Adsorption modeling of Orange G dye on mesoporous activated carbon prepared from Algerian date pits using experimental designs

Abstract

A B S T R AC TActivated carbon was prepared from Algerian date pits using physicochemical activation method consisted of zinc chloride (ZnCl 2 ) treatment and carbon dioxide (CO 2 ) gasifi cation. The activated carbon produced was characterized by BET surface area, porosity development (total pore volume and micropore fraction). Adsorption of Orange G dye (OG) from water was studied using the prepared activated carbon. A three-factor central composite design (CCD) combined with response surface modeling (RSM) was employed for maximizing OG removal from aqueous solution by the activated carbon based on 20 different experimental data obtained in a batch study, the effects of various parameters such us agitation time, initial dye concentration and adsorbent dosage were studied. The signifi cant factors on experimental designs response were identifi ed from the analysis of variance (ANOVA). FTIR spectral result indicated all the functional groups were involved in the adsorption process. SEM results showed that the surface of the activated carbon was turned from dark to light color after dye adsorption.

Batch and fixed bed column studies on removal of Orange G acid dye by a weak base functionalized polymer

“…Mesoporous-activated carbon of various origins was tested for OG [7][8][9][10][11]. The maximum adsorption capacity of these activated carbon adsorbents, from 9.129 to 236.07 mg g −1 [7,8], is still lower than that of some functionalized adsorbents.…”

Adsorbent Minimization for Removal of Ibuprofen from Water in a Two-Stage Batch Process

“…Some studies have reported the synthesis of activated carbons from date stones, often termed date pits [32,33] using phosphoric acid [34], zinc chloride [35], and carbon dioxide [36]. The methodologies of converting date stones into activated carbons have yielded a variety of pollutant-removal applications for this material, such as pesticides [37], dyes [38][39][40], heavy metals [38,41,42], and pharmaceuticals [43,44].…”

Adsorbent Minimisation for Removal of Ibuprofen from Water in a Two-Stage Batch Process

“…Some studies have reported the production of activated carbons from date stones often termed date pits (Merzougui et al 2011;Danish et al 2014) using phosphoric acid (Girgis and El-Hendawy 2002), zinc chloride (Cherik and Louhab 2017) and carbon dioxide (Suresh Kumar Reddy et al 2013). The methodologies of converting date stones into activated carbons have yielded a variety of pollutant removal applications for this material, such as, pesticides (Hameed et al 2009;Hassan et al 2020), dyes (Al-Ghouti et al 2010Bouchemal et al 2012;Messaoudi et al 2016), heavy metals (Al-Ghouti et al 2010;Bouhamed et al 2012;Mangwandi et al 2020) and pharmaceuticals (Belhamdi et al 2016;Darweesh and Ahmed 2017).…”