Book ChapterDOI
Role of Metal-Organic complexation in metal sorption by Soils
Robert D. Harter,Ravendra Naidu +1 more
TLDR
In this article, the authors focus on the interaction between metal cations and dissolved polyfunctional organic compounds of low molecular weight and their potential role in heavy metal contamination of soil and groundwater.Abstract:
Publisher Summary This chapter focuses on the nature of interaction among trace metals in soil solution, dissolved organics in soil solution, and solid surfaces. The interaction between metal cations and dissolved polyfunctional organic compounds of low molecular weight is important because of its role in mineral-weathering and soil-forming processes and its potential role in heavy metal contamination of soil and groundwater. The chapter presents the organics and metals in the soil solution. Dissolved organics that interact with soil constituents and trace metal ions are of two major kinds: a range of low-molecular-weight organic acids—including polyphenols, simple aliphatic acids, amino acids, sugar acids, and hydroxamate siderophores; and a series of soluble humic/fulvic acids. Numerous environmental issues arise in relation to the interaction of metal ions with soluble organics. Some of these include the phytoavailability of metals, plant nutrient availability, toxicological effects of coordinated metal ions on aquatic and marine organisms, and transport of contaminants, particularly in relation to implications for surface and groundwater quality and soil genesis. All of these issues are highly dependent on the nature and concentration of the contaminant in the soil solution phase. Extant research indicates that low-molecular-weight ligands in soil solution may either enhance or retard reactions with solid surfaces—depending on the functional groups on the organic molecule, soil surface properties, and soil solution conditions. It is imperative that increased research efforts be devoted to evaluating the effects of these organics on metal reactions in the soil.read more
Citations
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Journal ArticleDOI
Remediation of heavy metal(loid)s contaminated soils - To mobilize or to immobilize?
Nanthi Bolan,Nanthi Bolan,Anitha Kunhikrishnan,Ramya Thangarajan,Ramya Thangarajan,Jurate Kumpiene,Jin Hee Park,Tomoyuki Makino,M. B. Kirkham,Kirk G. Scheckel +9 more
TL;DR: The remediation of heavy metal(loid) contaminated soils through manipulating their bioavailability using a range of soil amendments will be presented.
Journal ArticleDOI
Role of organic amendments on enhanced bioremediation of heavy metal(loid) contaminated soils
Jin Hee Park,Dane Lamb,Dane Lamb,Periyasamy Paneerselvam,Periyasamy Paneerselvam,Girish Choppala,Girish Choppala,Nanthi Bolan,Nanthi Bolan,Jae Woo Chung +9 more
TL;DR: This review examines the mechanisms for the enhanced bioremediation of metal(loid)s by organic amendments and discusses the practical implications in relation to sequestration and bioavailability of metal-loids in soils.
Journal ArticleDOI
Role of assisted natural remediation in environmental cleanup
TL;DR: In this paper, the use of green plants as a remediation tool in environmental cleanup has also offered some potential, and case studies using lime, phosphate and biosolid amendments have demonstrated, under field conditions, enhanced natural remediation resulting in substantially improved vegetation growth, invigorated microbial population and diversity, and reduced offsite metal transport.
Book ChapterDOI
Arsenic in the Soil Environment: A Review
Journal ArticleDOI
Soil testing for heavy metals.
TL;DR: Soil testing for metal contaminants is a continually evolving process aimed at improving the assessment of environmental and human health hazards associated with heavy metals in soils and plants as mentioned in this paper, which is a challenge for accurate, reliable and precise contaminant hazard assessment criteria for soil and plants can be made.
References
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Journal ArticleDOI
Hard and soft acids and bases
TL;DR: In this paper, the rate data for the generalized nucleophilic displacement reaction were reviewed, and the authors presented a method to estimate the rate of the generalized displacement reaction in terms of the number of nucleophiles.
Book
Critical Stability Constants
TL;DR: Erratum to: Aminocarboxylic Acids to: Iminodiacetic Acid Derivatives to: Peptides to: Aliphatic Amines to: Protonation Values for other Ligands.
Book
Chemical equilibria in soils
TL;DR: In this paper, Chemical equilibria in soils, chemical equilibrium in soil, Chemical equilibrium in soils, مرکز فناوری اطلاعات و اشعر رسانی, ک-شاouرزی
Book
Organic geochemistry of natural waters
TL;DR: The first part of the book as mentioned in this paper is a general overview of the amount and general nature of dissolved organic carbon in natural waters, and the second part is a summary of the data that has accumulated from many disciplines over the last decade.
Book
The Chemistry of Soils
TL;DR: The Chemical Composition of Soils as mentioned in this paper is a well-known topic in the field of soil chemistry, and it has been used extensively in the literature to study the properties of soil.