Anaerobic biotechnology for industrial wastewater treatment

Speece, Richard E.

doi:10.1021/es00115a725

Cited by 819 publications

(736 citation statements)

References 46 publications

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“…Because of very low IC 50 (toxicant concentration eliciting a 50% inhibitory effect) (Speece 1996) , the toxicity of long-chain n-alkanes should be noticed during wastewater treatment. According to Tables 2 and 3, some complicated pollutants such as azo dyes themselves or their metabolic productions might contribute to the toxicity.…”

Section: Resultsmentioning

confidence: 99%

Performance of Anaerobic Process on Toxicity Reduction During Treating Printing and Dyeing Wastewater

Wang

Zhang

et al. 2007

Bull Environ Contam Toxicol

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The paper was to evaluate anaerobic treatment efficiency of reducing toxic compounds by gas chromatography mass spectrometry (GC-MS) analysis combined with biological toxicity test during the treatment process of printing and dyeing wastewater. There had an obvious decrease trend in the response abundance of GC-MS chromatograms between raw influent and anaerobic effluents with the removal of COD. A main component of the raw effluent was long-chain n-alkanes. Alkanes in the expanded granular sludge bed (EGSB) categories could be reduced by 75%. EGSB had a better degradation performance on some complicated pollutants and toxicity. The most sensitive bioassay was Microtox bioassay.

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Section: Resultsmentioning

confidence: 99%

Performance of Anaerobic Process on Toxicity Reduction During Treating Printing and Dyeing Wastewater

Wang

Zhang

et al. 2007

Bull Environ Contam Toxicol

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“…(large archaea cocci quartet) and Methanosaeta sp. (square-ended rods filaments), which are the only known acetate-metabolizing methanogens (Speece, 1983). The identity and function (ecophysiology) of such microbes is beyond the scope of this study but could be revealed by applying environmental molecular microbiology approaches.…”

Section: Sem Analysismentioning

confidence: 99%

Toxicity and biodegradability of caffeic acid in anaerobic digesting sludge

Hernández

Edyvean

2018

WSA

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Caffeic acid in waste comes from a variety of industries, and its disposal is likely to increase due to emerging processes such as graphene production and use in healthcare products. The current sustainable option to treat waste caffeic acid and prevent its natural transformation in soil to greenhouse gases, is anaerobic digestion. However, little is known about the toxic and inhibitory effects of caffeic acid on biogas production as well as its ultimate anaerobic biodegradability; or about the reactiveadsorptive processes taking place with caffeic acid in sludge, metabolic intermediates, thermodynamic limitations and the effects on extracellular polymeric substances (EPS). Standard methods revealed that 80% of biogas production (EC 80 ) from a readily digestible biomass was inhibited at 389 mg caffeic acid·g -1 VSS. Up to 52% of caffeic acid was biodegraded. β-oxidation and reductive dehydroxylation were the initial activation reactions transforming caffeic acid into typical polyphenol structural units (protocatechuic acid and 4HBA). Adsorption of caffeic acid (53.3% and 28.6%) to the sludge occurred even at inhibitory concentrations. The EPS structure remained unchanged regardless of the increase in concentration of caffeic acid. Reasonable concentrations of caffeic acid could be co-digested with a similar readily digestible biomass with an expected reduction in biogas production. It is feasible to treat waste caffeic acid by anaerobic digestion and adsorption of its derivates, in order to reduce the contribution to global warming and to protect the environment.

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“…The permissible organic loading rate in the anaerobic process is also determined by the SRT. Speece (1996) indicated that HRT is a deciding factor in process design for complex and slowly degradable organic pollutants, whereas SRT is the controlling design parameter for easily degradable organics. For the slow-growing microorganisms such as methanogens, care must be exercised to prevent their washout from the reactor in order to achieve a longer SRT.…”

Section: Hydraulic Retention Time and Solids Retention Timementioning

confidence: 99%

“…However, industrial wastewater often lacks such micronutrients and trace metals, and requires external supplementation. Speece (1996) reported that failure of many anaerobic reactors prior to the 1970s may have been due to lack of understanding of the micronutrient requirement of methanogens.…”

Section: Specific Nutrients and Trace Metal Requirementsmentioning

confidence: 99%

Overview of Anaerobic Biotechnology

Khanal

2008

Anaerobic Biotechnology for Bioenergy Production

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Anaerobic biotechnology for industrial wastewater treatment

Cited by 819 publications

References 46 publications

Performance of Anaerobic Process on Toxicity Reduction During Treating Printing and Dyeing Wastewater

Performance of Anaerobic Process on Toxicity Reduction During Treating Printing and Dyeing Wastewater

Toxicity and biodegradability of caffeic acid in anaerobic digesting sludge

Overview of Anaerobic Biotechnology

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