Environmental and Climate Technologies最新文献_第7页

Implications of the FMEA Method in Evaluating Amirkabir Dam’s Environmental Risk FMEA方法在Amirkabir大坝环境风险评价中的意义

IF 1.4

Environmental and Climate Technologies Pub Date : 2022-01-01 DOI: 10.2478/rtuect-2022-0074

Yousef Kassem, H. Gökçekuş, A. Iravanian, M. Nategh

引用次数: 0

Hempcrete – CO2 Neutral Wall Solutions for 3D Printing Hempcrete -二氧化碳中性墙3D打印解决方案

IF 1.4

Environmental and Climate Technologies Pub Date : 2022-01-01 DOI: 10.2478/rtuect-2022-0057

M. Sinka, Ella Spurina, A. Korjakins, D. Bajare

引用次数: 6

Production of Biodiesel Using Phosphate Rock as a Heterogeneous Catalyst. An Optimized Process Using Surface Response Methodology 以磷矿石为多相催化剂生产生物柴油。利用表面响应法优化工艺

IF 1.4

Environmental and Climate Technologies Pub Date : 2022-01-01 DOI: 10.2478/rtuect-2022-0062

Janet Kiprono, H. Rutto, T. Seodigeng

{"title":"Production of Biodiesel Using Phosphate Rock as a Heterogeneous Catalyst. An Optimized Process Using Surface Response Methodology","authors":"Janet Kiprono, H. Rutto, T. Seodigeng","doi":"10.2478/rtuect-2022-0062","DOIUrl":"https://doi.org/10.2478/rtuect-2022-0062","url":null,"abstract":"Abstract In the present study, calcined phosphate rock was used as a heterogeneous catalyst for biodiesel production from waste cooking oil (WCO). Response surface methodology was used to optimize and determine the significant process variables that affected the experiment. A 5-level-4 factor Central composite design consisting of 30 experiments was used to develop a quadratic polynomial model. The following parameters were optimized, namely, reaction temperature (40–90 °C), catalyst to oil weight ratio (1–5 %), reaction time (40–120 min), and methanol to oil ratio (10:1–18:1). Maximum biodiesel yield of 96.07 % was obtained through numerical optimization at reaction temperature 62.63 °C, catalyst to oil weight ratio of 3.32 %, reaction time 79.07 min, and alcohol to oil ratio 14.79:1. Fourier transform Infrared Spectra (FTIR) analysis was used to characterize the phosphate rock in its raw form, after calcination at 1000 °C and after the first and the fourth reuse cycle. According to the American society for testing and material (ASTM D6751), the fuel properties such as kinematic viscosity, pour point, cloud point, and density were measured and were found to be within the stipulated range.","PeriodicalId":46053,"journal":{"name":"Environmental and Climate Technologies","volume":"47 23 1","pages":"822 - 835"},"PeriodicalIF":1.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80615704","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Biodiesel Production Using Calcined Phosphate Rock as a Precursor of Calcium Oxide Heterogeneous Catalyst 以煅烧磷矿为前驱体的氧化钙非均相催化剂生产生物柴油

IF 1.4

Environmental and Climate Technologies Pub Date : 2022-01-01 DOI: 10.2478/rtuect-2022-0073

Janet Kiprono, H. Rutto, T. Seodigeng, C. Enweremadu

{"title":"Biodiesel Production Using Calcined Phosphate Rock as a Precursor of Calcium Oxide Heterogeneous Catalyst","authors":"Janet Kiprono, H. Rutto, T. Seodigeng, C. Enweremadu","doi":"10.2478/rtuect-2022-0073","DOIUrl":"https://doi.org/10.2478/rtuect-2022-0073","url":null,"abstract":"Abstract In this paper, phosphate rock has been utilized beyond its traditional role as a raw material for fertilizer production to a new potential role as a heterogeneous base catalyst for biodiesel production. The rock was thermally modified through calcination at 900 °C for 8 hrs. One factor at a time experimental design was used to vary the operating conditions of time (30–150 min), temperature (40 °C–80 °C,) catalyst concentration (1–5 wt%), and methanol to oil ratio (10–50 wt%). It was established that the optimum production conditions for maximum biodiesel yield of 93 % using this novel catalyst was achieved at reaction time 90 min, reaction temperature 60 °C, catalyst concentration 3wt% and methanol to oil weight ratio of 30 wt%. The synthesized biodiesel was compared with the raw waste oil using Fourier transform infrared spectroscopy (FTIR) to determine the efficiency of conversion from this catalyst. The catalyst modification after calcination was also analysed using this spectroscopic technique to confirm any changes in the functional groups. Biodiesel’s chemical and physical properties were measured based on the American Society for Testing and Materials (ASTM) international standards for biodiesel.","PeriodicalId":46053,"journal":{"name":"Environmental and Climate Technologies","volume":"60 1","pages":"968 - 981"},"PeriodicalIF":1.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84929314","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mitigating Overvoltage in Power Grids with Photovoltaic Systems by Energy Storage 利用储能技术缓解光伏系统电网过电压

IF 1.4

Environmental and Climate Technologies Pub Date : 2022-01-01 DOI: 10.2478/rtuect-2022-0036

Sarah Landl, Harald Kirchsteiger

引用次数: 2

Life Cycle Sustainability Evaluation of Potential Bioenergy Development for Landfills in Colombia 哥伦比亚垃圾填埋场潜在生物能源开发的生命周期可持续性评价

IF 1.4

Environmental and Climate Technologies Pub Date : 2022-01-01 DOI: 10.2478/rtuect-2022-0035

Mabell Ruiz, Fabian Diaz

{"title":"Life Cycle Sustainability Evaluation of Potential Bioenergy Development for Landfills in Colombia","authors":"Mabell Ruiz, Fabian Diaz","doi":"10.2478/rtuect-2022-0035","DOIUrl":"https://doi.org/10.2478/rtuect-2022-0035","url":null,"abstract":"Abstract The Colombian energy matrix faces significant changes toward meeting its energy needs while fulfilling its pledges in the Intended National Determined Contributions linked to the Paris Agreement. The country has developed a plan for energy transition with a 2050 horizon, a strategy reflected and supported by new legislative packages. Within its design, biomass and biomass waste play a vital role in bioenergy production; however, the benefits of deploying new bioenergy production facilities have not been fully accounted for, including only an economic and climate change perspective. In this work, a Life Cycle Sustainability Assessment of a potential bioenergy plant for industrial symbiosis with the largest landfill in the country is undertaken, avoiding environmental burden shifting between environmental damage categories and exposing the social potential of such projects. The results show how these types of projects are economically feasible and have the potential to boost the sustainable development of local communities, which under the Colombian context, have been structurally relegated from conventional economic growth for decades.","PeriodicalId":46053,"journal":{"name":"Environmental and Climate Technologies","volume":"46 1","pages":"454 - 469"},"PeriodicalIF":1.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85686470","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Environmental and Economic Advantages of Disposal of Phosphoric Industry Waste 磷工业废物处理的环境和经济效益

IF 1.4

Environmental and Climate Technologies Pub Date : 2022-01-01 DOI: 10.2478/rtuect-2022-0012

M. Shanbayev, K. Turgumbayeva, D. Blumberga, Aziza Aipenova, T. Beisekova

{"title":"Environmental and Economic Advantages of Disposal of Phosphoric Industry Waste","authors":"M. Shanbayev, K. Turgumbayeva, D. Blumberga, Aziza Aipenova, T. Beisekova","doi":"10.2478/rtuect-2022-0012","DOIUrl":"https://doi.org/10.2478/rtuect-2022-0012","url":null,"abstract":"Abstract The article presents the types and classification of waste from the phosphorus industry of the Zhambyl region of the Republic of Kazakhstan. Waste is classified by its use as recyclable materials for construction materials. The results of a comparative assessment of the physical, chemical and structural properties of the phosphorus industry waste are presented. The article shows that all studied types of waste have astringent properties and can be used as building materials. In this work, a study of the properties of large-tonnage wastes of the phosphorus industry was carried out: 1) electrothermophosphoric granular slag (granulated slag); 2) phosphogypsum; 3) overburden. A technology has been developed for producing non-fired binders from waste of the phosphorus industry and a methodology for designing the composition of raw mixtures of multicomponent building composites has been proposed. Pilot tests and calculation of technical and economic indicators have been carried out, which have shown the economic feasibility of producing a non-firing binder for the construction industry from phosphorus production waste.","PeriodicalId":46053,"journal":{"name":"Environmental and Climate Technologies","volume":"299 1","pages":"143 - 154"},"PeriodicalIF":1.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75924297","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

First Results on the Removal of Emerging Micropollutants from Municipal Centrate by Microalgae 微藻去除城市污水中新兴微污染物的初步结果

IF 1.4

Environmental and Climate Technologies Pub Date : 2022-01-01 DOI: 10.2478/rtuect-2022-0004

V. Mezzanotte, F. Marazzi, E. Ficara, M. Mantovani, S. Valsecchi, Francesca Cappelli

引用次数: 3

PCM Modified Gypsum Hempcrete with Increased Heat Capacity for Nearly Zero Energy Buildings 提高近零能耗建筑热容量的PCM改性石膏麻混凝土

IF 1.4

Environmental and Climate Technologies Pub Date : 2022-01-01 DOI: 10.2478/rtuect-2022-0040

G. Bumanis, D. Bajare

{"title":"PCM Modified Gypsum Hempcrete with Increased Heat Capacity for Nearly Zero Energy Buildings","authors":"G. Bumanis, D. Bajare","doi":"10.2478/rtuect-2022-0040","DOIUrl":"https://doi.org/10.2478/rtuect-2022-0040","url":null,"abstract":"Abstract Low energy building materials based on natural and renewable resources have become popular among customers. The natural occurrence of the raw materials and the idea to move closer to nature with its natural products have brought high interest in hempcrete. Hempcrete is a kind of binder-aggregate material where besides mineral binder, hemp shive aggregate act as a filler. A good technical performance of such composites has been reported before, while the term an ‘advanced material’ for traditional hempcrete lacks some superior properties for civil engineers. This research offers advanced hempcrete-type material where gypsum binder and hemp shives are used as the main components. Additionally, phase change material (PCM) was incorporated into the mixture composition to increase their thermal mass. PCM gives additional thermal heat storage for buildings which makes the building envelope more homogenous regarding thermal stability under outer temperature fluctuations. This could give additional comfort during heating and cooling seasons. Up to 20 wt.% of microencapsulated PCM suspension had been added to the hempcrete mixture composition and heat capacity was calculated and validated with differential scanning calorimetry measurements. Physical and mechanical performance was also evaluated. Results indicate that in the temperature interval from 20 to 30 °C, the heat capacity of hempcrete can be increased to 1901 J/(gK) (by 70.4 %) and it correlates well with theoretical thermal mass calculation. This gives promising results for further development of the material and proves the feasibility of PCM integration in hempcrete.","PeriodicalId":46053,"journal":{"name":"Environmental and Climate Technologies","volume":"25 5","pages":"524 - 534"},"PeriodicalIF":1.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72479084","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

A Study on a Recuperative Suspension as an Alternative Energy Source 可再生悬液作为替代能源的研究

IF 1.4

Environmental and Climate Technologies Pub Date : 2022-01-01 DOI: 10.2478/rtuect-2022-0017

Omari Zizivadze, Isidore Kachakhidze, A. Geguchadze, B. Zivzivadze, Anzor Kuparadze, Nata Sulakvelidze

引用次数: 0