Bioaugmentation and treatment of cephalexin drug-based pharmaceutical effluent in an upflow anaerobic fluidized bed system

Saravanane, R.; Murthy, D. V. S.; Krishnaiah, K.

doi:10.1016/s0960-8524(00)00121-8

Cited by 43 publications

(11 citation statements)

References 13 publications

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“…Recent papers have demonstrated that pharmaceutical wastewaters are biodegradable under aerobic conditions [6,[20][21][22]. Some researchers reported that anaerobic treatment systems could also be used to treat the antibiotics [23][24][25][26][27]. Advanced water treatment technologies can remove many contaminants; however, this technology is expensive and may not be affordable for many treatment plants.…”

Section: Introductionmentioning

confidence: 99%

Relationships between chemical oxygen demand (COD) components and toxicity in a sequential anaerobic baffled reactor/aerobic completely stirred reactor system treating Kemicetine

Sponza

Demirden²

2010

Journal of Hazardous Materials

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Section: Introductionmentioning

confidence: 99%

Relationships between chemical oxygen demand (COD) components and toxicity in a sequential anaerobic baffled reactor/aerobic completely stirred reactor system treating Kemicetine

Sponza

Demirden²

2010

Journal of Hazardous Materials

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“…Operation conditions were: 20 µL sample volume; 5 mM H 2 SO 4 as a mobile phase; flow rate of 0.7 mL/min and a column temperature of 65˚C. The total carbohydrate content was analyzed by the Anthrone method [10] Chemical oxygen demand (COD), total Kjeldahl nitrogen (TKN), and ammonium nitrogen and alkalinity were measured according to standard methods for the examination of water and wastewater [14]. Chemical oxygen demand (COD), pH, total solids (TS), volatile solids (VS), volatile organic acids, total phosphorus and total Kjeldahl nitrogen (TKN) were determined in accordance with the procedures described in the Standard Methods [15].…”

Section: Methodsmentioning

confidence: 99%

“…This increases the population of bacteria after upsets from uncontrolled biomass loss, fluctuations in pH, toxic events, or temperature decrease [8] and degradation of specific substrates [9]. For anaerobic fermentation, bioaugmentation has been investigated at laboratory scale to improve start-up of new digesters [10]. The economics value as a result of this study was the optimum inoculums concentration for start-up culture.…”

Section: Introductionmentioning

confidence: 99%

Comparison of ASBR and CSTR reactor for hydrogen production from palm oil mill effluent under thermophilic condition

Seengenyoung¹,

O‐Thong²,

Prasertsan³

2014

ABB

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Hydrogen production from palm oil mill effluent (POME) by Thermoanaerobacterium thermosaccharolyticum PSU-2 was investigated both in batch and continuous reactors using anaerobic sequencing batch reactor (ASBR) and continuous stirred tank reactor (CSTR). The hydrogen production determined from batch experiment of POME at an inoculum size of 0%, 10%, 20% and 30% (v/v) was 161, 201, 246 and 296 mL H 2 /g-COD with COD removal efficiency of 21%, 23%, 23% and 23%, respectively. Continuous hydrogen production was start-up with 30% (v/v) inoculum in both ASBR and CSTR reactors and more than 30% COD removal could be obtained at HRT of 4 days, corresponding to OLR of 11.3 g COD/ L·day. Similar hydrogen production rates of 2.05 and 2.16 L H 2 /L. day were obtained from ASBR and CSTR, respectively. COD removal efficiency of ASBR was 37.7%, while it was 44.8% for CSTR. However, ASBR was stable in term of alkalinity, while the CSTR was stable in term of hydrogen production, soluble metabolites concentration and alkalinity. Therefore, the CSTR was found to be more stable in hydrogen production than ASBR under the same OLR.

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“…Appropriate growth conditions for culture enrichment such as availability of nutrients and target compounds, and suitable environmental conditions (pH and temperature) are provided in the ERs to induce the desired degradation capability. ER has been successfully applied in wastewater treatment for the removal of naphthalene and phenanthrene (Cardinal and Stenstrom, 1991), 1-naphthylamine (Babcock et al, 1992), pentachlorophenol (Jittwattanarat et al, 2007a), nitrogen (Jittwattanarat et al, 2007b;Leu and Stenstrom, 2010), and pharmaceutical drugs such as cephalexin and cephradine (Saravanane et al, 2001a;.…”

Section: Gel Electrophoresismentioning

confidence: 99%

In situ Groundwater Remediation Using Enricher Reactor – Permeable Reactive Biobarrier

Kasi¹,

McEvoy²,

Padmanabhan³

et al. 2010

proc water environ fed

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Permeable reactive biobarrier (PRBB) is a flow-through zone where microorganisms degrade contaminants in groundwater. Discontinuous presence of contaminants in groundwater causes performance loss of a PRBB in removing the target contaminant. A novel enricher reactor (ER) -PRBB system was developed to treat groundwater with contaminants that reappear after an absence period. ER is an offline reactor for enriching contaminant degraders, which were used for augmenting PRBB to maintain its performance after a period of contaminant absence. The ER-PRBB concept was initially applied to remove benzene that reappeared after absence periods of 10 and 25 days. PRBBs without ER augmentation experienced performance losses of up to 15% higher than ER-PRBBs.The role of inducer compounds in the ER to enrich bacteria that can degrade a mixture of benzene, toluene, ethylbenzene, and xylene (BTEX) was investigated with an objective to minimize the use of toxic chemicals as inducers. Three inducer types were studied: individual BTEX compounds, BTEX mixture, and benzoate (a non toxic and a common intermediate for BTEX biodegradation). Complete BTEX removal was observed for degraders enriched on all three inducer types; however, the removal rates were dependent on the inducer type. Degraders enriched on toluene and BTEX had the highest degradation rates for BTEX of 0.006 to 0.014 day -1 and 0.006 to 0.012 day -1 , respectively, while degraders enriched on benzoate showed the lowest degradation rates of 0.004 to 0.009 day -1 .The ER-PRBB technique was finally applied to address the performance loss of a PRBB due to inhibition interactions among BTEX, when the mixture reappeared after a iv 10 day absence period. The ER-PRBBs experienced minimal to no performance loss, while PRBBs without ER augmentation experienced performance losses between 11% and 35%. Presence of ethanol during the BTEX absence period increased the performance loss of PRBB for benzene removal. PRBBs augmented with degraders enriched on toluene alone overcame the inhibition interaction between benzene and toluene indicating that toluene can be used as a single effective inducer in an ER. The ER-PRBB was demonstrated to be a promising remediation technique and has potential for applications to a wide range of organic contaminants.v ACKNOWLEDGEMENTS

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Bioaugmentation and treatment of cephalexin drug-based pharmaceutical effluent in an upflow anaerobic fluidized bed system

Cited by 43 publications

References 13 publications

Relationships between chemical oxygen demand (COD) components and toxicity in a sequential anaerobic baffled reactor/aerobic completely stirred reactor system treating Kemicetine

Relationships between chemical oxygen demand (COD) components and toxicity in a sequential anaerobic baffled reactor/aerobic completely stirred reactor system treating Kemicetine

Comparison of ASBR and CSTR reactor for hydrogen production from palm oil mill effluent under thermophilic condition

In situ Groundwater Remediation Using Enricher Reactor – Permeable Reactive Biobarrier

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