A membrane electroflotation process for recovery of recyclable chromium(III) from tannery spent liquor effluent

Rajeswari Selvaraj; Manikandan Santhanam; Vidhya Selvamani; Sundarapandiyan Sundaramoorthy; Maruthamuthu Sundaram

doi:10.1016/j.jhazmat.2017.11.052

A membrane electroflotation process for recovery of recyclable chromium(III) from tannery spent liquor effluent

Rajeswari Selvaraj, Manikandan Santhanam, Vidhya Selvamani, Sundarapandiyan Sundaramoorthy, Maruthamuthu Sundaram

Research output: Contribution to journal › Article › peer-review

36 Scopus citations

Abstract

A two-compartment membrane electroflotation reactor has been demonstrated for recovery of recyclable chromium(III) from tannery spent liquor effluent. Dimensionally stable RuO₂/TiO₂-Ti and Ti were used as anode and cathode, respectively. The spent liquor effluent was used as catholyte and 0.01 N H₂SO₄ 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.

Original language	English
Pages (from-to)	133-139
Number of pages	7
Journal	Journal of Hazardous Materials
Volume	346
DOIs	https://doi.org/10.1016/j.jhazmat.2017.11.052
State	Published - 15 Mar 2018
Externally published	Yes

Keywords

Chromium(III)
Electroflotation
Recovery
Reuse
Tannery effluent

ASJC Scopus subject areas

Environmental Engineering
Environmental Chemistry
Waste Management and Disposal
Pollution
Health, Toxicology and Mutagenesis

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10.1016/j.jhazmat.2017.11.052

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title = "A membrane electroflotation process for recovery of recyclable chromium(III) from tannery spent liquor effluent",

abstract = "A two-compartment membrane electroflotation reactor has been demonstrated for recovery of recyclable chromium(III) from tannery spent liquor effluent. Dimensionally stable RuO2/TiO2-Ti and Ti were used as anode and cathode, respectively. The spent liquor effluent was used as catholyte and 0.01 N H2SO4 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.",

keywords = "Chromium(III), Electroflotation, Recovery, Reuse, Tannery effluent",

author = "Rajeswari Selvaraj and Manikandan Santhanam and Vidhya Selvamani and Sundarapandiyan Sundaramoorthy and Maruthamuthu Sundaram",

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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

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 RuO2/TiO2-Ti and Ti were used as anode and cathode, respectively. The spent liquor effluent was used as catholyte and 0.01 N H2SO4 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 RuO2/TiO2-Ti and Ti were used as anode and cathode, respectively. The spent liquor effluent was used as catholyte and 0.01 N H2SO4 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

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AN - SCOPUS:85038022902

SN - 0304-3894

VL - 346

SP - 133

EP - 139

JO - Journal of Hazardous Materials

JF - Journal of Hazardous Materials

ER -

A membrane electroflotation process for recovery of recyclable chromium(III) from tannery spent liquor effluent

Abstract

Keywords

ASJC Scopus subject areas

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