Preparation of carbon adsorbents from lignosulfonate by phosphoric acid activation for the adsorption of metal ions

Preparation and Characterization of Activated Carbon from Hydrochar by Phosphoric Acid Activation and its Adsorption Performance in Prehydrolysis Liquor

“…Moreover, the absorbance bands of hydrochar between 750 cm -1 to 1000 cm -1 and 1100 cm -1 to 1600 cm -1 were different with ACs that confirmed the chemical transformation occurred during the phosphoric acid activation process. The noticeable chemical difference between the starting material and produced AC was also observed by Myglovetsa et al (2014).…”

“…Nahil and Williams (2012) produced activated carbon with a BET surface area of 1720 m 2 /g using phosphoric acid activation of cotton stalk. Myglovetsa et al (2014) reported that the maximum value, 1370 m 2 /g, of BET surface area of can be achieved at a temperature of 1000 °C when producing a carbon adsorbent from lignosulfonate by phosphoric acid activation.…”

Activation of graphene aerogel with phosphoric acid for enhanced electrocapacitive performance

“…2f). We speculate that such impurities were most likely the phosphorus pentoxide, which was an intermediate of side reaction between carbon atoms and H 3 PO 4 [48]. The elemental mappings of aGA-0.5 sample (Fig.…”

Performance, kinetics, and equilibrium of methylene blue adsorption on biochar derived from eucalyptus saw dust modified with citric, tartaric, and acetic acids

“…The prepared biochar demonstrated the maximum MB adsorption capacity of 427 mg g À1 . Moreover, biochar modified with phosphoric acid, a medium-strong acid, presents high adsorption capacity, but the preparation involves high-temperature pyrolysis (from 350°C to 1000°C) under nitrogen or argon flow (Al Bahri et al, 2012;Myglovets et al, 2014). Few studies have reported the preparation of biochar derived from eucalyptus saw dust modified with various organic acids at low activation temperatures for dye removal.…”