Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7475938 | Journal of Environmental Management | 2018 | 8 Pages |
Abstract
In this study, carbon nitride/titania nanotubes (C3N4/TiO2 NTs) composites were synthesized for the enhanced visible light mediated photocatalytic degradation and pre-treatment of wastewater sludge for enhanced biogas production. The co-existence of C3N4 and TiO2 NTs and visible light activity was confirmed by XRD, TEM, UV-visible and PL spectroscopy. The photocatalytic performance of TiO2 NTs with 2% of melamine (precursor of C3N4), enhanced the degradation of 2-chlorophenol (2-CP) (kâ¯=â¯0.0176 minâ1), where 96.6% removal was achieved at optimum pH 7.0 and 2-CP concentration of 30â¯mg/L. On the other hand, the application of C3N4/TiO2 NTs for solubilization of the rigid structure of sludge by photocatalysis released the soluble organics showing an improvement in sCOD production (4587â¯mg/L). Subsequently, anaerobic digestion of solubilized sludge has improved the methane production (723.4â¯mlâ¯kgâ1â¯VS) by 1.37 and 1.6 times compared to that in anaerobic digestion with photolytic and raw sludge, thus showing a promising applicability for biogas production from sludge and wastewater treatment.
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Authors
Muzammil Anjum, Rajeev Kumar, S.M. Abdelbasir, M.A. Barakat,