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You searched for: Author "Swedlund, Peter J." Remove constraint Author: "Swedlund, Peter J." Subject ferrihydrite Remove constraint Subject: ferrihydrite Subject pH Remove constraint Subject: pH
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1. Cadmium (II) distribution in complex aquatic systems containing ferrihydrite, bacteria and an organic ligand: The effect of bioactivity

Author:
Swedlund, Peter J.,   et al.   ; Song, Yantao; Swift, Simon; Singhal, Naresh;     Show all 4 Authors
Source:
Applied geochemistry 2011 v.26 no.5 pp. 898-906
ISSN:
0883-2927
Subject:
Comamonas; bacteria; biodegradation; cadmium; culture media; ferrihydrite; microbial growth; models; pH; phthalic acid; sorption; uncertainty
Abstract:
... The distribution of Cd²⁺ in the presence of phthalic acid (H₂Lₚ), ferrihydrite and bacteria (Comamonas spp.) was investigated in biologically active systems involving H₂Lₚ biodegradation. Tests showed that Cd²⁺ sorption onto bacteria, ferrihydrite and bacteria–ferrihydrite mixture increased with pH in all systems, irrespective of H₂Lₚ degradation or not. The use of bacterial growth medium, Bushnel ...
DOI:
10.1016/j.apgeochem.2011.02.009

2. Arsenate–Ferrihydrite Systems from Minutes to Months: A Macroscopic and IR Spectroscopic Study of an Elusive Equilibrium

Author:
Swedlund, Peter J.,   et al.   ; Holtkamp, Hannah; Song, Yantao; Daughney, Christopher J.;     Show all 4 Authors
Source:
Environmental Science & Technology 2014 v.48 no.5 pp. 2759-2765
ISSN:
1520-5851
Subject:
arsenic; equations; ferrihydrite; models; pH; sorption; spectral analysis
Abstract:
... Sorption by ferrihydrite is an important control on As(V) concentrations in many oxic aquatic systems. There are significant discrepancies in reported sorption constants (log(KAₛ)), which presents a problem for quantifying and understanding this important system. A review of reported ferrihydrite–As(V) sorption studies indicated a positive correlation between reaction time used in the experiments ...
DOI:
10.1021/es404742c