摘要:
Metal bioremediation and metal mining strategies can include compositions and methods as follows: (1) A composition and a method for treating water for metal remediation or mining can include a cell and a first oligomer of a metal binding protein expressed on a surface of the cell via a linker, where the linker is tethered to the first oligomer of the metal binding protein and to a surface of the cell, the metal binding protein has specificity for a metal; and the first oligomer of the metal binding protein expressed on the surface of the cell is capable of aggregating with a second oligomer of the metal binding protein in the water upon binding a metal. (2) A composition and a method for treating water for metal remediation or mining can include a cell expressing a membrane metal transporter, where the membrane metal transporter has specificity for a metal, a vacuole transporter; and a metal sequestration protein. (3) A composition and a method for treating water for metal remediation or mining can include a cell including a knocked-out enzyme required in sulfate-assimilation pathway, where the cell has specificity for reactions against a metal.
摘要:
An activated carbon regeneration method of the present invention is for eluting gold from activated carbon on which the gold has been adsorbed and thereafter recycling, in adsorption of the gold, the used activated carbon from which the gold has been eluted, the method including: washing the used activated carbon with an acidic washing liquid, alkaline washing liquid or neutral washing liquid; and when the used activated carbon is washed with the acidic washing liquid, keeping the acidic washing liquid after the washing in an acidic region, or when the used activated carbon is washed with the alkaline washing liquid or neutral washing liquid, keeping the alkaline washing liquid or neutral washing liquid after the washing in an alkaline region or neutral region.
摘要:
Embodiments of the present invention include systems and methods that include a sorption vessel containing a pulp including an aqueous slurry and a sorbent, a screening system at least partially submerged within the pulp and including a housing and a vibratory screening machine including a compression assembly and a screen assembly. The aqueous slurry includes a metal that is adsorbed by the sorbent to form an oversized material in the pulp. The compression assembly compresses the screen assembly into a concave shape and the screen assembly is inclined such that the pulp if fed over a first inclined portion of the screen assembly and the oversized materials are conveyed over a second inclined portion of the screen assembly and removed from the system or conveyed back into the sorption vessel. The undersized material passes through the screen assembly into a portion of the housing separate from the pulp and is discharged to another sorption vessel.
摘要:
Recovering gold from gold-loaded fine carbon by application of thermo-kinetic chemical activation regime at a low temperature, while preventing vitrification of imputies found in the gold-loaded fine carbon.
摘要:
There are provided processes for purifying aluminum ions. Such processes comprise precipitating the aluminum ions under the form of AI(OH) 3 at a first pH range; converting AI(OH) 3 into AICI 3 by reacting AI(OH) 3 with HCI and precipitating said AICI 3 ; and heating the AICI 3 under conditions effective for converting AICI 3 into AI 2 O 3 and optionally recovering gaseous HCI so-produced. The processes can also comprise converting alumina into aluminum.
摘要翻译:提供了纯化铝离子的方法。 这种方法包括在第一pH范围内以Al(OH)3的形式沉淀铝离子; 通过使AI(OH)3与HCl反应并沉淀所述AICI3,将Al(OH)3转化成AICI3; 并在有效将AICI3转化为Al 2 O 3的条件下加热AICI3,并任选地回收如此生产的气态HCl。 该方法还可以包括将氧化铝转化成铝。