Chemicals and waste

The management of chemicals and waste is a crucial aspect of achieving the Sustainable Development Goals (SDGs), a collection of 17 interlinked global goals designed to be a "blueprint to achieve a better and more sustainable future for all" by 2030. These goals were set up in 2015 by the United Nations General Assembly and are intended to be achieved by the year 2030. They address global challenges, including those related to poverty, inequality, climate change, environmental degradation, peace, and justice.

SDG 12, which focuses on Responsible Consumption and Production, is directly related to the management of chemicals and waste. This goal aims to ensure sustainable consumption and production patterns, which includes the environmentally sound management of chemicals and waste. The mismanagement of these elements can have severe environmental and health impacts, thus undermining the objectives of SDG 12.

One of the critical links between chemical and waste management and the SDGs is to human health, as outlined in SDG 3, which aims to ensure healthy lives and promote well-being for all at all ages. Improper handling and disposal of chemicals and waste can lead to pollution and contamination, which can have direct adverse effects on human health. This includes increased risks of diseases, long-term health conditions, and impacts on the well-being of communities, especially those living in close proximity to waste disposal sites or industrial areas.

The impact of waste management also extends to climate change, addressed in SDG 13. Excessive waste generation, particularly organic waste in landfills, contributes to the production of greenhouse gases like methane, a potent contributor to global warming. Additionally, the production and disposal of plastics, electronic waste, and other non-biodegradable materials contribute significantly to carbon emissions. Effective management and reduction of waste are essential to mitigate climate change impacts.

The preservation of life below water (SDG 14) and life on land (SDG 15) is also heavily influenced by how chemicals and waste are managed. Pollution from chemicals and waste can severely impact aquatic ecosystems, harming marine life and biodiversity. Similarly, terrestrial ecosystems and wildlife are at risk from land pollution and habitat destruction caused by improper waste disposal and chemical spills.

Furthermore, SDG 8, which focuses on promoting sustained, inclusive, and sustainable economic growth, full and productive employment, and decent work for all, is impacted by the management of chemicals and waste. Workers in industries dealing with chemicals and waste are often exposed to hazardous conditions. Ensuring their safety and health is a key aspect of achieving this goal. Moreover, sustainable waste management can create new job opportunities and contribute to economic growth through recycling and waste-to-energy sectors.

The effective and environmentally sound management of chemicals and waste is not only essential for achieving SDG 12 but also intersects with several other SDGs. It is a fundamental component of sustainable development, impacting human health, climate change, biodiversity, and economic growth. Addressing these challenges requires a holistic approach, encompassing strict regulatory frameworks, technological innovation, public awareness, and international cooperation to ensure a sustainable future.

Elsevier,

Sustainable Materials and Technologies, Volume 23, April 2020

Lithium-ion batteries (LIBs) have an established role in the consumer electronics markets with minimum risk of replacement from any other contender in the near future. The recent momentum towards electric vehicles and the renewable energy storage market is creating an increased demand for LIBs. The large amount of hazardous waste generated from the disposal of LIBs is driving research into a sustainable approach for LIB treatment and recovery. The positive electrode active materials being the main targeted component as it is the greatest cost contributor to LIBs production.

This book chapter addresses goals 7, 13 and 11 by looking at ecological technologies that transform natural resources into anthropocentric goods and services.

Increased demand for food to feed the ever-growing population led to development and adoption of synthetic chemicals as a quick and effective strategy of managing crop pests and diseases. However, overreliance on synthetic pesticides is discouraged due to their detrimental effects on human health, the environment, and development of resistant pest and pathogen strains. This, coupled with increasing demand for organically produced foods, stimulated search for alternative approaches and botanical pesticides are particularly gaining importance.

Elsevier,

Plastic Waste and Recycling, Environmental Impact, Societal Issues, Prevention, and Solutions, 2020, pages 223 - 249

This book chapter addresses goals 14, 15, and 12 by exploring the origins of microplastics (relating to our society, production and consumption) and the diverse and harmful impacts of microplastics in the marine environment on life underwater, as well as interactions with humans and other life on land at the end of the cycle.
Chioma Blaise Chikere, 2017 second prize winner of the Green Sustainable Chemistry Challenge
In 2017, Chioma Blaise Chikere was awarded the second prize of the Green and Sustainable Chemistry Challenge. Her project “Eco-restoration of crude oil-polluted land in Nigeria” demonstrated how organic nutrients such as garden fertilizers and animal excreta can be used to degrade hydrocarbons, cleaning up the soils heavily contaminated by decades of oil spills and advancing SDGs 6, 13 and 15. Three years later, we caught up with Dr. Chikere to learn about her research journey.
Elsevier,

An Introduction to Interdisciplinary Toxicology, From Molecules to Man, 2020, Pages 341-352

This chapter examines the contaminated community phenomenon by situating it within social science scholarship on hazards and disasters. The goal of SDG target 3.9 is to substantially reduce the number of deaths and illnesses from hazardous chemicals and air, water and soil pollution and contamination.
Elsevier,

Encyclopedia of Renewable and Sustainable Materials: Nanomaterial for CO2 Sequestration, Volume 3, 2020

This book chapter advances SDGs 7, 13, and 12 by describing promising nanomaterials for the capture of CO2 emissions. Since it will take time for the world to rely solely on renewables, nanomaterials for carbon capture can help protect the atmosphere from harmful greenhouse gases in the interim.
A cationic chelating polymer, namely biopolymer chitosan CHI with a molecular weight of 117 kDa is employed in the present study to bring about the retention of azoic dyes from its aqueous solutions by way of polymer enhanced ultrafiltration (PEUF). The effects of process parameters, namely, operating time, CHI and sodium chloride concentrations, transmembrane pressure, and pH of solution on the retention rate and permeate flux were examined.
The cost-effectiveness and reliability of waste collection services in informal settlements can be difficult to optimize given the geospatial and temporal variability of latrine use. Daily servicing to avoid overflow events is inefficient, but dynamic scheduling of latrine servicing could reduce costs by providing just-in-time servicing for latrines. This study used cellular-connected motion sensors and machine learning to dynamically predict when daily latrine servicing could be skipped with a low risk of overflow.
The recovery of resources from waste streams including food production plants can improve the overall sustainability of such processes from both economic and environmental points of view. This is because resource recovery solutions will be instrumental in overcoming the grand societal challenges in relation to the Water-Energy-Food (WEF) nexus in one of many aspects.

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