Biodegradability enhancement of coking wastewater by catalytic wet air oxidation using aminated activated carbon as catalyst

Chen, Honglin; Guo, Yang; Feng, Yujun; Shi, Changli; Xu, Shirong; Cao, Wei-Ping; Zhang, Xiaoming

doi:10.1016/j.cej.2012.05.082

Cited by 47 publications

(19 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the literature, there are virtually no data on the application of nitrogen-doped carbon nanomaterials as catalysts or catalyst supports in the CWAO processes. Only in a recent work [24], aminated active carbon (AC) was studied as a catalyst in the CWAO of coking wastewater at 140-160 • C and 0.2-1 MPa of oxygen partial pressure. The ACs aminated at 450-650 • C showed a little higher activity than the parent untreated AC.…”

Section: Introductionmentioning

confidence: 99%

Ruthenium nanoparticles supported on nitrogen-doped carbon nanofibers for the catalytic wet air oxidation of phenol

Ayusheev

Taran

Seryak

et al. 2014

Applied Catalysis B: Environmental

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Ruthenium nanoparticles supported on nitrogen-doped carbon nanofibers for the catalytic wet air oxidation of phenol

Ayusheev

Taran

Seryak

et al. 2014

Applied Catalysis B: Environmental

View full text Add to dashboard Cite

“…However, aerobic processes require high energy input, generate large volumes of sludge, and do not adapt well to influent fluctuations . Toxic components of CWW are generally reduced by applying pretreatment methods like ammonia stripping and solvent extraction (Chen et al 2012;Yuan et al 2012), but the concentration of refractory compounds in pretreated effluent remains high (Wang et al 2010).…”

Section: Introductionmentioning

confidence: 99%

Performance and microbial community composition in a long-term sequential anaerobic-aerobic bioreactor operation treating coking wastewater

Joshi

Zhang

Tian

et al. 2016

Appl Microbiol Biotechnol

View full text Add to dashboard Cite

The combined anaerobic-aerobic biosystem is assumed to consume less energy for the treatment of high strength industrial wastewater. In this study, pollutant removal performance and microbial diversity were assessed in a longterm (over 300 days) bench-scale sequential anaerobicaerobic bioreactor treating coking wastewater. Anaerobic treatment removed one third of the chemical oxygen demand (COD) and more than half of the phenols with hydraulic retention time (HRT) of 42 h, while the combined system with total HRT of 114 h removed 81.8, 85.6, 99.9, 98.2, and 85.4 % of COD, total organic carbon (TOC), total phenols, thiocyanate, and cyanide, respectively. Two-dimensional gas chromatography with time-of-flight mass spectrometry showed complete removal of phenol derivatives and nitrogenous heterocyclic compounds (NHCs) via the combined system, with the anaerobic process alone contributing 58.4 and 58.6 % removal on average, respectively. Microbial activity in the bioreactors was examined by 454 pyrosequencing of the bacterial, archaeal, and fungal communities. Proteobacteria (61.2-93.4 %), particularly Betaproteobacteria (34.4-70.1 %), was the dominant bacterial group. Ottowia (14.1-46.7 %), Soehngenia (3.0-8.2 %), and Corynebacterium (0.9-12.0 %), which are comprised of phenol-degrading and hydrolytic bacteria, were the most abundant genera in the anaerobic sludge, whereas Thiobacillus (6.6-43.6 %), Diaphorobacter (5.1-13.0 %), and Comamonas (0.2-11.1 %) were the major degraders of phenol, thiocyanate, and NHCs in the aerobic sludge. Despite the low density of fungi, phenol degrading oleaginous yeast Trichosporon was abundant in the aerobic sludge. This study demonstrated the feasibility and optimization of less energy intensive treatment and the potential association between abundant bacterial groups and biodegradation of key pollutants in coking wastewater.

show abstract

“…These species, and probably a fraction of the carbonaceous deposits, are further oxidized into CO 2 and H 2 O. The role of Nfunctionalities is to increase the electron density on the surface of the carbon material, which promotes the oxidation reactions taking place during the degradation and mineralization of phenol [17,37,50].…”

Section: Intensification Conditionsmentioning

confidence: 99%

“…Carbon materials, such as activated carbons [17][18][19][20][21][22][23][24], carbon xerogels [18,25,26] and carbon nanotubes (CNTs) [1,3,[27][28][29][30][31] have already been successfully used as catalysts for the CWO of organic compounds. In particular, the application of CNTs as catalyst is interesting due to their thermal and mechanical properties, and non-porous nature (minimizing mass transfer resistances) [32,33].…”

Section: Introductionmentioning

confidence: 99%

Catalytic wet oxidation of organic compounds over N-doped carbon nanotubes in batch and continuous operation

Santos

Soares

Silva

et al. 2016

Applied Catalysis B: Environmental

View full text Add to dashboard Cite

Biodegradability enhancement of coking wastewater by catalytic wet air oxidation using aminated activated carbon as catalyst

Cited by 47 publications

References 38 publications

Ruthenium nanoparticles supported on nitrogen-doped carbon nanofibers for the catalytic wet air oxidation of phenol

Ruthenium nanoparticles supported on nitrogen-doped carbon nanofibers for the catalytic wet air oxidation of phenol

Performance and microbial community composition in a long-term sequential anaerobic-aerobic bioreactor operation treating coking wastewater

Catalytic wet oxidation of organic compounds over N-doped carbon nanotubes in batch and continuous operation

Contact Info

Product

Resources

About