Magnetic Separation Effect of Magnetic Field Intensity. The magnetic separation was performed on the pyrolysis residues to investigate the possibility of …

The magnetic separation is a simple method based on the selective recovery of the magnetic adsorbents using a magnetic field and has been reported for several carbonaceous materials [23,24]. Magnetic composites of GO with paramagnetic electrolytes were prepared by electrostatic interactions and then used as adsorbent for …

info_outlined. Nodes are locations in the document that facilitate reading from beginning to end. You can navigate node by node or select one to jump to.

A magnetic solid base catalyst (potassium phosphate/ferroferric oxide) was prepared and used for catalytic fast pyrolysis of poplar wood to selectively produce phenolic-rich bio-oil. Pyrolysis–gas chromatography/mass spectrometry experiments were conducted to investigate the effects of pyrolysis temperature and catalyst-to-biomass …

Loading of magnetite into biochar (magnetic biochar) can overcome the separation problems and offers fast recycling process from waters by an external magnetic field. ... Wang et al. synthesized magnetic biochar from hazelnut shell by introducing ZnCl 2 as an activating agent and FeCl 3 as a magnetic source by one-step pyrolysis method, …

Scientific Reports - Magnetic field coupling with lunar soil simulants. ... For each test, separation between transmit coil and receive coil is approximately 40 mm, which is the distance for ...

The magnetic biochar performed well in combining adsorption and separation recycle for the removal of Cr (VI) in water. The Cr (VI) adsorbance of the biochar was increased with the increase in pyrolysis temperature, and the magnetic biochar derived from corncobs showed better performance for both magnetization and removal of Cr (VI) than …

Fig. 7 (b) shows the effect of wet magnetic separation time on the recovery (carbothermal reduction temperature: 650 °C, magnetic separation solid-liquid ratio: ... vacuum pyrolysis and dynamic pyrolysis on the composition of NMC-lithium battery cathode-material production scraps and separation of the current collector. Resour. …

The iron was recovered by magnetic separation with magnetic intensity at 1160 G for 20 min. Under the optimum operation, 61.38% of zinc was recovered and 80.9% of iron recovery was achieved.

Therefore, we propose a continuous pyrolysis-magnetic separation (CPM) process to dispose of oil sludge while recovering pyrolysis oil and steel slag. In the CPM process, the waste steel slag functions as catalyst because of its mineral composition but can also be recovered by magnetic separation after being reduced by the pyrolysis …

In these cases, impurities may cause carbon fouling and require frequent separation/regeneration treatments. Magnetic separation allows easy isolation and washing, followed by redispersion [35]. Herein, we report the successful magnetization of oak wood and bark fast pyrolysis biochars to overcome the clogging during adsorbent …

The cleaning of coal by pyrolysis followed by magnetic separation appears to be the most promising lignite cleaning process. Pyrolysis is considered not only a promising technology to produce liquid, gaseous and solid carbonaceous fuels, but also a fundamental step for fuels and chemicals which may be combusted directly or refined for recovery ...

This work introduces a novel methodology for synthesis of magnetic biochar from cellulose using an electromagnetic induction technology. More rough surfaces, sharp corners and edges, and compact regular pore structure with Fe 3 O 4 and Fe 2 O 3 of magnetic biochar was obtained. Such magnetic biochar possessed higher specific …

Nevertheless, the inherent agglomeration tendency of MgO within magnetic biochar has been identified as a significant impediment to its P adsorption efficiency. In this study, the nano-MgO was confined within magnetic biochar via a novel two-step pyrolysis process involving KHCO 3 and HNO 3 activation. This novel fabrication process resulted in ...

Oil sludge pyrolysis with the addition of different amounts of steel slag at different temperatures was conducted by employing a continuous pyrolysis-magnetic separation (CPM) process.

In this study, lowering of pyritic sulfur took place after thermal treatment at 500–700°C (pyrolysis) using a wet high-intensity magnetic separation process. The samples were subjected to size reduction to −25 µm and characterized with X-ray diffraction (XRD), proximate and ultimate analysis, and differential thermal analysis (DTA).

Based on this result, a process involving SHPS reduction roasting with corncob pyrolysis reducing gas-magnetic separation was established to recover iron from SHPS. This process not only effectively utilizes the iron oxide in SHPS by converting it into iron concentrate powder for the ironmaking industry but also proves that the pyrolysis …

Preparing of nanoporous carbon-magnetic nanoparticle composite (NPC-Fe 3 O 4). Size of Fe 3 O 4 in the composite adjusted by controlling the pyrolysis temperature.. T 2 relaxivity of NPC-Fe 3 O 4 optimized for construction of magnetic resonance sensor.. Ultrasensitive detection of AFB 1 in various food samples with complicated matrix.. …

The agricultural waste, i.e., peanut husk, was modified with iron oxide employed in Cr(VI) removal from wastewater. In this study, standard biochar (BCPH) was prepared from the pyrolysis process from peanut husk. The prepared biochar was magnetized by impregnating the iron oxide onto the surface of the biochar to enhance …

The development of low-cost adsorbent is an urgent need in the field of wastewater treatment. In this study, sludge-based magnetic biochar (SMB) was prepared by pyrolysis of sewage sludge and …

Preparation of magnetic biochar by impregnation-pyrolysis is conducted by impregnating biomass with a solution containing transition metal salts, removing the solvent, and then pyrolysing the dried residue in a muffle furnace under an oxygen-limited or inert atmosphere to afford the magnetic biochar product. ... and the separation and recovery ...

Magnetic separation desulfurization technology is a new physical desulfurization technology before combustion. It has the characteristics of low energy consumption, simple treatment equipment, and a slight loss of heat value of coal. ... (AC) to obtain Fe/RC and Fe/AC. Microwave pyrolysis (MP) was carried out to process low-rank …

In this study, lowering of pyritic sulfur took place after thermal treatment at 500–700°C (pyrolysis) using a wet high-intensity magnetic separation process.

The results show that when the grinding particle size of −0.040 mm accounts for 80.1 %, the content of Pb and Zn in pyrolysis slag decreased to 0.32 % and 0.17 %, respectively, by only using the magnetic separation method. Then the …

To investigate the effcet of co-pyrolysis on iron recovery and iron grade, magnetic separation experiments were conducted for the various solid residues samples. Fig. 7 a shows the iron recovery and iron grade as functions of the mass fraction of RM. The co-pyrolysis was conducted at 550 °C and the used magnetic separation flux density …

The results show that the MCS had excellent magnetic separation properties. When the pH value was higher than 5, the pH of the aniline solution had little effect on the adsorption capacity of MCS and CS. ... Xu J, Wu M, et al. Effects of biomass pre-pyrolysis and pyrolysis temperature on magnetic biochar properties. J Anal Appl …

The novel process involved pyrolysis of high sulfur coal at low temperature and then a dry magnetic separation. For testing the cleaning coal process, a Chinese high sulfur coal, Baisu coal was pyrolyzed in a fixed bed reactor from 400 to 700°C for 30min, and then separated by a dry magnetic separator.

In the present study, a magnetically separable adsorbent, manganese ferrite (MnFe 2 O 4)/sugarcane bagasse biochar magnetic composites (MFSCBB-MCs), was fabricated through a one-step pyrolysis method.The characterization of the prepared adsorbents indicated that MnFe 2 O 4 nanoparticles were successfully embedded into …

Slow, fast and flash pyrolysis followed by high intensity dry magnetic (HIDM) separation experiments were conducted to obtain improved solid fuels. Pyrolysis experiments were performed in three different apparatus, and important parameters of processes, temperature, particle size, residence time and heating rate were studied to …

In this study, fast pyrolysis followed by high intensity dry magnetic (HIDM) separation e xperiments. were conducted to obtain liquid and solid fuels from Çayırhan region lignites. First ...