| Title | Valorization of purple non-sulfur bacteria biomass from anaerobic treatment of fuel synthesis process wastewater to microbial protein: a means of enhancing food security in arid climates |
|---|---|
| ID_Doc | 13705 |
| Authors | Wada, OZ; Onwusogh, U; Vincent, AS; Mckay, G; Mackey, HR |
| Title | Valorization of purple non-sulfur bacteria biomass from anaerobic treatment of fuel synthesis process wastewater to microbial protein: a means of enhancing food security in arid climates |
| Year | 2023 |
| Published | Biomass Conversion And Biorefinery, 13, 18 |
| Abstract | The global shift from traditional fish farming to aquaculture has created an aquafeed production gap. Hence, the recovery of microbial protein from organic and nutrient-rich agro-industrial wastewaters has been identified as a suitable substitute. However, such waste streams are sparse in arid climes like the Middle East. Thus, this study explores the potential of single-cell protein recovery from a novel waste stream abundant in the region-fuel synthesis process water (FSPW), via anaerobic treatment with purple non-sulfur bacteria (PNSB). The feedstock (COD = 10.3 g/L) amended with essential nutrients was inoculated with a PNSB-dominated mixed culture in replicate 1-L batch fermenters. The wastewater characteristics and microbial biomass assays were performed using standard methods. Around two-thirds of the COD was degraded within 72 h at a rate of 2100 mg L(-1)d(-1), which reduced to about 710 mg L(-1)d(-1) by trial end. Also, total nitrogen levels (90 mg/L) were depleted within 72 h, indicating that nitrogen was a limiting nutrient. In addition, a peak biomass concentration of 1.11 +/- 0.037 g(vss)/L was obtained. Proximate analysis revealed that the biomass consisted of 35% protein, 32% lipid, 16% carbohydrate, 7% ash, 0.5% carotenoids, 0.6% bacteriochlorophylls, and 0.004% coenzyme Q10. Biomass protein's amino acid profile was comparable to soybean grain and meets dietary requirements for several aquatic livestock. Metal analysis of the biomass and wastewater indicated that nutritionally undesirable metals were undetected. Results show that PNSB not only efficiently degrade FSPW's organic load but also upcycles the waste to valuable feed constituents, potentially creating a regional circular economy. |
Similar Articles
| ID | Score | Article |
|---|---|---|
7077
|
Wada, OZ; Vincent, A; McKay, G; Mackey, HR Converting Fuel-Synthesis Process Water to Aquaculture Feed by Purple Non-sulfur Bacteria(2023)Chemical Engineering & Technology, 46, 6 | |
| 13226
|
Wang, S; Zhang, CZ; Zhang, K; Zhang, L; Bi, R; Zhang, YX; Hu, ZL One-step bioremediation of hypersaline and nutrient-rich food industry process water with a domestic microbial community containing diatom Halamphora coffeaeformis(2024) | |
| 15269
|
Verbeeck, K; De Vrieze, J; Pikaar, I; Verstraete, W; Rabaey, K Assessing the potential for up-cycling recovered resources from anaerobic digestion through microbial protein production(2021)Microbial Biotechnology, 14, 3 | |
| 24930
|
Owsianiak, M; Pusateri, V; Zamalloa, C; de Gussem, E; Verstraete, W; Ryberg, M; Valverde-Pérez, B Performance of second-generation microbial protein used as aquaculture feed in relation to planetary boundaries(2022) | |
| 9314
|
Lee, SY; Stuckey, DC Separation and biosynthesis of value-added compounds from food-processing wastewater: Towards sustainable wastewater resource recovery(2022) | |
| 24490
|
Das, A; Das, S; Das, N; Pandey, P; Ingti, B; Panchenko, V; Bolshev, V; Kovalev, A; Pandey, P Advancements and Innovations in Harnessing Microbial Processes for Enhanced Biogas Production from Waste Materials(2023)Agriculture-Basel, 13, 9 | |
| 6896
|
Puyol, D; Batstone, D; Hülsen, T; Astals, S; Peces, M; Krömer, JO Resource Recovery from Wastewater by Biological Technologies: Opportunities, Challenges, and Prospects(2017) | |
| 15875
|
Racho, P; Pongampornnara, A Enhanced biogas production from modified tapioca starch wastewater(2020) | |
| 15559
|
Moretto, G; Russo, I; Bolzonella, D; Pavan, P; Majone, M; Valentino, F An urban biorefinery for food waste and biological sludge conversion into polyhydroxyalkanoates and biogas(2020) | |
| 26652
|
Allegue, LD; Puyol, D; Melero, JA Food waste valorization by purple phototrophic bacteria and anaerobic digestion after thermal hydrolysis(2020) |