Contribución al estudio del Mioceno del Penedès (sector Gelida)

This paper deals with lithology, sedimentology and paleontology of two series in the Gelida zone (province of Barcelona); Sheet n." 420 (San Baudilio de Llobregat). The existence of a deltaic-like structure of Tortonian age is suggested as a logical consecuence of this paper

Nuevos datos sobre el Mioceno inferior marino del Vallès (sector Cerdanyola)

A partir del estudio de un afloramiento marino situado aproximadamente a 300 m al NW del Castillo de Sant Margal (Cerdanyola, Barcelona), que ha suministrado una interesante fauna, se hace una interpretación paleogeográfica y una descripción de algunas de las especies halladas

Dos Lamellaptychi cretácicos de Fortuna (Murcia)

Se estudian 2 Lamellaptychi del Hauteriviense de Fortuna (Prov. de Murcia) (Subbético externo), figurándose por primera vez material español.We study two species of Lamellaptychi, coming from the Hauterivian of Fortuna (Murcia Prov.) (Externa} Subbetic). For the first time Spanish specimens of these species are figured

Los Dinosaurios de Morella (Nota preliminar)

En esta nota se da cuenta de las campañas llevadas a cabo, en los alrededores de Morella (Castellón, España), para la extracción de restos de Dinosaurios; se indican los ejemplares obtenidos hasta el momento y se hace un breve comentario de las piezas ya estudiadas

IMPLEMENTATION OF A PHOTOVOLTAIC FLOATING COVER FOR IRRIGATION RESERVOIRS

[EN] The article presents the main features of a floating photovoltaic cover system (FPCS) for water irrigation reservoirs whose purpose is to reduce the evaporation of water while generating electrical power. The system consists of polyethylene floating modules which are able to adapt to varying reservoir water levels by means of tension bars and elastic fasteners. (C) 2013 Elsevier Ltd. All rights reserved.Redón-Santafé, M.; Ferrer-Gisbert, P.; Sánchez-Romero, F.; Torregrosa Soler, JB.; Ferran Gozalvez, JJ.; Ferrer Gisbert, CM. (2014). IMPLEMENTATION OF A PHOTOVOLTAIC FLOATING COVER FOR IRRIGATION RESERVOIRS. Journal of Cleaner Production. 66:568-570. doi:10.1016/j.jclepro.2013.11.006S5685706

Operating Conditions Optimization via the Taguchi Method to Remove Colloidal Substances from Recycled Paper and Cardboard Production Wastewater

[EN] Optimization of the ultrafiltration (UF) process to remove colloidal substances from a paper mill's treated effluent was investigated in this study. The effects of four operating parameters in a UF system (transmembrane pressure (TMP), cross-flow velocity (CFV), temperature and molecular weight cut-off (MWCO)) on the average permeate flux (J(v)), organic matter chemical oxygen demand (COD) rejection rate and the cumulative flux decline (SFD), was investigated by robust experimental design using the Taguchi method. Analysis of variance (ANOVA) for an L(9)orthogonal array were used to determine the significance of the individual factors, that is to say, to determine which factor has more and which less influence over the UF response variables. Analysis of the percentage contribution (P%) indicated that the TMP and MWCO have the greatest contribution to the average permeate flux and SFD. In the case of the COD rejection rate, the results showed that MWCO has the highest contribution followed by CFV. The Taguchi method and the utility concept were employed to optimize the multiple response variables. The optimal conditions were found to be 2.0 bar of transmembrane pressure, 1.041 m/s of the cross-flow velocity, 15 degrees C of the temperature, and 100 kDa MWCO. The validation experiments under the optimal conditions achievedJ(v), COD rejection rate and SFD results of 81.15 L center dot m(-2)center dot h(-1), 43.90% and 6.01, respectively. Additionally, SST and turbidity decreased by about 99% and 99.5%, respectively, and reduction in particle size from around 458-1281 nm to 12.71-24.36 nm was achieved. The field-emission scanning electron microscopy images under optimal conditions showed that membrane fouling takes place at the highest rate in the first 30 min of UF. The results demonstrate the validity of the approach of using the Taguchi method and utility concept to obtain the optimal membrane conditions for the wastewater treatment using a reduced number of experiments.Sousa, MRS.; Lora-García, J.; López Pérez, MF.; Santafé Moros, MA.; Gozálvez-Zafrilla, JM. (2020). Operating Conditions Optimization via the Taguchi Method to Remove Colloidal Substances from Recycled Paper and Cardboard Production Wastewater. Membranes. 10(8):1-22. https://doi.org/10.3390/membranes10080170S122108Sevimli, M. F. (2005). Post-Treatment of Pulp and Paper Industry Wastewater by Advanced Oxidation Processes. Ozone: Science & Engineering, 27(1), 37-43. doi:10.1080/01919510590908968Key Statistics Report 2017|CEPI-CONFEDERATION OF EUROPEAN PAPER INDUSTRIEShttp://www.cepi.org/keystatistics2017Rajkumar, K. (2016). An Evaluation of Biological Approach for the Effluent Treatment of Paper Boards Industry - An Economic Perspective. Journal of Bioremediation & Biodegradation, 7(5). doi:10.4172/2155-6199.1000366AHMAD, A., WONG, S., TENG, T., & ZUHAIRI, A. (2008). Improvement of alum and PACl coagulation by polyacrylamides (PAMs) for the treatment of pulp and paper mill wastewater. Chemical Engineering Journal, 137(3), 510-517. doi:10.1016/j.cej.2007.03.088Temmink, H., & Grolle, K. (2005). Tertiary activated carbon treatment of paper and board industry wastewater. Bioresource Technology, 96(15), 1683-1689. doi:10.1016/j.biortech.2004.12.035Zhang, Q., & Chuang, K. T. (2001). Adsorption of organic pollutants from effluents of a Kraft pulp mill on activated carbon and polymer resin. Advances in Environmental Research, 5(3), 251-258. doi:10.1016/s1093-0191(00)00059-9Catalkaya, E. C., & Kargi, F. (2008). Advanced oxidation treatment of pulp mill effluent for TOC and toxicity removals. Journal of Environmental Management, 87(3), 396-404. doi:10.1016/j.jenvman.2007.01.016Pérez, M., Torrades, F., Garcı́a-Hortal, J. A., Domènech, X., & Peral, J. (2002). Removal of organic contaminants in paper pulp treatment effluents under Fenton and photo-Fenton conditions. Applied Catalysis B: Environmental, 36(1), 63-74. doi:10.1016/s0926-3373(01)00281-8Gönder, Z. B., Arayici, S., & Barlas, H. (2012). Treatment of Pulp and Paper Mill Wastewater Using Utrafiltration Process: Optimization of the Fouling and Rejections. Industrial & Engineering Chemistry Research, 51(17), 6184-6195. doi:10.1021/ie2024504Liu, G., Liu, Y., Ni, J., Shi, H., & Qian, Y. (2004). Treatability of kraft spent liquor by microfiltration and andultrafiltration. Desalination, 160(2), 131-141. doi:10.1016/s0011-9164(04)90003-3Nuortila-Jokinen, J., Mänttäri, M., Huuhilo, T., Kallioinen, M., & Nyström, M. (2004). Water circuit closure with membrane technology in the pulp and paper industry. Water Science and Technology, 50(3), 217-227. doi:10.2166/wst.2004.0199Zaidi, A., Buisson, H., Sourirajan, S., & Wood, H. (1992). Ultra- and Nano-Filtration in Advanced Effluent Treatment Schemes for Pollution Control in the Pulp and Paper Industry. Water Science and Technology, 25(10), 263-276. doi:10.2166/wst.1992.0254Toczyłowska-Mamińska, R. (2017). Limits and perspectives of pulp and paper industry wastewater treatment – A review. Renewable and Sustainable Energy Reviews, 78, 764-772. doi:10.1016/j.rser.2017.05.021Kamali, M., & Khodaparast, Z. (2015). Review on recent developments on pulp and paper mill wastewater treatment. Ecotoxicology and Environmental Safety, 114, 326-342. doi:10.1016/j.ecoenv.2014.05.005Beril Gönder, Z., Arayici, S., & Barlas, H. (2011). Advanced treatment of pulp and paper mill wastewater by nanofiltration process: Effects of operating conditions on membrane fouling. Separation and Purification Technology, 76(3), 292-302. doi:10.1016/j.seppur.2010.10.018Shukla, S. K., Kumar, V., Van Doan, T., Yoo, K., Kim, Y., & Park, J. (2014). Combining activated sludge process with membrane separation to obtain recyclable quality water from paper mill effluent. Clean Technologies and Environmental Policy, 17(3), 781-788. doi:10.1007/s10098-014-0836-2Chen, C., Mao, S., Wang, J., Bao, J., Xu, H., Su, W., & Dai, H. (2015). Application of Ultrafiltration in a Paper Mill: Process Water Reuse and Membrane Fouling Analysis. BioResources, 10(2). doi:10.15376/biores.10.2.2376-2391Krawczyk, H., Oinonen, P., & Jönsson, A.-S. (2013). Combined membrane filtration and enzymatic treatment for recovery of high molecular mass hemicelluloses from chemithermomechanical pulp process water. Chemical Engineering Journal, 225, 292-299. doi:10.1016/j.cej.2013.03.089Sousa, M. R. S., Lora-Garcia, J., & López-Pérez, M.-F. (2018). Modelling approach to an ultrafiltration process for the removal of dissolved and colloidal substances from treated wastewater for reuse in recycled paper manufacturing. Journal of Water Process Engineering, 21, 96-106. doi:10.1016/j.jwpe.2017.11.017Karthik, M., Dhodapkar, R., Manekar, P., Aswale, P., & Nandy, T. (2011). Closing water loop in a paper mill section for water conservation and reuse. Desalination, 281, 172-178. doi:10.1016/j.desal.2011.07.055Mänttäri, M., Nuortila-Jokinen, J., & Nyström, M. (1997). Evaluation of nanofiltration membranes for filtration of paper mill total effluent. Filtration & Separation, 34(3), 275-280. doi:10.1016/s0015-1882(97)84794-5Cassano, A., Conidi, C., & Drioli, E. (2011). Comparison of the performance of UF membranes in olive mill wastewaters treatment. Water Research, 45(10), 3197-3204. doi:10.1016/j.watres.2011.03.041Puro, L., Tanninen, J., & Nyström, M. (2002). Analyses of organic foulants in membranes fouled by pulp and paper mill effluent using solid-liquid extraction. Desalination, 143(1), 1-9. doi:10.1016/s0011-9164(02)00215-1Puro, L., Kallioinen, M., Mänttäri, M., & Nyström, M. (2011). Evaluation of behavior and fouling potential of wood extractives in ultrafiltration of pulp and paper mill process water. Journal of Membrane Science, 368(1-2), 150-158. doi:10.1016/j.memsci.2010.11.032Hesampour, M., Krzyzaniak, A., & Nyström, M. (2008). The influence of different factors on the stability and ultrafiltration of emulsified oil in water. Journal of Membrane Science, 325(1), 199-208. doi:10.1016/j.memsci.2008.07.048Pourjafar, S., Jahanshahi, M., & Rahimpour, A. (2013). Optimization of TiO2 modified poly(vinyl alcohol) thin film composite nanofiltration membranes using Taguchi method. Desalination, 315, 107-114. doi:10.1016/j.desal.2012.08.029Reyhani, A., Sepehrinia, K., Seyed Shahabadi, S. M., Rekabdar, F., & Gheshlaghi, A. (2014). Optimization of operating conditions in ultrafiltration process for produced water treatment via Taguchi methodology. Desalination and Water Treatment, 54(10), 2669-2680. doi:10.1080/19443994.2014.904821Rezvanpour, A., Roostaazad, R., Hesampour, M., Nyström, M., & Ghotbi, C. (2009). Effective factors in the treatment of kerosene–water emulsion by using UF membranes. Journal of Hazardous Materials, 161(2-3), 1216-1224. doi:10.1016/j.jhazmat.2008.04.074Salahi, A., Abbasi, M., & Mohammadi, T. (2010). Permeate flux decline during UF of oily wastewater: Experimental and modeling. Desalination, 251(1-3), 153-160. doi:10.1016/j.desal.2009.08.006Salahi, A., & Mohammadi, T. (2011). Oily wastewater treatment by ultrafiltration using Taguchi experimental design. Water Science and Technology, 63(7), 1476-1484. doi:10.2166/wst.2011.383Ezzati, A., Gorouhi, E., & Mohammadi, T. (2005). Separation of water in oil emulsions using microfiltration. Desalination, 185(1-3), 371-382. doi:10.1016/j.desal.2005.03.086Kaladhar, M., Subbaiah, K. V., Rao, C. S., … Rao, K. N. (2011). Application of Taguchi approach and Utility Concept in solving the Multi-objective Problem when turning AISI 202 Austenitic Stainless Steel. Journal of Engineering Science and Technology Review, 4(1), 55-61. doi:10.25103/jestr.041.08Mohammadi, T., & Safavi, M. A. (2009). Application of Taguchi method in optimization of desalination by vacuum membrane distillation. Desalination, 249(1), 83-89. doi:10.1016/j.desal.2009.01.017Khan, M. M. T., Takizawa, S., Lewandowski, Z., Jones, W. L., Camper, A. K., Katayama, H., … Ohgaki, S. (2011). Membrane fouling due to dynamic particle size changes in the aerated hybrid PAC–MF system. Journal of Membrane Science, 371(1-2), 99-107. doi:10.1016/j.memsci.2011.01.017Rezaei, H., Ashtiani, F. Z., & Fouladitajar, A. (2014). Fouling behavior and performance of microfiltration membranes for whey treatment in steady and unsteady-state conditions. Brazilian Journal of Chemical Engineering, 31(2), 503-518. doi:10.1590/0104-6632.20140312s00002521Cojocaru, C., & Zakrzewska-Trznadel, G. (2007). Response surface modeling and optimization of copper removal from aqua solutions using polymer assisted ultrafiltration. Journal of Membrane Science, 298(1-2), 56-70. doi:10.1016/j.memsci.2007.04.001Idris, A. (2002). Optimization of cellulose acetate hollow fiber reverse osmosis membrane production using Taguchi method. Journal of Membrane Science, 205(1-2), 223-237. doi:10.1016/s0376-7388(02)00116-3Kumar, Y., & Singh, H. (2014). Multi-response Optimization in Dry Turning Process Using Taguchi’s Approach and Utility Concept. Procedia Materials Science, 5, 2142-2151. doi:10.1016/j.mspro.2014.07.417Song, L. (1998). Flux decline in crossflow microfiltration and ultrafiltration: mechanisms and modeling of membrane fouling. Journal of Membrane Science, 139(2), 183-200. doi:10.1016/s0376-7388(97)00263-9Xu, J., Chang, C.-Y., & Gao, C. (2010). Performance of a ceramic ultrafiltration membrane system in pretreatment to seawater desalination. Separation and Purification Technology, 75(2), 165-173. doi:10.1016/j.seppur.2010.07.020Seyed Shahabadi, S. M., & Reyhani, A. (2014). Optimization of operating conditions in ultrafiltration process for produced water treatment via the full factorial design methodology. Separation and Purification Technology, 132, 50-61. doi:10.1016/j.seppur.2014.04.051Ennil Köse, T. (2008). Agricultural residue anion exchanger for removal of dyestuff from wastewater using full factorial design. Desalination, 222(1-3), 323-330. doi:10.1016/j.desal.2007.01.156Gönder, Z. B., Kaya, Y., Vergili, I., & Barlas, H. (2010). Optimization of filtration conditions for CIP wastewater treatment by nanofiltration process using Taguchi approach. Separation and Purification Technology, 70(3), 265-273. doi:10.1016/j.seppur.2009.10.001Reyhani, A., & Hemmati, M. (2013). Wastewater treatment by ultrafiltration system, considering the effects of operating conditions: experimental and modeling. Desalination and Water Treatment, 52(34-36), 6282-6294. doi:10.1080/19443994.2013.81558

A new photovoltaic floating cover system for water reservoirs

This paper describes a new photovoltaic floating cover system for water reservoirs developed jointly by the company CELEMIN ENERGY and the Universidad Politecnica de Valencia. The system consists of polyethylene floating modules which, with the use of tension producing elements and elastic fasteners, are able to adapt to varying reservoir water levels. A full-scale plant located near Alicante (Spain) was built in an agriculture reservoir to study the behaviour of the system. The top of the reservoir has a surface area of 4700 m(2) but only 7% of such area has been covered with the fixed solar system. The system also minimizes evaporation losses from water reservoirs. (C) 2013 Elsevier Ltd. All rights reserved.The English revision of this paper was funded by the Universidad Politecnica de Valencia, Spain.Ferrer Gisbert, CM.; Ferran Gozalvez, JJ.; Redón Santafé, M.; Ferrer-Gisbert, P.; Sánchez-Romero, F.; Torregrosa Soler, JB. (2013). A new photovoltaic floating cover system for water reservoirs. Renewable Energy. (60):63-70. doi:10.1016/j.renene.2013.04.007S63706

Project and Design of a Special Agricultural Warehouse Developed in Phases in Valencia (Spain)

[EN] This article describes the developing phases to build warehouses for a Pomelo Company at Valencian County (East of Spain). The warehouses are remarkable because they did not have many intermediate columns. Spatial and lightweight solutions are adopted and described. In the Projects also natural ventilation and lighting have been considered with a successfully result. Erection conditions and Regulations have been taken also account. It has been an inspiration motive for other consultants.Ferrer Gisbert, CM.; Ferrer-Gisbert, P.; Ferran Gozalvez, JJ.; Redón-Santafé, M.; Torregrosa Soler, JB.; Sánchez-Romero, F. (2020). Project and Design of a Special Agricultural Warehouse Developed in Phases in Valencia (Spain). Current Trends in Civil & Structural Engineering. 5(5):1-8. https://doi.org/10.33552/CTCSE.2020.05.000623S185

Modelización espacial del hábitat potencial de la trufa negra (Tuber melanosporum Vittad.) en la provincia de Huesca (España)

El cultivo de la trufa negra ( Tuber melanosporum Vittad.) es especialmente complicado por las exigencias ambientales que requiere. En el presente trabajo se propone un modelo de distribución de su hábitat en la provincia de Huesca (España). Para ello se usan factores condicionantes y limitantes de la presencia de la especie en el territorio en función de experiencias previas, y apoyado por un amplio conjunto de muestras de suelo tomadas directamente en campo. Se consideraron todas aquellas variables ambientales capaces de explicar la presencia/ausencia de la especie en el territorio. Dichas variables se clasifican en tres grupos según su naturaleza: climático, topográfico y edáfico. Se utilizaron Sistemas de Información Geográfica para integrar todas las variables ambientales en su dimensión espacial, y a través de un modelo de decisión de evaluación multicriterio se ponderaron para obtener una cartografía de aptitud. La asignación de los pesos relativos a cada variable se realizó en función de la importancia que tienen para el desarrollo de la especie, las experiencias similares en otros lugares, y en relación al área de estudio trabajada. La combinación de las variables ambientales que condicionan y limitan la aparición de la trufa negra en el territorio, en su dimensión espacial, dio como resultado una cartografía de distribución del hábitat potencial de la especie que muestra, a diferentes niveles, cuáles son las zonas con mayor o menor capacidad de producción de trufa negra. Los resultados muestran que un 2, 75% de la superficie de toda la provincia tiene una aptitud óptima para el desarrollo de la especie en función de su hábitat potencial, cifra que se reduce hasta 1, 62% cuando se trata de zonas potencialmente cultivables. El mapa fue validado con las presencias de trufa conocidas disponibles para el área de estudio. Black truffle (Tuber melanosporum Vittad.) cultivation is especially complicated by their environmental requirements. We propose in this paper a distribution model of habitat for Huesca province (Spain). We used conditioning and restricting factors to the presence of the species in territory based on previous ex-Gonperiences, and supported by a broad collection of field samples. Environmental variables can explain the presence/absence of the species in the study area. These variables are classified in three groups according to their nature: climatic, topographic and edaphic. We integrated in a GIS all parameters to unify spatial resolution, and by a multi-criteria decision model weighted them to obtain suitability areas. The weights allocation were assigned in function of their importance to black truffle presence and previous experiences. The combination of environmental variables that are conditioning and restricting the presence of black truffle in territory, generates a cartography of potential habitat distribution at different levels These levels are areas with more or less production ability of black truffle. Results show that 2.75% of province has an optimal aptitude to species development, this number is reduced to 1.62% in potential cultivation. Map was validated with available presences of known truffle locations in study area