Evaluation of the dynamics of microalgae population structure and process performance during piggery wastewater treatment in algal-bacterial photobioreactors

Abstract

15The dynamics of microalgae population during piggery wastewater (PWW) REs accounted for 26% in R3, 37% in R2, and 49% in R1 and R4. 27 28

Nutrient and heavy metal removal from piggery wastewater and CH4 enrichment in biogas based on microalgae cultivation technology under different initial inoculum concentration

“…to heavy metal contamination (Munoz & Guieysse, ). This result is consistent with the results of García's research (Garcia et al, ). The symbiotic system of bacteria and algae can effectively remove heavy metals, mainly because microalgae have higher tolerance to heavy metals than bacterial microorganisms, which can improve the removal of heavy metals in the system (Yang, Xu, Wang, Bao, & Zeng, ).…”

“…The maximum content of C, N, and P was found in C. vulgaris ‐activated sludge that were 50 ± 1%, 7.8 ± 0.3%, and 0.75 ± 0.06%, respectively (Figure ). These elemental biomass compositions were close to those reported by Garcia et al () during PWW treatment in a algal–bacterial photobioreactors (Garcia et al, ). Likewise, the C and N contents in the C. vulgaris ‐activated sludge biomass were higher than the results (42 ± 2%, 7 ± 1% and 1.3 ± 0.3%) reported by Posadas et al () during domestic wastewater treatment in a 15‐L algal–bacterial biofilm photobioreactor (Posadas et al, ).…”

Biostimulant Potential of Scenedesmus obliquus Grown in Brewery Wastewater

“…Wastewater remediation by microalgae is widely described as an efficient nutrient removal, cost-effective and sustainable process, which avoids secondary pollution by using the biomass produced for different applications such as biofuels, bioplastics, biofertilizers and including animal feed and aquaculture [1][2][3][4][5][6][7]. This strategy is a win-win process that benefits both parts because (i) wastewater treatment with microalgae has lower energy demand, GHG emissions and costs than conventional systems, whereas (ii) the utilization of wastewater as nutrients source allows the reduction of microalgae biomass production cost below 5 €/kg [6,8].…”

Recovery of Protein Concentrates From Microalgal Biomass Grown in Manure for Fish Feed and Valorization of the By-Products Through Anaerobic Digestion

“…One alternative to synthetic culture media is to use agro-industrial wastewater, which usually presents high N and P concentration (Riaño et al, 2012;Chisti, 2013;Hernández et al, 2013). Specifically, the use of microalgal for pig manure (PM) bioremediation has been widely studied, reaching high microalgal productivities in the range of 9-55 g volatile suspended solids /m −2 d −1 (Lundquist et al, 2010;Masojídek et al, 2011;Hernández et al, 2016) and removing organic matter, nutrients, pathogen and emerging pollutants (de Godos et al, 2009;Posadas et al, 2017;García et al, 2018).…”