Uptake of phenol from aqueous solutions by adsorption in a Pinus pinaster bark packed bed

Recovery, concentration and purification of phenolic compounds by adsorption: A review

“…Lignin (Suhas and Ribeiro, 2007), acid hydrolysis lignin (Dizhbite et al, 1999), technical hydrolysis lignin (Allen et al, 2005), and formaldehyde-treated pine bark (Vázquez et al, 2006) have been assayed. Removal of phenolics onto different LCM, including woody tea stalk, pine sawdust and sugarcane bagasse (Sakanaka, 2003;Ye et al, 2009) has been reported.…”

Batch and Column Studies of Phenol Adsorption by an Activated Carbon Based on Acid Treatment of Corn Cobs

“…All models presented satisfactory fits to the experimental data, both in terms of r 2 values and estimation of adsorption capacity. The adsorption capacity for the prepared adsorbents, ranging from 36 to 64 mg/L can be considered significant when compared to fixed bed capacity data for other low-cost adsorbents such as sugarcane bagasse, ~12 mg/L [25], pinus bark, ~0.4 mg/L [26], as well as adsorbents produced by phosphoric acid activation of other residues such as spent coffee grounds and Raphanussativus press cake, ~28-34 mg/L [27].Column adsorption capacity was higher in comparison to batch systems under the same initial phenol concentration, 39.5 mg/g.The lack of correspondence between batch and column data is usually attributed to the fact that (i) adsorption in fixed-bed columns does not necessarily operate under equilibrium conditions since the contact time is not sufficiently long for the attainment of equilibrium; (ii) granular adsorbents rarely become totally exhausted in commercial processes, and (iii) chemical or biological changes that occur in the adsorbent cannot be predicted by the isotherms [28].…”

Adsorption of Phenol from Aqueous Solution Using Lantana camara, Forest Waste: Packed Bed Studies and Prediction of Breakthrough Curves

“…In such mode of operations, all the active sites on the adsorbent will be occupied and the adsorbent will be used up completely. Thus, a packed bed column offers a vast number of advantages of operational simplicity, handling large influent flow rates, obtaining high yields and scaling up of the processes (Vázquez et al 2006). The packed column also makes best use of the concentration difference as the driving force required for adsorption which results in a better quality of the effluent (Aksu and Gönen 2004).…”