Effect of easily degradable substrate on anaerobic degradation of pentachlorophenol in an upflow anaerobic sludge blanket (UASB) reactor

Shen, Dongsheng; Liu, Xinwen; Feng, Huajun

doi:10.1016/j.jhazmat.2004.12.024

Cited by 60 publications

(30 citation statements)

References 25 publications

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“…Previous studies revealed that the use of additional carbon sources as co-substrate can enhance the biodegradation of recalcitrant compounds, such as chlorophenols, insecticides, PAHs and azo dyes (Xiangchun et al, 2003;Shen et al, 2005;Rentz et al, 2005;Majumder and Gupta, 2008;Blánquez et al, 2008;Bajaj et al, 2008;Ahmad et al, 2010;Shawaqfeh, 2010). However, most of these studies focused on these recalcitrant compounds in synthetic wastewater, and only a few studies have explored the effects of additional carbon sources on complex component degradation in actual integrated industrial wastewater.…”

Section: Introductionmentioning

confidence: 99%

The stimulating effects of the addition of glucose on denitrification and removal of recalcitrant organic compounds

Wang

2014

Braz. J. Chem. Eng.

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-A laboratory scale aerobic oxidation ditch combined with an anoxic reactor was conducted to treat wastewater from a chemical industrial park in Tianjin, China. The wastewater exhibited a low biodegradability, and the results of gas chromatography mass spectrometry (GC-MS) analysis showed that some recalcitrant organic components are present in the wastewater. Ammonia nitrogen (NH 4 + -N) removal efficiency of over 90% was obtained. However, the removal efficiencies of total nitrogen (TN) and chemical oxygen demand (COD) were below 16% and 15%, respectively. The addition of glucose to the anoxic reactor in the system increased the removal efficiencies of TN and COD to approximately 72% and 25.57%, respectively. Results of mass balance indicate that about 60% of the external carbon was consumed as electron donor for denitrification, while 40% was consumed as a substrate for co-metabolism. The optimal dose of added glucose was also investigated, which was determined at 0.35 to 1.20 (COD glucose :COD original ).

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Section: Introductionmentioning

confidence: 99%

The stimulating effects of the addition of glucose on denitrification and removal of recalcitrant organic compounds

Wang

2014

Braz. J. Chem. Eng.

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“…As the concentration of the 2-CP increases the organic loading rate and the toxicity also increased and this may be the reason for the decrease in the COD removal. Shen et al, (2005) [1] reported that the COD removal was about 90.4% with initial pentachlorophenol concentration of 100 mgL -1 using UASB reactor. Pokhrel and Viraraghavan (2004) [11] reported that the optimum removal of COD was 90.4% for chlorophenols found in Kraft bleaching wastewater using UASB reactor.…”

Section: A Removal Of 2-cpmentioning

confidence: 99%

“…Some of these compounds are important, such as the organochloride compounds released into the environment in increasing amounts by their application in a variety of activities. Chlorophenols are chloroaromatic and commonly used as biocides, flame retardants, wood treatment agents, solvents and in synthetic chemistry [1]. They are toxic to a wide range of organisms and are common contaminants in water and soil.…”

Section: Introductionmentioning

confidence: 99%

Biomineralization of 2-Chlorophenol in an UASB Reactor with Starch Water as co-substrate

Sivarajan¹,

Arutchelvan²,

Nagarajan³

2017

IJERT

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Chlorophenol compounds are environmental pollutants that are both anthropogenic and xenobiotics. Some of these chemicals are carcinogenic and toxic to a number biochemical processes. The present research aims at 2-CP degradation in a UASB reactor with starch water as cosubstrate. Synthetic 2-CP and starch water were given as feed to UASB reactor at an HRT of 24 h. The performance of the reactor was remarkably stable and efficient during 2-CP additions at a range of 5-800 mgL -1 . The reduction of 2-CP and COD was found to be 100-67.9 and 98.1-59.3% respectively. The optimum 2-CP and COD removal efficiencies were 97.5 and 90.4%. The VFA concentrations of the reactor were lesser than 250 mgL -1 . The biogas production at 600 mgL -1 of 2-CP was 20 Ld -1 .

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“…Although such reactions are very efficient and faster, the presence of inhibitory co-pollutants may lead to the drastic reduction of catalytic activity of metallic systems thereby precluding their field scale application. Aerobic and anaerobic biodegradation of AOX compounds, in particular PCP have been studied in great depth [2,[13][14][15][16][17][18]. While biodegradation may prove economical, requirements for specific environmental conditions (methanogenic or sulfate reducing) in case of anaerobic degradation, and long acclimation and retention times restricts its field application.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical treatment of pentachlorophenol in water and pulp bleaching effluent

Patel

Suresh

2008

Separation and Purification Technology

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Effect of easily degradable substrate on anaerobic degradation of pentachlorophenol in an upflow anaerobic sludge blanket (UASB) reactor

Cited by 60 publications

References 25 publications

The stimulating effects of the addition of glucose on denitrification and removal of recalcitrant organic compounds

The stimulating effects of the addition of glucose on denitrification and removal of recalcitrant organic compounds

Biomineralization of 2-Chlorophenol in an UASB Reactor with Starch Water as co-substrate

Electrochemical treatment of pentachlorophenol in water and pulp bleaching effluent

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