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Institution

Universiti Teknologi Malaysia

EducationJohor Bahru, Malaysia
About: Universiti Teknologi Malaysia is a education organization based out in Johor Bahru, Malaysia. It is known for research contribution in the topics: Membrane & Control theory. The organization has 21644 authors who have published 39500 publications receiving 520635 citations.


Papers
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Journal ArticleDOI
TL;DR: In this article, the state-of-the-art hydrogen production technologies using renewable and sustainable energy resources are presented, including supercritical water gasification (SCWG) of biomass is the most cost effective thermochemical process.
Abstract: Fossil fuel consumption in transportation system and energy-intensive sectors as the principal pillar of civilization is associated with progressive release of greenhouse gases. Hydrogen as a promising energy carrier is a perfect candidate to supply the energy demand of the world and concomitantly reduce toxic emissions. This article gives an overview of the state-of-the-art hydrogen production technologies using renewable and sustainable energy resources. Hydrogen from supercritical water gasification (SCWG) of biomass is the most cost effective thermochemical process. Highly moisturized biomass is utilized directly in SCWG without any high cost drying process. In SCWG, hydrogen is produced at high pressure and small amount of energy is required to pressurize hydrogen in the storage tank. Tar and char formation decreases drastically in biomass SCWG. The low efficiency of solar to hydrogen system as well as expensive photovoltaic cell are the most important barriers for the widespread commercial development of solar-based hydrogen production. Since electricity costs play a crucial role on the final hydrogen price, to generate carbon free hydrogen from solar and wind energy at a competitive price with fossil fuels, the electrical energy cost should be four times less than commercial electricity prices.

1,359 citations

01 Jun 2007
TL;DR: In this article, the authors discuss several aspects of case studies as a research method, including the design and categories of case study and how their robustness can be achieved, as well as the advantages and disadvantages of case-study methods as research methods.
Abstract: Although case study methods remain a controversial approach to data collection, they are widely recognised in many social science studies especially when in-depth explanations of a social behaviour are sought after. This article, therefore, discusses several aspects of case studies as a research method. These include the design and categories of case studies and how their robustness can be achieved. It also explores on the advantages and disadvantages of case study as a research method.

1,336 citations

Journal ArticleDOI
TL;DR: In this article, the status and current trends of energy consumption, CO2 emissions and energy policies in the residential sector, both globally and in those ten countries, were reviewed, and it was found that global residential energy consumption grew by 14% from 2000 to 2011, where population, urbanization and economic growth have been the main driving factors.
Abstract: Climate change and global warming as the main human societies’ threats are fundamentally associated with energy consumption and GHG emissions. The residential sector, representing 27% and 17% of global energy consumption and CO2 emissions, respectively, has a considerable role to mitigate global climate change. Ten countries, including China, the US, India, Russia, Japan, Germany, South Korea, Canada, Iran, and the UK, account for two-thirds of global CO2 emissions. Thus, these countries’ residential energy consumption and GHG emissions have direct, significant effects on the world environment. The aim of this paper is to review the status and current trends of energy consumption, CO2 emissions and energy policies in the residential sector, both globally and in those ten countries. It was found that global residential energy consumption grew by 14% from 2000 to 2011. Most of this increase has occurred in developing countries, where population, urbanization and economic growth have been the main driving factors. Among the ten studied countries, all of the developed ones have shown a promising trend of reduction in CO2 emissions, apart from the US and Japan, which showed a 4% rise. Globally, the residential energy market is dominated by traditional biomass (40% of the total) followed by electricity (21%) and natural gas (20%), but the total proportion of fossil fuels has decreased over the past decade. Energy policy plays a significant role in controlling energy consumption. Different energy policies, such as building energy codes, incentives, energy labels have been employed by countries. Those policies can be successful if they are enhanced by making them mandatory, targeting net-zero energy building, and increasing public awareness about new technologies. However, developing countries, such as China, India and Iran, still encounter with considerable growth in GHG emissions and energy consumption, which are mostly related to the absence of strong, efficient policy.

1,212 citations

Journal ArticleDOI
TL;DR: In this article, the PAN fiber is first stretched and simultaneously oxidized in a temperature range of 200-300°C and then carbonized at about 1000°C in inert atmosphere which is usually nitrogen.

1,166 citations

Journal ArticleDOI
TL;DR: In this paper, the use of activated carbon, oxidation, activated sludge, nanofiltration and reverse osmosis membranes, and their efficiencies in removal of these pollutants, are reviewed.

1,086 citations


Authors

Showing all 21852 results

NameH-indexPapersCitations
Xin Li114277871389
Muhammad Imran94305351728
Ahmad Fauzi Ismail93135740853
Bin Tean Teh9247133359
Muhammad Farooq92134137533
M. A. Shah9258337099
Takeshi Matsuura8554026188
Peter Willett7647929037
Peter C. Searson7437421806
Ozgur Kisi7347819433
Imran Ali7230019878
S.M. Sapuan7071319175
Peter J. Fleming6652924395
Mohammad Jawaid6550319471
Muhammad Tahir65163623892
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
202371
2022347
20212,811
20203,003
20193,148
20182,980