排序方式: 共有21条查询结果,搜索用时 31 毫秒
11.
Bahari M. B. Mamat C. R. Jalil Aishah Abdul Siang T. J. Hassan N. S. Khusnun N. F. Nabgan W. Roslan N. A. Abidin S. Z. Setiabudi H. D. Vo D.-V. N. 《Environmental Chemistry Letters》2022,20(4):2361-2384
Environmental Chemistry Letters - Rising energy needs and the exhaustion of fossil fuels are calling for renewable fuels such as dihydrogen (H2), commonly named 'hydrogen.' Biomass... 相似文献
12.
bin Mohamed Rashid Mohamad Rohaidzat Mijarsh Mustafa Juma A. Seli Hazman Johari Megat Azmi Megat Ahmad Zainal Arifin 《Journal of Material Cycles and Waste Management》2018,20(2):1090-1098
Journal of Material Cycles and Waste Management - This study focuses on the potential usage of sago pith waste ash (SPWA) obtained from sago pith waste (SPW) calcined from 500 to... 相似文献
13.
Balasbaneh Ali Tighnavard Yeoh David Juki Mohd Irwan Ibrahim Mohd Haziman Wan Abidin Ahmad Razin Zainal 《Environmental science and pollution research international》2021,28(28):37387-37399
Environmental Science and Pollution Research - This research aims to assess the sustainability of the most common earth-retaining walls (Gravity Walls and Cantilever Walls) in terms of... 相似文献
14.
Evaluation of chemical stability of heavy metals in industrial waste slag by infrared spectroscopy 总被引:1,自引:1,他引:0
Takao Ando Mayumi Jige Hirotomo Ueno Teruo Henmi Zaenal Abidin Naoto Matsue 《Journal of Material Cycles and Waste Management》2010,12(4):302-307
Our aim was to clarify the chemical bonding type and stability of heavy metals in industrial waste slag (IWS) by using Fourier
transform infrared (FT-IR) spectroscopy. The chemical composition of the IWS sample used in this study was an Al/Si ratio
of 0.50 with Fe, Pb, and other minor heavy metals present. The IR peak position of the Si-OSi( M) band (M: Al, Pb, or Fe)
was lower for IWS (971 cm−1) than for synthetic Si-Al glass with an Al/Si ratio of 0.5 (1029 cm−1). This implies the formation of covalent Si-O-Pb and Si-O-Fe bonds in the IWS, which caused a shift in the peak position
toward a lower wavenumber. FT-IR spectra of synthetic Si-Al-Pb and Si-Al-Fe glasses with various Pb/Si and Fe/Si ratios with
a constant Al/Si ratio of 0.5 showed that the peak position of the Si-O-Si(M) band continuously shifted toward lower wavenumbers
with increasing Pb/Si and Fe/Si ratios. This suggests that covalent Si-O-Pb and Si-O-Fe bonds are formed in IWS. The comparison
of peak positions of the Si-O-Si(M) band between IWS and Si-Al-Fe glass indicated that not only Pb but also other minor heavy
metals such as Cu and Cr were included by covalent bonds into the structure of IWS. Therefore, we concluded that most of the
heavy metals in IWS formed covalent Si-O-M bodings and were chemically stable. 相似文献
15.
Many studies have been conducted to investigate thephysicochemical behavior of pure clay minerals and predicttheir engineering performance in the field. In this study, thephysicochemical properties of an artificial mixture of differentclay minerals namely, 40-50% montmorillonite, 20-30% illite and 10-15% kaolin were investigated. The mixture was homoionized with sodium, Na+; calcium, Ca2+; andaluminum, Al3+. The engineering properties studied wereconsistency limits, sediment volume, compressibility behavior,and hydraulic conductivity. The results revealed that theliquid, plastic and shrinkage limits of soil increased withincreasing cation valence. The hydraulic conductivity of thesoil also increased with an increase in the valence of thecation at any given void ratio. Aluminum and sodium treatedclays had the highest and the lowest modified compressionindex values, respectively. Furthermore, trivalent cationsaturated clayey soil consolidates three times faster thanthat of monovalent and two times faster than that of divalent.These properties of the soils determined were, in general,similar to those of kaolinite rather than those ofmontmorillonite. The comparison of the results obtained withthe published data in the literature revealed that thephysicochemical behavior of the tested clay soil was, ingeneral, similar to that of kaolinite. 相似文献
16.
Use of lignite in power generation has led to increasing environmental problems associated not only with gaseous emissions, but also with the disposal of ash residues. In particular, use of low quality coals with high ash content results in huge quantities of both fly and bottom ashes to be disposed of. A main problem related to coal ash disposal is the heavy metal content of the residue. In this regard, experimental results of numerous studies indicate that toxic trace metals may leach when fly and bottom ashes are in contact with water. In this study, fly and bottom ash samples obtained from thermal power plants, namely Yenikoy, Kemerkoy and Yatagan, located at the southwestern coast of Turkey, were subjected to toxicity tests such as the extraction (EP) and toxicity characteristic leaching (TCLP) procedures of the US Environmental Protection Agency (USEPA) and the so-called 'Method A' extraction procedure of the American Society of Testing and Material (ASTM). The geochemical composition of ash samples showed variations depending on the coal burned in the plants. Furthermore, the EP, TCLP and ASTM toxicity tests showed variations such that the ash samples were classified as 'toxic waste' based on EP and TCLP results whereas they were classified as 'non-toxic' based on ASTM results, indicating test results are pH dependent. When the extraction results were compared with the chemical composition of water samples obtained in the vicinity of the thermal power plants, it was found that the results obtained using the ASTM procedure cannot be used to predict subsurface contamination whereas the EP and TCLP procedures can be used. 相似文献
17.
Production of hydrogen and value-added carbon materials by catalytic methane decomposition: a review
Pham Cham Q. Siang Tan Ji Kumar Ponnusamy Senthil Ahmad Zainal Xiao Leilei Bahari Mahadi B. Cao Anh Ngoc T. Rajamohan Natarajan Qazaq Amjad Saleh Kumar Amit Show Pau Loke Vo Dai-Viet N. 《Environmental Chemistry Letters》2022,20(4):2339-2359
Environmental Chemistry Letters - Dihydrogen (H2), commonly named “hydrogen”, is attracting research interest due to potential applications in fuel cells, vehicles, pharmaceuticals and... 相似文献
18.
Hagos Ftwi Y. Abd Aziz Abd Rashid Zainal Ezrann Zharif Mofijur M. Ahmed Shams Forruque 《Environmental Chemistry Letters》2022,20(1):263-281
Environmental Chemistry Letters - Globally, 150–170 billion cubic metres of gas are being flared annually from petroleum refineries, petrochemical industries and from landfills. In this... 相似文献
19.
Shafiqah Mohd-Nasir Nor Siang Tan Ji Kumar Ponnusamy Senthil Ahmad Zainal Jalil A. A. Bahari Mahadi B. Van Le Quyet Xiao Leilei Mofijur M. Xia Changlei Ahmed Shams Forruque Vo Dai-Viet N. 《Environmental Chemistry Letters》2022,20(3):1695-1718
Environmental Chemistry Letters - There is actually an intense research in ethanol dry reforming because bioethanol and carbon dioxide, a greenhouse gas, can be converted into syngas and,... 相似文献
20.
Shaladi Ramzi J. Johari Megat Azmi Megat Ahmad Zainal Arifin Mijarsh Mustafa Juma A. 《Environmental science and pollution research international》2022,29(48):72493-72514
Environmental Science and Pollution Research - The current study aims to explore the impact of palm oil fuel ash (POFA) heat treatment on the strength activity, porosity, and water absorption of... 相似文献