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1. Arsenic, iron and nitrate removal from groundwater by mixed bacterial culture and fate of arsenic-laden biosolids

Author:
Shakya, A. K.; Ghosh, P. K.
Source:
International journal of environmental science and technology 2019 v.16 no.10 pp. 5901-5916
ISSN:
1735-1472
Subject:
United States Environmental Protection Agency; anaerobic conditions; arsenates; arsenic; bacterial culture; bioreactors; biosolids; drinking water; environmental hazards; groundwater; guidelines; iron; leachates; leaching; nitrates; sulfates; toxicity
Abstract:
... Arsenic, iron and nitrate coexist in groundwater at a wide range of concentrations in various regions of the world. This study aims at investigating the concurrent arsenic and iron removal by combining the advantages of nitrate removal in a sulphidogenic bioreactor. A laboratory-scale suspended growth reactor was used to assess the performance of mixed bacterial culture at different arsenic, iron ...
DOI:
10.1007/s13762-018-1978-2

2. Ecophysiology and dynamics of nitrogen removal bacteria in a sequencing batch reactor during wastewater treatment start-up

Author:
Ziembińska-Buczyńska, A.; Banach-Wiśniewska, A.; Tomaszewski, M.; Poprawa, I.; Student, S.; Cema, G.
Source:
International journal of environmental science and technology 2019 v.16 no.8 pp. 4215-4222
ISSN:
1735-1472
Subject:
ammonia; anaerobic ammonium oxidation; bacterial growth; bioreactors; denitrification; denitrifying microorganisms; ecophysiology; fluorescence in situ hybridization; inoculum; nitrifying bacteria; nitrites; nitrogen; wastewater; wastewater treatment
Abstract:
... Nitrogen removal communities performing wastewater treatment consist of ammonia oxidisers, nitrite oxidisers, denitrifiers, and anammox bacteria, and the proportion and activity of particular microbial groups depend not only on the physiochemical parameters of the bioreactor, but also on the composition of the inoculum. Nitrifiers and denitrifiers usually dominate in conventional wastewater treatm ...
DOI:
10.1007/s13762-019-02275-w

3. Potential of industrial by-products and wastes from the Iberian Peninsula as carbon sources for sulphate-reducing bacteria

Author:
Carlier, J. D.; Alexandre, L. M.; Luís, A. T.; Costa, M. C.
Source:
International journal of environmental science and technology 2019 v.16 no.8 pp. 4719-4738
ISSN:
1735-1472
Subject:
acid mine drainage; alcohols; bioreactors; bioremediation; carbon; cellulose; chemical oxygen demand; industrial byproducts; lignin; olive mill wastewater; olive oil; organic acids and salts; oxygen; pyrite; sugars; sulfate-reducing bacteria; sulfates; Iberian Peninsula; Portugal; Spain
Abstract:
... Industrial by-products and wastes from Portugal and Spain were tested for the first time as carbon sources/electron donors for sulphate-reducing bacteria. Cultures in mineral medium supplemented with the tested substrates were monitored, and sulphate reduction efficiency is discussed in light of substrates compositions, dosages and corresponding chemical oxygen demand/[SO₄²⁻] ratios. The results r ...
DOI:
10.1007/s13762-018-02197-z

4. Simultaneous ammonia and organic matter removal from industrial wastewater in a continuous novel hybrid carrousel bioreactor

Author:
Velasco-Garduño, O.; Mendoza-Reséndiz, A.; Fajardo-Ortiz, C.; Beristain-Cardoso, R.
Source:
International journal of environmental science and technology 2019 v.16 no.7 pp. 3429-3436
ISSN:
1735-1472
Subject:
activated sludge; ammonia; biodegradability; bioreactors; biotransformation; energy; industrial wastewater; methane; nitrogen; organic matter; toxic substances; wastewater treatment; Mexico
Abstract:
... Nowadays, there are several wastewater treatment systems for treating industrial wastewater, but most of them require big areas for the construction, complex operation and high energy, elevating the costs. The goal of this study was to evaluate the effectiveness of the hybrid carrousel reactor, a multi-modular system, for coupling several biological processes in the same reaction unit, in order to ...
DOI:
10.1007/s13762-018-2017-z

5. Rhizospheric bacteria with potential to degrade landfill leachate

Author:
Leitner, V.; Malucelli, L. Centa; Pincerati, M. Regina; Maranho, L. Teresinha
Source:
International journal of environmental science and technology 2019 v.16 no.3 pp. 1581-1588
ISSN:
1735-1472
Subject:
Alternanthera philoxeroides; DNA; biomass; bioreactors; catalytic activity; environmental law; fermentation; freeze drying; landfill leachates; laws and regulations; macrophytes; pollution control; pollution load; rhizosphere; rhizosphere bacteria; wetlands
Abstract:
... Landfill leachate shows negative impacts to environment. Designed as a conventional treatment it may not, however, be able to reduce pollutant load to acceptable levels according to legislation and environmental laws. Therefore, complementary post-treatment is often necessary for that matter, where they cooperate with conventional one. For the present work, a rhizospheric bacterium was isolated fr ...
DOI:
10.1007/s13762-018-1763-2

6. Bioremoval of cadmium using a dual-chambered fluidized bed bioreactor: a biofilm-based approach

Author:
Itusha, A.; Mohanasrinivasan, V.
Source:
International journal of environmental science and technology 2018 v.15 no.12 pp. 2637-2646
ISSN:
1735-1472
Subject:
Aeromonas; adsorption; alginates; biofilm; bioreactors; cadmium; ecosystems; exopolysaccharides; fluidized beds; heavy metals; maximum tolerated concentration; phylogeny; quorum sensing; ribosomal DNA; ribosomal RNA; sequence analysis; sewage effluent; toxicity
Abstract:
... Cadmium is one of the toxic heavy metals which tend to accumulate in the biome posing threat to the living system. The present study investigated the cadmium removal efficiency by effective cadmium-resistant isolate in a novel dual-chambered horizontal continuous-flow bioreactor. Cadmium-resistant bacterial isolates were obtained from sewage effluent samples and were tested for their maximum toler ...
DOI:
10.1007/s13762-017-1492-y

7. Diversity of marine and brackish water nitrite-oxidizing consortia developed for activating nitrifying bioreactors in aquaculture

Author:
Preena, P. G.; Kumar, V. J. R.; Achuthan, C.; George, R.; Boobal, R.; Nair, R. R.; Singh, I. S. B.
Source:
International journal of environmental science and technology 2018 v.15 no.11 pp. 2399-2410
ISSN:
1735-1472
Subject:
Actinobacteria; Bacteroidetes; Proteobacteria; acclimation; ammonia; animal health; bioreactors; brackish water; clones; computer software; denitrifying microorganisms; enzymes; flora; genes; marine environment; nitrification; nitrites; oxidants; phylogeny; quantitative polymerase chain reaction; recirculating aquaculture systems; ribosomal DNA; ribosomal RNA; salinity
Abstract:
... Nitrite is a well-known toxicant in aquaculture, produced as intermediate in nitrification. Two nitrite-oxidizing bacterial consortia, one from marine environment and the other from brackish water, were developed by enrichment technique at National Centre for Aquatic Animal Health, for removal of nitrite from recirculating aquaculture systems. In the present study, bacterial diversity of the conso ...
DOI:
10.1007/s13762-017-1580-z

8. Advanced biotechnology in biorefinery: a new insight into municipal waste management to the production of high-value products

Author:
Haddadi, M.H.; Aiyelabegan, H.T.; Negahdari, B.
Source:
International journal of environmental science and technology 2018 v.15 no.3 pp. 675-686
ISSN:
1735-1472
Subject:
bacteria; biofuels; biomass; bioreactors; biorefining; byproducts; carbon dioxide; feedstocks; fungi; genetic engineering; global warming; greenhouse gas emissions; high-value products; metabolic engineering; microalgae; petroleum; pollution; waste management; wastes
Abstract:
... The development of new biotechnology methods can solve public concerns especially on global warming and environmental pollution. This can be achieved by using integrated biorefinery bioprocesses to introduce biomass as a very best renewable source, to replace petroleum and to develop new bio-based products in an industrial scale. Genetic engineering of organisms and improving bioreactors is curren ...
DOI:
10.1007/s13762-017-1424-x

9. Impact of activated sludge acclimation on the biodegradation of toluene absorbed in a hydrophobic ionic liquid

Author:
Rodriguez Castillo, A.S.; Guihéneuf, S.; Biard, P.-F.; Paquin, L.; Amrane, A.; Couvert, A.
Source:
International journal of environmental science and technology 2018 v.15 no.3 pp. 621-630
ISSN:
1735-1472
Subject:
acclimation; activated sludge; biodegradation; bioreactors; hydrophobicity; ionic liquids; toluene; volatile organic compounds
Abstract:
... Classical hydrophobic ionic liquids such as 3-butyl-1-methylimidazolium bis(trifluoroethylsulfonyl)imide or 3-butyl-1-methylimidazolium hexafluorophosphate application, as a non-aqueous liquid phase in a two-partitioning bioreactor to biodegrade hydrophobic volatile organic compounds by activated sludge, have been already reported in the literature, especially when the activated sludge was beforeh ...
DOI:
10.1007/s13762-017-1429-5

10. Competitive interference during the biodegradation of cresols

Author:
Surkatti, R.; El-Naas, M.H.
Source:
International journal of environmental science and technology 2018 v.15 no.2 pp. 301-308
ISSN:
1735-1472
Subject:
Pseudomonas putida; aquatic organisms; bacteria; biodegradation; bioreactors; gels; human health; industrial effluents; isomers; o-cresol; p-cresol; pH; phenol; polyvinyl alcohol; temperature; toxicity
Abstract:
... Phenol and its methylated derivatives, cresol isomers, are hazardous pollutants that are commonly present in various industrial effluents and known to have detrimental effect on aquatic life as well as human health, due to their toxic and carcinogenic nature. It is essential, therefore, to reduce the concentration of these contaminants in industrial effluent to acceptable levels prior to being dis ...
DOI:
10.1007/s13762-017-1383-2

11. Simultaneous sulfamethoxazole and trimethoprim removal and biofilm growth characteristics in attached growth bioreactor

Author:
Azimi, N.; Najafpour, G.D.; Hassani, A.H.; Borghei, S.M.
Source:
International journal of environmental science and technology 2018 v.15 no.2 pp. 415-426
ISSN:
1735-1472
Subject:
antibiotic resistance; antibiotics; bacteria; biofilm; biomass; bioreactors; chemical oxygen demand; fungi; organic matter; scanning electron microscopy; sewage; sulfamethoxazole; trimethoprim; wastewater
Abstract:
... Antibiotic contamination of aqueous environment due to pharmaceutical sewage may lead to development of antibiotic-resistant bacteria strain. In this research, elimination of antibiotics from synthetic wastewater was investigated. For this purpose, sulfamethoxazole and trimethoprim were treated by a pilot scale of net-like rotating biological contactor with three compartments, 48 plastic discs wit ...
DOI:
10.1007/s13762-017-1390-3

12. Continuous process study on simultaneous nitrification–denitrification of high ammoniacal nitrogen load wastewater in aerobic–anoxic sequencing bioreactors

Author:
Buha, D. M.; Atalia, K. R.; Shah, N. K.
Source:
International journal of environmental science and technology 2017 v.14 no.11 pp. 2451-2458
ISSN:
1735-1472
Subject:
ammonium; ammonium nitrogen; biomass; bioreactors; carbon; chemical oxygen demand; denitrification; denitrifying bacteria; nitrification; operating costs; oxygen; sodium acetate; sodium bicarbonate; tanks; wastewater
Abstract:
... The study focused on the feasibility of high NH₄ ⁺–N (400–600 mg/L) and COD load at two different hydraulic retention times (HRTs = 36 and 24 h) in two identical aerobic–anoxic sequencing bioreactors which were constructed in series in a single system using a specifically designed single biomass containing autotrophic nitrifying and heterotrophic denitrifying bacteria. Internal recirculation of sy ...
DOI:
10.1007/s13762-017-1333-z

13. Activated sludge acclimation for toluene and DEHP degradation in a two-phase partitioning bioreactor : Biodegradation of volatile organic compounds by activated sludge

Author:
Béchohra, I.; Le Menn, J. B.; Couvert, A.; Amrane, A.
Source:
International journal of environmental science and technology 2016 v.13 no.8 pp. 1883-1890
ISSN:
1735-1472
Subject:
acclimation; activated sludge; biodegradability; biodegradation; bioreactors; headspace analysis; hydrophobicity; nonaqueous phase liquids; phthalates; solvents; toluene; volatile organic compounds
Abstract:
... The effect of activated sludge acclimation on the biodegradation of toluene in the presence of a biodegradable non-aqueous phase liquid, di (2-ethylhexyl) phthalate (DEHP), in a two-phase partitioning bioreactor was characterized. The influence of the presence of DEHP, at a ratio of 0.1 % (volume ratio), and of the acclimation of activated sludge (AS) on the biodegradation of hydrophobic VOC was s ...
DOI:
10.1007/s13762-016-1019-y

14. Diesel degradation in soil catalyzed by the addition of a bioagent

Author:
Lin, Y.; Lay, J.-J.; Shieh, W. K.
Source:
International journal of environmental science and technology 2016 v.13 no.2 pp. 551-560
ISSN:
1735-1472
Subject:
Clostridium; Prevotella; Sporolactobacillus; acclimation; ambient temperature; bioreactors; diesel fuel; edaphic factors; free amino acids; hydrocarbons; hydrophobicity; metals; molasses; nitrogen; nutrition; petroleum; phosphorus; relative humidity; soil pH; soil pollution; soil water content; tap water
Abstract:
... The supernatant harvested from a mesophilic, molasses-fed, non-methanogenic bioreactor, which is rich in nitrogen, phosphorous, metals, free amino acids, Sporolactobacillus sp., Prevotella sp., and Clostridium sp., is diluted with tap water and tested as the bioagent to catalyze diesel degradation in soil. Outdoor experiments are performed under the following conditions to assess the effectiveness ...
DOI:
10.1007/s13762-015-0889-8

15. Simultaneous removal of nutrients in a novel anaerobic–anoxic/aerobic sequencing reactor: removal of nutrients in a novel reactor

Author:
Azhdarpoor, A.; Mohammadi, P.; Dehghani, M.
Source:
International journal of environmental science and technology 2016 v.13 no.2 pp. 543-550
ISSN:
1735-1472
Subject:
aeration; ammonium compounds; anaerobic conditions; bioreactors; chemical oxygen demand; human health; nitrogen; nitrogen content; nutrients; phosphates; phosphorus; water pollution
Abstract:
... Discharging wastewater contaminated with nitrogen and phosphorus compounds (nutrients) can be harmful to both human health and the environment. The present study investigated the efficiency of removing total nitrogen, total phosphate, and chemical oxygen demand using a novel reactor design. The reactor was an anaerobic–anoxic/aerobic sequencing batch reactor with continuous influent and discontinu ...
DOI:
10.1007/s13762-015-0871-5

16. Biodegradation of di-n-butyl phthalate in sequencing batch reactor bioaugmented with Micrococcus sp. and the bacterial community analysis

Author:
Hu, J.; Yang, Q.; Wang, J. L.
Source:
International journal of environmental science and technology 2015 v.12 no.9 pp. 2819-2828
ISSN:
1735-1472
Subject:
Micrococcus; activated sludge; bacterial communities; bioaugmentation; biodegradation; bioreactors; dibutyl phthalate; models; plasticizers; pollutants; restriction fragment length polymorphism; toxicity; wastewater treatment
Abstract:
... Di-n-butyl phthalate is widely used as plasticizer, which has been listed as priority pollutant due to its toxic and ubiquitous characteristics. It is difficult to remove by the conventional wastewater treatment processes. In this paper, the feasibility of using Micrococcus sp. to bioaugment a sequencing batch reactor for degrading di-n-butyl phthalate (DBP) was investigated. The terminal restrict ...
DOI:
10.1007/s13762-014-0683-z

17. Cold-water in situ dissolution of bamboo starch in a bioreactor: inducing forest recovery from an anthropogenic disturbance

Author:
Harris, M. A.; Koomson, C. K.
Source:
International journal of environmental science and technology 2015 v.12 no.8 pp. 2503-2510
ISSN:
1735-1472
Subject:
anthropogenic activities; bamboos; bioreactors; coatings; crop yield; deforestation; forest trees; forests; harvesting; leaves; longevity; polyurethanes; soaking; solar radiation; starch; submergence; tubers; Jamaica; South East Asia; Western Africa
Abstract:
... Using young forest trees as the source for timber, yam sticks have in recent years produced record rates of deforestation in Jamaica and, reportedly, in Western Africa and Southeast Asia. Regeneration periods for plants producing timber yam sticks (which decompose after 2 years) are approximately 10 years compared to 3–4 years for bamboo. But when used as a yam stick, bamboo decomposes even more r ...
DOI:
10.1007/s13762-014-0646-4

18. Insights into polyaromatic hydrocarbon biodegradation by Pseudomonas stutzeri CECT 930: operation at bioreactor scale and metabolic pathways

Author:
Moscoso, F.; Deive, F. J.; Longo, M. A.; Sanromán, M. A.
Source:
International journal of environmental science and technology 2015 v.12 no.4 pp. 1243-1252
ISSN:
1735-1472
Subject:
effluents; mineralization; chlorpyrifos; phenanthrenes; bioreactors; bioremediation; Pseudomonas stutzeri; models; metabolites; biochemical pathways; biodegradation; biotransformation; developed countries; gas chromatography-mass spectrometry
Abstract:
... Contamination of the environment with polycyclic aromatic hydrocarbons is one of the major problems facing the industrialized nations today. In this work, Pseudomonas stutzeri CET 930 was studied for the first time as bioremediation agent for the degradation of effluents containing phenanthrene, pyrene and benzanthracene, both individually and mixed. The promising results of degradation obtained a ...
DOI:
10.1007/s13762-014-0498-y

19. Determination of permissible industrial pollution load at a municipal wastewater treatment plant

Author:
Mikosz, J.
Source:
International journal of environmental science and technology 2015 v.12 no.3 pp. 827-836
ISSN:
1735-1472
Subject:
activated sludge; biomass; bioreactors; chemical oxygen demand; computer simulation; industrial effluents; municipal wastewater; temperature; wastewater treatment; Poland
Abstract:
... Industrial wastewater discharged to a municipal sewage system may often be a source of valuable organic substrate for biological processes at a municipal wastewater treatment plant (WWTP). In such situations, the pre-treatment of wastewater at an industrial plant should be minimized, in order to maintain the favourable structure of organic material in influent to a WWTP. A frequent problem is how ...
DOI:
10.1007/s13762-013-0472-0

20. Tower bio-vermifilter system for rural wastewater treatment: bench-scale, pilot-scale, and engineering applications

Author:
Nie, E.; Wang, D.; Yang, M.; Luo, X.; Fang, C.; Yang, X.; Su, D.; Zhou, L.; Zheng, Z.
Source:
International journal of environmental science and technology 2015 v.12 no.3 pp. 1053-1064
ISSN:
1735-1472
Subject:
ammonium nitrogen; basins; biofilters; bioreactors; carbon; chemical oxygen demand; earthworms; economic costs; gravel; nitrogen; phosphorus; pollutants; sewage treatment; soil; wastewater treatment; China
Abstract:
... This paper presents a systematic study of a novel tower bio-vermifilter system for rural wastewater treatment at three scales: bench-scale, pilot-scale, and engineering applications. First, three types of bioreactors were tested in the bench-scale experiments: earthworm bioreactor, soil filter, and one-stage bio-vermifilter. Experiments with the earthworm bioreactor and soil filter determined the ...
DOI:
10.1007/s13762-013-0479-6