TY - JOUR
T1 - A membrane electroflotation process for recovery of recyclable chromium(III) from tannery spent liquor effluent
AU - Selvaraj, Rajeswari
AU - Santhanam, Manikandan
AU - Selvamani, Vidhya
AU - Sundaramoorthy, Sundarapandiyan
AU - Sundaram, Maruthamuthu
N1 - Funding Information:
Authors sincerely thank Council of Scientific and Industrial Research (CSIR), New Delhi, India for providing research fellowship (JRF, SRF). This study was financially supported by CSIR 12th Five-year plans - Zero Emission Research Initiative for Solid Leather Waste (ZERIS – CSC 0103). The authors also like to extend their thanks to CSIR-CLRI for providing a facility for carrying out reuse study of Cr(OH) 3 in the tanning process.
Publisher Copyright:
© 2017 Elsevier B.V.
PY - 2018/3/15
Y1 - 2018/3/15
N2 - A two-compartment membrane electroflotation reactor has been demonstrated for recovery of recyclable chromium(III) from tannery spent liquor effluent. Dimensionally stable RuO 2 /TiO 2 -Ti and Ti were used as anode and cathode, respectively. The spent liquor effluent was used as catholyte and 0.01 N H 2 SO 4 used as anolyte which was separated by Nafion 117 membrane. About 98% of chromium(III) was recovered and the removal efficiency correlated with the presence of organics in the effluent. The advantage of two-compartment membrane electroflotation process is capable of removing chromium(III) without oxidising it into chromium(VI) in chloride containing tannery spent liquor effluent. The mechanism of chromium(III) removal has been discussed. The recovered Cr(OH) 3 was successfully demonstrated for tanning of cowhide.
AB - A two-compartment membrane electroflotation reactor has been demonstrated for recovery of recyclable chromium(III) from tannery spent liquor effluent. Dimensionally stable RuO 2 /TiO 2 -Ti and Ti were used as anode and cathode, respectively. The spent liquor effluent was used as catholyte and 0.01 N H 2 SO 4 used as anolyte which was separated by Nafion 117 membrane. About 98% of chromium(III) was recovered and the removal efficiency correlated with the presence of organics in the effluent. The advantage of two-compartment membrane electroflotation process is capable of removing chromium(III) without oxidising it into chromium(VI) in chloride containing tannery spent liquor effluent. The mechanism of chromium(III) removal has been discussed. The recovered Cr(OH) 3 was successfully demonstrated for tanning of cowhide.
KW - Chromium(III)
KW - Electroflotation
KW - Recovery
KW - Reuse
KW - Tannery effluent
UR - http://www.scopus.com/inward/record.url?scp=85038022902&partnerID=8YFLogxK
U2 - 10.1016/j.jhazmat.2017.11.052
DO - 10.1016/j.jhazmat.2017.11.052
M3 - Article
C2 - 29253752
AN - SCOPUS:85038022902
SN - 0304-3894
VL - 346
SP - 133
EP - 139
JO - Journal of Hazardous Materials
JF - Journal of Hazardous Materials
ER -