Adsorption of Direct Red 80 dye from aqueous solution onto almond shells: Effect of pH, initial concentration and shell type

Acid Liquefaction of Potato (Solanum tuberosum) and Sweet Potato (Ipomoea batatas) Cultivars Peels – Pre-Screening of Antioxidant Activity/Total Phenolic and Sugar Contents

“…In contrast, the spectra of the aqueous extract of both cultivars exhibited the carbohydrate fingerprint region (683 to 1220 cm -1 ). The band at 683 cm -1 and the sharp peak at 1053 cm -1 , which are characteristic of carbohydrates, were assigned to C-H bend and C-O-C stretch signals, respectively (Tipson et al 1959;Monde et al 2004;Ardejani et al 2008;Yona et al 2014). The CH2OH side chain that is related to the C-O-H bending mode, and related to carbohydrates, was clearly observed at 1219 cm -1 (Tipson et al 1959;Nikonenko et al 2000;Kizil et al 2002).…”

Kinetic and Isotherm Analysis of Cu(II) Adsorption onto Almond Shell (Prunus Dulcis)

“…As seen in the figure, a period of 60 minutes was found to be sufficient for removal of Cu(II) with almond shell. Some of the previous researches similarly reported 60 minutes contact time for heavy metal removal with almond shell [15]; in other studies lower [16,17] and higher [14,18] contact times were also reported.…”

Removal of basic dye from aqueous medium using a novel agricultural waste material: Pumpkin seed hull

“…Many researchers have investigated the use of cheap and efficient alternative substitutes to remove dyes from wastewater. Some of these alternative adsorbents are palm ash and chitosan/oil palm ash [7,8], shale oil ash [9], Posidonia oceanica (L.) fibres [10], water-hyacinth [11], pomelo (Citrus grandis) peel [12], de-oiled soya and bottom ash, [13], sunflower seed shells and mandarin peelings [14], sawdust [15], wheat bran [16], guava leaf powder [17] and almond shells [18].…”