Turf soil enhances treatment efficiency and performance of phenolic wastewater in an up-flow anaerobic sludge blanket reactor

How Photocatalyst Dosage and Ultrasound Application Influence the Photocatalytic Degradation Rate of Phenol in Water: Elucidating the Mechanisms Behind

“…Because of its high toxicity, it is defined as a priority pollutant. Various techniques have been developed for its removal from the effluents [2], including (i) classical separation techniques (e.g., distillation, liquid-liquid extraction, adsorption, membrane separation) [3,4], (ii) biochemical treatments (aerobic and anaerobic) [5], and (iii) advanced oxidation processes (e.g., wet air oxidation, ozonation, peroxide wet oxidation, electrochemical and photocatalytic oxidation) [6][7][8][9]. Apart from its industrial relevance, phenol is frequently described in the literature as a model component to assess the effectiveness of various advanced oxidation processes (AOP) to remove low biodegradable or toxic organic components from wastewater.…”

Rapid aerobic granulation using biochar for the treatment of petroleum refinery wastewater

“…Two identical SBR reactors (R0, control; Rw, added with biochar-WPS) were employed, with a working volume of 2 L (7.0 cm of internal diameter and 58.2 cm of height). Biochar-WPS was added into Rw with a concentration of 3% (v/v) (Chen et al 2018). Air was supplied with an air pump (YTZ-312, Shandong, China) through the diffusers located in the reactor bottom ( Fig.…”

Influence of particle size distribution on anaerobic degradation of phenol and analysis of methanogenic microbial community

“…Although the composition of the microbial communities were different under various phenolic wastewater treatment conditions, the phyla Chloroflexi, Thermotogae, Cloacimonetes, Firmicutes, Proteobacteria, Synergistetes, and Euryarchaeaota were identified in every phenol-degrading sludge (Wang et al 2017c). Compared to the change in the abundance of other bacteria, the abundance of the phylum Proteobacteria increased along with the size of sludge particles (Chen et al 2018), while the abundance of the genus Methanosaeta (belonging to the phylum Euryarchaeaota) increased when the particle size decreased (Sierra et al 2019). The morphology of the sludge was clearly related to the metabolic characteristics and community structure of the microorganisms (Huang et al 2018); however, to the best of our knowledge, the mechanism underlying phenol degradation in size-distributed phenol-degrading sludge has not been elucidated to date.…”

“…In recent years, the granulation of sludge has successfully accelerated the start-up of anaerobic reactors treating phenolic wastewater. Anaerobic granular sludge has high mass transfer resistance, reducing the toxicity of phenol to microorganisms (Muñoz Sierra et al 2017); however, some issues with anaerobic granular sludge need to be overcome, such as long formation periods when the proper seed is not available and strict operational parameter controls (Chen et al 2018). Consequently, anaerobic membrane bioreactors were employed to treat phenol-containing wastewater (Muñoz Sierra et al 2018;Wang et al 2017b).…”