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Producción de Hidrógeno mediante digestión anaerobia de residuos de planta de jitomate 番茄酱植物残渣厌氧消化制氢
Pub Date : 2019-06-30 DOI: 10.35429/jcpe.2019.19.6.1.12
Sarai Camarena-Martínez, Juan Humberto Martínez-Martínez, Adriana Saldaña-Robles, G. Ruiz-Aguilar
Hydrogen (H2) is recognized as a promising energy carrier among the alternatives for obtaining clean energy, since it has a high energy efficiency (122 kJ / g) and can be obtained from lignocellulosic waste through a biological process. In the state of Guanajuato, high amounts of plant waste derived from tomato cultivation are generated because this is the crop mostly produced through protected agriculture. So, the objective of the present study was to consider tomato plant residues for the generation of hydrogen through the anaerobic digestion process. Two sources of inoculum, native microflora of the tomato plant and anaerobic sludge pretreated at 100 ° C for 24 h; and four mineral media at an initial pH of 6.5 ± 0.2 in batch experiments, were evaluated. The highest yield was 37.4 mLH2 / g SV using native microflora and mineral media with yeast extract. Hydrogen production was found like those reported in the literature for other type of waste, highlighting the no-need to pretreat the substrate or inoculum. Therefore, the methodology propose is efficient to the hydrogen production from tomato plant residues.
氢(H2)被认为是获得清洁能源的替代品中有前途的能量载体,因为它具有高能量效率(122千焦/克),并且可以通过生物过程从木质纤维素废物中获得。在瓜纳华托州,种植番茄产生了大量的植物废料,因为这种作物主要是通过保护农业生产的。因此,本研究的目的是考虑番茄植物残留物通过厌氧消化过程产氢。两种来源的接种物,番茄植物的原生菌群和厌氧污泥在100°C预处理24 h;在初始pH为6.5±0.2的条件下,对四种矿物介质进行了批量实验。在原生菌群和含酵母浸膏的矿物培养基中,产量最高可达37.4 mLH2 / g SV。产氢的发现与文献中报道的其他类型的废物一样,突出了不需要预处理底物或接种物。因此,所提出的方法对番茄植株残体制氢是有效的。
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引用次数: 0
Efecto de la adición de inulina en las propiedades fisicoquímicas de queso tipo panela descremado 添加菊粉对脱脂帕内拉干酪理化性能的影响
Pub Date : 2019-06-30 DOI: 10.35429/jcpe.2019.19.6.44.51
María Aguilar, J. Carranza, M. Bermúdez, C. Romo
The objective of this investigation was to analyze how inulin affects concentrations of 1%, 2%, 3%, 4%, the physicochemical composition of panela cheese. The panela cheese was made in the Dairy Workshop of the Food Technology Area of the Autonomous University of Aguascalientes (UAA). The physicochemical analyzes of pH, humidity, ashes, total solids and fat, specifically the Quality Control Laboratory of the Center of Agricultural Sciences of the same university, according to the methods of the Mexican Standards. For the statistical analysis the analysis of the variance (ANOVA) of a pathway was performed. Using Tukey multiple comparison analysis (p <0.05). Using the statistical program Centurión XV Statistics. According to the results detected, inulin was modified, it changed the pH, humidity, ashes and total solids of skimmed panela cheese, from 1%.
本研究的目的是分析菊粉在1%、2%、3%、4%浓度下对帕内拉干酪理化成分的影响。帕内拉奶酪是在阿瓜斯卡连特斯自治大学(UAA)食品技术区乳品车间制作的。根据墨西哥标准的方法,对pH值、湿度、灰分、总固体和脂肪进行理化分析,具体来说是由同一所大学农业科学中心的质量控制实验室进行的。对于统计分析,进行了路径的方差分析(ANOVA)。采用Tukey多元比较分析(p <0.05)。使用统计程序Centurión XV统计。根据检测结果,对菊粉进行改性,使脱脂帕内拉奶酪的pH值、湿度、灰分和总固结物从1%改变。
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引用次数: 0
Cálculo de la energía de activación de la difusión de boro en la capa de Fe2B en la borurización por empaquetamiento de los aceros SAE 1050 y DIN UC1 SAE 1050和DIN UC1钢填料硼化过程中硼在Fe2B层扩散的活化能计算
Pub Date : 2019-03-31 DOI: 10.35429/jcpe.2019.18.6.8.17
Merced Martínez-Vázquez, Marissa Vargas-Ramírez, Lourdes Cortés-Campos, Juan Gregorio Hortelano-Capetillo
The layer of iron boride (Fe2B) was formed on the surface of two steels, SAE 1005 and DIN UC1; after being subjected a treatment by packaging, and it was used to study the effect of the chemical composition on the thickness of the layer, the growth kinetics and the activation energy for boron diffusion. The mass balance equation and the parabolic growth law were used at the Fe2B/substrate interface, considering that the layer begins to grow after an incubation time (t0). The microscopic analysis revealed in the iron boride its form irregular, type saw teeth, in both steels. The present phases were identified by X-Ray diffraction, corroborating the presence of a single-phase Fe2B layer. An Arrhenius-type equation was used to correlate the layer thickness with the activation energy, which for this study was determined in 132.3 and 143.9 kJ mol-1 for SAE1005 and DIN UC1 steels, respectively.
在sae1005和dinuc1两种钢的表面形成硼化铁(Fe2B)层;经过包装处理后,研究了化学成分对层厚、生长动力学和硼扩散活化能的影响。考虑到孵育时间(t0)后层开始生长,在Fe2B/衬底界面处采用质量平衡方程和抛物线生长定律。显微分析表明,两种钢的硼化铁均呈不规则锯齿状。通过x射线衍射鉴定了当前的相,证实了单相Fe2B层的存在。采用arrhenius型方程将层厚与活化能联系起来,本研究中SAE1005和DIN UC1钢的活化能分别为132.3和143.9 kJ mol-1。
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引用次数: 1
Biodigestor con variables monitoreadas 监测变量的生物消化池
Pub Date : 2019-03-31 DOI: 10.35429/JCPE.2019.18.6.37.47
Lydia Gabriela Ortega-Bucio, Fabiola Hernández-Hernández, José Marcos Zea-Pérez, Adela Becerra-Chavez
The project consists of the design and construction of a biodigester that allows the generation of methane gas for heating and cooking food in domestic stoves. The Biodigestor will have as byproduct Biol, from leached organic matter, this byproduct can be used as fertilizer in gardens or domestic crops. The monitored variables of the Biodigestor use a data acquisition card to obtain the level of Ph, biol, temperature, humidity and pressure during the methane generation process, as well as the quantity and quality of methane gas produced. This project has been developed in several stages, design, prototype scale tests, connection of sensors and tests that allow to define reference data and data during methane production. A design has been achieved that allows simultaneous production in three biodigestors, this proposal will allow through a specific protocol, the continuity in obtaining the gas can be maintained with the possibility of emptying, cleaning and replacing organic matter without stopping the methane production process
该项目包括设计和建造一个生物沼气池,该沼气池可以产生甲烷气体,用于在家庭炉灶中加热和烹饪食物。生物消化器将有副产品生物油,从浸出的有机物,这种副产品可以用作花园或家庭作物的肥料。生物沼气池的监测变量采用数据采集卡获取甲烷生成过程中的Ph、生物、温度、湿度、压力水平,以及甲烷气体的产出量和质量。该项目经过几个阶段的开发,包括设计、原型规模测试、传感器连接和测试,以确定甲烷生产过程中的参考数据和数据。一个设计已经实现,允许在三个生物消化器中同时生产,这个提议将允许通过一个特定的协议,在不停止甲烷生产过程的情况下,获得气体的连续性可以保持排空、清洁和替换有机物的可能性
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引用次数: 0
Características de la glicerina obtenida del proceso de la reacción del metóxido de sodio en la producción del Biodiesel 生物柴油生产中甲醇钠反应过程中甘油的特性
Pub Date : 2019-03-31 DOI: 10.35429/jcpe.2019.18.6.18.28
Ligia Adelayda Torres-Rivero, Brants Cheriff Ben-Youssef, María Fernanda Pérez-Gasca
Biodiesel is one of the alternative sources of energy obtained from the edible oils used in different types of kitchens as a renewable resource. The by-product derived from the reaction process transesterification in the production of biodiesel is glycerin the aqueous glycerin solution is filtered to remove the impurities and then neutralized with 1N NaOH. The objective of this work was to identify the characteristics of this glycerin and its applications and future use, the characterization made of this by-product from which it was collected. liters in amber bottles, the pH range between 6 and 7, density 1.24 g / l, viscosity .897 pascal sec., it is possible to recover methanol to a purity of 58% by weight, glycerin is used in many products of consumption, has a low toxicity, its properties are stability and compatibility towards other chemical compounds. The applications of this by-product are the manufacture of liquid soap, degreaser, floor cleaning, it is a non-irritating, biodegradable and recyclable compound.
作为一种可再生资源,生物柴油是从不同类型的厨房中使用的食用油中获得的替代能源之一。生物柴油生产中酯交换反应过程的副产物是甘油,甘油水溶液经过滤去除杂质后用1N NaOH中和。本工作的目的是确定该甘油的特性及其应用和未来的用途,并对收集该甘油的副产物进行表征。在琥珀瓶中,pH值范围在6到7之间,密度1.24 g / l,粘度。897帕斯卡秒,有可能回收甲醇到58%的重量纯度,甘油用于许多产品的消费,具有低毒性,其性质稳定,与其他化合物的相容性。该副产品的应用是制造液体肥皂,脱脂剂,地板清洁,它是一种无刺激性,可生物降解和可回收的化合物。
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引用次数: 0
Uso de Canna glauca para el tratamiento de aguas residuales domésticas en un humedal artificial de flujo superficial 使用美人蕉glauca处理人工地表流动湿地的生活废水
Pub Date : 2019-03-31 DOI: 10.35429/jcpe.2019.18.6.53.60
Nellybeth Rodríguez-Martínez, S. Sánchez-Herrera, B. Ponce-Lira, Juan Noguez-Estrada
The design and construction of a prototype of an artificial surface flow wetland was carried out with the aim of purifying domestic waste water. Field data was taken the reactor was designed and built to assess the plant's (Canna glauca) efficiency in sewage treatment. The location, available surface, and the influent flow were considered for the design; as well as available surface and the flow of influence of the influent the hydraulic retention, the size of the rock bed, the volume of the storage tank, resistance (mechanical, presence of sulfates and cleaning and sanitization substance) and permeability were considered to ensure its service life. A prototype was built where water quality was characterized by a HI 9828-0® multiparametric probe, in the reactor tributary ans effluent. Within the most relevant results is that the amount of oxygen, pH, EC, resistivity, STDs, salinity and ORP, are parameters that were favored with the presence of the aquatic plant for the purification of waste water
以净化生活污水为目的,进行了人工地表流湿地原型的设计与施工。现场数据采集,反应器的设计和建造,以评估植物(美人蕉)在污水处理效率。设计时考虑了场地位置、可利用表面积和进水流量;除了考虑可用表面和进水流量对水力滞留的影响外,还考虑了岩床的大小、储罐的体积、阻力(机械阻力、硫酸盐和清洁卫生物质的存在)和渗透性,以确保其使用寿命。建立了一个原型,其中水质的特点是HI 9828-0®多参数探头,在反应器支流和流出。在最相关的结果中,氧气量,pH值,EC,电阻率,性传播疾病,盐度和ORP是水生植物存在时有利于废水净化的参数
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引用次数: 0
Síntesis de nanopartículas de plata reducidas con desecho producido por el insecto Ulomoides dermestoides 用昆虫皮样芽肿产生的废物合成还原银纳米颗粒
Pub Date : 2019-03-31 DOI: 10.35429/jcpe.2019.18.6.19.36
Isabel Ramos-Villa, Diego Alberto Lomelí-Rosales, Sandra Fabiola Velasco-Ramírez, Gilberto Velazquez-Juarez
The scale of nanotechnology goes from 0.2 nm to approximately 100 nm and is used in many different disciplines. U.dermestoides is a beetle belonging to the family Tenebrionidae,commonly known as darkling beetles, it has phytophagous habits. In its waste have been identified the following organic compounds: Saponins, coumarins, steroids, phenols, alkaloids, proteins and amino acids. The synthesis of silver nanoparticles was done using colloidal solution from the reduction of silver nitrate at different concentrations, using U. dermestoides waste from three different diets: Rye and Apple; oats, bread and Apple and finally bread and Apple. Series of qualitative tests were done to determinate the presence of phenols, alkaloids carbohydrates, proteins and amino acids. UV-vis spectrophotometry was used in a range from 200 to 800 nm. The results show that between 400-450 nm there is a surface plasmon resonance peak, indicating the formation of silver nanoparticles. By scanning electron microscopy (SEM) the presence of spherical silver nanoparticles was observed and by transmission electron microscopy (TEM) was confirmed the presence and shape of nanoparticles.
纳米技术的尺度从0.2纳米到大约100纳米,被用于许多不同的学科。皮甲是一种属于拟甲科的甲虫,俗称黑甲虫,它有食植物的习惯。在其废物中已鉴定出以下有机化合物:皂苷、香豆素、类固醇、酚类、生物碱、蛋白质和氨基酸。用不同浓度的硝酸银还原后的胶体溶液合成纳米银,利用黑麦和苹果三种不同饲料中的皮霉霉废物;燕麦,面包和苹果,最后是面包和苹果。进行了一系列定性试验,以确定酚类、生物碱、碳水化合物、蛋白质和氨基酸的存在。紫外-可见分光光度法在200 ~ 800 nm范围内测定。结果表明,在400 ~ 450 nm之间存在一个表面等离子体共振峰,表明银纳米粒子的形成。通过扫描电子显微镜(SEM)观察到球形银纳米粒子的存在,通过透射电子显微镜(TEM)证实了纳米粒子的存在和形状。
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引用次数: 0
Análisis de la solidificación de aleaciones ZN-AL a partir del método de Newton 用牛顿法分析ZN-AL合金的凝固
Pub Date : 2019-03-31 DOI: 10.35429/jcpe.2019.18.6.1.7
Sara Cruz-Guerrero, Israel Lazaro-Becerril, Jorge Eduardo Munguia-Huerta, Antonio Juanico-Loran, Hector Cruz-Mejia
The undercoolings of the primary and eutectic phases were determined in three Zn-Al alloys by the experimental cooling curves associated. The compositions of the alloys considered in this study were Zn-3%wAl, Zn-6%w Al and Zn-11% w Al in order to determinate the influence of the primary phase in the morphology obtained by the euetecic microsconstituent at the end of the solidification and its relationship with the underccoling registered in each step. The experimental cooling curves were obtained by a thermocouple type K inserted laterally at the center of a metallic mould of stainless steel 304, which dimentions were 4 cm of diameter and 7.5 cm of lengh. This thermocouple was connected to a data adqusiitior system and a computer in order to register these data in an electronic file. These data were processed following the algorithm of NTA method. The results obtained showed that a minor undercoolig is associated with a lamellar eutectic morphology.
利用相关的实验冷却曲线测定了三种Zn-Al合金初生相和共晶相的过冷度。本研究考虑的合金成分为Zn-3%wAl, Zn-6%w Al和Zn-11% wAl,以确定凝固结束时共晶显微成分对初生相形貌的影响及其与每一步中记录的过冷的关系。在直径为4 cm、长度为7.5 cm的304不锈钢金属模具中心插入K型热电偶,获得了实验冷却曲线。该热电偶连接到一个数据采集系统和一台计算机,以便在电子文件中登记这些数据。采用NTA法对数据进行处理。结果表明,少量过冷与层状共晶形貌有关。
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引用次数: 0
Electrocoagulación en el agua de proceso de una Industria de alimentos 食品工业过程水中的电凝
Pub Date : 2019-03-31 DOI: 10.35429/jcpe.2019.18.6.48.52
María Guadalupe Martin del Campo-Sanchez, José Luis Escobar-Gonzalez
The main objective was to develop a wastewater treatment system by means of the electrocoagulation method according to the parameters of Chemical Oxygen Demand (COD) and Total Suspended Solids (SST). The results obtained were that at a pH of 6 and 7 with a contact time of 30 minutes, the highest percentage of removal of SST (98%) and COD (90%) was obtained. Once the conductor was selected, tests were carried out at different pH (6, 7 and 8) with contact times of 15, 30 and 45 minutes each, at 12 V and 0.4 A. A Multifactorial ANOVA statistical test was performed to determine if there were significant differences between the treatments. Once the results were evaluated, a prototype of approximately 38 L was designed with parallel plates with results of removal of SST of 93% and COD of 66%. The approximate cost of treatment per cubic meter is $ 35
主要目的是根据化学需氧量(COD)和总悬浮物(SST)的参数,开发电絮凝法废水处理系统。结果表明,在pH为6和7,接触时间为30 min时,SST去除率最高(98%),COD去除率最高(90%)。选择导体后,在不同的pH值(6、7和8)下进行测试,每次接触时间为15、30和45分钟,电压为12 V和0.4 A。采用多因素方差分析进行统计检验,以确定治疗之间是否存在显著差异。在对结果进行评估后,设计了一个约38 L的平行板原型,结果显示SST去除率为93%,COD去除率为66%。每立方米的处理费用约为35美元
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引用次数: 0
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Revista de Energía Química y Física
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