only of presentations and discussions, but also of great The selection begins with the plenary paper presented
83 (2food and entertainment.The Symposium featured the following topics:
Fundamentals of Bioleaching Applied and Industrial Biohydrometallurgy Novel Applications
by Dr. Megan Clark, Vice President Technology, BHPBilliton, who outlined the way biohydrometallurgy hasfound, and continues to find, increasing application in theminerals industry, as well as some of the key challenges.This is followed by a selection of papers on fundamentalhydrometallurgy and biohydrometallurgy. Of key interestoffered its unique vista of Table Mountain and lusciousgardens as a stunning backdrop to four intense days, not
sary. Therefore, the numbered referencing style used inthe Proceedings has been retained in this Special Issue.Ed
16th International BiohydromCape Town, 252
The International Biohydrometallurgy Symposiumhas long been recognised as the key forum at whichresearch scientists involved in both the biology andhydrometallurgy of mineral bioprocesses exchangeresearch findings and ideas with each other and withindustrial practitioners. These practitioners, in return,share experiences and report key challenges of biohy-drometallurgical practice requiring further understand-ing and resolution. In this sense IBS welcomes a diverserange of academic delegates across an interdisciplinaryfield including biology, chemistry, physics and engi-neering, as well as industrial representatives.
The 16th International Biohydrometallurgy Sympo-sium, IBS2005, in South Africa placed the interactionbetween academic researchers, industrial researchersand practitioners as its primary objective. In so doing wehave returned to the focus of the IBS series in the mid1990s. IBS95 in Chile and IBS97 in Australia featuredindustrial application in a prominent role, both, likeSouth Africa, being countries where the active practiceof mineral extraction is of key economic importance.
IBS2005 welcomed 160 delegates from 34 countries,evenly spread across all 5 continents. The beautifulVineyard Hotel in the heart of Claremont, Cape Town,
Hydrometallurgy Bioremediation and Biosorption Microbiology and Microbial Ecology Genetics and Molecular Biology
0304-386X/$ - see front matter 2006 Elsevier B.V. All rights reserved.doi:10.1016/j.hydromet.2006.03.031al
llurgy Symposium, IBS2005,September 2005
These were accompanied by a number of plenary andkeynote lectures reviewing current knowledge in termsof fundamental understanding and practical application.In total, 93 papers were presented either as lectures, fulloral presentations or short oral presentations withaccompanying poster. In addition, 15 poster-onlypresentations were made.
The Conference Proceedings, which were issued onCD and in print at the Symposium, contain most of thefull papers presented. Each paper was reviewed by twoindependent international experts from academia andindustry, thus ensuring that all papers correspond toaccepted quality standards. Copies of the full Proceed-ings of the 16th International BiohydrometallurgySymposium are available in print (ISBN 1-920051-17-1) or on CD (ISBN 1-920051-20-1) through theConference Secretariat Contact: Meg Winter; Dep.Chemical Engineering; Private Bag, Rondebosch 7701;South Africa; Tel: +27 (0)21 650 2752; Fax: +27 (0)21650 5501; email: firstname.lastname@example.org.
The present Special Issue of Hydrometallurgy offers aselection of 34 papers from all topic areas. These havebeen taken straight from theConference Proceedingswithonly minor modifications by the authors, where neces-
006) 12www.elsevier.com/locate/hydromethere is the bioleaching of chalcopyrite, which continues todraw considerable attention in the research community.Insights into the interactions of arsenic, a review of the
kinetics of bioleaching, and modelling of bio-stoichiom-etry are covered as well. Papers on Applied and IndustrialBiohydrometallurgy cover heap bioleaching, tank bio-leaching, mixing, wastewater treatment, as well as processmineralogy and biology. An overview of the BioMinEproject is also featured. Three papers from the session onNovel Applications feature aspects of biohydrometallurgywhich depart from the conventional bio-leaching/bio-remediation route, such as biological production of nano-particles, bio-flotation and biologically supported ion-exchange. Selected papers on Bioremediation cover thepotential of abandoned mine sites and tailings dams togenerate leachate through biohydrometallurgical interac-tions, as well as routes to treating such leachates throughbiohydrometallurgical means, especially involving sul-phate-reducing bacteria.
Although perhaps outside the usual scope ofHydrometallurgy, a few papers presenting fundamentalstudies centred on microbiological topics in the contextof bioleaching are included in the present selection. IBShas always been at the forefront of bridging the gapbetween the physico-chemical processes of bioleachingand their interactions with living organisms, exploring
matic analysis of carbon, ferrous iron and sulphurenergetic metabolisms in a typical bio-oxidising micro-bial strain.
The conference organisers wish to acknowledge thegenerous sponsorship of the Symposium by BHPBilliton, Rio Tinto, Merck SA, Goldfields Ltd, BatemanEngineering BV, BioMinE, AMIRA International andthe Department of Science and Technology (DST) ofSouth Africa. Thanks are also due to the NationalOrganising Committee and especially the conferenceSecretariat (Meg Winter, Catherine Mitchell and HeidiTate).
Finally, we would like to draw attention to the 17thBiohydrometallurgy Symposium to be held in Frankfurt/Main, Germany, 25 September 2007. For more informa-tion contact: DECHEMA e.V., Attn: Heike Geiling; P.O.B.15 01 04; 60061 Frankfurt/Main; Germany; Tel: +49 (0)697564 280; Fax: +49 (0)69 7564 176; http://events.dechema.de/biohydrometallurgy-site-tagungen.html.
2 Editorialthe sciences of both. The selected papers elaborate on theiron cycle in biohydrometallurgy, identification oforganisms in bioleach operations, microbemineralinteractions, and a comprehensive genetic and bioinfor-(Guest Editors)Jochen Petersen
Susan T.L. HarrisonUniversity of Cape Town,
Bioprocess Engineering Research Unit,Department of Chemical Engineering,
Cape Town, South AfricaE-mail address:
16th International Biohydrometallurgy Symposium, IBS2005, Cape Town, 2529 September 2005