Adsorption Equilibrium of Polyethylene Glycol in the Copper Electroplating Solution on Activated Carbon

Physically (CO2) activated hydrochars from hickory and peanut hull: preparation, characterization, and sorption of methylene blue, lead, copper, and cadmium

“…[2][3][4][5][6] However, compared to biochar produced by dry pyrolysis, hydrochars generally have lower surface areas and pore volumes and higher volatile organic matter content, which are generally less desirable characteristics for most applications, particularly contaminant adsorption. 12,13 Activated carbons can be produced either through physical or chemical activation. Hydrochars oen have high VOC contents that may not be removed through washing.…”

“…7,8 Activation, which commonly increases surface area and pore volume of pyrogenic biochar, 9 might also improve the characteristics of hydrochar. 13,14 While coconut shells are oen used in commercial production of activated carbon because of its low ash content, activated carbonaceous materials from a variety of alternative feedstocks, such as eucalyptus, coir pith, palm stones, and corn cobs, have been shown to be highly effective in the removal of contaminants such as dyes and heavy metals. 10,11 An additional benet of activation may be the removal of volatile matter through evaporation during heating.…”

Adsorption Capacity and Mechanism of Expanded Graphite for Polyethylene Glycol and Oils

“…In the adsorption of PEG with active carbon as adsorbent, Zhao et al 9 reported the adsorbed molecules lay flat on active carbon surface and isotherms are all Langmuir type. Chang et al 10,11 indicated a high adsorption capacity of 303 g/g during 14 days for PEG with an average MW of 6000 from copper electroplating solutions at 288-313 K. Contrast to the adsorption on activated carbon, basic study of PEG on EG is scarce. The porous structure of EG makes it have adsorption capacity for PEG.…”

Application of Adsorption Microcalorimetry in the Study of Cu(II) Removal Using Magnetic Nanoparticles

“…Many studies have extensively examined the possibilities of using adsorption for the removal of organic substances or heavy metal ions from water and wastewater (Papelis et al 1995;Chang et al 2000Chang et al , 2003ab, 2004aJain and Ali 2000;Wang et al 2002Chiou 2003;Holl et al 2003;Wu et al 2003Wu et al , 2005Den et al 2006;Diaz-Flores et al 2006;Namasivayam and Prathap 2006;Tseng et al 2007). The most common absorbents are porous, such as activated carbon, silicon dioxide, activated aluminium and zeolite.…”