排序方式: 共有72条查询结果,搜索用时 203 毫秒
41.
Garba Mustapha D. Usman Muhammad Mazumder Mohammad A. Jafar Al-Ahmed Amir Inamuddin 《Environmental Chemistry Letters》2019,17(3):1195-1208
Environmental Chemistry Letters - Water pollution by human activities is major issue. In particular, toxic metals are of particular concern, thus calling for advanced methods to remove metals from... 相似文献
42.
Naz Asma Zaman Khalid Yousaf Sheikh Usman Nassani Abdelmohsen A. Aldakhil Abdullah Mohammed Abro Muhammad Moinuddin Qazi 《Environmental science and pollution research international》2019,26(25):25676-25689
Environmental Science and Pollution Research - The objective of the study is to conduct the socio-economic and environmental survey about the feasibility of Saudi Arabia-China-Pakistan Economic... 相似文献
43.
V. Rybnikova M. Usman K. Hanna 《Environmental science and pollution research international》2016,23(17):17035-17048
Although the chemical reduction and advanced oxidation processes have been widely used individually, very few studies have assessed the combined reduction/oxidation approach for soil remediation. In the present study, experiments were performed in spiked sand and historically contaminated soil by using four synthetic nanoparticles (Fe0, Fe/Ni, Fe3O4, Fe3???x Ni x O4). These nanoparticles were tested firstly for reductive transformation of polychlorinated biphenyls (PCBs) and then employed as catalysts to promote chemical oxidation reactions (H2O2 or persulfate). Obtained results indicated that bimetallic nanoparticles Fe/Ni showed the highest efficiency in reduction of PCB28 and PCB118 in spiked sand (97 and 79 %, respectively), whereas magnetite (Fe3O4) exhibited a high catalytic stability during the combined reduction/oxidation approach. In chemical oxidation, persulfate showed higher PCB degradation extent than hydrogen peroxide. As expected, the degradation efficiency was found to be limited in historically contaminated soil, where only Fe0 and Fe/Ni particles exhibited reductive capability towards PCBs (13 and 18 %). In oxidation step, the highest degradation extents were obtained in presence of Fe0 and Fe/Ni (18–19 %). The increase in particle and oxidant doses improved the efficiency of treatment, but overall degradation extents did not exceed 30 %, suggesting that only a small part of PCBs in soil was available for reaction with catalyst and/or oxidant. The use of organic solvent or cyclodextrin to improve the PCB availability in soil did not enhance degradation efficiency, underscoring the strong impact of soil matrix. Moreover, a better PCB degradation was observed in sand spiked with extractable organic matter separated from contaminated soil. In contrast to fractions with higher particle size (250–500 and <500 μm), no PCB degradation was observed in the finest fraction (≤250 μm) having higher organic matter content. These findings may have important practical implications to promote successively reduction and oxidation reactions in soils and understand the impact of soil properties on remediation performance. 相似文献
44.
Khan Haroon ur Rashid Usman Bushra Zaman Khalid Nassani Abdelmohsen A. Haffar Mohamed Muneer Gulnaz 《Environmental science and pollution research international》2022,29(24):35884-35896
Environmental Science and Pollution Research - Climate finance and carbon pricing are regarded as sustainable policy mechanisms for mitigating negative environmental externalities via the... 相似文献
45.
Anser Muhammad Khalid Usman Muhammad Godil Danish Iqbal Shabbir Malik Shahzad Sharif Arshian Tabash Mosab I. Lopez Lydia Bares 《Environmental science and pollution research international》2021,28(37):51105-51118
Environmental Science and Pollution Research - This study analyzes the relationship between globalization, energy consumption, and economic growth among selected South Asian countries to promote... 相似文献
46.
Mehmood Usman Mansoor Amal Tariq Salman Ul-Haq Zia 《Environmental science and pollution research international》2021,28(21):26441-26448
Environmental Science and Pollution Research - This research analyzes the impacts of tourism and globalization on CO2 emissions in South Asian countries. The annual data was converted into... 相似文献
47.
Sohail Muhammad Tayyab Ullah Sana Majeed Muhammad Tariq Usman Ahmed 《Environmental science and pollution research international》2021,28(23):29046-29055
Environmental Science and Pollution Research - Modern advances in nonlinear modeling have exposed that nonlinear models yield more robust results compared with linear models. Research on the effect... 相似文献
48.
Sohail Muhammad Tayyab Ullah Sana Majeed Muhammad Tariq Usman Ahmed Andlib Zubaria 《Environmental science and pollution research international》2021,28(23):29265-29275
Environmental Science and Pollution Research - This study explores the symmetric and asymmetric effects of the shadow economy on clean energy and air pollution of South Asian countries over the... 相似文献
49.
Usman Muhammad Katsoyiannis Ioannis Rodrigues Josma Henna Ernst Mathias 《Environmental science and pollution research international》2021,28(42):59063-59075
Environmental Science and Pollution Research - Arsenic is among the major drinking water contaminants affecting populations in many countries because it causes serious health problems on long-term... 相似文献
50.
Azmat Muhammad Liaqat Umar Waqas Qamar Muhammad Uzair Awan Usman Khalid 《Regional Environmental Change》2017,17(3):813-825
Regional Environmental Change - This study examines the change in climate variables and snow cover dynamics and their impact on the hydrological regime of the Jhelum River basin in Western... 相似文献