Recently, members of the Acidophile Research Team at Bangor University carried out some bioleaching experiments which aimed to leach cobalt from the Captain sulfide ore (from New Brunswick, Canada). Sarah Smith, a geomicrobiologist at Bangor University and one of the collaborators in the COG3 project reports.
The aim was to compare the bioleaching rates of metals (primarily cobalt) from the ore at two different temperatures. To do this, two different mixed cultures were grown up (one containing bacteria that are happy at about 30°C, and another with bugs that prefer slightly higher temperatures). The cultures were then added to the bioreactors, along with the ore, and the bugs were left to work their magic! Continue reading “Bioleaching cobalt from sulphide ores | COG3 Consortium”
In November, Laura Newsome, a Research Associate, and Sul Mulroy, a PhD student at the University of Manchester Geomicrobiology group, travelled to California for beamtime at the Advanced Light Source synchrotron at the Lawrence Berkeley National Laboratory.
Laura and Sul travelled to analyse samples generated from their work on the COG3 project. Sul reports from the visit.
On Friday 30 September, scientists from across the Museum gathered to take part in Science Uncovered 2016, part of European Researchers’ Night.
The theme for this year’s event was ‘Hidden Worlds’, which gave us the perfect opportunity to share the work we have been doing as part of the CoG3 project with members of the public. COG3 project member Rachel Norman reports from the event.
Dr Paul F. Schofield is leading the part of the CoG3 project that focuses on describing and characterising new ore types, with an aim of developing new ways of extracting cobalt (Co). He reports back on a visit to Diamond Light Source.
In early September the Museum CoG3 team met with Prof Fred Mosselmans, a fellow member of the CoG3 consortium from Diamond Light Source. The team hoped to use Diamond’s facilities to study how cobalt is incorporated into the minerals of the Nkamouna cobalt-nickel laterite deposit in Cameroon.
The Diamond Light Source facility provides very intense, high-brightness beams of X-rays that are focused to produce powerful microscopes. Not only do these microscopes allow us to image the distribution of cobalt in natural materials with nanometre scale resolution, but they also enable us to measure how the cobalt atoms are actually bound into the atomic structure of their hosting minerals.
The Central African copper belt is one of the world’s most important copper producing districts, with dozens of deposits spanning a 400km length through the Democratic Republic of Congo and northern Zambia. Of these copper deposits, a select few contain significant quantities of cobalt, which is produced as a by-product of the ore refining process.
In June 2016 a field trip was undertaken to Zambia in order to examine cobalt-rich ore from the copper belt. Dr Alex Webber, Research Fellow at the National Oceanography Centre at the University of Southampton and member of the COG3 Consortium reports from the field trip.
CoG3 project member and University of Manchester PhD student Sulaiman Mulroy reports back on a recent fieldwork trip to Cameroon in West Africa.
In June 2016 I travelled to Cameroon to collect samples from the Nkamouna laterite, one of a number of lateritic ore deposits formed on top of lenticular serpentinite rocks, which cover around 240km2 in the East of Cameroon.
In total the region hosts seven lateritic ore bodies, covering ~1250km2, though only two have been subjected to rigorous exploration: Nkamouna has proven and probable reserves of 54Mt at grades of 0.25% Co and 1.7% Ni, and further north, at Mada, 150Mt of inferred resources of similar grade are believed to be hosted in the laterite.
The overall purpose of our Science Advisory Board is to assess and advise upon the strategic direction of the team’s project, CoG3: Geology, Geochemistry and Geomicrobiology of Cobalt. It also ensures that all components of the project stay focused on their objectives and remain sufficiently integrated so that the entire project can deliver the desired impact.
In April 2016 the CoG3 team travelled to Brazil to carry out fieldwork at the Piauí deposit. Researcher Dr Paul Schofield describes their trip:
Cobalt is a technology-enabling metal with numerous applications that are particularly essential to the ‘green agenda’. Despite cobalt being such a critical material, there is a very high risk associated with its supply.
Researcher Dr Agnieszka Dybowska describes a recent visit to Diamond Light Source, the UK’s national synchrotron science facility, during which the CoG3 team completed their first detailed spectroscopic analysis of laterite samples.
On Thursday 28 April we headed to Diamond Light Source in Oxfordshire, hoping to carry out atomic scale analysis of a sample from the Shevchenko laterite deposit in Kazakhstan – one of the samples we’re investigating as a potential new source of cobalt.
For some of us this was the first visit to a synchrotron facility, and definitely a great experience!
Ed Thomas, PhD student on the CoG3 project, explains the importance of cobalt to a group of school children in Manchester.
As a Widening Participation Fellow I am often involved with outreach events encouraging school children in to science, technology, engineering and maths subjects. My workshops are usually based on an aspect of Earth Sciences that the children have come across before; the rock cycle, dinosaurs, volcanoes…
However, the most engaging part of science is not what we already know, but the unsolved problems we face as a society. It is one of these unanswered questions I posed to year 9 children from four schools in Greater Manchester.