Efficient removal of Pb (II) by inexpensive magnetic adsorbents prepared from one-pot pyrolysis of waste tyres involved magnetic nanoparticles

Fe(iii) and Cr(vi) ions' removal using AgNPs/GO/chitosan nanocomposite as an adsorbent for wastewater treatment

“…Graphene oxide (GO) was prepared from natural graphite. 38,39 This study used a combination of citrate reduction, sodium borohydride, and silver alloy-synergistic oxidation of carbon monoxide. 100 mL distilled water was mixed with 1.5 g sodium borohydride NaBH 4 , 4.5 g trisodium citrate dihydrate C 6 H 5 -Na 3 O 7 $2H 2 O, and 0.3 g graphite powder.…”

Production and Upgrading of Recovered Carbon Black from the Pyrolysis of End-of-Life Tires

“…Moreover, after further processing [ 68 , 69 ], these activated carbon materials can be employed in a large variety of fields, as depicted in Figure 4 . In recent studies, activated rCB samples were investigated as adsorbents for the separation of compounds in gaseous [ 70 , 71 , 72 ] and liquid [ 73 ] phases (e.g., adsorption of dyes [ 74 , 75 ], organic compounds [ 76 , 77 , 78 , 79 ], and heavy metals [ 80 , 81 , 82 ]), as conductive additives for carbon electrodes of sodium and lithium batteries [ 83 , 84 , 85 , 86 ], as supercapacitors [ 87 ], as catalysts [ 88 , 89 ] and as nanomaterial precursors [ 90 , 91 ]. Even though rCB has been identified as a potential solid fuel (the HHV is within 25 to 34 MJ/kg [ 9 , 21 ]), its low reactivity, slow oxidation kinetics, small particle size, and low bulk density explain why rCB combustion studies are rarely found.…”