Problem Statement:

Human activities harm the environment by polluting the water we drink, the air we breathe, and the soil in which plants thrive. Although the industrial revolution was a major accomplishment in terms of technology, society, and the supply of numerous services, it also resulted in the production of massive amounts of pollutants discharged into the atmosphere that are damaging to human health. Without a doubt, global environmental degradation is seen as a multifaceted international public health issue. This big issue is linked to social, economic, and legislative concerns, as well as lifestyle behaviors. Clearly, urbanization and industrialization are reaching unprecedented and alarming levels in our day. Anthropogenic air and water pollution is one of the world's most serious public health threats. Air pollution, particularly indoor air pollution, has the potential to have a wide range of negative consequences on human health.

Air pollution has recently formed in developing countries as a result of industrial activity, and the number of emission sources, such as improper automobiles, has increased. About 4.3 million people die as a result of household air pollution and 3.7 million as a result of ambient air pollution, with the majority (3.3 and 2.6 million, respectively) living in Asia. According to a recent World Health Organization report, ambient air pollution caused around 3 million fatalities worldwide in 2012, with China and India facing the most severe challenges. People's thoughts and experiences of their life are directly influenced by air pollution through visual perceptions. This significantly reduces human health. Empirical scholars have attempted to investigate how self-reported well-being varies with air quality, often using a survey method and correlating human health results with monitored air pollution data. According to their findings, NO₂, particles, lead, SO₂, and O₃ all have a significant deleterious impact on human health. Water is a natural resource that is required by all living things. Clean water is also used in industrial, as well as in social and economic growth. However, the United Nations (UN) estimates that 2.2 billion people do not have access to safe drinking water. According to the World Health Organizations (WHO), around 2 billion people worldwide consume water contaminated with faeces. Bacteria that cause diarrhea, cholera, dysentery, typhoid, hepatitis A, and polio can live in contaminated water. According to the UN, around 297,000 children under the age of five die each year as a result of diseases caused by poor sanitation, poor hygiene, or contaminated drinking water.

Nitrogen oxides (NOx), a type of atmospheric pollution, have been linked to a variety of health issues, including lung function impairment and respiratory disorders. 14 Approximately 95% of the NOx emitted is in the form of nitric oxide (NO). NO and its compounds have neurotoxic effects on particular tissues and organs in the body. Furthermore, inhaled NO can quickly react with oxygen in the lung to generate NO₂, a powerful pulmonary irritant. As a result, eliminating low concentrations of NO in indoor air is not only necessary, but also urgently required. Water purification can ensure that the water are safe, sustainable, and free of disagreeable taste and odor. Water purification is the process of removing unwanted chemical compounds, organic and inorganic elements, and biological pollutants from water. One of the primary goals of water purification is to provide safe drinking water. Water purification also serves the requirements for clean and potable water in medical, pharmaceutical, chemical, and industrial applications. Contaminants such as suspended particles, parasites, bacteria, algae, viruses, and fungi are reduced in concentration during the purifying process.

The objectives of this paper are to investigate at the preparation of catalytic materials for water purification as well as NO removal approaches. Preparation of highly active photo-Fenton catalytic materials based on iron oxide nanoparticles supported on activated carbon for the destruction of organic pollutants in industrial water for water purification. Using K/Cu-Mn-O as a catalyst, the feasibility of removing NO in indoor air to generate nitrites or nitrates was explored. The Cu-Mn-O catalyst was produced in aqueous solution by co-precipitation with a pH regulator and then modified by sequential impregnation with potassium-precursor promoters. The NO conversion was carried out in order to optimise the conditions for catalyst synthesis. The results demonstrated that the K/Cu-Mn-O catalyst could successfully remove NO in oxygen-rich conditions at a low temperature.

Question : After reading the above and the problem statement write about following:

1. Contribution in environmental protection

2. Three applications of the proposed study/catalysis technique

Instructions for tutor:

DOI: 10.1177/1420326X17728153

DOI 10.1007/s10751-013-0976-5

you can use these DOI to search for above two articles if you need more information