Dielectric barrier discharge cascaded with red mud waste to enhance NOx removal from diesel engine exhaust

Mohapatro, Sankarsan; Rajanikanth, BS

doi:10.1109/tdei.2012.6180259

Cited by 25 publications

(8 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This material has found a lot of applications as a catalyst and has been used for NO x abatement at higher operating temperatures [28], [29]. However, not much has been reported on the effect of red mud when cascaded with plasma discharge [24], [25]. Fig.…”

Section: Experimental Apparatusmentioning

confidence: 99%

“…One such technique is the use of electric discharge-based nonthermal plasma for NO x after treatment which has been studied quite extensively. The dielectric barrier discharge (DBD)-based nonthermal plasma has proved to be more suitable in terms of efficiency and energy consumption for NO x removal with and without the use of adsorbents/catalysts [11]- [24]. DBDs have the capability to produce large quantities of ions, free radicals, and energetic electrons at moderate gas temperatures and at atmospheric pressures.…”

Section: Introductionmentioning

confidence: 99%

“…Alternately, if a suitable adsorbent is placed after the plasma reactor, the combined plasma-adsorbent treatment of exhaust has a synergistic effect on NO x removal efficiency which neither plasma nor adsorbent can achieve in isolation. Recently, it has been observed that the adsorbents drawn from industrial waste byproducts have shown improved NO x removal from biodiesel exhaust when it is pretreated with plasma [23], [24]. This paper reports studies on industrial waste bauxite residue when used as an adsorbent in cascade with discharge plasma.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Discharge Plasma Combined With Bauxite Residue for Biodiesel Exhaust Cleaning: A Case Study on NO<italic>x</italic> Removal

Bhattacharyya

Rajanikanth

2015

IEEE Trans. Plasma Sci.

Self Cite

View full text Add to dashboard Cite

Experiments were conducted at laboratory level to treat the oxides of nitrogen (NO x ) present in raw and dry biodiesel exhaust utilizing a combination of electric discharge plasma and bauxite residue, i.e., red mud, an industrial waste byproduct from the aluminum industry. In this paper, the adsorption and a possible catalytic property of bauxite residue are discussed. Nonthermal plasma was generated using dielectric barrier discharges initiated by ac/repetitive pulse energization. The effect of corona electrodes on the plasma generation was qualitatively studied through NO x cleaning. The plasma reactor and adsorbent reactors were connected in cascade while treating the exhaust. The diesel generator, running on biodiesel fuel, was electrically loaded to study the effectiveness of the cascade system in cleaning the exhaust. Interestingly, under the laboratory conditions studied, plasma-bauxite residue combination has shown good synergistic properties and enhanced the NO x removal up to about 90%. With proper scaling up, the suggested cascade system may become an economically feasible option to treat the exhaust in larger installations. The results were discussed emphasizing the role of bauxite residue as an adsorbent and as a room temperature catalyst.

show abstract

Section: Experimental Apparatusmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Discharge Plasma Combined With Bauxite Residue for Biodiesel Exhaust Cleaning: A Case Study on NO<italic>x</italic> Removal

Bhattacharyya

Rajanikanth

2015

IEEE Trans. Plasma Sci.

Self Cite

View full text Add to dashboard Cite

show abstract

“…But its deNO x efficiency is still unsatisfactory due to its high alkalinity and low specific surface [13,14]. The previously reported deNO x efficiency of RM catalyst only achieved 31% and 40% for CO-SCR [15] and NH 3 -SCR [16], respectively. To increase the deNO x efficiency, our previous study [17] reported the preparation of RM-based powder catalyst with more than 80% NO conversion at high temperature above 350°C by a nitric acid-ball milling and neutralization-washing method.…”

Section: Introductionmentioning

confidence: 99%

The utilization of red mud waste as industrial honeycomb catalyst for selective catalytic reduction of NO

et al. 2019

View full text Add to dashboard Cite

As a new way for the high-value utilization of red mud (RM) waste, we proposed an improved approach to prepare the RM-based sludge/powder via the sulfuric acid hydrothermal dissolution and NH3 aqueous precipitation route and then the RM-based industrial-sized honeycomb (150 × 150 × 600 mm) was successfully produced by the extrusion moulding method in pilot scale. The synthesized RM-based powdery/honeycomb catalyst exhibited more than 80% deNOx activity and good durability of H2O and SO2 above 350°C. But the decline of NO conversion was also observed above 350°C, which was confirmed to result from the increased oxygenation of NH3 at high temperature. To improve the NO conversion at high temperature, NH3 was shunted and injected into the catalyst bed at two different places (entrance and centre) to facilitate its uniform distribution, which relieved the oxidation of NH3 and increased deNOx efficiency with 98% NO conversion at 400°C. This work explored the industrial application feasibility for the RM-based honeycomb catalyst as well as the possible solution to decrease the oxygenation of NH3 at high temperature, which presented a valuable reference for the further pilot tests of RM catalyst in industry.

show abstract

“…The electrical discharge technique appears to be promising in successfully treating the gaseous pollutants [5][6][7][8] and in particular, the dielectric barrier discharge reactors have been very effective in NOx abatement [9][10][11][12][13][14][15][16][17][18][19][20][21]. In the present study, two DBD reactors of different configurations, the pipe type reactor and the helical double ground reactor, have been used.…”

Section: Introductionmentioning

confidence: 99%

Biodiesel exhaust treatment with dielectric barrier discharges coupled with industrial waste byproducts

Bhattacharyya

Rajanikanth

2015

IEEE Trans. Dielect. Electr. Insul.

Self Cite

View full text Add to dashboard Cite

Biodiesel run engines are gaining popularity since the last few years as a viable alternative to conventional petro-diesel based engines. In biodiesel exhaust the content of volatile organic compounds, oil mist, and mass of particulate matter is considerably lower. However, the concentration of oxides of nitrogen (NOx) is relatively higher. In this paper the biodiesel exhaust from a stationary engine is treated under controlled laboratory conditions for removal of NOx using dielectric barrier discharge plasma in cascade with adsorbents prepared from abundantly available industrial waste byproducts like red mud and copper slag. Results were compared with gammaalumina, a commercial adsorbent. Two different dielectric barrier discharge (DBD) reactors were tested for their effectiveness under Repetitive pulses /AC energization. NOx removal as high as 80% was achieved with pulse energized reactors when cascaded with red mud as adsorbent.

show abstract

Dielectric barrier discharge cascaded with red mud waste to enhance NO_x removal from diesel engine exhaust

Cited by 25 publications

References 30 publications

Discharge Plasma Combined With Bauxite Residue for Biodiesel Exhaust Cleaning: A Case Study on NO<sub><italic>x</italic></sub> Removal

Discharge Plasma Combined With Bauxite Residue for Biodiesel Exhaust Cleaning: A Case Study on NO<sub><italic>x</italic></sub> Removal

The utilization of red mud waste as industrial honeycomb catalyst for selective catalytic reduction of NO

Biodiesel exhaust treatment with dielectric barrier discharges coupled with industrial waste byproducts

Contact Info

Product

Resources

About