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Nouhou Moussa AW, Sawadogo B, Konate Y, Thianhoun B, Sidibe SDS, Heran M. Influence of Solid Retention Time on Membrane Fouling and Biogas Recovery in Anerobic Membrane Bioreactor Treating Sugarcane Industry Wastewater in Sahelian Climate. MEMBRANES 2023; 13:710. [PMID: 37623771 PMCID: PMC10456350 DOI: 10.3390/membranes13080710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 05/20/2023] [Accepted: 06/04/2023] [Indexed: 08/26/2023]
Abstract
Sugarcane industries produce wastewater loaded with various pollutants. For reuse of treated wastewater and valorization of biogas in a Sahelian climatic context, the performance of an anaerobic membrane bioreactor was studied for two solid retention times (40 days and infinity). The pilot was fed with real wastewater from a sugarcane operation with an organic load ranging from 15 to 22 gCOD/L/d for 353 days. The temperature in the reactor was maintained at 35 °C. Acclimatization was the first stage during which suspended solids (SS) and volatile suspended solids (VSS) evolved from 9 to 13 g/L and from 5 to 10 g/L respectively, with a VSS/SS ratio of about 80%. While operating the pilot at a solid retention time (SRT) of 40 days, the chemical oxygen demand (COD) removal efficiency reached 85%, and the (VSS)/(TSS) ratio was 94% in the reactor. At infinity solid retention time, these values were 96% and 80%, respectively. The 40-day solid retention time resulted in a change in transmembrane pressure (TMP) from 0.0812 to 2.18 bar, with a maximum methane production of 0.21 L/gCOD removed. These values are lower than those observed at an infinite solid retention time, at which the maximum methane production of 0.29 L/gCOD was achieved, with a corresponding transmembrane pressure variation of up to 3.1 bar. At a shorter solid retention time, the fouling seemed to decrease with biogas production. However, we note interesting retention rates of over 95% for turbidity.
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Affiliation(s)
- Abdoul Wahab Nouhou Moussa
- Laboratoire Eaux Hydro-Systèmes et Agriculture (LEHSA), Institut International d’Ingénierie de l’Eau et de l’Environnement (2iE), Rue de la science, Ouagadougou 01 BP 594, Burkina Faso; (B.S.); (Y.K.); (B.T.)
| | - Boukary Sawadogo
- Laboratoire Eaux Hydro-Systèmes et Agriculture (LEHSA), Institut International d’Ingénierie de l’Eau et de l’Environnement (2iE), Rue de la science, Ouagadougou 01 BP 594, Burkina Faso; (B.S.); (Y.K.); (B.T.)
| | - Yacouba Konate
- Laboratoire Eaux Hydro-Systèmes et Agriculture (LEHSA), Institut International d’Ingénierie de l’Eau et de l’Environnement (2iE), Rue de la science, Ouagadougou 01 BP 594, Burkina Faso; (B.S.); (Y.K.); (B.T.)
| | - Brony Thianhoun
- Laboratoire Eaux Hydro-Systèmes et Agriculture (LEHSA), Institut International d’Ingénierie de l’Eau et de l’Environnement (2iE), Rue de la science, Ouagadougou 01 BP 594, Burkina Faso; (B.S.); (Y.K.); (B.T.)
| | - Sayon dit Sadio Sidibe
- Laboratoire Energies Renouvelable et Efficacité Energétique (LaBEREE), Institut International d’Ingénierie de l’Eau et de l’Environnement (2iE), Rue de la science, Ouagadougou 01 BP 194, Burkina Faso;
| | - Marc Heran
- Institut Européen des Membranes (IEM), UMR-5635, Université de Montpellier, CNRS, Place Eugène Bataillon, CEDEX 5, 34095 Montpellier, France;
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Andreadelli A, Petrakis S, Tsoureki A, Tsiolas G, Michailidou S, Baltzopoulou P, van Merkestein R, Hodgson P, Sceats M, Karagiannakis G, Makris AM. Effects of Magnesium Oxide and Magnesium Hydroxide Microparticle Foliar Treatment on Tomato PR Gene Expression and Leaf Microbiome. Microorganisms 2021; 9:microorganisms9061217. [PMID: 34199815 PMCID: PMC8228823 DOI: 10.3390/microorganisms9061217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 05/31/2021] [Accepted: 06/02/2021] [Indexed: 11/20/2022] Open
Abstract
Recently, metal oxides and magnesium hydroxide nanoparticles (NPs) with high surface-to-volume ratios were shown to possess antibacterial properties with applications in biomedicine and agriculture. To assess recent observations from field trials on tomatoes showing resistance to pathogen attacks, porous micron-scale particles composed of nano-grains of MgO were hydrated and sprayed on the leaves of healthy tomato (Solanum lycopersicum) plants in a 20-day program. The results showed that the spray induced (a) a modest and selective stress gene response that was consistent with the absence of phytotoxicity and the production of salicylic acid as a signalling response to pathogens; (b) a shift of the phylloplane microbiota from near 100% dominance by Gram (−) bacteria, leaving extremophiles and cyanobacteria to cover the void; and (c) a response of the fungal leaf phylloplane that showed that the leaf epiphytome was unchanged but the fungal load was reduced by about 70%. The direct microbiome changes together with the low level priming of the plant’s immune system may explain the previously observed resistance to pathogen assaults in field tomato plants sprayed with the same hydrated porous micron-scale particles.
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Affiliation(s)
- Aggeliki Andreadelli
- Institute of Applied Biosciences, Centre for Research & Technology, Hellas (CERTH), 570 01 Thessaloniki, Greece; (A.A.); (S.P.); (A.T.); (G.T.); (S.M.)
| | - Spyros Petrakis
- Institute of Applied Biosciences, Centre for Research & Technology, Hellas (CERTH), 570 01 Thessaloniki, Greece; (A.A.); (S.P.); (A.T.); (G.T.); (S.M.)
| | - Antiopi Tsoureki
- Institute of Applied Biosciences, Centre for Research & Technology, Hellas (CERTH), 570 01 Thessaloniki, Greece; (A.A.); (S.P.); (A.T.); (G.T.); (S.M.)
| | - George Tsiolas
- Institute of Applied Biosciences, Centre for Research & Technology, Hellas (CERTH), 570 01 Thessaloniki, Greece; (A.A.); (S.P.); (A.T.); (G.T.); (S.M.)
| | - Sofia Michailidou
- Institute of Applied Biosciences, Centre for Research & Technology, Hellas (CERTH), 570 01 Thessaloniki, Greece; (A.A.); (S.P.); (A.T.); (G.T.); (S.M.)
| | - Penelope Baltzopoulou
- Chemical Process & Energy Resources Institute, Centre for Research & Technology, Hellas (CERTH), 570 01 Thessaloniki, Greece; (P.B.); (G.K.)
| | | | - Philip Hodgson
- Calix Limited, Pymble, NSW 2073, Australia; (R.v.M.); (P.H.); (M.S.)
| | - Mark Sceats
- Calix Limited, Pymble, NSW 2073, Australia; (R.v.M.); (P.H.); (M.S.)
| | - George Karagiannakis
- Chemical Process & Energy Resources Institute, Centre for Research & Technology, Hellas (CERTH), 570 01 Thessaloniki, Greece; (P.B.); (G.K.)
| | - Antonios M. Makris
- Institute of Applied Biosciences, Centre for Research & Technology, Hellas (CERTH), 570 01 Thessaloniki, Greece; (A.A.); (S.P.); (A.T.); (G.T.); (S.M.)
- Correspondence: ; Tel.: +30-2311-257-541
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