Spent Potlining – A Hazardous Waste Made Safe

Pong, T.K.; Adrien, R.J.; Besida, J.; O’Donnell, T. A.; Wood, Donna J.

doi:10.1205/095758200530646

Cited by 63 publications

(21 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The spent potlinings generated during aluminium manufacture are also a significant source of cyanide contamination. Much of this material is awaiting disposal via a environmentally acceptable route (Pong et al 2000).…”

Section: Anthropogenic Sources Of Cyanidementioning

confidence: 99%

The current and future applications of microorganism in the bioremediation of cyanide contamination

Baxter

Cummings

2006

Antonie Van Leeuwenhoek

113

View full text Add to dashboard Cite

Inorganic cyanide and nitrile compounds are distributed widely in the environment, chiefly as a result of anthropogenic activity but also through cyanide synthesis by a range of organisms including higher plants, fungi and bacteria. The major source of cyanide in soil and water is through the discharge of effluents containing a variety of inorganic cyanide and nitriles. Here the fate of cyanide compounds in soil and water is reviewed, identifying those factors that affect their persistence and which determine whether they are amenable to biological degradation. The exploitation of cyanides by a variety of taxa, as a mechanism to avoid predation or to inhibit competitors has led to the evolution in many organisms of enzymes that catalyse degradation of a range of cyanide compounds. Microorganisms expressing pathways involved in cyanide degradation are briefly reviewed and the current applications of bacteria and fungi in the biodegradation of cyanide contamination in the field are discussed. Finally, recent advances that offer an insight into the potential of microbial systems for the bioremediation of cyanide compounds under a range of environmental conditions are identified, and the future potential of these technologies for the treatment of cyanide pollution is discussed.

show abstract

Section: Anthropogenic Sources Of Cyanidementioning

confidence: 99%

The current and future applications of microorganism in the bioremediation of cyanide contamination

Baxter

Cummings

2006

Antonie Van Leeuwenhoek

113

View full text Add to dashboard Cite

show abstract

“…Equation (1) represents the conventional AlF 3 production process while equation (2) represents the proposed AHF integration process. AlF 3 is an essential component of the electrolytic bath and is added constantly to the aluminium smelting process to improve current efficiency [3].…”

Section: Introductionmentioning

confidence: 99%

Metastable zone width and nucleation threshold of aluminium hydroxyfluoride hydrate

Ntuk

Steel

2016

Crystal Research and Technology

View full text Add to dashboard Cite

This paper considers the metastable zone width (MSZW) of aluminium hydroxyfluoride hydrate (AHF, AlF 2 OH.H 2 O) crystallizing solution, with a view to identifying suitable conditions for crystal growth. Speciation calculations combined with experimental validations have been used to estimate the degree of saturation at varying pHs leading to the identification of the metastable zone width (MSZW). From the results obtained, the solutions are saturated at pH 3.0 ± 0.3 and remain metastable until the nucleation threshold is reached at pH 5.0 ± 0.3. A narrowing of the MSZW at elevated temperatures has been observed and is attributed to the decrease in AHF solubility with increasing temperatures. This phenomenon was applied to obtain a tripling of the crystal particles in 30 minutes. The pH profile of the crystallizing solution is similar to that of acid/base titration curves and is found to be a quick and accurate method of estimating the MSZW. Using similar terminologies, the equivalent point corresponds to solution saturation while the midpoint corresponds to the nucleation threshold. These results are applicable in the recovery of fluoride values of spent pot lining.

show abstract

“…Eventually, the cell fails (after 3-8 years) and the cathode carbon 'potlining' is removed and the shell is re-lined [2]. Once the carbonaceous material is removed the resulting waste material is called SPL (spent pot lining).…”

Section: Introductionmentioning

confidence: 99%

Kinetics of fluoride removal from spent pot liner leachate (SPLL) contaminated groundwater

Sleap

Turner

Sloan

2015

Journal of Environmental Chemical Engineering

View full text Add to dashboard Cite

Spent Potlining – A Hazardous Waste Made Safe

Cited by 63 publications

References 2 publications

The current and future applications of microorganism in the bioremediation of cyanide contamination

The current and future applications of microorganism in the bioremediation of cyanide contamination

Metastable zone width and nucleation threshold of aluminium hydroxyfluoride hydrate

Kinetics of fluoride removal from spent pot liner leachate (SPLL) contaminated groundwater

Contact Info

Product

Resources

About