Details

Autor(en) / Beteiligte

• Hui Zhang Jianguo Liu Changjin Ou Faheem Jinyou Shen Hongxia Yu Zhenhuan jiao Weiqin Han Xiuyun Sun Jiansheng Li Lianjun Wang

Titel

Reuse of Fenton sludge as an iron source for NiFe204 synthesis and its application in the Fenton-based process

Ist Teil von

• 环境科学学报：英文版, 2017 (3), p.1-8

Erscheinungsjahr

2017

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The potentially hazardous iron-containing sludge from the Fenton process requires proper treatment and disposal, which often results in high treatment cost. In this study, a novel method for the reuse of Fenton sludge as an iron source for the synthesis of nickel ferrite particles （NiFe204） is proposed. Through a co-precipitation method followed by sintering at 800℃, magnetic NiFe204 particles were successfully synthesized, which was confirmed by powder X-ray diffraction （XRD）, scanning electronic microscopy （SEM）, energy dispersive spectroscopy （EDS）, Fourier transform infrared spectroscopy （FT-IR） and Raman spectros- copy. The synthesized NiFe204 could be used as an efficient catalyst in the heterogeneous Fenton process. In phenol degradation with H202 or NiFe204 alone, the phenol removal efficiencies within the reaction time of 330 min were as low as 5.9% ±0.1% and 13.5% ± 0.4%, respectively. However, in the presence of both NiFe204 and H202, phenol removal efficiency as high as 95% ± 3.4% could be achieved, indicating the excellent catalytic performance of NiFe204 in the heterogeneous Fenton process. Notably, a rapid electron exchange between --NiH and --Fem ions in the NiFe204 structure could be beneficial for the Fenton reaction. In addition, the magnetic catalyst was relatively stable, highly active and recoverable, and has potential applications in the Fenton process for organic pollutant removal.