For the adsorption of chromium, aquatic weeds (Elangovan et al. 2008; Yun et al. 2001), short-chain polyaniline synthesized on jute fiber (Kumar et al. 2008), grape stalks and yohimbe bark (Fiol et al. 2008), sugarcane bagasse (Garg et al. 2009) and the fungus Coriolus versicolor (Sanghi et al. 2009), among others, have been used.
Regarding removal mechanisms, the removal of nitrogen and phosphorus by all three aquatic plants primarily depended on plant adsorption.
To date, various technologies have been developed with the aim of eliminating antibiotics from the aquatic environment, such as oxidation processes and adsorption [3, 4].
To enhance the value of published genotoxicity data, the role of environmental processes; e.g., dissolution, aggregation and agglomeration, and adsorption of ENPs when released in aquatic systems, should be included, and assay protocols must be standardized.
Carbon nanotubes (CNTs) tend to readily agglomerate and settle down in water, while the adsorption of compounds present in natural aquatic media could enhance their dispersion and stabilization in the water column.
Owing to their remarkable properties, ENMs demonstrate significant potential to disturb the adsorption behavior of other contaminants in aquatic sediments, thereby altering the bioavailability and toxicity of these contaminants.
Experimental studies on environmental processes such as aggregation, disaggregation, dissolution, surface transformation, and adsorption of engineered nanoparticles (ENPs) in the aquatic systems are reported to be influenced by their interactions with natural organic matter (NOMs) and ENPs inherent physicochemical properties.
Testing of chemicals with extremely low solubility is not easy in aquatic systems and many sources of error, such as adsorption to the test containers, are possible.
Assessing bioaccumulation through laboratory tests presents the following several challenges: Testing of chemicals with extremely low solubility is not easy in aquatic systems and many sources of error, such as adsorption to the test containers, are possible.
Several techniques for concentrating aquatic viruses from larger volumes have been developed, including adsorption-elution methods usinglarger pore-size filters (Borrego et al., 1991; Katayama et al., 2002; Kamata and Suzuki, 2003) and pelleting of viruses with ultracentrifugation (Colombet et al., 2007).
