PTurning to Nanotechnology for Water Pollution Control: Applications of Nanocomposites

Sodium and acidic alginate foams with hierarchical porosity: Preparation, characterization and efficiency as a dye adsorbent

“…Alginate-based materials have been extensively studied for the sorption of metal ions (An, Lee, Lee, Lee, & Choi, 2015), the encapsulation of bioactive molecules (Hadinoto & Yang, 2014;Raei, Rajabzadeh, Zibaei, Jafari, & Sani, 2015;Sarker et al, 2015) and the immobilization of organic or inorganic exchangers (Guibal, Vincent, & Jouannin, 2009;Krys et al, 2013;Jung et al, 2015;Vincent et al, 2015;Pandey, & Ramontja, 2016;Pandey, 2017). The presence of carboxylic groups may explain these different applications, thanks to the ability of carboxylic ions (present on mannuronic (M) and guluronic (G) acid moieties) to bind metal ions and to form gels by ionotropic gelation (Agulhon, Markova, Robitzer, Quignard, & Mineva, 2012;Agulhon, Robitzer, David, & Quignard, 2012).…”

“…In recent times, water pollution due to organic dyes has become a serious environmental problem (Pandey, & Ramontja, 2016;Pandey, 2017). The development of low-cost adsorbents is an extremely attractive strategy for wastewater remediation and natural biopolymers are often presented as abundant, renewable and biodegradable replacements for conventional adsorbents (Rafatullaha, Sulaimana, Hashima, & Ahmadb, 2010;Crini, 2005).…”

Modified-Nano-Adsorbents for Nitrate Efficient Removal: A Review

“…Adsorption through various adsorbents is a versatile and promising method among other methods for removing pollutants in wastewater. It offers relatively simple method, economic viability, easy operation and recovery [1,19,20]. The substances then accumulate on the adsorbent due to physical and/or chemical interactions [21].…”

Chromium and nickel metal ions removal from contaminated water using Nigerian bentonite clay

“…Metal ions such as mercury, cadmium, chromium, nickel, palladium, and so on are introduced in the environment through natural sources such as weathering and erosion of rocks, and anthropogenic sources such as chemical manufacturing plants, and electroplating, battery, pesticide and fertilizer industries. Even at very low concentrations, these metal ions tend to accumulate in living organisms, causing different health disorders in humans and animals depending on the exposure rate and dosage (Pandey & Tiwari 2015;Pandey & Ramontja 2016b;Adewoye et al 2017). According to WHO, the maximum permissible limit of nickel and chromium in drinking water is 6 μg/L and 50 μg/L respectively (Dogara et al 2017).…”