Removal of BTEX compounds by industrial sludge microbes in batch systems: statistical analysis of main and interaction effects

Jo, Mi-Seon; Rene, Eldon R.; Kim, Soo-Hong; Park, Hung‐Suck

doi:10.1007/s11274-007-9441-4

Cited by 10 publications

(4 citation statements)

References 14 publications

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“…These types of observations on main and interaction Cd removal (mg/g) Units -mg/L Fig. 3 Main effects plot for cadmium removal by P. chrysosporium in mixture effects between variables on a similar bioprocess have also been made recently by Jo et al [28] using such main and interaction plots.…”

Section: Statistical Analysis and Interpretation Of The Resultsmentioning

confidence: 76%

Biosorption of Lead, Copper, and Cadmium by Phanerochaete chrysosporium in Ternary Metal Mixtures: Statistical Analysis of Individual and Interaction Effects

Pakshirajan

Swaminathan

2009

Appl Biochem Biotechnol

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Biosorption of three divalent metals, viz., lead, copper, and cadmium in ternary aqueous mixtures was studied using Phanerochaete chrysosporium in batch shake flasks. The mixtures were prepared containing the metals at their either varying optimum or equal initial concentration combinations in aqueous solution of pH optimum to each of the metals. Following were the optimum initial concentration ranges of the metals in mixture: lead, 60-100 mg/L; copper, 20-60 mg/L; and cadmium, 5-15 mg/L. And, for varying these optimum concentration levels of the metals, a 2(3) full factorial design of experiments was employed. The results revealed that an increase in lead and cadmium concentrations helped in their better biosorption by the fungus, but an increase in initial copper concentration slightly diminished its removal. Statistical analysis of the results in the form of analysis of variance and Student t test gave a clear interpretation on the roles of both the individual metals and their interactions in the uptake of metals from mixture. Compared to the uptake of metals when presented individually, lead biosorption in mixture was found to be enhanced to a degree as high as 99%; on the other hand, copper and cadmium removals from mixtures were inhibited to the extent of 100% and 98%, respectively. However, this extent of inhibition or enhancement in the metal removals compared to the individual removals was less in mixtures containing all equal concentrations of the metals.

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Section: Statistical Analysis and Interpretation Of The Resultsmentioning

confidence: 76%

Biosorption of Lead, Copper, and Cadmium by Phanerochaete chrysosporium in Ternary Metal Mixtures: Statistical Analysis of Individual and Interaction Effects

Pakshirajan

Swaminathan

2009

Appl Biochem Biotechnol

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“…Several different substrate interactions have been observed in various studies on biodegradation of BTEX combinations by pure as well as mixed cultures (Arvin et al, 1989;Barbaro et al, 1992;Wang and Deshusses, 2007;Jo et al, 2008). The differences in the substrate interactions are mainly due to catabolic diversity of microbes in different environmental conditions.…”

Section: Substrate Interactions Among Btex During Anaerobic Degradationmentioning

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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“…BTEX has been a major research hotspot in the field of biological methods in recent years, and related studies are maturing. In industrial waste gas, BTEX is often emitted as a multicomponent mixture; thus, there are synergistic or antagonistic effects among the components in the biodegradation process [57,58]. Susant et al [59] discovered that the presence of xylene promoted the removal of toluene from the mixture.…”

Section: Analysis Of Research Trendsmentioning

confidence: 99%

Bibliometrics and Knowledge Map Analysis of Research Progress on Biological Treatments for Volatile Organic Compounds

Wang

Zhou²,

Yang

et al. 2023

Sustainability

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The emission of volatile organic compounds (VOCs) has resulted in increasingly severe harm to the environment and human health. In recent years, biological methods have become the preferred technology for VOC removal due to their environmental friendliness and economic advantages. Based on the theory of bibliometrics, this study analyzed research articles and reviews on biological methods for VOC removal published in the Web of Science Core Collection (WOSCC) database from 1966 to 2021. The knowledge map visualization software CiteSpace was utilized to analyze research progress in different countries, co-citation clustering, co-citation bursts, and keyword clustering in the literature data. The results indicated that early research on VOC biological treatment focused on the removal of odorous gases and single components of volatile organic waste gases. Subsequently, benzene contents (BTEX), hydrophobic VOCs, and multi-component VOCs have gradually become the focus of research. In recent years, improving VOC removal efficiency by studying packing materials and microbial communities has become an important research topic both domestically and internationally. Future research should focus on continuously improving the performance of reactors, developing novel reactors, and investigating technologies for treating complex and recalcitrant VOCs.

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Removal of BTEX compounds by industrial sludge microbes in batch systems: statistical analysis of main and interaction effects

Cited by 10 publications

References 14 publications

Biosorption of Lead, Copper, and Cadmium by Phanerochaete chrysosporium in Ternary Metal Mixtures: Statistical Analysis of Individual and Interaction Effects

Biosorption of Lead, Copper, and Cadmium by Phanerochaete chrysosporium in Ternary Metal Mixtures: Statistical Analysis of Individual and Interaction Effects

In situ Groundwater Remediation Using Enricher Reactor – Permeable Reactive Biobarrier

Bibliometrics and Knowledge Map Analysis of Research Progress on Biological Treatments for Volatile Organic Compounds

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