Table 5 Mercury content in solid and liquid samples and important parameters of the coal-fired power plant investigated during campaign D

Stack gas (µg Nm⁻³)

Hg^p

0.003

0.005

0.003

Hg²⁺

0.032

0.009

0.002

Hg⁰

0.062

0.127

0.006

Hg^T

0.097

0.141

0.011

Coal (mg Hg kg⁻¹)

0.033

0.030

0.021

Bottom ash (mg Hg kg⁻¹)

 < 0.005^a

 < 0.005^a

 < 0.005^a

Fly ash (mg Hg kg⁻¹)

0.131

0.153

0.362

Inlet seawater (µg Hg L⁻¹)

0.016

0.015

0.010

Discharged seawater (µg Hg L⁻¹)

0.783

0.201

0.020

Particulate matter (mg Nm⁻³)

0.567

0.384

0.114

Feeding coal

Chloride content (mg kg⁻¹)

150

158

668

Heating value (MJ kg⁻¹)

29.0

27.1

26.7

Combustion rate (t h⁻¹)

257

271

298

Ash content (%)

12.9

10.8

9.7

Fly ash generation (t h⁻¹)

28.7

34.2

21.8