Monoethanolamine extraction of copper-preservative-treated wood and reuse of the extract for wood preservation

Bioremediation and decay of wood treated with ACQ, micronized ACQ, nano-CuO and CCA wood preservatives

“…In light of this concern, the remediation of preservative treated waste wood by chemical extraction with either mineral and organic acids, chelating agents, or bioremediation using fungi and bacteria has been studied in recent years to decontaminate such waste wood before management options such as incineration and landfilling to decrease environmental concerns stated above (Kim and Kim, 1993;Stephan et al, 1993;Kamdem et al, 1998;Clausen and Smith, 1998;Kazi and Cooper 1999;Kartal, 2003;Kartal and K€ ose, 2003;Kartal and Imamura, 2003;Kim et al, 2004;SierraAlvarez, 2009;Janin et al, 2011;Coudert et al, 2013;Hse et al, 2013;Kartal et al, 2014;Pankras et al, 2014). Thus, chemical or bioremediation can be possible alternative processes to remove and reuse metals from wood, and create decontaminated wood.…”

“…More recently, Coudert et al (2013) and Hse et al (2013) have discussed that more strict regulations over the next few years are another difficulty to landfilling or incineration of wood waste treated with Cu preservatives due to reasons of health care and environmental protection. Pankras et al (2014) has stated that landfill option for waste treated wood is a costly option and has potential risks due to emissions of preservatives from the disposal sites.…”

Comparative Performance Evaluation of Absorbents for the Electrowinning-Coupled Competitive Separation CO2 Capture Process

“…Both functional groups, −NH 2 and −OH, are capable of coordinating with Cu 2+ , but −NH 2 is considered to be easier to coordinate with Cu 2+ since some of the −OH groups dissociate at high pH. For MEA solvents, there are four kinds of complexes ([Cu­(MEA)] 2+ , [Cu­(MEA) 2 ] 2+ , [Cu­(MEA) 3 ] 2+ , and [Cu­(MEA) 4 ] 2+ ) formed sequentially with the increase of MEA concentration. − For EDA solvents, two kinds of complexes could be formed, [Cu­(EDA)] 2+ and [Cu­(EDA) 2 ] 2+ . Cu 2+ and NH 3 trend to form [Cu­(NH 3 )] 2+ , [Cu­(NH 3 ) 2 ] 2+ , [Cu­(NH 3 ) 3 ] 2+ , and [Cu­(NH 3 ) 4 ] 2+ …”