two calcareous soils. Environmental Monitoring and Assessment 187(9): 585-585, 2016

Adsorption-desorption of boron in soils and its effect on boron uptake of plant. Acta Pedologica Sinica 35(1): 70-75, 1998