Rapid cultivation of the aerobic granules for simultaneous phenol degradation and ammonium oxidation in a sequencing batch reactor

Mechanism in chlorine‐enhanced Pd catalyst for H2O2in situ synthesis in electro‐Fenton system

“…Environmental Protection Agency due to its high toxicity and difficulty in degradation. 4 Direct discharging phenol-laden wastewater would result in lasting destruction to the environment and human health even at low concentration. 5,6 Thus, much effort has been paid to effectively remove phenol from wastewater.…”

“…[12][13][14] There are two methods for the in situ generation of H 2 O 2 in the EF process: (1) H 2 O 2 is generated via a 2e À oxygen reduction pathway as shown in Reaction (1) on a carbonaceous cathode (activated carbon, 15 graphite-felt, 16 carbon felt, 17,18 and so on); (2) H 2 and O 2 are produced through the electrolysis of H 2 O, then as shown in Reaction (2), H 2 O 2 is directly synthesized from these gases on Pd 19,20 or other noble metals. After its synthesis, H 2 O 2 further decomposes into ˙OH and ˙OOH in the Fenton process as shown in Reactions (3) and (4). The dissociation of the O O bond 21 in H 2 O 2 , the hydrogenation and decomposition 22 of H 2 O 2 are unfavorable in the Pd-catalytic EF process.…”

“…The global demand for phenol has rocketed in recent years, and the amount of phenol in wastewater has increased accordingly. Phenol has been listed as a Priority Pollutant by the United States Environmental Protection Agency due to its high toxicity and difficulty in degradation 4 . Direct discharging phenol‐laden wastewater would result in lasting destruction to the environment and human health even at low concentration 5,6 .…”

Assessment of laboratory scale cylindrical sequencing batch reactor for the treatment of abattoir effluent

“…Several process modifications in the duration associated with each stage can be made to remove nitrogen and phosphorus from wastewater [ 44 , 45 ]. With considerable success, SBRs have been used to treat landfill leachate [ 46 , 47 ], tannery wastewater [ 48 , 49 ], phenolic wastewater [ 50 , 51 ], and a range of other industrial wastewaters. The cylindrical Sequencing batch reactor has begun to gain renown as a better biological treatment system [ 52 – 54 ] due to its low space and power needs, ability to break down harmful contaminants, and ability to withstand greater organic loads and shock loads.…”

Adsorption behaviors of phenol onto gasification residual cokes with different structural and surface properties

“…Phenolic compounds are considered one of the main organic components in industrial wastewater and are mainly produced from high‐temperature coal conversion, 1,2 petroleum refining, 3,4 and polymer synthesis and transformation 5 . Phenol‐containing wastewater cannot be discharged without treatment owing to its toxicity to both human health and the environment 6‐8 .…”