· Abstract: This study investigated the ultrasonic–thermal regeneration of powdered activated carbon (PAC) spent using 4-chlorophenol (4-CP). Similarly, a thermal regeneration process was also studied and the reaction conditions (i.e., regeneration temperature, heating rate, regeneration time) were tested.
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Semantic Scholar extracted view of "Chemical regeneration of spent powdered activated carbon used in decolorization of sodium salicylate for the pharmaceutical industry" by Qimeng Li et al. DOI: 10.1016/J.JCLEPRO.2014.08.008 Corpus ID: 96084206 Chemical
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· Ultrasound-assisted regeneration of powdered activated carbon (PAC) saturated with 4-chlorophenol (4-CP) was investigated in this work. The variables, i.e., acoustic frequency, density levels, regenerating solution species, spent PAC mass, and the number of repeated cycle, were optimized. The UV–Vis spectra, thermogravimetric
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· Experiments were conducted to demonstrate that spent powder activated carbon can be regenerated for reuse by microwave radiation. The spent powder activated carbon tested was prepared from the aqueous solutions of ethanol and acetone. The changes in the temperature and weight of spent activated carbon under microwave
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This study explored the regenerated performance of activated carbon (AC) as SO2 adsorbent. The optimal conditions of SO2 removal were determined by experiment, and then the adsorption efficiency of AC was studied by a method of thermal regeneration. The characteristics of regenerated AC were analyzed by Brunauer-Emmett-Teller (BET) and
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· Since the turn of the 21st century, water pollution has been a major issue, and most of the pollution is generated by dyes. Adsorption is one of the most commonly used dye-removal methods from aqueous solution. Magnetic-particle integration in the water-treatment industry is gaining considerable attention because of its outstanding
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· Powdered activated carbon equilibrium concentrations of 0, 50, 300 and 1000 mg l −1 were studies in plug-flow activated sludge units maintained at sludge ages of 3, 5, 10 and 15 days. It was noted that the percentage removal of the effluent organic matter with respect to that of a control unit increased with increasing carbon equilibrium
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: Yi Li, Hailan Jin, Wenbo Liu, Hang Su, Yao Lu, Jianfen Li · The reuse of powdered activated carbon (PAC) vitally determines the economics and security of the PAC-based adsorption process, while state-of-the-art PAC
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· Properties of powdered activated carbons AMOCO Property PX-21 Aqua Nuchar-SA Hydrodarco-C BET surface area, m2 g- J Iodine number, mg g- Methylene Blue No., mg g- Coomassie Blue No., mg g-1 Predominant particle size,/~m Bulk density, g cm-3 tO
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· There are currently three disposal methods for spent active carbon: landfill, incineration, and reactivation. Approximately 68 % of the granular active carbon becomes reactivated, whereas ∼95 % of powdered AC goes to
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DOI: 10.1016/j.cej.2022.137459 Corpus ID: 249591676 Coke Powder Improving the Performance of Desulfurized Activated Carbon from the Cyclic Thermal Regeneration @article{Chen2022CokePI, title={Coke Powder Improving the Performance of
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:Published:2023/01Activated Carbon RegenerationThe regeneration of WPAC through pyrolysis and its adsorption capacity of phosphorus were studied. The optimum conditions for WPAC regeneration were 650 C and 2 h
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· The regeneration of WPAC through pyrolysis and its adsorption capacity of phosphorus were studied. The optimum conditions for WPAC regeneration were 650 °C and 2 h which resulted in a
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Activated carbon Activated carbon, also called activated charcoal, is a form of carbon commonly used to filter contaminants from water and air, among many other uses. It is processed (activated) to have small, low
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· Effects of electric current, conductivity and pH on activated carbon regeneration were investigated, and the optimum conditions were concluded as follows: 100–300 mA of current intensity, 1.39
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· The regeneration of spent activated carbons includes thermal process, wet air oxidation, and chemical and solvent regeneration. Furthermore, the recovery of used activated carbon is dependent on the characteristics of the base material, the activation process, and the type or types of adsorbates (Girgis and El-Hendawy 2002 ).
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:Regeneration of Activated CarbonCarbon Regeneration Process · The mechanisms underlying chemical regeneration of activated carbon loaded with physisorbed organics have been explored. Using four aromatic adsorbates
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· The kinetic analysis revealed that Langmuir model could well describe the adsorption process of PAC, WPAC and RWPAC on PO43−-P and the PO43-P adsorptive followed the pseudo-second-order model. The regeneration of WPAC through pyrolysis and its adsorption capacity of phosphorus were studied. The optimum conditions for WPAC
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Powder activated carbons (PACs) is the most widelyused adsorbent due to its large surface area, well devel-oped pore structure and adsorption capacity 1,2. However, during their applications, PACs
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· Powdered activated carbon equilibrium concentrations of 0, 50, 300 and 1000 mg l −1 were studies in plug-flow activated sludge units maintained at sludge ages of 3, 5, 10 and 15 days. It was noted that the percentage removal of the effluent organic matter with respect to that of a control unit increased with increasing carbon equilibrium
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· The adsorption of glyphosate by using these activated carbons is an endothermic process, and the increase in temperature helps the adsorption of glyphosate when these activated carbons are used. Table 7 shows that all enthalpy changes ΔH are in the range of 41862.7 kJ/mol, indicating that the adsorption of these activated carbons to
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:Regeneration of Activated CarbonCarbon Regeneration Process · There are two principal types of activated carbon used in water and wastewater treatment processes, which differ in their morphology and particle size.
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· This study illustrated the advanced degradation of coal gasification wastewater (CGW) by powdered activated carbon treatment (PACT) coupled with wet air regeneration (WAR). The results demonstrated that the PACT-WAR process achieved high efficiencies on the removal of COD (92.58%), Tph (96.56%), NH 4 + -N (99.52%), and
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Study on regeneration of waste powder activated carbon through pyrolysis The regeneration of WPAC through pyrolysis and its adsorption capacity of phosphorus were studied. The optimum conditions for WPAC regeneration were 650 °C and 2 h which resulted in a recovery of BET surface and total pore volume with a value of 1161.4 m 2 /g
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· The most commonly used activated carbon in water treatment processes is a GAC made from bituminous coal with a typical surface area of 950 – 1050 m 2 g −1 and a particle size of 12 × 40 mesh (0.420 – 1.680 mm) or 8 × 30 mesh (0.590 – 2.380 mm) [4]. The physical/textural (surface area and pore structure) and chemical properties of GAC
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The kinetics data fit a Langmuir-Hinshelwood equation, originally proposed for gasification of other types of carbon, with an activation energy of 2.3 × 10 5 J/mol. Surface area and pore volume measurements indicated that the adsorption capacity of the original carbon could be completely restored by thermal regeneration followed by reaction with steam.
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:Regeneration of Activated CarbonZhifeng Zhang · Commercial powdered activated carbon decorated with isolated Fe‐O 5 sites enables fast H 2 O 2 activation and realizes H 2 O 2 ‐based regeneration with
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· Adsorbents presenting high adsorption capacity, fast adsorption rate, easy regeneration, and a good possibility for reusability are ideal for removing 4-chloro-2-methyl-phenoxyacetic acid (MCPA) or other pesticides from wastewater. Here, the effects of regeneration treatments on adsorption–desorption cycles are examined using two
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DOI: 10.1016/j.watres.2012.03.008 Corpus ID: 2281720 Solar regeneration of powdered activated carbon impregnated with visible-light responsive photocatalyst: factors affecting performances and predictive model. @article{Yap2012SolarRO, title={Solar regeneration
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· Chu, P. & Lau, A. Thermal regeneration of powdered activated carbon (pac) and pac-biological sludge mixtures. Water Research 17, 1125–1138 (1983). Article CAS Google Scholar
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