Recovery of gold as a type of porous fiber by using biosorption followed by incineration

Selective recovery of Pd(II) from extremely acidic solution using ion-imprinted chitosan fiber: Adsorption performance and mechanisms

“…Platinum group metals (PGMs), e.g., Pd, Pt, Ru, and Ir, are precious metals and have been extensively used in many fields including catalysis, electrical and electronic industries, owing to their specific physicochemical properties [1][2][3]. The increased market demand and limitation in rare reserves impart high commercial value to these precious metals.…”

Selective biosorption behavior of Escherichia coli biomass toward Pd(II) in Pt(IV)–Pd(II) binary solution

“…The platinum group metals (PGMs) such as rhodium (Rh), platinum (Pt), and palladium (Pd) are widely used in various industries because of their specific physical and chemical properties [1]. The industries generate waste solutions containing valuable PGM [2,3].…”

Biosorption of gold from computer microprocessor leachate solutions using chitin

“…4 shows that about 80% saturation was attained in 30 min, after which the biosorption rate decreased considerably. For comparison, in the case of gold biosorption onto porous fibers, Park et al (2012) found that about 80% saturation was reached in 100 min, using an initial gold concentration of 108.2 mg L À1 , pH of 5.5, and temperature of 298 K.…”

“…At the same time, WEEE contains valuable metals such as, gold, silver, platinum, and cobalt, which can be recovered (Bertuol et al, 2015a;Jing-Ying et al, 2012;Kwak and Yun, 2010). The development of technologies to recover metals from WEEE can therefore help in obtaining valuable products, while at the same time solving an environmental problem (Park et al, 2012;Birloaga et al, 2014;Sun et al, 2015).…”

“…Techniques that have been used to recover gold from solutions include solvent extraction, chemical precipitation, and ion exchange (Fan et al, 2014;Syed, 2012;Zhang et al, 2012). Biosorption, an emerging and eco-friendly technique, is a promising technology for the removal of heavy metals from aqueous solutions , and has been used for the recovery of gold (Abidin et al, 2013;Adhikari et al, 2013;Park et al, 2012). The major advantages of biosorption are its effectiveness in removing heavy metal ions, as well as the ability to use inexpensive biosorbents.…”