SU Yuanbo, LI Qingbiao, WANG Yuanpeng, et al. Silver recovery and cyanide removal from silver-plating wastewater using pulse-electrolysis[J]. CIESC Journal, 2009, (9): 2308-2313.
SU Yuanbo, LI Qingbiao, WANG Yuanpeng, et al. Silver recovery and cyanide removal from silver-plating wastewater using pulse-electrolysis[J]. CIESC Journal, 2009, (9): 2308-2313.DOI:
The objective of the present study was to recover silver and remove cyanide from silver-plating wastewater using the novel pulse-electrolysis technique.The efficiency of silver recovery and cyanide removal
as well as power consumption was discussed in terms of pulse voltage
pulse duty factor
and pulse frequency.The optimum condition for silver recovery (99%) and cyanide removal (86%) was as follows: electrolysis voltage of 2.0 V
pulse duty factor of 50%
pulse frequency of 1200 Hz and electrolysis time of 2.0 h.In addition
compared with the conventional direct current electrolysis
the pulse-electrolysis technique showed such advantages of lower polarization of electrodes
lower over-voltage
and lower tank voltage.Thus
the presented method has a potential application for electroplating wastewater treatment.