Reusability of Iron sludge as an Iron source for Fenton-type process

DOI

10.2991/eesed-16.2017.68How to use a DOI?

Keywords

Iron sludge; Fenton; NH2OH; Hydroxyl radical; Heterogeneous catalysis

Abstract

As one of the hazardous solid wastes, iron sludge has received considerable and increasing attention for its potential damage to the environment. Thus this paper reports the reusability of iron sludge for a Fenton-type process. However, the slow transformation of Fe(III)/Fe(II) limits its repetitive and widespread application. Hence, hydroxylamine (HA), a common reducing agent, was introduced to iron-sludge/H2O2 system to accelerate the conversion of Fe(III)/Fe(II). With the addition of HA, orange G (OG) degradation was largely increased at pH 2.0-9.0, and the generation of hydroxyl-radicals was significantly promoted. It was surprised to find that the catalytic ability of iron sludge maintained constantly in the ten consecutive runs with 100% iron recovery. Thus the present study provides a promising way to reuse iron sludge for the rapid degradation of refractory organics and dispose the solid iron-based wastes.

Copyright

© 2017, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Jing Zhang
PY  - 2016/08
DA  - 2016/08
TI  - Reusability of Iron sludge as an Iron source for Fenton-type process
BT  - 2nd Annual International Conference on Energy, Environmental & Sustainable Ecosystem Development (EESED 2016)
PB  - Atlantis Press
SP  - 493
EP  - 497
SN  - 2352-5401
UR  - https://doi.org/10.2991/eesed-16.2017.68
DO  - 10.2991/eesed-16.2017.68
ID  - Zhang2016/08
ER  -