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Sulfur-based denitrification treating regeneration water from ion exchange at high performance and low cost

(2018) BIORESOURCE TECHNOLOGY. 257. p.266-273
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Abstract
Autotrophic denitrification with sulfur is an underexplored alternative to heterotrophic denitrification to remove nitrate from wastewater poor in organics. The application on ion exchange regeneration water (19.4-32.1 mS cm(-1)) is novel. Three fixed bed reactors were tested at 15 degrees C for > 4 months, inoculated with activated sludge from sewage treatment. All were fast in start-up (< 10 days) with high performance (94 +/- 2% removal efficiency). pH control with NaOH rendered higher nitrate removal rates than limestone addition to the bed (211 +/- 13 vs. 102 +/- 13 mg N L-1 d(-1)), related to higher pH (6.64 vs. 6.24) and sulfur surface area. Bacterial communities were strongly enriched in Sulfurimonas (63-67%) and Thiobacillus (24-26%). In an economic comparison, sulfur-based denitrification ((sic)5.3 kg(-1) N) was 15% cheaper than methanol-based denitrification ((sic)6.22 kg(-1) N) and both treatments were opex dominated (85.9 vs. 86.5%). Overall, the technological and economic feasibility should boost further implementation of sulfurotrophic denitrification.
Keywords
IEX, Biological nitrogen removal, Capex, Opex, Neutralization, BIOLOGICAL NITROGEN REMOVAL, INDUSTRIAL WASTE-WATER, AUTOTROPHIC DENITRIFICATION, NITRATE REMOVAL, LIMESTONE, BACTERIA, REACTORS, KINETICS

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Chicago
Vandekerckhove, Tom, Kanae Kobayashi, Joery Janda, Sam Van Nevel, and Siegfried Vlaeminck. 2018. “Sulfur-based Denitrification Treating Regeneration Water from Ion Exchange at High Performance and Low Cost.” Bioresource Technology 257: 266–273.
APA
Vandekerckhove, T., Kobayashi, K., Janda, J., Van Nevel, S., & Vlaeminck, S. (2018). Sulfur-based denitrification treating regeneration water from ion exchange at high performance and low cost. BIORESOURCE TECHNOLOGY, 257, 266–273.
Vancouver
1.
Vandekerckhove T, Kobayashi K, Janda J, Van Nevel S, Vlaeminck S. Sulfur-based denitrification treating regeneration water from ion exchange at high performance and low cost. BIORESOURCE TECHNOLOGY. 2018;257:266–73.
MLA
Vandekerckhove, Tom, Kanae Kobayashi, Joery Janda, et al. “Sulfur-based Denitrification Treating Regeneration Water from Ion Exchange at High Performance and Low Cost.” BIORESOURCE TECHNOLOGY 257 (2018): 266–273. Print.
@article{8562241,
  abstract     = {Autotrophic denitrification with sulfur is an underexplored alternative to heterotrophic denitrification to remove nitrate from wastewater poor in organics. The application on ion exchange regeneration water (19.4-32.1 mS cm(-1)) is novel. Three fixed bed reactors were tested at 15 degrees C for {\textrangle} 4 months, inoculated with activated sludge from sewage treatment. All were fast in start-up ({\textlangle} 10 days) with high performance (94 +/- 2\% removal efficiency). pH control with NaOH rendered higher nitrate removal rates than limestone addition to the bed (211 +/- 13 vs. 102 +/- 13 mg N L-1 d(-1)), related to higher pH (6.64 vs. 6.24) and sulfur surface area. Bacterial communities were strongly enriched in Sulfurimonas (63-67\%) and Thiobacillus (24-26\%). In an economic comparison, sulfur-based denitrification ((sic)5.3 kg(-1) N) was 15\% cheaper than methanol-based denitrification ((sic)6.22 kg(-1) N) and both treatments were opex dominated (85.9 vs. 86.5\%). Overall, the technological and economic feasibility should boost further implementation of sulfurotrophic denitrification.},
  author       = {Vandekerckhove, Tom and Kobayashi, Kanae and Janda, Joery and Van Nevel, Sam and Vlaeminck, Siegfried},
  issn         = {0960-8524},
  journal      = {BIORESOURCE TECHNOLOGY},
  keyword      = {IEX,Biological nitrogen removal,Capex,Opex,Neutralization,BIOLOGICAL NITROGEN REMOVAL,INDUSTRIAL WASTE-WATER,AUTOTROPHIC DENITRIFICATION,NITRATE REMOVAL,LIMESTONE,BACTERIA,REACTORS,KINETICS},
  language     = {eng},
  pages        = {266--273},
  title        = {Sulfur-based denitrification treating regeneration water from ion exchange at high performance and low cost},
  url          = {http://dx.doi.org/10.1016/j.biortech.2018.02.047},
  volume       = {257},
  year         = {2018},
}

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