A 600 ml continuously stirred tank reactor was used to assess the performance of a zinc sulfide precipitation process using a biogenic sulfide solution (the effluent of a sulfate-reducing bioreactor) as sulfide source. In all experiments, a proportional-integral (PI) control algorithm was used to control the pH and the sulfide (S2-) concentration at the desired level in the precipitator. The pS (defined as: -log [S2-]) and pH were optimised using a chemical Na2S solution as sulfide source. A S2- concentration of 10(-15) M (i.e. pS 15) was found to be optimal for zinc sulfide precipitation, resulting in a residual zinc concentration of 0.07 mg/l from a 3 g/l Zn2+ influent, for both chemical Na2S and biogenic sulfide solutions. The mean parti...
Biological production of hydrogen sulfide (H2S) using sulfate-reducing bacteria (SRB) has important ...
Sulfide precipitation is superior to hydroxide precipitation for removal of heavy metals from wastew...
Purity and settling properties determine metal sulfide recovery from bioreactors. The influence of ...
A 600 ml continuously stirred tank reactor was used to assess the performance of a zinc sulfide prec...
A 600 ml continuously stirred tank reactor was used to assess the performance of a zinc sulfide prec...
A 600 ml continuously stirred tank reactor was used to assess the performance of a zinc sulfide prec...
A 600 ml continuously stirred tank reactor was used to assess the performance of a zinc sulfide prec...
A 600 ml continuously stirred tank reactor was used to assess the performance of a zinc sulfide prec...
Precipitation of Zn2+ with S2− was studied at room temperature in a continuously stirred tank reacto...
Precipitation of Zn2+ with S2− was studied at room temperature in a continuously stirred tank reacto...
Dissolved zinc is present in natural waters and process streams generated by the mining and metallur...
Dissolved zinc is present in natural waters and process streams generated by the mining and metallur...
This paper presents the dynamic modelling and design of a control strategy for the ZnS precipitation...
Conventional metal extraction processes leave residual metals in solution which are lost as pollutan...
Metal sulphide precipitation forms an important component of acid mine drainage remediation systems ...
Biological production of hydrogen sulfide (H2S) using sulfate-reducing bacteria (SRB) has important ...
Sulfide precipitation is superior to hydroxide precipitation for removal of heavy metals from wastew...
Purity and settling properties determine metal sulfide recovery from bioreactors. The influence of ...
A 600 ml continuously stirred tank reactor was used to assess the performance of a zinc sulfide prec...
A 600 ml continuously stirred tank reactor was used to assess the performance of a zinc sulfide prec...
A 600 ml continuously stirred tank reactor was used to assess the performance of a zinc sulfide prec...
A 600 ml continuously stirred tank reactor was used to assess the performance of a zinc sulfide prec...
A 600 ml continuously stirred tank reactor was used to assess the performance of a zinc sulfide prec...
Precipitation of Zn2+ with S2− was studied at room temperature in a continuously stirred tank reacto...
Precipitation of Zn2+ with S2− was studied at room temperature in a continuously stirred tank reacto...
Dissolved zinc is present in natural waters and process streams generated by the mining and metallur...
Dissolved zinc is present in natural waters and process streams generated by the mining and metallur...
This paper presents the dynamic modelling and design of a control strategy for the ZnS precipitation...
Conventional metal extraction processes leave residual metals in solution which are lost as pollutan...
Metal sulphide precipitation forms an important component of acid mine drainage remediation systems ...
Biological production of hydrogen sulfide (H2S) using sulfate-reducing bacteria (SRB) has important ...
Sulfide precipitation is superior to hydroxide precipitation for removal of heavy metals from wastew...
Purity and settling properties determine metal sulfide recovery from bioreactors. The influence of ...