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151.
Ziyad Tariq Abdullah 《环境质量管理》2023,32(4):223-235
Construction is a major contributor to the solid waste stream globally and various recycling strategies are being evaluated to recover valuable resources. As a novel strategy, remanufacturing waste reinforcing steel bar (rebar) pieces from concrete waste to produce nails was applied on an industrial scale to prove the technical feasibility, where a group of alternatives were developed based on commercially available industrial machinery. The calculated economic and environmental feasibility values are sufficiently high for industrial application, and the most appropriate remanufacturing technological alternative was identified. The sustainability equation was solved to find the social feasibility and overall remanufacturing sustainability index. Rebar waste remanufacturing has a high triple-bottom-line sustainability index of 0.885. Based on the proposed process, small remanufacturing companies can be developed, thereby aiding employment and human development by earning profit of 1904–8880 USD/day. The findings of this study are beneficial to decision makers in government and industry and are globally relevant because concrete waste is ubiquitous worldwide. 相似文献
152.
An evaluation of ~250 samples of groundwater in the Amman Zarqa Basin for selenium along with other major and trace elements
showed that concentrations of Se ranged between 0.09 and 742 μg/L, with an average value of about 24 μg/L. Selenium concentrations
exceeded the recommended threshold for drinking water of the World Health Organization (WHO; 10 μ/L of Se) in 114 samples,
with greater than 50 μg/L (quantity equivalent to the Jordanian standard of the allowed concentration of the element in water)
of Se in nine cases. The average concentrations of Se in the lower, middle, and upper aquifers of the basin were 3.41, 32.99,
and 9.19 μg/L, respectively. Based on the correlation with geologic formations and the statistical analysis of major/minor
constituents and Piper tri-linear diagrams, we suggest that carbonate/phosphate dissolution, oxidation–reduction processes,
and fertilizers/irrigation return flow are, together, the primary factors affecting the chemistry of the groundwater. Factor
analysis helped to define the relative role of limestone-dolomitic dissolution in the aquifers (calcium, magnesium, and bicarbonate),
agricultural activities (sulfate, nitrates, phosphorus, and potassium), oxidation–reduction factor (Eh, Fe, Mn, Cu, Zn, and
Se), and anthropogenic (industrial) factor (EC, Fe, Cr, Co, Zn, and As). The high variability in Se concentrations might be
related to the possibility of a multi-source origin of Se in the area. 相似文献
153.
154.
Hassimi Abu Hasan Siti Rozaimah Sheikh Abdullah Siti Kartom Kamarudin Noorhisham Tan Kofli 《Process Safety and Environmental Protection》2013,91(5):415-422
The biological aerated filter (BAF) system, a new alternative in drinking water treatment, was designed to remove NH4+–N and Mn2+ simultaneously. This study aimed to control the aeration time in the BAF system for simultaneous NH4+–N and Mn2+ removal to achieve the Malaysian effluent quality regulation for drinking water. The experiment was conducted under four strategies of S1, S2, S3 and S4. The results demonstrated that acceptable levels of NH4+–N and Mn2+ were achieved over a 6 h aeration period (S1), producing effluent concentrations of 0.7 mg/L (93.2% removal) and 0.08 mg/L (79.6% removal), respectively. At the initial treatment of S1 and S2, the dissolved oxygen (DO) level rapidly increased until it reached a saturated concentration (6.8 mg/L DO) after 2 h period. Automatic on–off aeration time to maintain 3 mg/L DO set point (S4) resulted with a good effluent quality of NH4+–N and Mn2+ compared with the 2 mg/L DO set point (S3) which did not meet the regulated standard limits. Through the automatic on–off aeration time, the saturated and excessive DO levels in the BAF system can be avoided consequently reduce the wastage of energy and electrical consumption for simultaneous NH4+–N and Mn2+ removal from drinking water treatment. 相似文献
155.
Hasan Mehedi Al Biruni Mir Tanvir Afia Antara Ahmed Tanvir 《Journal of Material Cycles and Waste Management》2022,24(6):2656-2668
Journal of Material Cycles and Waste Management - The recycling potential of water treatment plant (WTP) sludge in asphalt concrete mixes as filler material was assessed in this study. Marshall... 相似文献
156.
Kelleci Orhan Aydemir Deniz Altuntas Ertuğrul Kurt Rıfat Oztel Ahmet Yorur Hüseyin Istek Abdullah 《Journal of Polymers and the Environment》2022,30(7):3091-3106
Journal of Polymers and the Environment - The aim of this study was to investigate the physical, mechanical, morphological, structural, and thermal properties of polylactic acid (PLA) and... 相似文献
157.
Nasser Ibrahim Mohammed Ibrahim Mohd Haziman Wan Zuki Sharifah Salwa Mohd Algaifi Hassan Amer Alshalif Abdullah Faisal 《Environmental science and pollution research international》2022,29(11):15318-15336
Environmental Science and Pollution Research - Exposing concrete to high temperatures leads to harmful effects in its mechanical and microstructural properties, and ultimately to total failure. In... 相似文献
158.
Rauf Abdur Shariati Mohammad Ali Imran Muhammad Bashir Kashif Khan Shahid Ali Mitra Saikat Emran Talha Bin Badalova Kamala Uddin Md. Sahab Mubarak Mohammad S. Aljohani Abdullah S. M. Alhumaydhi Fahad A. Derkho Marina Korpayev Serdar Zengin Gokhan 《Environmental science and pollution research international》2022,29(21):31025-31041
Environmental Science and Pollution Research - Though the incidence of several cancers in Western societies is regulated wisely, some cancers such as breast, lung, and colorectal cancer are... 相似文献
159.
Urban stormwater runoff pollutant loadings: GIS land use classification vs. sample-based predictions
Al Masum Abdullah Bettman Nathan Read Scott Hecker Markus Brinkmann Markus McPhedran Kerry 《Environmental science and pollution research international》2022,29(30):45349-45363
Environmental Science and Pollution Research - Cities are growing worldwide with an increase in stormwater quantity and decrease in quality, negatively impacting receiving water bodies. The... 相似文献
160.
Abdo AL-Barakani Li Bin Qahtan Anwar Saeed Ahmed Abdulsalam Alnoah Aloqab Abdullah Obadi Waleed 《Environmental science and pollution research international》2022,29(36):54571-54595
Environmental Science and Pollution Research - Indeed, the Belt and Road Initiative (BRI) plays an increasingly important role in global economic and climate change mitigation. However, scientists... 相似文献