BIOLOGICAL REMOVAL OF HYDROGEN SULPHIDE FROM LANDFILL SITE BIOGAS - PowerPoint PPT Presentation

BIOLOGICAL REMOVAL OF HYDROGEN SULPHIDE FROM LANDFILL SITE BIOGAS Rania Ibrahim 1 , Shahram Navaee-Ardeh 1 , Hubert Cabana 1 1 Department of Civil Engineering, University of Sherbrooke, 2500 Boulevard de l’Université, Sherbrooke, Québec, J1K 2R1, Canada

Outlines ■Introduction ■Study objectives ■Materials and Methods ■Results ■Conclusions 1 7 TH INTERNATIONAL CONFERENCE ON SUSTAINABLE SOLID WASTE MANAGEMENT

Introduction 2 7 TH INTERNATIONAL CONFERENCE ON SUSTAINABLE SOLID WASTE MANAGEMENT

Introduction Composition of biogas in landfjll site CH4 ; 53,6000 CO2 ; 43,0800 H2S ; 0,0014 O2 ; 0,4100 CH4 CO2 O2 H2S 3 7 TH INTERNATIONAL CONFERENCE ON SUSTAINABLE SOLID WASTE MANAGEMENT

Introduction Background and problem justifjcation Bio- hydrogenerati methanol Biogas: on Anaero CH 4 bic Reforming digesti CO 2 Bio- on H 2 S hydrogen 4 7 TH INTERNATIONAL CONFERENCE ON SUSTAINABLE SOLID WASTE MANAGEMENT

Introduction Background and problem justifjcation 5 7 TH INTERNATIONAL CONFERENCE ON SUSTAINABLE SOLID WASTE MANAGEMENT

Study objectives ■Determine the performance of the lab Scale biofjlter for removing the H 2 S contained in the synthetic biogas. ■Remove the hydrogen sulphide from real biogas by biological oxidation process. 6 7 TH INTERNATIONAL CONFERENCE ON SUSTAINABLE SOLID WASTE MANAGEMENT

Materials and Methods Biological Hydrogen Sulphide Removal T echniques Gabriel and Dehusses 2003) 7 7 TH INTERNATIONAL CONFERENCE ON SUSTAINABLE SOLID WASTE MANAGEMENT

Materials and Methods Laboratory scale bioreactor Operation conditions Volume (L) 1 Flow rate 0.5 - 1 (L/min) EBRT (min) 1 - 2 H 2 S (ppmv) 735 – 2000 CO 2 (%) 20 Air (Humide) Balance 8 7 TH INTERNATIONAL CONFERENCE ON SUSTAINABLE SOLID WASTE MANAGEMENT

Materials and Methods Pilot scale bioreactor Operation conditions BTF1 BTF2 Volume (L) 110 25 Flow rate 2.3 1.2 (L/min) HRT (min) 3.9 0.9 H 2 S 900-1220 100 (ppmv) pH 2 7 Air 4% -- 9 7 TH INTERNATIONAL CONFERENCE ON SUSTAINABLE SOLID WASTE MANAGEMENT

Results Biodegradation test of H 2 S in the laboratory 10 7 TH INTERNATIONAL CONFERENCE ON SUSTAINABLE SOLID WASTE MANAGEMENT

Results The performance of the pilot scale biofjltration treatment system on landfjll site 1 7 TH INTERNATIONAL CONFERENCE ON SUSTAINABLE SOLID WASTE 1 MANAGEMENT

Conclusions ■The biofjltration system, containing stainless-steel pall rings as a fjlter material, removed H 2 S with effjciencies ranged between 94% and 97 % for inlet H 2 S concentrations at the range of 900 to 1500 ppmv. ■Approximately 50 ppmv of H 2 S gas was detected in the outlet gas. ■It was observed that the high concentration of chrome, iron and nickel were leached to the produced liquid. These contaminants came from the packing media used (consisting essentially of stainless steel) and not from the biogas treatment. 1 7 TH INTERNATIONAL CONFERENCE ON SUSTAINABLE SOLID WASTE 2 MANAGEMENT

Acknowledgements ■Prof. Hubert Cabana ■Dr. Shahram Navaee-Ardeh ■Natural Sciences and Engineering Research Council of Canada (NSERC) ■Olivier Savary 1 7 TH INTERNATIONAL CONFERENCE ON SUSTAINABLE SOLID WASTE 3 MANAGEMENT

Thank you! Rania.Ibrahim@usherbro oke.ca 1 7 TH INTERNATIONAL CONFERENCE ON SUSTAINABLE SOLID WASTE 4 MANAGEMENT