Adsorption (Ch 12) - mass transfer to an interface

Adsorption (Ch 12) - mass transfer to an interface (Absorption - mass transfer to another phase)• Gas or liquid adsorption (molecular) onto solid surface – Porous solids provide high surface area per weight (porous nanoparticles are ideal) • Gas applications (adsorption a function of P & T, gases condense in pores)

US3920403A - Method of desorbing gold from activated ...

Gold in the form of its cyanide complex is desorbed from activated carbon by contacting the carbon with a stripping liquid at temperatures above that 130*C but below the decomposition temperature of the gold cyanide complex. The stripping liquid may comprise water, dilute caustic or dilute caustic cyanide.

An electrochemical sensor for voltammetric detection of ...

A highly sensitive and novel electrochemical sensor for ciprofloxacin (CIP) has been developed using gold nanoparticles deposited with waste coffee ground activated carbon on glassy carbon electrode (AuNPs/AC/GCE) and combined with supramolecular solvent (SUPRAS). The fabricated AuNPs/AC/GCE displayed good electrocatalytic activity for AuNPs. The addition of …

(PDF) Dynamic simulation of the carbon-in-pulp and carbon ...

Schematic diagram of a carbon-in-pulp or carbon-in-leach plant with three tanks, showing the interstate screens (IS), the screen at the exit of the first tank (S), and the carbon transfer pumps (P).

The absorption of gold cyanide onto activated carbon. I ...

Fig. 2-Schematic diagram of the model change in gold concentration in each phase:-d[AuJs = ksAMc ([Au]s - [Au]:) dt Ms d[Au]c - k A ([A ]s [A ] ) ~- c uc- Uc, where A is the superficial area per unit volume of carbon, M c is the mass of carbon, and Ms the mass of solution. Equa ting of the rates of transfer for a closed system and

VF-Broschüre 2016 US - Volkmann USA

conditions (closed systems). WIP (Wetting in place) and CIP (Cleaning in place) are examples for further stages of design. Performance range The only criteria that limits the application is the available pressure difference of 1 bar max. (i.e. the difference between the prevailing air pressure and 0 bar absolute) and – from the point of view of

Activated Carbon Filter (ACF) - Pressure Carbon Filter ...

Activated carbon which is used as medium to remove contaminants is natural material derived from coconut shell, lignite, bituminous coal etc. further, activated by chemical or steam under absence of oxygen with high temperature around 1000°C. Specific contaminants can be removed by employing blends of various carbons.

barrick gold cip plant process flow chart

carbon in leach process flow diagram - BINQ Mining. · The process design of gold leaching and carbon-in -pulp circuits. The CIP process A block- flow diagram of a typical CIP plant for . The carbon-in-leach (CIL) process, illustrated in Figure 3 is a variation of the CIP process. » More detailed.


Activated carbon Ore To elution New activated carbon To tillings disposal Pulp from the leaching circuit P IS S Activated c arbon flow Pulp flow Figure 1: Schematic diagram of a carbon-in-pulp or carbon-in-leach plant with three tanks, showing the interstate screens (IS), the screen at the exit of the first tank (S), and the carbon transfer ...

Carbon Screens In Cyanide Agitator Tanks Drawings

the activated carbon is moved from one tank to another in countercurrent with the ore pulp until the recovery ... gold extraction after leaching by cyanide in aerated alkaline ... assume perfect mixing in the reactors with no ... interstate screens (IS), the screen at the exit of the first tank (S), and the carbon transfer pumps (P).

Modelling of the AARL elution process - ScienceDirect

The model was modified to be film transfer dependent and this modification was found to represent the experimental data very well. Keywords Adsorption; elution; activated carbon; eluant; column; modelling. ~TRODUCTION Elution is one of the principal unit processes in the carbon-in-pulp (CIP) process for the recovery of gold.


Carbon-in-Pulp (CIP) and Carbon-in-Leach (CIL) processes have surface areas of about 1000 m²/g i.e. one gram of activated carbon (the amount of which will occupy the same space as the end of a person's thumb) has the same surface area as two football fields.

Activated Carbon: Fundamentals and New Applications

activated carbon properties and adsorption performance. In addition, the article provides an overview of two emerging applications for activated carbon sorbents — biogas purifi-cation and sediment remediation. Activated carbon basics Activated carbon is a highly porous, high-surface-area adsorptive material with a largely amorphous structure.

PDF (PC) -

Using the NRTL equation to represent the excess Gibbs free energy, a two-parameter surface. tension equation is derived. The feasibility of the new equation has been tested in terms. of 124 binary and 16 multicomponent systems (13-ternary and 3-quaternary) with absolute. relative deviations of 0.59% and 1.55% respectively.

Adsorption with Granular Activated Carbon (GAC)

Size of Activated Carbon Particles Used in Fixed-Bed Adsorption • Typically carbon particle sizes between 0.4 and 2.5 mm are used in fixed bed adsorption applications • This size range results from a practical compromise between limiting the pressure drops on one hand and providing adequate surface area and promote mass transfer for


activated carbon (preg-robbing). CIP is a more efficient process for slower-leaching gold ores, and has certain other advantages over CIL, such as smaller carbon elution and regeneration circuits. SGS has developed a carbon-in-pulp (CIP) / carbon-in-leach (CIL) modeling package to estimate the performance of

Clean-in-place: 4 Chemicals Commonly Used

Typically used as the main detergent in most CIP wash cycles. Softens fats, making them easier to remove. Non-foaming formulation can help reduce pump cavitation and increase efficiency. 2. Acid. Nitric acid is the most commonly used wash for scale removal and pH stabilization after a …

Gold CIL & CIP Gold Leaching Process Explained CCD

Carbon-in leach (CIL) is a simultaneous leach and absorption process. The simultaneous leach and absorption phases of the CIL process were developed for processing gold ores that contain preg-robbing materials such as natural absorptive carbon. These reduce the gold yield by attracting gold meant for the activated carbon.

Granular Activated Carbon For Water & Wastewater Treatment

Granular activated carbon is a particularly good adsorbent medium due to its high surface area to volume ratio. One gram of a typical commercial activated carbon will have a surface area equivalent to 1,000 square meters. This high surface area permits the …

Process and Instrument Diagrams - SAWater

TS 112 - Process and Instrumentation Diagrams (P&ID) SA Water - Technical Standard Revision 2.0 - 16 December 2015 Page 3 of 27 For Official Use Only Uncontrolled When Printed Or Downloaded Document Controls Revision History Revision Date Author Comments 1.0 14 August 2015 M Stephens 2.0 16 December 2015 M Stephens


The urea, creatinine, and uric acid adsorbed onto the spherical activated carbon decomposed on heat treatment at 500℃, and the adsorption capacity of the spherical activated carbon was regenerated. Our study successfully demonstrated that the spherical activated carbon can be recycled in the waste dialysate treatment process.

Activated Carbon In Absorption Gold Extraction | Haycarb PLC

Today's gold mining operations optimize efficiency and output through the use of superior Haycarb gold recovery carbon technology. Our high density carbons with particle to particle consistency in activity and shape is an ideal solution for applications in CIL (carbon-in-leach), CIP (Carbon-in-pulp) and CIC (carbon-in-column) processes.


The fresh activated carbon used in CIP and CIL processes is normally -6 +18 mesh or -3.3 +1.0 mm in size. The top size is limited due to the coarser carbon having a lower adsorption rate,


The SGS CIP/CIL model allows existing mines to lower operating costs by changing their design targets and analyzing the effect of these changes without actually making the changes. The processes in which gold cyanide is adsorbed on activated carbon are very robust mechnically and very efficient metallurgically. CIP and CIL circuits are

Water Treatment Facility

thermometer, CIP inlet/outlet quick connections, isolation valves, CIP outlet cartridge filter (25-micron), and provide quick connected transfer hoses for the system demands. The RO machine shall be provided with equipped (pre-piped) to perform a periodic cleaning of the …

Looking Closer at CO2 Recovery at Your Brewery - First Key ...

CO 2 Deodorizer and Drier. The high pressure CO 2 is passed through a twin tower activated carbon purifier/deodorizer and Dryer to ensure that the CO 2 is suitably purified for food-grade usage and dried prior to condensing. Regeneration is accomplished in the off-line tower using hot air or purge gas. CO 2 Condenser.


Activated carbon is widely used for gold recovery from cyanide leach liquors via carbon-in-leach (CIL) or carbon-in-pulp (CIP) technology. From all the base metals cyanide complexes typically present together with gold in the leach liquor, only copper, and to a lesser extent nickel, are loaded onto activated carbon(6).

How to use CIP in RO Plant? - Hongtek Filtration

The following CIP steps are for your reference: 1. Water Cleaning. Rinse RO membrane modules and system pipes with water at a temperature of 60-80℃ to remove dirt and other residual substances on the surface. The water used for washing can be RO produced water, softened water or filtered water that meets RO inlet water standards.


precipitation procedure by the use of activated carbon via the carbon-in-pulp(ClP) process to recover aurocyanide from solution after cyanidation. This ClP process was selected as focus point ofthis study. The difficulty in CIP modeling and plant design stems from the fact that gold adsorption onto activated carbon follows a dual kinetic rate.

Small Scale C,I,P | Small Scale Mining

Small Scale Carbon in Pulp extraction plants 20/40 and 50/60 tons per day Units Preamble. The concept of the small-scale agitated leach unit was to design and build an agitated leach system for the small-scale mining industry, with a capacity equivalent to most small operations of around 20 to 40 ton per day.…

Ratiometric fluorescence, solution-phase and filter-paper ...

Herein, we report a novel and facile strategy for the ratiometric fluorescence (FL), solution-phase and filter-paper visual detection of ciprofloxacin (CIP) based on dual-emitting carbon dot/silicon dot (CD/SiD) conjugates. Red-emissive CDs with surface amino-modification were combined with surface carboxyl-

The process design of gold leaching and carbon-in-pulp ...

The CIP process A block-flow diagram of a typical CIP plant for ... readily adsorbed onto the activated carbon. By the time the ... Transfer is normally accomplished by pumping pulp and the associated carbon in a countercurrent direction. Due to the abrasive

Carbon Adsorption Process - 911 Metallurgist

1.1 The carbon-in-pulp(CIP) process 2 1.1.1 Loading ofgold onto carbon 2 1.1.2 Elutionorstripping ofgold onto carbon 3 1.1.3 Reactivation ofspent carbon.J~ 1.1.4 Electrowinning: metallic gold production 3 1.2 Gold Cyanide adsorption onto activated carbon 4 1.2.1 Activated carbon 4 Background 4 Structure 5 Manufacture 6

Recent progress in the adsorption heat pump technology

This paper provides a review on the area covering working fluids, new adsorption heat pump technologies and commercial products, and methods to enhance heat and mass transfer. Challenges and recommendations for future research and development are also given. Key words: adsorption, heat pump, enhancement of heat and mass transfer, adsorbent


the film mass transfer coefficient from kinetic ... for the activated carbon and residue for this work; ... Figure 1. diagram of a typical CIP circuit 6 Figure 2.1 Diagram of radial flow pattern 19 F"k~'ure2.2,t Diagram of axial flow pattern c:,{r-19 Figure 3.1 a.rfilm diffusion model: