Evaluation of Moringa oleífera in the water treatment with high turbidity and organic

[ES] El presente trabajo evalúa la eficiencia del uso de la Moringa oleífera (M.O) como coagulante en el tratamiento de aguas de alta turbidez y carga orgánica. Inicialmente los resultados demostraron que el coagulante a base de las semillas de M.O pre-tratada con cloruro de sodio (NaCl 1.0 N) y usando una dosis de 0.74 g/L, alcanza remociones de 87.3% y 88.8% para turbidez y sólidos suspendidos totales (SST), asimismo valores de 25.9% y 26.3% para DBO5 y DQO respectivamente. En una segunda etapa, el coagulante, sometido a extracción Soxhlet y dosis de 0.5 g/L, muestran máximas eficiencia de 97.8%, 89.99%, 51.4% y 35.3% en la remoción de turbidez, SST, DQO y DBO5. Las más altas eficiencias obtenidas fueron alcanzadas mediante la previa extracción de aceites, grasas y otros componentes de la semilla de M.O. Estudios relacionados al reaprovechamiento de sub-productos de la extracción deben ser realizados.[EN] In this study, the removal efficiency of Moringa Oleifera (M.O) seed as coagulant in the treatment of highly loaded wastewater in terms of turbidity and organic matter was evaluated. Initially the results showed removals of 87.3% and 88.8% for turbidity and total suspended solids (TSS) and 25.9% and 26.3% for BOD5 and COD respectively, when the seeds of M.O were pre-treated with sodium chloride (NaCl 1.0 N) and used as coagulant at a dose of 0.74 g/L. In a second stage, the natural coagulants previously subjected to Soxhlet extraction were compared, the results showed maximum efficiency with 0.5 g/L of the seed of M.O, with values of 97.8%, 9.99%, 51.4% and 35.3% in the removal of turbidity, TSS, COD and BOD5, respectively. The highest efficiencies were achieved through the prior extraction of oils, fats and other components of the M.O seed. Studies related to the reuse of extraction by-products should be performed.Mejía Carrillo, PW.; Urquia Collantes, K.; Cabello Torres, RJ.; Valdiviezo Gonzales, LG. (2020). Evaluación de la Moringa oleifera en el tratamiento de aguas con alta turbidez y carga orgánica. Ingeniería del agua. 24(2):119-127. https://doi.org/10.4995/ia.2020.12274OJS119127242Adinolfi, M., Corsaro, M. M., Lanzetta, R., Parrilli, M., Folkard, G., Grant, W., Sutherland, J. 1994. Composition of the coagulant polysaccharide fraction from Strychnos potatorum seeds. Carbohydrate research, 263(1), 103-110. https://doi.org/10.1016/0008-6215(94)00149-9Amran, A., Syamimi Zaidi, N., Muda, K., Wai Loan, L. 2018. Effectiveness of Natural Coagulant in Coagulation Process: A Review. International Journal of Engineering & Technology, 7(3.9), 34. https://doi.org/10.14419/ijet.v7i3.9.15269Bongiovani, M. C., Camacho, F. P., Nishi, L., Coldebella, P. F., Valverde, K. C., Vieira, A. M., Bergamasco, R. 2014. Improvement of the coagulation/flocculation process using a combination of Moringa oleifera lam with anionic polymer in water treatment. Environmental Technology. 35(17), 2227-2236. https://doi.org/10.1080/09593330.2014.899398Camacho, F. P., Sousa, V. S., Bergamasco, R., Teixeira, M. R. 2017. The use of Moringa oleifera as a natural coagulant in surface water treatment. Chemical Engineering Journal. 313(1), 226-237. https://doi.org/10.1016/j.cej.2016.12.031Crapper, D. R., Krishnan, S. S., Dalton, A. J. 1973. Brain aluminum distribution in Alzheimer's disease and experimental neurofibrillary degeneration. Science, 180(4085), 511-513. https://doi.org/10.1126/science.180.4085.511Eman, N. A., Tan, C. S., Makky, E. A. 2014. Impact of Moringa oleifera Cake Residue Application on Waste Water Treatment: A Case Study. Journal of Water Resource and Protection, 6(7), 677-687. https://doi.org/10.4236/jwarp.2014.67065Fersi, C., Gamra, B., Bozrati, H., Gorgi, C., Irmani, A. 2018. Characterizing the performance of coagulation-flocculation using natural coagulants as pretreatment of tannery wastewater. Journal of Materials and Environmental Sciences, 9(8), 2379-2386. Obtenido de https://www.jmaterenvironsci.com/Document/vol9/vol9_N8/262-JMES-4022-Fersi.pdfFreitas, T. K. F. S., Almeida, C. A., Manholer, D. D., Geraldino, H. C. L., De Sousa, M. T. F., Garcia, J. C. 2018. Review of Utilization Plant-Based Coagulants as Alternatives to Textile Wastewater Treatment. In: Textile Science and Clothing Technology (MUTHU, S. ed.) Detox Fashion, Springer, Singapore, 27-47. https://doi.org/10.1007/978-981-10-4780-0_2Garcia-Fayos, B., Arnal, J.M.., Sancho, M., Rodrigo, I. 2016. Moringa oleifera for drinking water treatment: influence of the solvent and method used in oilextraction on the coagulant efficiency of the seed extract. Desalination and water treatment, 57(48-49), 23397-23404. https://doi.org/10.1080/19443994.2015.1137144Keogh, M. B., Elmusharaf, K., Borde, P., McGuigan, K.G. 2017. Evaluation of the natural coagulant Moringa oleifera as a pretreatment for SODIS in contaminated turbid water. Solar Energy, 158, 448-454. https://doi.org/10.1016/j.solener.2017.10.010Kristianto, H. (2017). The Potency of Indonesia Native Plants as Natural Coagulant: a Mini Review. Water Conservation Science and Engineering, 2(2), 51-60. https://doi.org/10.1007/s41101-017-0024-4Kumar, V., Othman, N., Asharuddin, S. 2017. Applications of Natural Coagulants to Treat Wastewater − A Review. MATEC web conferences, 103(06016), 1-9. https://doi.org/10.1051/matecconf/201710306016Kwaambwa, H. M., Rennie, A. R. 2011. Interactions of surfactants with a water treatment protein from Moringa oleifera seeds in solution studied by zeta-potential and light scattering measurements. Biopolymers, 97(4), 209-218. https://doi.org/10.1002/bip.22014Lee, C. S., Robinson, J., Chong, M. F. 2014. A review on application of flocculants in wastewater treatment. Process Safety and Environmental Protection, 92, 489-508. https://doi.org/10.1016/j.psep.2014.04.010Lédo, P. G., Lima, R. F., Paulo, J. B., Duarte, M. A. 2009. Estudio Comparativo de Sulfato de Aluminio y Semillas de Moringa oleifera para la Depuración de Aguas con Baja Turbiedad. Información Tecnológica, 20(5), 3-12. https://doi.org/10.4067/S0718-07642009000500002Liew, A. G., Noor, J. M., Muyibi, S.A., Fugara, A. M., Muhammed, T. A., Iyuke, S. E. 2006. Surface water clarification using M. oleifera seeds. International Journal of Environmental Studies, 63(2), 211-219. https://doi.org/10.1080/00207230500117670Macías, M. R., Domínguez, Y. D., Y., Muñoz, S.R., Alvarez, B.G., B., Santana E, F., García, D.T. 2017. Empleo de semillas de Moringa oleifera en el tratamiento de residuales líquidos. Ingeniería Hidráulica y Ambiental, 38(2), 87-101. Obtenido de http://scielo.sld.cu/scielo.php?script=sci_arttext&pid=S1680-03382017000200007&lng=es&tlng=es.Matilainen, A., Vepsäläinen, M., Sillanpää, M. 2010. Natural organic matter removal by coagulation during drinking water treatment: a review. Advances in Colloid and Interface Science, 159(2), 189-197. https://doi.org/10.1016/j.cis.2010.06.007MVCS. 2006. Reglamento Nacional de edificaciones, DS N° 011-2006- VIVIENDA: Ministerio de Vivienda Construcción y Saneamiento. Obtenido de http://www3.vivienda.gob.pe/Direcciones/Documentos/RNE_Actualizado_Solo_Saneamiento.pdfNdabigengesere, A., Narasiah, K. S. 1998. Quality of Water Treated by Coagulation Using Moringa oleifera Seeds. Water Research: 32(3), 781-791. https://doi.org/10.1016/S0043-1354(97)00295-9Nkurunziza, T., Nduwayezu, J. B., Banadda, E. N., Nhapi, I. 2009. The effect of turbidity levels and Moringa oleifera concentration on the effectiveness of coagulation in water treatment. Water Science & Technology, 59(8), 1551-1558. https://doi.org/10.2166/wst.2009.155Okuda, T., Baes, A. U., Nishijima, W., Okada, M. 1999. Improvement of extraction method of coagulation active components from Moringa oleifera seed. Water Research, 33(15), 3373-3378. https://doi.org/10.1016/S0043-1354(99)00046-9Petersen, H. H., Petersen, T. B., Enemark, H. L., Olsen, A., Dalsgaard, A. 2016. Removal of Cryptosporidium parvum oocysts in low quality water using Moringa oleifera seed extract as coagulant. Food and Waterborne Parasitology, 3, 1-8. https://doi.org/10.1016/j.fawpar.2016.03.002Pritchard, M., Craven, T., Mkandawire, T., Edmondson, A. S., O'neill, J. G. 2010. A comparison between Moringa oleifera and chemical coagulants in the purification of drinking water - An alternative sustainable solution for developing countries. Physics and Chemistry of the Earth, Parts A/B/C, 35(13-14), 798-805. https://doi.org/10.1016/j.pce.2010.07.014Sengul, A. B., Ersan, G., Tufekci, N. 2018. Removal of intra and extracellular microcystin by submerged ultrafiltration (UF) membrane combined with coagulation/flocculation and powdered activated carbon (PAC) adsorption. Journal of Hazard Materials. 343, 29-35, https://doi.org/10.1016/j.jhazmat.2017.09.018SUNASS. 2008. Estudio Diagnostico situacional de los sistemas de tratamiento de aguas residuales en las EPS del Perú y Propuestas de solución: Superintendencia Nacional de Servicios de Saneamiento. Obtenido de https://www.sunass.gob.pe/doc/Publicaciones/libro_ptar_gtz_sunass.pdfSUNASS. 2015. Diagnóstico de las plantas de tratamiento de aguas residuales en el ámbito de operación de las entidades prestadoras de servicios de saneamiento: Superintendencia Nacional de Servicios de Saneamiento Obtenido de https://www.sunass.gob.pe/doc/Publicaciones/libro_ptar_gtz_sunass.pdfChoumane, F.Z., Benguella, B., Maachou, B., Saadi, N. 2017. Valorisation of a bioflocculant and hydroxyapatites as coagulationflocculation adjuvants in wastewater treatment of the steppe in the wilaya of Saida (Algeria). Ecological Engineering, 107, 152-159. https://doi.org/10.1016/j.ecoleng.2017.07.01

Comparative Antimicrobial Activity of Granulysin against Bacterial Biothreat Agents

Granulysin is a cationic protein produced by human T cells and natural killer cells that can kill bacterial pathogens through disruption of microbial membrane integrity. Herein we demonstrate antimicrobial activity of the granulysin peptide derived from the active site against Bacillus anthracis, Yersinia pestis, Francisella tularensis, and Burkholderia mallei, and show pathogen-specific differences in granulysin peptide effects. The susceptibility of Y. pestis to granulysin is temperature dependent, being less susceptible when grown at the flea arthropod vector temperature (26°C) than when grown at human body temperature. These studies suggest that augmentation of granulysin expression by cytotoxic lymphocytes, or therapeutic application of granulysin peptides, could constitute important strategies for protection against select agent bacterial pathogens. Investigations of the microbial surface molecules that determine susceptibility to granulysin may identify important mechanisms that contribute to pathogenesis

A Spectroscopic Study of a Large Sample of Wolf-Rayet Galaxies

We analyze long-slit spectral observations of 39 Wolf-Rayet (WR) galaxies with heavy element mass fraction ranging over 2 orders of magnitude, from Zsun/50 to 2Zsun. Nearly all galaxies in our sample show broad WR emission in the blue region of the spectrum (the blue bump) consisting of an unresolved blend of N III 4640, C III 4650, C IV 4658 and He II 4686 emission lines. Broad C IV 5808 emission (the red bump) is detected in 30 galaxies. Additionally, weaker WR emission lines are identified, most often the N III 4512 and Si III 4565 lines, which have very rarely or never been seen and discussed before in WR galaxies. These emission features are characteristic of WN7-WN8 and WN9-WN11 stars respectively. We derive the numbers of early WC (WCE) and late WN (WNL) stars from the luminosities of the red and blue bumps, and the number of O stars from the luminosity of the Hbeta emission line. Additionally, we propose a new technique for deriving the numbers of WNL stars from the N III 4512 and Si III 4565 emission lines. This technique is potentially more precise than the blue bump method because it does not suffer from contamination of WCE and early WN (WNE) stars and nebular gaseous emission. The N(WR)/N(O+WR) ratio decreases with decreasing metallicity, in agreement with predictions of evolutionary synthesis models. The N(WC)/N(WN) ratios and the equivalent widths of the blue bump EW(4650) and of the red bump EW(5808) derived from observations are also in satisfactory agreement with theoretical predictions.Comment: 49 pages, 9 figures, to appear in Astrophys.

Desenlaces neonatales adversos en gestantes con preeclampsia severa y sus factores asociados

Objetivo: Analizar cuáles son los desenlaces neonatales adversos que con mayor frecuencia afectan a los recién nacidos de gestantes diagnosticadas con preeclampsia severa y determinar cuáles son sus factores asociados. Material y métodos: Siguiendo un diseño de cohortes se analizaron retrospectivamente todos los casos de preeclampsia severa diagnosticados en el Instituto Nacional Materno Perinatal durante el periodo 2016-2017. Resultados: Se analizaron un total de 942 casos de preeclampsia severa (28,5 ± 7,6 años de edad). El 100% de los gestantes dio a luz a producto vivo con 36,2 ± 3,2 semanas de gestación (rango: 24-41). Los desenlaces neonatales adversos más frecuentes fueron parto pretérmino (incidencia [I]=48,7%; intervalo de confianza al 95% [IC 95%]: 45,4% a 51,9%), talla baja para edad gestacional (I=33,7%; IC 95%: 30,6% a 36,7%), pequeño para la edad gestacional (I=25,6%; IC 95%: 22,9% a 28,5%) y Apgar 1-5´ bajo al nacer (I=12,1%; IC 95%: 10,0% a 14,2%). Las gestantes adolescentes tuvieron un menor riesgo de parto prematuro (IRR =0,70; IC 95%: 0,57 a 0,85) y un puntaje Apgar 1-5´ bajo al nacer (IRR =0,39; IC 95%: 0,21 a 0,72) que las adultas. Conclusión: La incidencia de desenlaces neonatales adversos en gestantes diagnosticadas con preeclampsia severa es alta, siendo los más frecuentes prematuridad, talla baja para edad gestacional, pequeño para la edad gestacional y APGAR 1-5´ bajo al nacer. Adicionalmente, se encontró que el riesgo de parto prematuro y Apgar bajo al nacer era menor en gestantes adolescentes que en gestantes adultas

Stability and maturity of biowaste composts derived by small municipalities : correlation among physical, chemical and biological indices

Stability and maturity are important criteria to guarantee the quality of a compost that is applied to agriculture or used as amendment in degraded soils. Although different techniques exist to evaluate stability and maturity, the application of laboratory tests in municipalities in developing countries can be limited due to cost and application complexities. In the composting facilities of such places, some classical low cost on-site tests to monitor the composting process are usually implemented; however, such tests do not necessarily clearly identify conditions of stability and maturity. In this article, we have applied and compared results of stability and maturity tests that can be easily employed on site (i.e. temperature, pH, moisture, electrical conductivity [EC], odor and color), and of tests that require more complex laboratory techniques (volatile solids, C/N ratio, self-heating, respirometric index, germination index [GI]). The evaluation of the above was performed in the field scale using 2 piles of biowaste applied compost. The monitoring period was from day 70 to day 190 of the process. Results showed that the low-cost tests traditionally employed to monitor the composting process on-site, such as temperature, color and moisture, do not provide consistent determinations with the more complex laboratory tests used to assess stability (e.g. respiration index, self-heating, volatile solids). In the case of maturity tests (GI, pH, EC), both the on-site tests (pH, EC) and the laboratory test (GI) provided consistent results. Although, stability was indicated for most of the samples, the maturity tests indicated that products were consistently immature. Thus, a stable product is not necessarily mature. Conclusively, the decision on the quality of the compost in the installations located in developing countries requires the simultaneous use of a combination of tests that are performed both in the laboratory and on-site

Globules and pillars seen in the [CII] 158 micron line with SOFIA

Molecular globules and pillars are spectacular features, found only in the interface region between a molecular cloud and an HII-region. Impacting Far-ultraviolet (FUV) radiation creates photon dominated regions (PDRs) on their surfaces that can be traced by typical cooling lines. With the GREAT receiver onboard SOFIA we mapped and spectrally resolved the [CII] 158 micron atomic fine-structure line and the highly excited 12CO J=11-10 molecular line from three objects in Cygnus X (a pillar, a globule, and a strong IRAS source). We focus here on the globule and compare our data with existing Spitzer data and recent Herschel Open-Time PACS data. Extended [CII] emission and more compact CO-emission was found in the globule. We ascribe this emission mainly to an internal PDR, created by a possibly embedded star-cluster with at least one early B-star. However, external PDR emission caused by the excitation by the Cyg OB2 association cannot be fully excluded. The velocity-resolved [CII] emission traces the emission of PDR surfaces, possible rotation of the globule, and high-velocity outflowing gas. The globule shows a velocity shift of ~2 km/s with respect to the expanding HII-region, which can be understood as the residual turbulence of the molecular cloud from which the globule arose. This scenario is compatible with recent numerical simulations that emphazise the effect of turbulence. It is remarkable that an isolated globule shows these strong dynamical features traced by the [CII]-line, but it demands more observational studies to verify if there is indeed an embedded cluster of B-stars.Comment: Letter accepted by A&A (SOFIA special issue

Clinical-epidemiologic variation in patients treated in the first and second wave of COVID-19 in Lambayeque, Peru: A cluster analysis

"Objectives: To identify differences in the clinical and epidemiologic characteristics of patients during the first and second waves of the COVID-19 pandemic at the EsSalud Lambayeque health care network, Peru. Methods: An analytical cross-sectional study of 53,912 patients enrolled during the first and second waves of COVID-19 was conducted. Cluster analysis based on clustering large applications (CLARA) was applied to clinical-epidemiologic data presented at the time of care. The two pandemic waves were compared using clinical-epidemiologic data from epidemiologic surveillance. Results: Cluster analysis identified four COVID-19 groups with a characteristic pattern. Cluster 1 included the largest number of participants in both waves, and the participants were predominantly female. Cluster 2 included patients with gastrointestinal, respiratory, and systemic symptoms. Cluster 3 was the “severe” cluster, characterized by older adults and patients with dyspnea or comorbidities (cardiovascular, diabetes, obesity). Cluster 4 included asymptomatic, pregnant, and less severe patients. We found differences in all clinical-epidemiologic characteristics according to the cluster to which they belonged. Conclusion: Using cluster analysis, we identified characteristic patterns in each group. Respiratory, gastrointestinal, dyspnea, anosmia, and ageusia symptoms were higher in the second COVID-19 wave than the first COVID-19 wave

TESS Spots A Hot Jupiter With An Inner Transiting Neptune

Hot Jupiters are rarely accompanied by other planets within a factor of a few in orbital distance. Previously, only two such systems have been found. Here, we report the discovery of a third system using data from the Transiting Exoplanet Survey Satellite (TESS). The host star, TOI-1130, is an eleventh magnitude K-dwarf in Gaia G-band. It has two transiting planets: a Neptune-sized planet (3.65 ± 0.10 ${R}_{\oplus }$) with a 4.1 days period, and a hot Jupiter (${1.50}_{-0.22}^{+0.27}$ ${R}_{{\rm{J}}}$) with an 8.4 days period. Precise radial-velocity observations show that the mass of the hot Jupiter is ${0.974}_{-0.044}^{+0.043}$ ${M}_{{\rm{J}}}$. For the inner Neptune, the data provide only an upper limit on the mass of 0.17 ${M}_{{\rm{J}}}$ (3σ). Nevertheless, we are confident that the inner planet is real, based on follow-up ground-based photometry and adaptive-optics imaging that rule out other plausible sources of the TESS transit signal. The unusual planetary architecture of and the brightness of the host star make TOI-1130 a good test case for planet formation theories, and an attractive target for future spectroscopic observations

Geography and ecology shape the phylogenetic composition of Amazonian tree communities.

Aim Amazonia hosts more tree species from numerous evolutionary lineages, both young and ancient, than any other biogeographic region. Previous studies have shown that tree lineages colonized multiple edaphic environments and dispersed widely across Amazonia, leading to a hypothesis, which we test, that lineages should not be strongly associated with either geographic regions or edaphic forest types. Location Amazonia. Taxon Angiosperms (Magnoliids; Monocots; Eudicots). Methods Data for the abundance of 5082 tree species in 1989 plots were combined with a mega-phylogeny. We applied evolutionary ordination to assess how phylogenetic composition varies across Amazonia. We used variation partitioning and Moran's eigenvector maps (MEM) to test and quantify the separate and joint contributions of spatial and environmental variables to explain the phylogenetic composition of plots. We tested the indicator value of lineages for geographic regions and edaphic forest types and mapped associations onto the phylogeny. Results In the terra firme and várzea forest types, the phylogenetic composition varies by geographic region, but the igapó and white-sand forest types retain a unique evolutionary signature regardless of region. Overall, we find that soil chemistry, climate and topography explain 24% of the variation in phylogenetic composition, with 79% of that variation being spatially structured (R2 = 19% overall for combined spatial/environmental effects). The phylogenetic composition also shows substantial spatial patterns not related to the environmental variables we quantified (R2 = 28%). A greater number of lineages were significant indicators of geographic regions than forest types. Main Conclusion Numerous tree lineages, including some ancient ones (>66 Ma), show strong associations with geographic regions and edaphic forest types of Amazonia. This shows that specialization in specific edaphic environments has played a long-standing role in the evolutionary assembly of Amazonian forests. Furthermore, many lineages, even those that have dispersed across Amazonia, dominate within a specific region, likely because of phylogenetically conserved niches for environmental conditions that are prevalent within regions.Na publicação: Joice Ferreira

Two super-Earths at the edge of the habitable zone of the nearby M dwarf TOI-2095

The main scientific goal of TESS is to find planets smaller than Neptune around stars bright enough to allow further characterization studies. Given our current instrumentation and detection biases, M dwarfs are prime targets to search for small planets that are in (or nearby) the habitable zone of their host star. Here we use photometric observations and CARMENES radial velocity measurements to validate a pair of transiting planet candidates found by TESS. The data was fitted simultaneously using a Bayesian MCMC procedure taking into account the stellar variability present in the photometric and spectroscopic time series. We confirm the planetary origin of the two transiting candidates orbiting around TOI-2095 (TIC 235678745). The star is a nearby M dwarf ($d = 41.90 \pm 0.03$ pc, $T_{\rm eff} = 3759 \pm 87$ K, $V = 12.6$ mag) with a stellar mass and radius of $M_\star = 0.44 \pm 0.02 \; M_\odot$ and $R_\star = 0.44 \pm 0.02 \; R_\odot$, respectively. The planetary system is composed of two transiting planets: TOI-2095b with an orbital period of $P_b = 17.66484 \pm (7\times 10^{-5})$ days and TOI-2095c with $P_c = 28.17232 \pm (14\times 10^{-5})$ days. Both planets have similar sizes with $R_b = 1.25 \pm 0.07 \; R_\oplus$ and $R_c = 1.33 \pm 0.08 \; R_\oplus$ for planet b and c, respectively. We put upper limits on the masses of these objects with $M_b < 4.1 \; M_\oplus$ for the inner and $M_c < 7.4 \; M_\oplus$ for the outer planet (95\% confidence level). These two planets present equilibrium temperatures in the range of 300 - 350 K and are close to the inner edge of the habitable zone of their star.Comment: Submitted to Astronomy & Astrophysic