Toxic organic micro-pollutants removal mechanisms in long-term operated membrane bioreactor treating municipal solid waste leachate

Boonyaroj, Varinthorn; Chiemchaisri, Chart; Chiemchaisri, Wilai; Theepharaksapan, Suthida; Yamamoto, Kazuo

doi:10.1016/j.biortech.2011.12.127

Cited by 116 publications

(33 citation statements)

References 20 publications

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“…Though the same 100% of the degradation efficiencies could be achieved at 30 and 40 mL inoculum size, the degradation rate was still higher with 40 mL than that of 30 mL, indicating that more bacterial cells can increase not only the efficiency of BPA degradation but also the degradation rate. This result is well agreed with previous studies, which showed a synergistic effect of the biomass amount on BPA degradation (Boonyaroj et al, 2012;Kang and Kondo, 2002a,b;Zhang et al, 2007).…”

supporting

confidence: 83%

Biodegradation and detoxification of bisphenol A with one newly-isolated strain Bacillus sp. GZB: Kinetics, mechanism and estrogenic transition

Wong

et al. 2012

Bioresource Technology

100

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supporting

confidence: 83%

Biodegradation and detoxification of bisphenol A with one newly-isolated strain Bacillus sp. GZB: Kinetics, mechanism and estrogenic transition

Wong

et al. 2012

Bioresource Technology

100

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“…The leachates contained high organic concentrations in terms of sCOD, sBOD and TOC as 43,025-58,441 mg/l, 32,330-39,370 mg/l, and 12,704-17,866 mg/l, respectively. Comparative concentration ranges of these contaminants to the fresh leachates from other landfills in Thailand were found to be similar [2,7]. Due to the high contents of organic matters, pretreatment of the leachate using an anoxic tank installed with inclined tubes for solid separation was set up to reduce the organic loading rate to MBR for lower membrane fouling.…”

Section: Resultsmentioning

confidence: 96%

“…Thus, this study aims to correlate the chemical characteristics and toxicity of solid waste leachates along the treatment units of the itMBR-RO system consisting of an anoxic tank with inclined tubes, a membrane bioreactor (MBR) and a reverse osmosis unit (RO) to clarify water quality for reusing water appropriately to its quality for the health risk aspect. Standard chemical parameters, toxic organic compounds and acute toxicity to living organisms such as Nile Tilapia (Oreochromis niloticus) [2,7] of leachate samples along the treatment processes were investigated in this study.…”

Section: Introductionmentioning

confidence: 99%

Chemical characterization in correlation to toxicity evaluation for water reuse of solid waste leachates in the itMBR-RO system

Polngam

Chiemchaisri

Kaewmanee

et al. 2014

J Mater Cycles Waste Manag

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This research investigates chemical characterization and toxicity evaluation of solid waste leachates along operating treatment units of the itMBR-RO (inclined tubes membrane bioreactor-reverse osmosis) system. Leachates from solid waste disposal sites contain high pollutant concentrations that pose acute toxicity effects on living organisms. Overall treatment processes could reduce COD, ammonia nitrogen and heavy metals by [99, [99 and [97 %, respectively. The xenobiotic compounds can be effectively removed (83.2-100 %) with the itMBR-RO system. 96 h of toxicity tests revealed that not only was NH 3 toxic to the Nile Tilapia (Oreochromis niloticus), there were other pollutants in the leachate synergy such as COD, nitrite and conductivity. Nitrite was the most potent pollutant in the MBR-treated leachates giving an acute toxic effect in combination with ammonia. In conclusion, the itMBR-RO system could completely eliminate acute toxicity of the solid waste leachates; although a few toxic organic compounds still remained in the RO permeate i.e. DEHP, hexadecanoic acid and phenol, 2, 4-bis-(tert-butyl).

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“…This has been confirmed by Muthukumaran et al (2011), who showed that fouling affects permeate flux more than pore size. Also, Boonyaroj et al (2012) found that BPA rejection by a membrane covered with a layer of pollutant was 68.89 %, whereas rejection by a clean membrane was only 23.01 %.…”

Section: Hydraulic Parameters Of the Mf And Nfmentioning

confidence: 99%

Removal of bisphenol A (BPA) from biologically treated wastewater by microfiltration and nanofiltration

Zielińska

Bułkowska

Cydzik‐Kwiatkowska

et al. 2016

Int. J. Environ. Sci. Technol.

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Bisphenol A (BPA) is an endocrine disruptor that is difficult to completely remove from wastewater by conventional biological methods. Increased post-treatment BPA removal with ceramic membranes is worth investigating because of these membranes' mechanical and chemical stability and lifespan. To determine the effectiveness of ceramic membranes for post-treatment of biologically treated BPA-contaminated wastewater, microfiltration (MF) and nanofiltration (NF) were conducted. Both processes removed BPA completely at an initial BPA concentration of 0.3 ± 0.14 mg/L. Increased concentration of 0.7 ± 0.29 mg/L decreased BPA removal. MF removed at least 24 % of BPA, presumably because BPA was adsorbed on particulate matter, which was retained by the membrane, or adsorbed on its surface. NF removed up to thrice more BPA. MF and NF completely removed suspended solids and 40-60 % COD. Filtration capacity decreased with time due to fouling but did not depend on initial BPA concentration. BPA concentrations in municipal wastewater are typically lower than the lowest concentration tested, where MF completely removed BPA. Hence, MF ceramic membranes appear a promising solution for post-treatment of BPA-containing wastewater. MF can be used at a much lower transmembrane pressure than NF, requiring less energy to pump wastewater through the membrane, thus reducing costs.

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Toxic organic micro-pollutants removal mechanisms in long-term operated membrane bioreactor treating municipal solid waste leachate

Cited by 116 publications

References 20 publications

Biodegradation and detoxification of bisphenol A with one newly-isolated strain Bacillus sp. GZB: Kinetics, mechanism and estrogenic transition

Biodegradation and detoxification of bisphenol A with one newly-isolated strain Bacillus sp. GZB: Kinetics, mechanism and estrogenic transition

Chemical characterization in correlation to toxicity evaluation for water reuse of solid waste leachates in the itMBR-RO system

Removal of bisphenol A (BPA) from biologically treated wastewater by microfiltration and nanofiltration

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