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Samari Mohammad Ridha Firas Manovic Vasilije Macchi Arturo Anthony E. J. 《Mitigation and Adaptation Strategies for Global Change》2020,25(1):25-41
Mitigation and Adaptation Strategies for Global Change - Direct air capture (DAC) is a developing technology for removing carbon dioxide (CO2) from the atmosphere or from low-CO2-containing... 相似文献
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Firas Shawash Khalid Moinuddin Ian Thomas 《Journal of Loss Prevention in the Process Industries》2009,22(4):540-550
The LASTFIRE test is intended for the evaluation of foams used in extinguishing fires of flammable and combustible liquids in storage tanks in refinery and oil related facilities. The purpose of this study is to find, experimentally, an alternative fuel to be used in the LASTFIRE test, as a replacement for the heptane fuel, which is normally used in this test. Beside heptane, three other fuels are tested in the current study: diesel, jet A1 and kerosene. The study involved performing the LASTFIRE test, using each of the fuels and then comparing the results. The same foam is used as an extinguishing agent for all the tests and for each fuel, tests are conducted three times with separate foam discharging nozzles: semi-aspirated, aspirated and system. Using a commonly used scoring system, the results of the four fuels are evaluated. Any replaceable fuel should obtain the similar score as that is obtained by heptane. The study shows that none of the three alternatives has been judged to be suitable to replace heptane, in the LASTFIRE test. 相似文献
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The present work presents a study of the biological treatment of fish processing wastewater at salt concentration of 55 g/L. Wastewater was treated by both continuous stirred-tank reactor (CSTR) and membrane bioreactor (MBR) during 50 and 100 days, respectively. These biological processes involved salt-tolerant bacteria from natural hypersaline environments at different organic loading rates (OLRs). The phylogenetic analysis of the corresponding excised DGGE bands has demonstrated that the taxonomic affiliation of the most dominant species includes Halomonadaceae and Flavobacteriaceae families of the Proteobacteria (Gamma-proteobacteria class) and the Bacteroidetes phyla, respectively. The results of MBR were better than those of CSTR in the removal of total organic carbon with efficiencies from 97.9% to 98.6%. Nevertheless, salinity with increasing OLR aggravates fouling that requires more cleaning for a membrane in MBR while leads to deterioration of sludge settleability and effluent quality in CSTR. 相似文献
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The phosphate fertilizer industry produces highly hazardous and acidic wastewaters. This study was undertaken to develop an integrated approach for the treatment of wastewaters from the phosphate industry. Effluent samples were collected from a local phosphate fertilizer producer and were characterized by their high fluoride and phosphate content. First, the samples were pretreated by precipitation of phosphate and fluoride ions using hydrated lime. The resulting low- fluoride and phosphorus effluent was then treated with the enhanced biological phosphorus removal (EBPR) process to monitor the simultaneous removal of carbon, nitrogen, and phosphorus. Phosphorus removal included a two-stage anaerobic/aerobic system operating under continuous flow. Pretreated wastewater was added to the activated sludge and operated for 160 days in the reactor. The operating strategy included increasing the organic loading rate (OLR) from 0.3 to 1.2 g chemical oxygen demand (COD)/L.d. The stable and high removal rates of COD, NH4(+)-N, and PO4(3-)-P were then recorded. The mean concentrations of the influent were approximately 3600 mg COD/L, 60 mg N/L, and 14 mg P/L, which corresponded to removal efficiencies of approximately 98%, 86%, and 92%, respectively. 相似文献
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Mounir Ben Mbarek Nadia Ben Ali Rochdi Feki 《Environment, Development and Sustainability》2014,16(6):1253-1262
This article analyzes the causality between the economic growth, the energy and the environment, measured by CO2 emissions. Our empirical study is based on a series of annual data from 1980 to 2010 in Tunisia. Our study was conducted using the Granger causality test and variance decomposition. The empirical results confirm the presence of a positive effect between the energy consumption and the economic growth measured by gross domestic product (GDP). Thus, there is a unidirectional relationship between GDP and CO2 emissions in the short term. This analysis shows, as is common to relatively fast-growing economies in Tunisia, that the biggest contributor to the rise is CO2 emissions. Hence, in congruence with the result of variance decomposition, the GDP affects CO2 emissions in the short and medium term at an almost constant level (10 %). The non-renewable energy intensity in Tunisian economy is responsible for a modest reduction in CO2 emissions, which suggests the implementation of conservation policies aimed at energy efficiency and the orientation toward renewable energy. 相似文献
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Koubaa Fatma Ghorbel Chaâbane Mariem Turki Mouna Ayadi Fatma Makni El Feki Abdelfattah 《Environmental science and pollution research international》2021,28(9):11001-11015
Environmental Science and Pollution Research - The present study was designed to evaluate the protective effects of Salvia officinalis essential oil (SOEO) against vanadium-induced hepatotoxicity... 相似文献
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Feki Kaouthar Tounsi Sana Mrabet Moncef Mhadhbi Haythem Brini Faiçal 《Environmental science and pollution research international》2021,28(46):64967-64986
Environmental Science and Pollution Research - Among abiotic stress, the toxicity of metals impacts negatively on plants’ growth and productivity. This toxicity promotes various perturbations... 相似文献
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