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101.
Three series of polypropylene and waste tire dust (PP/WTD) blends using three different WTD sizes were prepared, compression-molded
and cut into dumbbells. The specimens were exposed to natural weathering in the northern part of Malaysia for a period of
6 months. The results show that at the same blend composition, blends with fine WTD size exhibit higher mechanical properties
than that of blends with coarse WTD after exposure to natural weathering. Regardless of WTD size, the retention of tensile
strength and elongation at break, Eb increases with the increase in WTD content. From the exposed surface morphology, it is apparent that the blends with fine
WTD and WTD-rich blends were able to withstand weathering better than blends with coarse WTD and PP-rich blends. The DSC thermograms
suggest that the overall drop in melting temperature (Tm) of the exposed blends decreases as the WTD content increases. 相似文献
102.
Kolangare Irfana Moideen Isloor Arun Mohan Karim Zulhairun Abdul Kulal Ananda Ismail Ahmad Fauzi Inamuddin Asiri Abdullah Mohamed 《Environmental Chemistry Letters》2019,17(1):581-587
Environmental Chemistry Letters - The removal of toxic dyes from the wastewater and industrial effluents is a major environmental challenge. Various techniques have been employed for the removal of... 相似文献
103.
Umor N. A. Ismail S. Abdullah S. Huzaifah M. H. R. Huzir N. M. Mahmood N. A. N. Zahrim A. Y. 《Journal of Material Cycles and Waste Management》2021,23(5):1726-1736
Journal of Material Cycles and Waste Management - Edible mushroom are grown commercially using lignocellulosic waste by applying a biological process. However after the harvesting season about 70%... 相似文献
104.
Mohd Talib Latif Siti Zawiyah Azmi Ahmad Daud Mohamed Noor Aida Shafawati Ismail Zaharizam Johny Shaharudin Idrus Ahmad Fariz Mohamed Mazlin Bin Mokhtar 《The Environmentalist》2011,31(3):315-324
Studies of air quality were carried out in the towns of Kajang, Nilai and Banting in the Langat River Basin, southern region of Kuala Lumpur to determine the status and trend of air quality. The determination of air quality was based on several parameters such as suspended solids with diameters less than 10???m (PM10) and gaseous pollutants of sulphur dioxide (SO2), nitrogen dioxide (NO2), ozone (O3), and carbon monoxide (CO). Primary concentration data of air pollutants were compiled through fieldwork studies and combined with secondary data obtained from the regular monitoring data as collected by Alam Sekitar Malaysia Sdn. Bhd. (ASMA) on behalf of Malaysian Department of Environment (DOE) at their stations in Kajang and Nilai. Results showed that the average concentrations of PM10, SO2, NO2, O3, and CO at all sampling stations were still below the permissible values recommended by the Malaysian DOE. The level of gaseous pollutants of NO2, O3, and CO was recorded at statistically higher levels (p?<?0.05) than values recorded at the control station at Pangsun Recreational Area. These pollutants were suspected to have originated mainly from exhaust systems of motor vehicles. Data for the years 1996 to 2006 as obtained from ASMA showed long-term air quality trends of increasing O3 and NO2 concentrations in Kajang whilst concentrations of PM10 recorded at both Kajang and Nilai stations were mostly expected coming from transboundary sources especially biomass burning and the development activities around the study areas. 相似文献
105.
Ismail Ahmad Safwan Jawaid Mohammad Hamid Norul Hisham Yahaya Ridwan Hassan Azman Asim M. Supian A. B. M. 《Journal of Polymers and the Environment》2022,30(3):878-885
Journal of Polymers and the Environment - Nowadays, researchers continue studies for alternative materials to replace the redundant petroleum-based products. The combination of various polymer... 相似文献
106.
Sialoblastoma is a rare, locally aggressive, and potentially malignant perinatal salivary tumor that predominantly affects the parotid glands. To date, 29 cases of sialoblastoma have been reported. We report a further case of sialoblastoma diagnosed at 37 weeks of gestation presenting with novel findings that are the premature centromere division and a high level of alpha-fetoprotein. Copyright © 2005 John Wiley & Sons, Ltd. 相似文献
107.
The purpose of this work is to remove Pb(II) from the aqueous solution using a type of hydrogel composite. A hydrogel composite consisting of waste linear low density polyethylene, acrylic acid, starch, and organo-montmorillonite was prepared through emulsion polymerization method. Fourier transform infrared spectroscopy (FTIR), Solid carbon nuclear magnetic resonance spectroscopy (CNMR)), silicon-29 nuclear magnetic resonance spectroscopy (Si NMR)), and X-ray diffraction spectroscope ((XRD) were applied to characterize the hydrogel composite. The hydrogel composite was then employed as an adsorbent for the removal of Pb(II) from the aqueous solution. The Pb(II)-loaded hydrogel composite was characterized using Fourier transform infrared spectroscopy (FTIR)), scanning electron microscopy (SEM)), and X-ray photoelectron spectroscopy ((XPS)). From XPS results, it was found that the carboxyl and hydroxyl groups of the hydrogel composite participated in the removal of Pb(II). Kinetic studies indicated that the adsorption of Pb(II) followed the pseudo-second-order equation. It was also found that the Langmuir model described the adsorption isotherm better than the Freundlich isotherm. The maximum removal capacity of the hydrogel composite for Pb(II) ions was 430 mg/g. Thus, the waste linear low-density polyethylene-g-poly (acrylic acid)-co-starch/organo-montmorillonite hydrogel composite could be a promising Pb(II) adsorbent. 相似文献
108.
This study presents the use of industrial wastewater released from polyvinyl acetate resin manufacturing plant to totally replace the fresh water in concrete composites. Seventy-two laboratory prepared concrete composites were tested to investigate the effect of using various PVAW/C ratios of 0.30, 0.35, 0.40, and 0.45 on the slump, compressive strength, flexural strength, and dry density of the concrete mixes. Results indicated a slight to moderate increase in compressive strength and hard density values compared to those of the control concrete made with fresh water at 7 and 28 day curing. On the contrary, a reduction in the slump values of the PVAW–concrete was observed compared to the slump of the control mixes. However, the slump values increased with increasing the PVAW/C ratios. On the other hand, the waste material leaching test revealed that none of the PVAW toxic constituents was detected. The findings of this work would form basic information for recycling PVAW in concrete mixes and indicate a potential alternative for diminution the adverse effects on the environment posed by the hazardous effluent of the polyvinyl acetate resin industry. 相似文献
109.
110.