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771.
Sodium citrate and biochar synergistic improvement of nanoscale zero-valent iron composite for the removal of chromium (Ⅵ) in aqueous solutions 下载免费PDF全文
Hongyi Zhou Mengyao Ye Yongkang Zhao Shams Ali Baig Ning Huang Mengyan Ma 《环境科学学报(英文版)》2022,34(5):227-239
Sodium citrate (SC) is a widely-used food and industrial additive with the properties of complexation and microbial degradation. In the present study, nano-zero-valent iron reaction system ([email protected]) was successfully established by modifying nanoscale zero-valent iron (nZVI) with SC and biochar (BC), and was employed to remove Cr(Ⅵ) from aqueous solutions. The nZVI, SC-nZVI and [email protected] were characterized and compared using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), thermogravimetric analyses (TGA), vibrating sample magnetometer (VSM), scanning electron microscope (SEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The results showed that nZVI was successfully loaded on the biochar, and both the agglomeration and surface passivation problems of nanoparticles were well resolved. The dosage of SC, C:Fe, initial pH and Cr(Ⅵ) concentration demonstrated direct effects on the removal efficiency. The maximum Cr(Ⅵ) removal rate and the removal capacity within 60 min were 99.7% and 199.46 mg/g, respectively (C:Fe was 1:1, SC dosage was 1.12 mol.%, temperature was 25°C, pH = 7, and the original concentration of Cr(Ⅵ) was 20 mg/L). The reaction confirmed to follow the pseudo-second-order reaction kinetics, and the order of the reaction rate constant k was as follows: [email protected] > [email protected] > SC-nZVI > nZVI. In addition, the mechanism of Cr(Ⅵ) removal by [email protected] mainly involved adsorption, reduction and co-precipitation, and the reduction of Cr(Ⅵ) to Cr(Ⅲ) by nano Fe0 played a vital role. Findings from the present study demonstrated that the [email protected] exhibited excellent removal efficiency toward Cr(Ⅵ) with an improved synergistic characteristic by SC and BC. 相似文献
772.
Ahmed Zahoor Adebayo Tomiwa Sunday Udemba Edmund Ntom Murshed Muntasir Kirikkaleli Dervis 《Environmental science and pollution research international》2022,29(17):24925-24940
Environmental Science and Pollution Research - The economic structure of countries can influence economic growth, energy demand, and environmental footprints. However, the literature on economic... 相似文献
773.
Occupational ocular health problems among marble workers at Shaq El Tho’ban industrial area in Egypt
Khorshed Enjy A. E. El-Naggar Safaa A. El-Gohary Samia S. Awad Ahmed M. B. Ahmed Amani S. 《Environmental science and pollution research international》2022,29(25):37445-37457
Environmental Science and Pollution Research - Eye health of the working population is an essential condition for productivity. Marble industry is processed at large scale at Shaq El Tho’ban... 相似文献
774.
Osman Ahmed I. Mehta Neha Elgarahy Ahmed M. Hefny Mahmoud Al-Hinai Amer Al-Muhtaseb Alaa H. Rooney David W. 《Environmental Chemistry Letters》2022,20(1):153-188
Environmental Chemistry Letters - Dihydrogen (H2), commonly named ‘hydrogen’, is increasingly recognised as a clean and reliable energy vector for decarbonisation and defossilisation by... 相似文献
775.
Islam Shafiqul Rahman Arifur Nahar Kamrun Chowdhury Saljar Rahman Ahmed Istiaq Mohiuddin K. M. 《Environmental science and pollution research international》2022,29(44):66490-66506
Environmental Science and Pollution Research - Kumarkhali upazila in Kushtia district of western Bangladesh has become especially vulnerable to dye-effluent pollution over the last two decades.... 相似文献
776.
Elbaz Ahmed M. Ahmed Ayman M. H. Abdel-Maqsoud Ahmed Badran Aml M. M. Abdel-Moneim Abdel-Moneim Eid 《Environmental science and pollution research international》2022,29(30):45578-45588
Environmental Science and Pollution Research - Global warming has become intensified and widespread, threatening the world with causing acute heatwaves that adversely affect poultry production and... 相似文献
777.
Asghar Muhammad Mansoor Zaidi Syed Anees Haider Ahmed Zahoor Khalid Samia Murshed Muntasir Mahmood Haider Abbas Shujaat 《Environmental science and pollution research international》2022,29(39):58773-58790
Environmental Science and Pollution Research - Many researchers and intellectuals focused on the topic of organizational citizenship behavior for the environment (OCBE); however, employees’... 相似文献
778.
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
779.
Chen Lin Msigwa Goodluck Yang Mingyu Osman Ahmed I. Fawzy Samer Rooney David W. Yap Pow-Seng 《Environmental Chemistry Letters》2022,20(4):2277-2310
Environmental Chemistry Letters - The increasing global industrialization and over-exploitation of fossil fuels has induced the release of greenhouse gases, leading to an increase in global... 相似文献
780.
Sohu Samiullah Bheel Naraindas Jhatial Ashfaque Ahmed Ansari Abdul Aziz Shar Irfan Ali 《Environmental science and pollution research international》2022,29(39):58685-58697
Environmental Science and Pollution Research - Cement production emits a significant carbon dioxide (CO2) gas, dramatically influencing the environment. Furthermore, a large amount of energy is... 相似文献