“A collective approach towardsgreen foundries in South Africa”  Moving towards green foundries in South Africa            ...
1. Setting the contextFoundry waste sand       NOT WASTE         NOT USED            RATHER   Spent foundry sand
Colloquium 2009:  Major joint problem raised by companies was the irregular  manner in which foundry spent sand is regulat...
Regulatory context Waste management in South Africa is regulated under           the National Environmental          Manag...
Regulatory context - continuedCurrent bottleneckis that foundry sand is classified as hazardous waste according           ...
South Africa is applying the leaching test: Toxicity  Characteristic Leaching Procedure (TCLP), however the  problem is th...
Cost to foundriesIn the United Kingdom foundry waste sand,qualifies under the lower rate tax, which is £2.50=$4.10 per to...
2. Taking action February 2011; a Foundry Waste management  working group was initiated April 2011; an external consulta...
3. Way forward Give feedback to 4 foundries; on the results of their  sand Next few weeks; set up a meeting with Departm...
German Recycling of spent sands, dust and slags in Road construction Cement production Landfill liner Backfilling
Recycling of spent sands, dust and slagsRecycling of used                         Foundry   Foundry                      ...
Recycling of spent sands, dust and slagsRecycling of used sandsand quartz dust                                           ...
Recycling of spent sands, dust and slagsLandfill: road                           Landfill     Landfill     Landfill     L...
Recycling of spent sands,                          Limit value         dust and slags                                    T...
3. Summary These has been progress since 2009 Bottleneck – legislation Draw on international experience Develop a reli...
Adrie El MohamadiProject LeaderNFTN012 841 2127082 902 4083adrie.elmohamadi@nftn.co.zawww.nftn.co.za
Upcoming SlideShare
Loading in...5
×

NFTN - collective approach towards green foundries in South Africa

607

Published on

NFTN - collective approach towards green foundries in South Africa

Published in: Business, News & Politics
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total Views
607
On Slideshare
0
From Embeds
0
Number of Embeds
0
Actions
Shares
0
Downloads
19
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

NFTN - collective approach towards green foundries in South Africa

  1. 1. “A collective approach towardsgreen foundries in South Africa” Moving towards green foundries in South Africa MCTS Colloquium 2011 27 October 2011, Johannesburg Adrie El Mohamadi Project Leader
  2. 2. 1. Setting the contextFoundry waste sand NOT WASTE NOT USED RATHER Spent foundry sand
  3. 3. Colloquium 2009: Major joint problem raised by companies was the irregular manner in which foundry spent sand is regulated in SA -  Exorbitant costs to dispose of spent foundry sand  No facility to assist with process  Industry not willing to unite to deal with the problem
  4. 4. Regulatory context Waste management in South Africa is regulated under the National Environmental Management: Waste Act 2008. The Waste Act is supported by the National Waste Classification and Management Regulations, the Standard for Assessmentof Waste for Landfill Disposal, and the National Standard for the Disposal of Waste to Landfill, These are all currently in draft form.
  5. 5. Regulatory context - continuedCurrent bottleneckis that foundry sand is classified as hazardous waste according to the Minimum Requirements for the Handling, Classification and Disposal of Hazardous Waste “Minimum Requirements”
  6. 6. South Africa is applying the leaching test: Toxicity Characteristic Leaching Procedure (TCLP), however the problem is that other than the international standards SA included elements Al, Fe and Mn to the listThese macro elements would leach from inorganic materials under the acidicconditions of the TCLP test.On this basis, many materials are classified incorrectly as hazardousEven virgin garden soil was demonstrated to be hazardous in a test casesubmitted by concerned academicsThese elements are highly abundant in natural soils and are very importantsince they produce oxides.Only under extremely low pH conditions do they present a phytotoxicity issueIn the US comparisons are made between foundry sand and soils.
  7. 7. Cost to foundriesIn the United Kingdom foundry waste sand,qualifies under the lower rate tax, which is £2.50=$4.10 per tonne (FTJ, 2011)In South Africa general waste disposal is aboutR250=$34.00 per tonneProblem is not only the cost but the inconsistencyof applying this regulation
  8. 8. 2. Taking action February 2011; a Foundry Waste management working group was initiated April 2011; an external consultant was appointed to do tests on 4 green sand foundries spent sand  Chemical Analysis  Interpretation of the analysis  Documents for submission at Department of Environment  Sept 2011; received results of the above, stating that “Overall, spent foundry sand should be regarded as inert, rather than low-risk waste”
  9. 9. 3. Way forward Give feedback to 4 foundries; on the results of their sand Next few weeks; set up a meeting with Department of Environment Influence regulation; engage America and Germany in this Start working on alternative uses of spent foundry sand
  10. 10. German Recycling of spent sands, dust and slags in Road construction Cement production Landfill liner Backfilling
  11. 11. Recycling of spent sands, dust and slagsRecycling of used Foundry Foundry sand I sand IIsands and slags pH value >9 >6Road construction,(limit values in Germany) Conductivity 1,500 2,700 [microS/cm] Fluoride 9 80 [mg/l] DOC [mg/l] 30 200 Metals, e.g. 115 120 Chromium [microg/l]
  12. 12. Recycling of spent sands, dust and slagsRecycling of used sandsand quartz dust LimitCement production, value(limit values of the cement industry) Phenole 40 [mg/kg] PAH [mg/kg] 20 Metals, e.g. 400 Chromium [mg/kg] Nickel [mg/kg] 250
  13. 13. Recycling of spent sands, dust and slagsLandfill: road Landfill Landfill Landfill Landfillconstruction, Cat. 0 Cat. I Cat. II Cat. IIIlandfill liner,(limit values in Loss of ignition [%] <3 <3 <5 <10Germany) pH value 5.5-13 5.5-13 5.5-13 4-13 Fluoride <1 <5 <15 <50 [mg/l] DOC [mg/l] <50 <50 <80 <100 Metals, e.g. Chromium <0,05 <0,3 <1 <7 [mg/l] Only landfill liner: < 1* 10-10 < 1* 10-10 < 1* 10-10 < 1* 10-10 Permeability [m/s]
  14. 14. Recycling of spent sands, Limit value dust and slags TOC [mg/kg] <6Recycling of dust PAH [mg/kg] 20and used sands Metals, e.g. 600Backfilling in mines, Chromium(Limit values (not regarding salt [mg/kg]mines) in Germany) Nickel [mg/kg] 600• Naphtaline (PAK) 2 [mg/l] Metals, e.g. 50 Chromium [mg/l] Nickel [mg/l] 50
  15. 15. 3. Summary These has been progress since 2009 Bottleneck – legislation Draw on international experience Develop a reliable publicly owned testing facility Start working on alternative uses for spent foundry sand Government, Academia, Industry and Research to joint hands
  16. 16. Adrie El MohamadiProject LeaderNFTN012 841 2127082 902 4083adrie.elmohamadi@nftn.co.zawww.nftn.co.za
  1. A particular slide catching your eye?

    Clipping is a handy way to collect important slides you want to go back to later.

×