Manufacturing of novel low-cost adsorbent: Co-granulation of limestone and coffee waste

Abstract

Limestone and coffee waste were used during the wet co-granulation process for the production of efficient adsorbents to be used in the removal of anionic and cationic dyes. The adsorbents were characterized using different analytical techniques such as XRD, SEM, FTIR, organic elemental analysis, the nitrogen adsorption method, with wettability, strength and adsorption tests. The adsorption capacity of granules was determined by removal of methylene blue (MB) and orange II (OR) from single and mixed solutions. In the mixed solution, co-granules removed 100% of MB and 85% of OR. The equilibria were established after 6 and 480 h for MB and OR, respectively.

Carbon Adsorbents from Spent Coffee for Removal of Methylene Blue and Methyl Orange from Water

“…Indeed, because very large amounts of SCD are available worldwide, SCD-based adsorbents have become a subject of intense research and development. SCD has been studied both in its parent, untreated form [ 3 , 25 , 26 , 27 , 28 , 29 , 30 ] and in the form of ACs made from SCD [ 31 , 32 , 33 , 34 , 35 ]. Typical procedures involve the impregnation of SCD with ZnCl 2 and H 3 PO 4 or treatments with NaOH before carbonization.…”

One-step preparation of a novel SrCO3/g-C3N4 nano-composite and its application in selective adsorption of crystal violet

“…[43][44][45] However, certain deciencies including costly, intricate pre-treatment and low adsorption capability limited the use of some certain adsorbents. [46][47][48][49][50][51][52][53] Due to the conjugated region, stacking structure and the weak forces of g-C 3 N 4 , it has the potential for aggregating functional groups or materials to form nanocomposite with multiform favorable properties. [54][55][56] This distinctive structure has drawn great interesting in improving the photocatalytic performance.…”

Utilization of a novel activated carbon adsorbent from press mud of sugarcane industry for the optimized removal of methyl orange dye in aqueous solution

“…The optimum pH 2.0 that was published elsewhere was used in all experimental runs in the present work (Iakovleva et al 2017). To achieve the desired optimal pH condition of 2.0, the experiments were adjusted by 1 M NaOH or 1 M HCl using pH meter (Hanna pH meter HI98129).…”

“…To reduce the high costs, agricultural wastes and residues are used as a precursor for activated carbon (Ahmad et al 2014). In fact, cherry kernels (Iakovleva et al 2017), rice bran (Hong and Wang 2017), coir pith ash (Bahar et al 2018), wheat straw (Lin et al 2017), potato residue (Zhang et al 2015), rice straw (Sangon et al 2018), coconut coir dust (Etim et al 2016), orange peels (Rožič et al 2014), and wood apple shell (Sartape et al 2017) among others have been used for dye removal in aqueous solutions in the recent literature. However, most of these contain low adsorption capacity.…”