Coking wastewater treatment using a magnetic porous ceramsite carrier

Cheng, Yue; Fan, Wenjing; Guo, Liwei

doi:10.1016/j.seppur.2014.04.030

Cited by 34 publications

(11 citation statements)

References 16 publications

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“…Also, the biological organisms become more active in the presence of magnetic field. This may be due to the increase in paramagnetic oxygen in water by the application of magnetic field which improves the oxidation and degradation rates (Cheng et al., 2014). It can be seen that the conductivity is more for the effluent after the ASPF process than that after the HSPF process which may be due to the impact of nZVI.…”

Section: Resultsmentioning

confidence: 99%

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Comparison in the performance of magnetic field–induced MBBR‐coupled with advanced oxidation processes for textile effluent treatment with cost estimation

Sosamony

Soloman

2020

Environmental Quality Mgmt

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Direct biological treatment of textile effluent is not amicable as its biodegradability index (BI) is low. This study has focused on the feasibility of improving the biodegradability by pretreating the effluent using advanced oxidation processes, namely homogeneous solar photo‐Fenton (HSPF) and advanced solar photo‐Fenton (ASPF) processes and subsequent treatment through moving bed biofilm reactor (MBBR) exposed with a magnetic field. In the ASPF process, biosynthesized nano zero‐valent iron in place of Fe2+ has been used. Enhancement in biodegradability after pretreatments has been confirmed by the BI, kinetic coefficients, and toxicity test. The satisfactory physical state of the sludge has been ensured by an improved sludge volume index of the pretreated effluents. The effluents after pretreatments have been undergone treatment through moving bed biofilm reactor (MBBR) after inducing the magnetic field and found that the treated effluent can be disposed of either into irrigation water or into inland waters conforming to the standards of effluent parameters. Carrier materials inoculated with predominant bacteria present in the textile sludge identified by the 16S rRNA method have been used in the MBBR. The parameters affecting the photo‐Fenton and MBBR treatment have been optimized using the Box–Behnken design in response surface methodology. The cost of the two integrated processes (HSPF+MBBR and ASPF+MBBR) has also been compared and it is found that the ASPF–MBBR integrated process proved slightly less expensive.

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Section: Resultsmentioning

confidence: 99%

“…Magnetic field introduced in the reactor improves physical as well as chemical properties of water particles (Agnieszka & Lidia, 2008; Liu et al., 2011). It has also the potential to affect the biological properties (Cheng, Fan, & Guo, 2014).…”

Section: Introductionmentioning

confidence: 99%

Comparison in the performance of magnetic field–induced MBBR‐coupled with advanced oxidation processes for textile effluent treatment with cost estimation

Sosamony

Soloman

2020

Environmental Quality Mgmt

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“…The treated wastewater then flowed into the sedimentation tank, while the supernatant solution flowed out of it from the top, but the suspended microbes were retained in the sedimentation tank. [37]. Lastly, the sludge settled and it was scooped from the bottom of the sedimentation tank.…”

Section: Reactor and Operationmentioning

confidence: 99%

Assessing the performance of modified waste cotton cloth (MWCC) installed in a biological contact reactor as a biofilm carrier used for domestic wastewater treatment

et al. 2019

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The current study examined the performance of modified waste cotton cloth (MWCC) in the removal of organic pollutants from domestic wastewater as an emerging technique for waste textile resource management and reuse. The MWCC biofilm carrier was self-made with discarded cotton cloths cut into smaller strips with 66 cm long and average weight of 2.4 g each. The surface of the non-modified waste cotton cloth (NM-WCC) was modified through the hydrosulphuric acid (H 2 SO 4) method to enhance the physical characteristics of the material such as hydrophilicity and biofilm attachment. The best filling rate of the carrier used for the experiment was 65% as determined by preliminary studies. Two self-made biological contact biofilm reactors: R1 (installed with NM-WCC) and R2 (fixed with MWCC), were used for the experiment. The experimental results showed that MWCC had higher removal efficacy of chemical oxygen demand, ammonia-nitrogen (NH 4 +-N) and total phosphorus (TP) at 98.34%, 85.44% and 60.20%, respectively. The hydraulic retention time decreased from 21 to 8 h on the 4th day. The scanning electron microscope was used to analyse the surface characteristics of the NM-WCC and MWCC. The water-holding capacity of the biofilm carriers was determined through the static immersion method and ASTM D1117-80 guiding principles. The water contact angle was estimated through the static process by adapting Young's equation. The findings of this research could significantly contribute to the discovering of alternative innovative technological prospects of utilizing H 2 SO 4 MWCC as an effective biofilm carrier in domestic wastewater treatment.

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“…The technology of immobilized enzymes in porous ceramics is very mature; therefore, recent studies have been focusing more on immobilized bacteria in porous ceramics . The porous glass‐ceramics is also widely available and commonly used as medical materials, catalyst carriers as well as in wastewater treatment as filtration materials …”

Section: Introductionmentioning

confidence: 99%

Immobilizing nitrifying bacteria with Fe₂O₃‐CaO‐SiO₂ porous glass‐ceramics

Yang

Wang

et al. 2018

Int J of Appl Glass Sci

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Nitrifying bacteria immobilized on Fe 2 O 3 -CaO-SiO 2 porous glass-ceramics have extensive application prospects for wastewater treatment. To study the effect of the pore structure on the immobilization, Fe 2 O 3 -CaO-SiO 2 porous glass-ceramics with different porosities and pore sizes were prepared by sintering and the addition of pore-forming agent. The pore size and apparent porosity can be controlled by the pore-forming agent content and their sizes. Appropriate amount of the pore-forming agent can promote the apparent porosity and increase the amount of immobilized nitrifying bacteria. The excess of the pore-forming agent can cause the formation of the new crystalline phases and reduce the amount of immobilized nitrifying bacteria. In this study, we demonstrate that Fe 2 O 3 -CaO-SiO 2 porous glass-ceramics with 30% pore-forming agent exhibit a moderate apparent porosity and good immobilization. This combination has good application prospects in the field of ammonia treatment in wastewater. K E Y W O R D Smicroorganism immobilization, nitrifying bacteria, pore-forming agent, porous glass-ceramics

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Coking wastewater treatment using a magnetic porous ceramsite carrier

Cited by 34 publications

References 16 publications

Comparison in the performance of magnetic field–induced MBBR‐coupled with advanced oxidation processes for textile effluent treatment with cost estimation

Comparison in the performance of magnetic field–induced MBBR‐coupled with advanced oxidation processes for textile effluent treatment with cost estimation

Assessing the performance of modified waste cotton cloth (MWCC) installed in a biological contact reactor as a biofilm carrier used for domestic wastewater treatment

Immobilizing nitrifying bacteria with Fe₂O₃‐CaO‐SiO₂ porous glass‐ceramics

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Coking wastewater treatment using a magnetic porous ceramsite carrier

Cited by 34 publications

References 16 publications

Comparison in the performance of magnetic field–induced MBBR‐coupled with advanced oxidation processes for textile effluent treatment with cost estimation

Comparison in the performance of magnetic field–induced MBBR‐coupled with advanced oxidation processes for textile effluent treatment with cost estimation

Assessing the performance of modified waste cotton cloth (MWCC) installed in a biological contact reactor as a biofilm carrier used for domestic wastewater treatment

Immobilizing nitrifying bacteria with Fe2O3‐CaO‐SiO2 porous glass‐ceramics

Contact Info

Product

Resources

About

Immobilizing nitrifying bacteria with Fe₂O₃‐CaO‐SiO₂ porous glass‐ceramics