Reducing SOx, NOx, and Hg from Flue Gas
To reduce SOx, NOx, and Hg by biotreatment of flue gas by using Microalgae which is a promising
bioremediation and biodegradation agent used as feedstock for biofuel production and other bio-based
Hindustan Zinc Limited operates the Captive Power Plant (CPP) for its own energy consumption which
produces 500 MW of power required for running their smelters. The CPP's because of fossil fuel
burning activities generate a huge amount of flue gas (exhaust gas) which comprises of harmful gases
such as SOx, NOx, and Hg. The flue gas has negative effects on the environment such as atmospheric
pollution, acid rain, and a series of health problems because of this, the central pollution board
under their new norms has capped the NOx emissions at 900 mg/Nm3, SOx emissions at 3000 mg/Nm3, and
Hg emissions at 0.03 mg/Nm3.
Profile of the End-User
- Compliance Team
- Existing System
Currently, Flue-gas desulfurization (FGD) is widely used for Flue gas treatment which contributes to environmental pollution and also leads to excessing landfilling.
Functional Requirements of the End-User
- To reduce SOx, NOx, and Hg present in the Flue gas before releasing it into the
Functional & Operational Capabilities
- To limit emissions at SOx - 3000 mg/Nm3, NOx - 900 mg/Nm3, and Hg 0.03 mg/Nm3.
- Easily retrofittable into existing equipment and should have less/easy maintenance.
Expected Tangible Benefits and Measurable Gains
- Microalgal biomass formed to be used as suitable feedstock to produce biofuels and other bio-based chemicals.
Performance Metrics or Outcomes
- Reduce any Capital Expenditure with no upfront investment cost
- Enhance Safety with Ease of Operation