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Environmental Reclamation in Nigeria
Published in Akinola Rasheed Popoola, Emeka Godfrey Nwoba, James Chukwuma Ogbonna, Charles Oluwaseun Adetunji, Nwadiuto (Diuto) Esiobu, Abdulrazak B. Ibrahim, Benjamin Ewa Ubi, Bioenergy and Environmental Biotechnology for Sustainable Development, 2022
Beckley Ikhajiagbe, Geoffrey O. Anoliefo, Isaac J. Adekunle, Ogochukwu F. Olise, Saheed Ibrahim Musa
Several environmental regulatory agencies, such as the Environmental Protection Agency, define requirements that specify when environmental remediation is required, while different areas may be affected by additional legislation. Oil spills, for example, also necessitate immediate remediation because they pose an immediate danger to the environment and human life. In Nigeria, the Federal Government Protection Agency (FEPA) Decree 58, which established principles for dealing with the environment, was passed in 1988. There had already been many laws and protests of government concern for environmental protection, including the Mineral Act of 1969, 1973, and 1984, the Oil in Navigable Water Decree of 1968, the Associated Gas Injection Act of 1969, and the Chad Basin Development Act of 1973. These laws and acts were enacted to address specific and visible environmental issues. They had a limited reach and were spatially constrained.
Introduction
Published in Timothy J. Havranek, Modern Project Management Techniques for the Environmental Remediation Industry, 2017
The term environmental remediation refers to the performance of engineering/construction projects designed to remedy or restore environmental media, particularly soil and groundwater, degraded by chemical compounds (or elements) that may pose a threat to human health and the environment. Most companies that manufacture a product or provide a service handle chemicals or produce waste materials which, under certain conditions, may pose a threat to human health and the environment. The various ways by which hazardous chemical products or waste materials have entered the environment include: Accidental releases or spills during loading, transportation, and unloading operationsImproper handling, storage, and disposal at times when the potential hazards associated with various materials were not well understoodLeaks from aging or deteriorated equipment such as underground storage tanks and their associated pipingIntentional release due to unsophisticated or unethical business practices
Environmental and Biological Applications of Nanoparticles
Published in Sunipa Roy, Chandan Kumar Ghosh, Chandan Kumar Sarkar, Nanotechnology, 2017
Kaushik Roy, Chandan Kumar Ghosh, Chandan Kumar Sarkar
Polluting elements or compounds that have a negative impact on environment and human health may be termed pollutants or contaminants. Environmental remediation is the process of removing these materials from different environmental media like water, air, or soil. There are several man-made pollutants present in the environment that resist degradation through natural procedures and disrupt hormonal and other physiological systems in living creatures. Removal of these toxic materials with existing detection and treatment methods is generally found to be time-consuming and expensive. In the last few years, researchers around the world have been focusing on the use of nanomaterials for environmental monitoring and remediation. Recently, some reports have instilled hope as nanomaterials were found to clean up toxic elements and harmful organisms from soil, air, and water bodies. The use of nanomaterials for the remediation of environmental hazards may be termed “nanoremediation.”
Catalytic applications of phosphorene: Computational design and experimental performance assessment
Published in Critical Reviews in Environmental Science and Technology, 2023
Monika Nehra, Neeraj Dilbaghi, Rajesh Kumar, Sunita Srivastava, K. Tankeshwar, Ki-Hyun Kim, Sandeep Kumar
Nowadays, limited and fast-depleting resources of crude oil has put scientific community on alert to look out for the greener processes in order to supplement the chemicals, polymers, energy, and fuels. In this case, green chemistry can do wonders in various ways like efficient use of renewable resources and reducing the waste from environment via catalysis. In the chemical industry, catalysis is an effective option to improve the selectivity and efficiency of chemical reactions. Unlike non-catalytic reactions, catalysis can proceed via more energy-efficient routes with the least production of undesirable by-products. Catalysts have significant impacts on a wide range of research activities including (i) the synthesis of new pharmaceuticals to transform the practices of drug discovery and development (Hayler et al., 2019), (ii) the generation, conversion, and storage of energy (such as new fuel production, oil refining, fuel and solar cells, and batteries) (Pu et al., 2020), and (iii) environmental remediation (e.g. sensing and removal of pollutants from water, air, and soil) (Iglesias et al., 2020). The utility of diverse natural or synthetic materials (e.g. enzymes, metal and metal oxides, and organic compounds) has been explored to help expand the fields of catalytic applications.
A review of chromite mining in Sukinda Valley of India: impact and potential remediation measures
Published in International Journal of Phytoremediation, 2020
Suman Nayak, Rangabhashiyam S, Balasubramanian P, Paresh Kale
Nanotechnology is a trending technology that had found its application in various fields including medical science, fabrics engineering, defense, space technology and many more. Nanotechnology is also explored as possible remediation techniques with prominence in absorbance and reduction of Cr(VI) from industrial effluents when used as nano-adsorbents, nano-catalysts and nano-membranes (Lv et al. 2012; Mitra et al. 2017). Nanomaterials are an ideal candidate for environmental remediation following the characteristics features, i.e., small size, better solubility, large surface area, charges on surface area and varied surface composition (Lv et al. 2012; Kim and Roh 2019). Maitlo et al. (2019) reviewed the various nanomaterials for the sorptive removal of chromium from water.
Synthesis of ultra-small gold nanoparticles by polyphenol extracted from Salvia officinalis and efficiency for catalytic reduction of p-nitrophenol and methylene blue
Published in Green Chemistry Letters and Reviews, 2020
Mohamed Habib Oueslati, Lotfi Ben Tahar, Abdel Halim Harrath
Growing research efforts are focused on the application of nanotechnology in the field of environmental remediation. Chemical industry is the major source of environmental pollution. The huge organic dyes and nitroaromatic compounds, released in incontrollable way, are among the most hazardous pollutants for our aquatic system (1–3). Nitroaromatic compounds are fundamental chemicals for the manufacture of various products in various applications fields. They are for instance used in the production of pesticides, dyes, pharmaceuticals and explosives (4, 5). Nitrophenol has been identified by the US Environmental Protection Agency (EPA) as one of the priority pollutants due to its danger and toxicity (6). The conventional treatment approaches for the degradation of nitroaromatic compounds from wastewaters are environmentally harmful like microbial degradation, adsorption, photocatalytic degradation and electrochemical treatment degradation (7–12). The nanoparticles of Au, Ag, Pt and Re have attracted much attention as catalysts for the rapid reduction of nitroarenes and dyes in aqueous medium (13, 14). Nevertheless, at the nanoscale the metals are very unstable because of their high surface energy and rapid agglomeration which decreases their catalytic activity (15, 16). Therefore, it is necessary to use a capping agent to prevent the aggregation of the nanoparticles and then stabilize them in the form of colloidal suspension. To overcome the inherent drawbacks, several eco-friendly stabilizing agents, naturally available and with low-cost processing were used. Several plant parts such as leaves, flowers, fruits, and seeds have been successfully used for biosynthesizing AuNPs, Moreover plant extracts, in particular, those derived from plants rich in polyphenols, are good sources of reducing and stabilizing agents (17–21). In this study, we chose the plant Salvia officinalis for the synthesis of gold nanoparticles. Indoor work shows that this plant has been widely used in pharmacognosy (22–25). Today German Commission E has accepted the use of S. officinalis for a number of medical applications included inflammation and dyspepsia (24). Previous studies have suggested that plant is sources of polyphenol and flavonoids compounds (23–25). The presence polyphenol in ethanolic extract such as salvianolic acid, rosemarinic acid and luteiolin gluciside (26, 27), acts as reducing and stabilizers agents for gold salts to produce AuNPs nanoparticles. This work describes a green chemistry method for the synthesis of AuNPs using polyphenol obtained from the Salvia officinalis plant without any chemical additive. Two kinds of AuNPs with controlled size were successfully produced in acidic and alkaline aqueous media. The structure, microstructure, optical and surface functionality of the produced AuNPs were studied using UV-visible, and infrared (IR) spectroscopies and transmission electron microscopy (TEM). Finally, the catalytic efficiency of the biosynthesized AuNPs was evaluated by monitoring the degradation of p-NP and MB.