Degradation and Toxic Effects of Acrylic Acid on Anaerobic Systems

Qu, Mingbo; Bhattacharya, Sanjoy K.

doi:10.1061/(asce)0733-9372(1996)122:8(749)

Cited by 22 publications

(23 citation statements)

References 15 publications

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“…Enriched glucose cultures were employed in batch serum bottles and chemostats to study the anaerobic degradability of acrylic acid in acidogenic systems. 30 The maximum speci®c rate constant and K s value for acrylic acid degradation were determined to be 1.2 d À1 and 22.9 mg dm À3 , respectively. Elefsiniotis and Oldham 39 also investigated the effect of SRT on the acidogenic phase of primary sludge using a completely-mixed reactor and an up¯ow anaerobic sludge blanket reactor (UASB).…”

Section: Kinetics and Modellingmentioning

confidence: 99%

“…The adverse effects of toxic organic substances on the acid-phase digestion were assessed by Qu and Bhattacharya 30 and Piringer and Bhattacharya.…”

Section: à3mentioning

confidence: 99%

“…2-nitrophenol, 3-nitrophenol and 4-nitrophenol were completely removed up to 40 mg dm À3 , while complete removal of 2,4-dinitrophenol occurred up to 5 mg dm À3 . According to the ®ndings of Qu and Bhattacharya, 30 it was necessary to acclimatize both acetate and propionate utilizers to acrylic acid in order to treat acrylic wastes in methanogenic chemostat systems. Despite the acclimatizion, the acrylic acid loading rate might be limited to about 0.35 g g À1 VSS d…”

Section: Inhibition and Toxicitymentioning

confidence: 99%

“…30 The acrylic acid removal attained was 99%, at an SRT of 1. 61 The number of bacilli seemed independent of the feed substrate concentration or HRT, while sarcinae appeared in digesters with high feed substrate concentrations and short HRTs.…”

mentioning

confidence: 93%

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Two‐phase anaerobic digestion processes: a review

Demirel

Yenigün

2002

J of Chemical Tech & Biotech

354

144

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This review provides a detailed comparative summary of the recent and current research activities in the area of two-phase anaerobic digestion processes. The acid phase and the methane phase are ®rst evaluated, individually, from microbiological, kinetic and modelling, process optimization, operation and control, inhibition, and toxicity points of view. The overall process performance is subsequently evaluated as a whole. Finally, areas requiring further research are determined.

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Section: Kinetics and Modellingmentioning

confidence: 99%

“…The adverse effects of toxic organic substances on the acid-phase digestion were assessed by Qu and Bhattacharya 30 and Piringer and Bhattacharya.…”

Section: à3mentioning

confidence: 99%

Section: Inhibition and Toxicitymentioning

confidence: 99%

mentioning

confidence: 93%

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Two‐phase anaerobic digestion processes: a review

Demirel

Yenigün

2002

J of Chemical Tech & Biotech

354

144

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“…Though the mechanisms have yet to be determined, acclimation to toxic or inhibitory conditions in continuous cultures or a shift in the microbial community is possible. Acclimation to toxicity in continuous cultures has been previously observed (Gupta et al, 1996;Piringer and Bhattacharya, 1999;Qu and Bhattacharya, 1996). The K t,cDCE toxicity coefficient was therefore adjusted to reflect the observed TCE accumulation and cDCE decline beginning after day 56.…”

Section: Cfstr Modelingmentioning

confidence: 99%

Trichloroethene and cis‐1,2‐dichloroethene concentration‐dependent toxicity model simulates anaerobic dechlorination at high concentrations. II: Continuous flow and attached growth reactors

Sabalowsky¹,

Semprini²

2010

Biotech & Bioengineering

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A model that was used to describe toxicity from high concentrations of chlorinated aliphatic hydrocarbons (CAHs) on reductively dechlorinating cultures in batch reactors (Sabalowsky and Semprini (in press)) was extended here to simulate observations in continuous flow suspended and attached growth reactors. The reductively dechlorinating anaerobic Evanite subculture (EV-cDCE) was fed trichloroethene (TCE) and excess electron donor to accumulate cis-1,2-dichloroethene (cDCE) in a continuous flow stirred tank reactor (CFSTR); and an attached growth recirculating packed column (RPC). A concentration-dependent toxicity model used to simulate the results of batch reactors in part I (Sabalowsky and Semprini (in press) Biotechnol Bioeng) also simulated well the observations for the CFSTR and RPC growth modes. The toxicity model incorporates cDCE and TCE toxicity coefficients that directly increase the cell decay coefficient in proportion with cDCE and TCE concentrations. Simulated estimates of the cDCE and TCE toxicity coefficients indicate reductively dechlorinating cells are most sensitive to high concentrations of cDCE and TCE in batch-fed growth, followed by CFSTR, with attached growth being least sensitive. The greater toxicity of TCE than cDCE, and ratio of the modeled toxicity coefficients, agrees with previously proposed models relating toxicity to partitioning in the cell wall (K(M/B)), proportional to octanol-water partitioning (K(OW)) coefficients.

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Inhibitory effects and biotransformation of acrylic acid in computer-controlled pH-Stat CSTRs

Demirer

Speece

1999

Biotechnol. Bioeng.

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In this study, the inhibitory effects and anaerobic biotransformation of acrylic acid in computer‐controlled pH‐stat completely stirred tank reactors (CSTRs) with two different cultures, namely unacclimated and acrylate‐acclimated acetate‐enriched Methanosarcina and homogenized (crushed) granular cultures, were investigated. The microbial acclimation, influent concentration, and loading rate of acrylic acid were studied in the experiments. The experimental results revealed that methanogenic cultures at a concentration of 3200 ± 80 mg/L as volatile suspended solids (VSS) could be acclimated to acrylic acid up to a loading rate of 220 mg/L per day (0.068 g acrylic acid/g VSS per day) in the presence of a constant acetate concentration of 2000 ± 200 mg/L as the primary substrate after 300 days of acclimation. The same cultures (680 ± 80 mg/L as VSS), after 80 days of acclimation to acrylic acid as the sole carbon source, transformed acrylic acid up to the loading rate of about 200 mg/L per day (0.29 g acrylic acid/g VSS per day) almost completely (>99%) to acetic and propionic acid, but could not effectively metabolize these intermediate products. Acrylate‐acclimated homogenized granular cultures (6900 ± 80 mg/L as VSS) effectively metabolized 2200 mg/L per day (0.32 g acrylic acid/g VSS per day) of acrylic acid, as the sole carbon source, after 50 days of severe inhibition. © 1999 John Wiley & Sons, Inc. Biotechnol Bioeng 62: 200–207, 1999.

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Degradation and Toxic Effects of Acrylic Acid on Anaerobic Systems

Cited by 22 publications

References 15 publications

Two‐phase anaerobic digestion processes: a review

Two‐phase anaerobic digestion processes: a review

Trichloroethene and cis‐1,2‐dichloroethene concentration‐dependent toxicity model simulates anaerobic dechlorination at high concentrations. II: Continuous flow and attached growth reactors

Inhibitory effects and biotransformation of acrylic acid in computer-controlled pH-Stat CSTRs

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