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[ClickPress, Tue Mar 05 2019] On the back of superlative adsorption capabilities, the adoption of inorganic nano porous adsorbents
is on a persistent rise.
Among the biomasses, algae have the advantage of being very inexpensive compared to other commercial adsorbents
, such as activated carbon.
Removal efficiency (%) of adsorbents
did not change with the further increase in time, because all the active sites were occupied.
In general, adsorbents
are assumed to be "low cost" if little processing is required before use, or is a waste material or by-product from industry or abundantly available in nature.
To establish concentration at which driving force is optimal, 25 [cm.sup.3] of varying concentrations of PNP (10 to 70 mg/L) with 0.2 g of each of the adsorbents
was agitated for six hours on a thermostated water bath shaker operated at 30[degrees]C.
Metal Adsorption from Multielement Solution with Hydrophilic Sulfur-Containing Adsorbents
Consequently, there is an increased interest from researchers into low-cost, effective alternative adsorbents
. Many natural materials used in the adsorption of heavy metals (cadmium, copper, chromium, lead, nickel, cobalt, and lithium), such as Diplotaxis harra, Glebionis coronaria, coffee grounds, banana peel, fruit and vegetable peels, cactus, rice straw, wheat straw, and salvinia plant, have been discovered [3-8].
Our research group has developed some methodologies based on adsorbents
derived from biomaterials for removing various polluting ions such as chromium (VI) [4, 5], zinc , aluminium (III) , fluoride [8, 9], nitrite , ammonia , phosphate , and dyes  from water.
In recent years, there has been increasing interest in the research of the production of adsorbents
from the agricultural byproducts and industrial wastes for dye removal.
Their forms and locations can only be changed using physical or chemical means, for example, precipitating heavy metal ions using acid or alkaline solvents or adsorbing and accumulating them using adsorbents
. As heavy metal ions are of high economic value, treating heavy metal pollution cannot only alleviate the environmental pollution but also recycle heavy metals .
Also, these traps were recyclable, unlike other adsorbents
Even though activated carbon is regarded as an efficient adsorbent
, several researchers are focusing their research interest towards using agricultural and industrial solid waste materials as adsorbents