Experimental Study on Dechlorination of Cold-Rolling Sludge at High-Temperature Roasting

Study on the Formation Mechanism of Cold-Rolled Sludge and the Biodiesel Production from Sludge

“…The chemical states of the Fe element in the recovered solids were analyzed by XPS. As demonstrated in Figure , two characteristic peaks about the Fe element were detected and ascribed to Fe 2p 1/2 and Fe 2p 3/2 , respectively . Through peak splitting, two Fe 2+ peaks at binding energies of 710.85 and 724.07 eV and two Fe 3+ peaks at 713.25 and 725.71 eV were obtained, indicating the presence of FeO and Fe 2 O 3 .…”

“…As demonstrated in Figure 5 , two characteristic peaks about the Fe element were detected and ascribed to Fe 2p 1/2 and Fe 2p 3/2 , respectively. 23 Through peak splitting, two Fe 2+ peaks at binding energies of 710.85 and 724.07 eV and two Fe 3+ peaks at 713.25 and 725.71 eV were obtained, indicating the presence of FeO and Fe 2 O 3 . This result was consistent with the SEM analysis of the extracted solids.…”

“…X-ray photoelectron spectroscopy (XPS, Thermo Scientific K-Alpha, UK) was used to measure the electron energy distribution and the relative strength of electrons at different energies of the extracted solid . Microscopic morphology was observed by scanning electron microscopy (SEM, FEI-SEM, USA) with a TVIPS F416 camera …”

“… 22 Microscopic morphology was observed by scanning electron microscopy (SEM, FEI-SEM, USA) with a TVIPS F416 camera. 23 …”

“…22 Microscopic morphology was observed by scanning electron microscopy (SEM, FEI-SEM, USA) with a TVIPS F416 camera. 23 The residual oil content of the extracted solid was determined by calcination in a muffle furnace (KF1200, China) at 800 °C with a heating rate of 3 °C/min for 3 h. The extracted solid residual oil content (SR, %) was calculated by eq 2:…”