2011 IEEE Conference on Clean Energy and Technology (CET)最新文献_第6页

Utilization ultrasonic to increase the efficiency of oil extraction for microalgae indigenous isolates from pond gresik, east java 利用超声波提高东爪哇格里西克池塘微藻原生分离物的提油效率

2011 IEEE Conference on Clean Energy and Technology (CET) Pub Date : 2011-06-27 DOI: 10.1109/CET.2011.6041496

E. Suarsini, S. Subandi

{"title":"Utilization ultrasonic to increase the efficiency of oil extraction for microalgae indigenous isolates from pond gresik, east java","authors":"E. Suarsini, S. Subandi","doi":"10.1109/CET.2011.6041496","DOIUrl":"https://doi.org/10.1109/CET.2011.6041496","url":null,"abstract":"The prospect of microalgae biomass as biodiesel is a renewable energy to substitute for petroleum. Identification of microalgae indigenous from Gresik ponds, East Java are 29 species, and at Biological laboratory, Science Faculty, UM was able to isolate 10 species. Among the isolated, there are 2 species that faster growth rate, Chlorella vulgaris and Spirogyra sp. Generally, extraction of oil from microalgae biomass requires a long time. The aims from the research are to examine three methods of oil extraction from the two species of microalgae, the experimental laboratory techniques. Biomass of microalgae dry powder was extracted using the solvent n-hexane by three methods, Soxhlet, maceration and ultrasonic waves. On the acquisition of microalgae oil the yield equivalent, compared with extraction time from the three methods. The smaller time of microalgae oil extraction is the more efficient extraction. The results showed: (1) The use of ultrasonic waves can improve the efficiency of microalgae oil extraction. (2) The yield of algae oil which is extracted using the method Soxhlet, maceration, and extraction with the aid of ultrasonic waves in a row is 1.58%, 1.03%, and 1.77% by the time it takes for 18 hours, 8 hours, and 2.33 hours.","PeriodicalId":360345,"journal":{"name":"2011 IEEE Conference on Clean Energy and Technology (CET)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126734749","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: 6

Temperature dependence of biomass combustion kinetics 生物质燃烧动力学的温度依赖性

2011 IEEE Conference on Clean Energy and Technology (CET) Pub Date : 2011-06-27 DOI: 10.1109/CET.2011.6041462

H. Saptoadi, T. A. Rohmat, A. Pratoto

{"title":"Temperature dependence of biomass combustion kinetics","authors":"H. Saptoadi, T. A. Rohmat, A. Pratoto","doi":"10.1109/CET.2011.6041462","DOIUrl":"https://doi.org/10.1109/CET.2011.6041462","url":null,"abstract":"Biomass residues, such as rice straw, are available abundantly in most Asian countries, where rice is replaceable. In order to better utilize the wastes as fuels, they are pyrolyzed prior to its briquetting in order to improve the Heating Value and carbon content. The pyrolysis process is carried out at 400°C for 30 minutes. The heat required for pyrolysis is supplied by electric resistance nickel wires coiled around the cylindrical reactor. The obtained char is crushed, mixed with natural binding material and then briquetted in form of a bar with rectangular cross sections 16 × 16 mm and height between 28 – 35 mm. The briquettes weigh around 5 gram, consists of 4 gram char and 1 gram binder. Subsequently the briquettes undergo combustion process in the same reactor but the wall temperature is kept constant at 350 °C, while the initial temperature of the combustion process is varied 125 °C, 150 °C, 175 °C, 200 °C, and 225 °C. The observed combustion processes (represented by reaction rates, combustion periods and maximum temperatures) reveal their strong dependence on briquette temperatures, as shown in the Arrhenius formula. The acquired thermogravimetry data (temperatures and masses) are stored and analyzed in order to determine the Activation Energy and Pre-exponential Coefficient of the combustion kinetics. The activation energy varies between 87 and 370 kJ/mol, while the Pre-exponential Coefficient changes even more terribly between 195,000 and 8.54 × 1035 m/s. Theoretically, these values should be closely similar, because they should be specific to carbon, regardless of the source material, the process, and the initial temperature. Nevertheless, since combustion of solids is highly unstable, the acquired fluctuated data lead to these varying results.","PeriodicalId":360345,"journal":{"name":"2011 IEEE Conference on Clean Energy and Technology (CET)","volume":"206 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132331560","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

Development of mini scale compressed air energy storage system 小型压缩空气储能系统的研制

2011 IEEE Conference on Clean Energy and Technology (CET) Pub Date : 2011-06-27 DOI: 10.1109/CET.2011.6041477

A. Khamis, Zulasyraf M. Badarudin, Azhar Ahmad, Azhan Ab. Rahman, N. A. Bakar

引用次数: 11

Global solar energy use and social viability in Malaysia 全球太阳能的使用和马来西亚的社会可行性

2011 IEEE Conference on Clean Energy and Technology (CET) Pub Date : 2011-06-27 DOI: 10.1109/CET.2011.6041461

M. S. Hossain, N. Rahim, K. H. Solangi, R. Saidur, H. Fayaz, N. Madlool

{"title":"Global solar energy use and social viability in Malaysia","authors":"M. S. Hossain, N. Rahim, K. H. Solangi, R. Saidur, H. Fayaz, N. Madlool","doi":"10.1109/CET.2011.6041461","DOIUrl":"https://doi.org/10.1109/CET.2011.6041461","url":null,"abstract":"Along with the enhancement of technology and alarming of global warming, various types of technologies are advanced worldwide nowadays to harness the energy from the sun such as solar thermal energy, ocean thermal energy conversion, solar ponds, solar tower and photovoltaic systems to utilize the energy in the majority of domestic applications and industrial sector to a certain extent. Subsequently, gradual increase usage of solar energy requires creating awareness among public to protect the environment in term of green campaign which is one of the hot topics among the Malaysians where there are many organizations organizing green campaign such as Environmental Protection Society Malaysia (EPSM), Malaysia Environment NGOs (MENGO) and Treat Every Environment Special Sdn. Bhd. (TRESS). Therefore, this study examines solar energy production and consumption worldwide by looking at various existing solar technologies to have the understanding of each technology. This article also intends to catch up specifically the social viability of solar energy production and use, with the availability of the resources for the full scale development.","PeriodicalId":360345,"journal":{"name":"2011 IEEE Conference on Clean Energy and Technology (CET)","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114454346","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: 9

Microwave material processing for green technology 微波材料加工为绿色技术

2011 IEEE Conference on Clean Energy and Technology (CET) Pub Date : 2011-06-27 DOI: 10.1109/CET.2011.6041500

T. Sonobe

引用次数: 8

Low voltage ride through capability of fuel cell generation system connected to low voltage network 连接低压电网的燃料电池发电系统的低压穿越能力

2011 IEEE Conference on Clean Energy and Technology (CET) Pub Date : 2011-06-27 DOI: 10.1109/CET.2011.6041511

M. Wanik, A. Mohamed, A. Kadir, I. Erlich

引用次数: 13

DSP-based maximum peak power tracker using P&O algorithm 采用P&O算法的dsp最大峰值功率跟踪器

2011 IEEE Conference on Clean Energy and Technology (CET) Pub Date : 2011-06-27 DOI: 10.1109/CET.2011.6041455

N. Razali, N. Rahim

引用次数: 18

Design analysis of low-pass passive filter in single-phase grid-connected transformerless inverter 单相无变压器并网逆变器低通无源滤波器设计分析

2011 IEEE Conference on Clean Energy and Technology (CET) Pub Date : 2011-06-27 DOI: 10.1109/CET.2011.6041489

M. Azri, N. Rahim

引用次数: 24

Syntheses, characterizations and testings of carbon nanofiber for hydrogen adsorption studies 碳纳米纤维的合成、表征及吸氢性能研究

2011 IEEE Conference on Clean Energy and Technology (CET) Pub Date : 2011-06-27 DOI: 10.1109/CET.2011.6041473

N. Shah, S. Sufian, S. Yusup

{"title":"Syntheses, characterizations and testings of carbon nanofiber for hydrogen adsorption studies","authors":"N. Shah, S. Sufian, S. Yusup","doi":"10.1109/CET.2011.6041473","DOIUrl":"https://doi.org/10.1109/CET.2011.6041473","url":null,"abstract":"Renewable energy (RE) has been declared as the fifth fuel of Malaysia in addition to oil, gas, coal and hydropower. One of RE which is hydrogen and has became an alternative fuel for transportation instead of petroleum. For sufficient hydrogen storage, the system requires an inexpensive, safe, low weight tank, comparable in to a gasoline tank with capability of quick loading and unloading hydrogen fuel. Carbon nanomaterials have been nominated as one of the best medium to store hydrogen due to its light weight, low cost production depending upon types of synthesis methods, non-toxic and can be generated with improvement in its storage capacity. The research work focuses on the development of graphitic nanofibers by using chemical vapor deposition method. The development of catalyst which was iron (III) oxide and nickel (II) oxide for the synthesis of graphitic nanofibers has also been investigated. The capacity of the developed materials in hydrogen adsorption is tested at 298K and the pressure up to 100 bar using gravimetric measurement technique. Sample imaging observations using field emission electron microscopy (FESEM) and transmission electron microscopy (TEM) indicate that the synthesized graphitic nanofibers (GNFs) have both platelet and herringbone structure with little carbon nanotubes (CNTs). Iron-based catalyst GNF (FG) samples have diameter size of 170 nm while nickel-based catalyst GNF (NG) has diameter size of 200 nm. Specific BET surface area of FG and NG are 92.34 m2/g and 45.96 m2/g, respectively. Both analysis which are energy-dispersive X-ray (EDX) and thermogravimetric proved that purity of FG is between 88% to 95% while purity of NG is ranges from 95% to 97%. For iron-based catalyst GNF, the highest uptake is 0.46wt % at 70 bar and for nickel-based catalyst GNF, the highest uptake is 1.7611wt % at 70 bar.","PeriodicalId":360345,"journal":{"name":"2011 IEEE Conference on Clean Energy and Technology (CET)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128218327","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

Conversion of glycerol to methanol in the presence of zeolite based catalysts 在沸石基催化剂的存在下，甘油转化为甲醇

2011 IEEE Conference on Clean Energy and Technology (CET) Pub Date : 2011-06-27 DOI: 10.1109/CET.2011.6041503

M. Mohamed, T. Sie Ting, N. Amin, T. Abdullah, R. Mat

引用次数: 8