Nitrate and Nitrite Removal from Wastewater using Algae

Taziki, Mahboobeh; Ahmadzadeh, Hossein; Murry, Marcia A.; Lyon, Stephen

doi:10.2174/2211550104666150828193607

Cited by 85 publications

(43 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In this study the removal rate of N was between 75 and 85% from DLE total N load to the HRAPs. The removal rate for N was better than the removal rate for P, but similar to many studies in the literature (Taziki et al, 2015). At dairies and swine farms, for example, algae production/wastewater treatment systems can be used to remove N, P, and dissolved organic matter from barn flush water, while producing high protein biomass (Whitten et al, 2015).…”

Section: Pilot Scale Hrapssupporting

confidence: 79%

Microbial community structures in high rate algae ponds for bioconversion of agricultural wastes from livestock industry for feed production

Ibekwe

Murinda

Murry

et al. 2017

Science of The Total Environment

View full text Add to dashboard Cite

Dynamics of seasonal microbial community compositions in algae cultivation ponds are complex. However, there is very limited knowledge on bacterial communities that may play significant roles with algae in the bioconversion of manure nutrients to animal feed. In this study, water samples were collected during winter, spring, summer, and fall from the dairy lagoon effluent (DLE), high rate algae ponds (HRAP) that were fed with diluted DLE, and municipal waste water treatment plant (WWTP) effluent which was included as a comparison system for the analysis of total bacteria, Cyanobacteria, and microalgae communities using MiSeq Illumina sequencing targeting the 16S V4 rDNA region. The main objective was to examine dynamics in microbial community composition in the HRAP used for the production of algal biomass. DNA was extracted from the different sample types using three commercially available DNA extraction kits; MoBio Power water extraction kit, Zymo fungi/bacterial extraction kit, and MP Biomedicals FastDNA SPIN Kit. Permutational analysis of variance (PERMANOVA) using distance matrices on each variable showed significant differences (P=0.001) in beta-diversity based on sample source. Environmental variables such as hydraulic retention time (HRT; P<0.031), total N (P<0.002), total inorganic N (P<0.002), total P (P<0.002), alkalinity (P<0.002), pH (P<0.022), total suspended solid (TSS; P<0.003), and volatile suspended solids (VSS; P<0.002) significantly affected microbial communities in DLE, HRAP, and WWTP. Of the operational taxonomic units (OTUs) identified to phyla level, the dominant classes of bacteria identified were: Cyanobacteria, Alpha-, Beta-, Gamma-, Epsilon-, and Delta-proteobacteria, Bacteroidetes, Firmicutes, and Planctomycetes. Our data suggest that microbial communities were significantly affected in HRAP by different environmental variables, and care must be taken in extraction procedures when evaluating specific groups of microbial communities for specific functions.

show abstract

Section: Pilot Scale Hrapssupporting

confidence: 79%

Microbial community structures in high rate algae ponds for bioconversion of agricultural wastes from livestock industry for feed production

Ibekwe

Murinda

Murry

et al. 2017

Science of The Total Environment

View full text Add to dashboard Cite

show abstract

“…Nitrate is a primary nutrient for algae growth, and changing in initial nitrate concentration can influence algae growth and biomass production [107]. Nitrate depression results in algae producing high amounts of lipids or low amounts of biomass, and therefore, low metal ion biosorption [108].…”

Section: The Influence Of Other Factorsmentioning

confidence: 99%

Potential use of algae for heavy metal bioremediation, a critical review

Zeraatkar

Ahmadzadeh

Talebi

et al. 2016

Journal of Environmental Management

Self Cite

474

152

View full text Add to dashboard Cite

Algae have several industrial applications that can lower the cost of biofuel co-23 production. Among these co-production applications, environmental and wastewater 24 bioremediation are increasingly important. Heavy metal pollution and its implications 25 for public health and the environment have led to increased interest in developing 26 environmental biotechnology approaches. We review the potential for algal biosorption 27 and/or neutralization of the toxic effects of heavy metal ions, primarily focusing on their 28 cellular structure, pretreatment, modification, as well as potential application of genetic 29 engineering in biosorption performance. We evaluate pretreatment, immobilization, and 30 factors affecting biosorption capacity, such as initial metal ion concentration, biomass 31 concentration, initial pH, time, temperature, and interference of multi metal ions and 32 introduce molecular tools to develop engineered algal strains with higher biosorption 33 capacity and selectivity. We conclude that consideration of these parameters can lead to 34 the development of low-cost micro and macroalgae cultivation with high bioremediation 35 potential. 36 37

show abstract

“…Chlorella has developed an alternative adaptation strategy to acquire N from endosymbiotic relations with Paramecium bursaria in the natural environment and can use ammonium or amino acids but not nitrate or nitrite [ 47 ]. The preferential uptake of ammonia and the suppression of nitrate uptake by ammonia availability have been previously studied [ 48 , 49 , 50 ]. The low effect of nitrate on the growth rate could be due to the inactivation of nitrate reductase system by ammonia [ 48 , 49 , 50 , 51 ] or by the by-product of ammonia assimilation.…”

Section: Discussionmentioning

confidence: 99%

“…The preferential uptake of ammonia and the suppression of nitrate uptake by ammonia availability have been previously studied [ 48 , 49 , 50 ]. The low effect of nitrate on the growth rate could be due to the inactivation of nitrate reductase system by ammonia [ 48 , 49 , 50 , 51 ] or by the by-product of ammonia assimilation. Ammonia requires no enzymatic reduction for assimilation, but nitrate must be reduced to ammonia before the microalgae can assimilate it.…”

Section: Discussionmentioning

confidence: 99%

Kinetics Growth and Recovery of Valuable Nutrients from Selangor Peat Swamp and Pristine Forest Soils Using Different Extraction Methods as Potential Microalgae Growth Enhancers

et al. 2021

View full text Add to dashboard Cite

Soil extracts are useful nutrients to enhance the growth of microalgae. Therefore, the present study attempts for the use of virgin soils from Peninsular Malaysia as growth enhancer. Soils collected from Raja Musa Forest Reserve (RMFR) and Ayer Hitam Forest Reserve (AHFR) were treated using different extraction methods. The total dissolved nitrogen (TDN), total dissolved phosphorus (TDP), and dissolved organic carbon (DOC) concentrations in the autoclave methods were relatively higher than natural extraction with up to 132.0 mg N/L, 10.7 mg P/L, and 2629 mg C/L, respectively for RMFR. The results of TDN, TDP, and DOC suggested that the best extraction methods are autoclaved at 121 °C twice with increasing 87%, 84%, and 95%, respectively. Chlorella vulgaris TRG 4C dominated the growth at 121 °C twice extraction method in the RMRF and AHRF samples, with increasing 54.3% and 14%, respectively. The specific growth rate (µ) of both microalgae were relatively higher, 0.23 d−1 in the Ayer Hitam Soil. This extract served well as a microalgal growth promoter, reducing the cost and the needs for synthetic medium. Mass production of microalgae as aquatic feed will be attempted eventually. The high recovery rate of nutrients has a huge potential to serve as a growth promoter for microalgae.

show abstract

Nitrate and Nitrite Removal from Wastewater using Algae

Cited by 85 publications

References 12 publications

Microbial community structures in high rate algae ponds for bioconversion of agricultural wastes from livestock industry for feed production

Microbial community structures in high rate algae ponds for bioconversion of agricultural wastes from livestock industry for feed production

Potential use of algae for heavy metal bioremediation, a critical review

Kinetics Growth and Recovery of Valuable Nutrients from Selangor Peat Swamp and Pristine Forest Soils Using Different Extraction Methods as Potential Microalgae Growth Enhancers

Contact Info

Product

Resources

About