2015 Shiva Salek PhD Presenation

Shiva&Salek&

1"

3"

4"

5"

Silicate&minerals&e.g.&acidic&condi4ons&&

Limestone&e.g.&alkaline&condi4ons&

+ CO2

6"

e.g.&acidic&condi4ons&&

e.g.&alkaline&condi4ons&

Using&biotechnological&processes&

increasing&silicate&weathering&and&limestone&forma4on&rates&

7"

8"

CO2&storage&efficiencies&of&two?stage&biological&processes&

Two-stage anaerobic digestion system

9"

Limestone

Acidogenic Methanogenic

Mine

Silicate Mineral

Carbon containing Wastewater

Re-use in Construction/

Agriculture

Improved Biogas

Synthesis Natural Gas

Carbonate Mineral

Two-stage Anaerobic digestion

10"

Limestone Biocement

Acidogenic Methanogenic

Mine

Silicate Mineral

Re-use in Construction/

Agriculture

Improved Biogas

Synthesis Natural Gas

Carbonate Mineral

Two-stage Anaerobic digestion

11"

Acidogenic Methanogenic

Two-stage Anaerobic digestion

12"

13"

CH4

CO2

Component& SiO2& CaO& Fe2O3& P2O5& MgO& Al2O3& Na2O& Cl& MnO&Organic&reactant

TX?100&surfactant

(wt.%)"AD&Residue&

Chemical&grout

51.8 46.1 0.73 0.46 0.26 0.21 0.12 0.1 0.1 0.521 0

50270 0230 123 0 123 325 20230 0 022 426 0.1

Limestone Biocement

14"

Prac7cal"applica7on"of"CaCO3"in"biotechnological"processes"

15"