Academic
Publications
Effect of pH on adsorption of arsenic and selenium from landfill leachate by clay minerals

Effect of pH on adsorption of arsenic and selenium from landfill leachate by clay minerals,10.2136/sssaj1977.03615995004100010019x,Soil Science Societ

Effect of pH on adsorption of arsenic and selenium from landfill leachate by clay minerals   (Citations: 76)
BibTex | RIS | RefWorks Download
Adsorption of As(V), As(III), and Se(IV) anions from municipal landfill leachate solutions by the clay minerals kaolinite and montmorillonite is strongly dependent upon solution pH. The HâAsOâ⁻ and HSeOâ⁻ ions are the apparent primary As(V) and Se(IV) species being adsorbed by the clay minerals. Activation of the anion adsorption sites on the clay minerals by H/sup +/ ions is important in determining the amount of HSeOâ⁻ ions adsorbed by the clay minerals, but it is apparently not important in determining the amount of HâAsOâ⁻ ions adsorbed. Montmorillonite adsorbed more As(V), As(III), and Se(IV) anions than kaolinite. Although no definite proof is given, the higher adsorption by montmorillonite is attributed to a higher edge surface area. The results of the study suggest that disposal of As and Se wastes in municipal landfills, especially under alkaline conditions, could produce ground water contamination by As and Se.
Journal: Soil Science Society of America Journal - SSSAJ , vol. 41, no. 1, 1977
Cumulative Annual
View Publication
The following links allow you to view full publications. These links are maintained by other sources not affiliated with Microsoft Academic Search.
    • ...Its removal methods are precipitation with ferrihydrite (T.A.I. MSE, 2001), membrane filtration (Mavrov et al, 2006; Prats et al, 2000), microbial reduction (Catal et al, 2009; Yee et al, 2007), and ion exchange (Breen, 1999) The adsorption of selenium in oxides has been characterized through a number of studies (Duc et al, 2003; Frost and Griffin, 1977 Kuan et al, 1998; Parida et al, 1997; Peak and Sparks, 2002 Rovira et al, 2008; Wijnja and Schulthess, 2000 You et al, 2001; Zhang et al, 2008, Zhuang and Yu, 2002

      ...

    Daeik Kimet al. Feasibility study on crosslinked biopolymeric concrete encapsulating s...

    • ...The adsorption of selenium in oxides has been characterized through a number of studies (Duc et al, 2003; Frost and Griffin, 1977; Kuan et al, 1998; Parida et al, 1997; Peak and Sparks, 2002; Rovira et al, 2008; Wijnja and Schulthess, 2000; You et al, 2001; Zhang et al, 2008, Zhuang and Yu, 2002)...

    Daeik Kimet al. Feasibility study on cross-linked biopolymeric concrete encapsulating ...

    • ...Furthermore, oxidized As(V) has been shown strongly adsorb to kaolinite and montmorillonite (Frost and Griffin 1977 ;O ’Day et al. 2005) as well as secondary iron minerals (Hering and Dixit 2005) at circumneutral pH values, both of which exist within the NFGR watershed due to the predominance of the Ludlow member commonly comprised of silty sandstone interbedded with locally bentonitic, gray siltstone, claystone, and sandy to silty ...

    Lance N. Larsonet al. Sediment-bound Arsenic and Uranium Within the Bowman–Haley Reservoir, ...

    • ... 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 Sequential extraction of As-contaminated soils has indicated that arsenic was primarily associated with crystalline and amorphous iron oxides, 45 , 46 , 47 so As sorption on amorphous and crystalline iron hydroxides has shown great potential to remediate contaminated soils...

    Patricia Miretzkyet al. Remediation of Arsenic-Contaminated Soils by Iron Amendments: A Review

    • ...For example, the concentration of dissolved organic carbon (DOC) in municipal waste leachates is one of the most important factors involved in the solubilisation and subsequent migration of metals through soils (Frost and Griffin 1977; Artiola-Fortuny and Fuller 1982)...

    K. Langeet al. Diffusion of metals in geosynthetic clay liners

Sort by: