E-Waste Management: From Production to Recycling Solutions

Introduction: The Scale of the E-Waste Problem

Everyone would agree that the growing role of high technologies — and the constant modernization and introduction of new ones — is the result of a dynamically changing society living in an age of technological progress. No one could have imagined in the 1950s that within five decades electronics and high-tech would become so essential and vital to society that they would serve as a guarantee of future progress.

Nor would anyone argue that the electronics industry, like every innovative industry, rapidly produces more complicated and powerful products, replacing obsolete equipment with new models and leaving old electronics without any practical use. This raises a direct question: what happens — or what should happen — to all those old computers, television and radio sets, batteries, and other electronic products after they are no longer useful? The answer is straightforward: they become unused trash. Before exploring the qualities of this "intelligent" trash, it is useful to consider recent statistics on the volume of electronic waste in the industrialized world.

As the National Office of Pollution Prevention (Canada) reported, 140,000 tonnes of e-waste had entered the Canadian market in 1999 alone. In the United States, it was estimated that more than 315 million computers became obsolete between 1997 and 2004 (SVTC, n.d.). In the European Union, between 6.5 and 7.5 million tonnes of e-waste were discarded per year (Young, Garman, & Tupper, 2000). In California alone, the consumer electronics waste stream was growing three times faster than the solid waste stream, and an estimated 500 million computers were projected to become obsolete in the U.S. by 2007 (National Recycling Coalition). More than 10,000 computers and television sets were being set aside each day in California garages alone (SVTC), and computers projected to become obsolete by 2005 contained approximately 1.2 billion pounds of lead (Californians Against Waste).

The largest share of recent environmental research highlights electronic waste as one of the fastest-growing components of the waste stream in urban and metropolitan areas worldwide, accounting for 3–5% of urban solid waste in industrialized nations. This problem is not limited to the concept of "solid waste," because electronic waste includes a wide range of hazardous materials, heavy metals, and toxic compounds that pollute water, air, and soil. Among the heavy metals with high toxicity used in the electronics industry are mercury, lead, cadmium, and barium.

The problem of electronic waste can be addressed through recycling, since e-waste represents a valuable source of precious and recoverable metals such as gold, silver, palladium, platinum, copper, and lead. However, it is also understood that the problem cannot be solved by partial recycling alone, as a large volume of residual waste remains after the recycling process with no practical value. For the problem to be resolved meaningfully, recycling practices must be coordinated with sound electronic industry management — including regulatory articles governing e-waste recycling — and serious environmental legislation must be established to govern the conditions of production and disposal of electronic products.

According to research by Sodhi and Reimer (2001), the typical material composition of electronic scrap is as follows: refractory oxides — 30.2%, plastics — 30.0%, copper — 20.1%, iron — 8.1%, tin — 4.0%, nickel — 2.0%, aluminium — 2.0%, zinc — 1.0%, silver — 0.2%, gold — 0.1%, palladium — 0.09% (from Models for Recycling Electronics End-of-Life Products, 2001).

The most toxic components of electronic waste are mercury and lead. Depending upon polluting concentration, lead can cause a range of serious disorders, from strokes to nervous system damage, while mercury causes serious brain disorders. E-waste lead accounts for 40% of the total amount of waste lead, and e-waste mercury accounts for 22% of the total amount of waste mercury (SVTC).

The problem of electronic waste had already become urgent in the previous decade and demanded intensive study of possible solutions. Results emerged relatively quickly. By the second half of the 1990s, groups of scientists around the world had developed reasonable approaches to e-waste management, and in some cases their calculations suggested that recycling could be a profitable industry.

However, the general problem cannot be solved if only a small number of industrial corporations or small companies specialize in e-waste recycling, because the majority of e-waste would remain unaddressed and these companies would lack the scale to recycle all e-waste properly. In this context, the optimal solution is the development of a state-regulated system of electronic waste management that includes appropriate and flexible legislation, clear distribution of roles between municipal environmental agencies and electronics producers, and protection of consumers — who should receive some form of refund for recycling obsolete electronics, given that unused obsolete electronics still pose a potential hazard to their keepers.

Looking for the Best Management Solution

According to the report Best Management Practices for E-Waste, the hierarchy of electronic waste management practices can be ordered according to environmental preference as follows: (1) reuse of electronic items and damaged components; (2) recycling of e-waste for material recovery; (3) management of e-waste for energy recovery; and (4) disposal via incineration or landfill (least preferable) (Best Management Practices for E-Waste, p. 28).

To develop a comprehensive management solution for the electronic waste problem, environmental authorities must first engage local governments, since this is a costly program that cannot be financed individually — particularly because outcomes are not always 100% profitable or even cost-neutral. Local governments in areas with a growing e-waste problem must therefore develop a set of legislative and official measures to regulate the issue.

Legislation must address the regulation of electronic waste disposal, the conditions of storage, and specific acts targeting the most hazardous e-waste — particularly CRT (cathode ray tube) screens from television sets and computer monitors, which contain the highest percentage of e-waste lead. These legislative regulations remain a challenge nationally: "only Florida and a few other states have banned CRT screens from landfills and incinerators" (SVTC). Only Minnesota has introduced subsidized take-back recycling programs, but the practice of one state is insufficient at the national scale. According to some environmental scientists, government subsidizing of the recycling industry may represent the most viable solution.

In comparison to local U.S. environmental programs such as those introduced in California and Florida, the countries of the European Union have advanced considerably further. As Hedemann-Robinson (2003) notes:

"The EU countries are by far the leaders in WEEE management. They have recently adopted a set of directives aimed at mitigating the environmental impact of e-waste. Their directives are based around the concept of Extended Producer Responsibility (EPR). This means that the producer of electrical or electronic equipment will be responsible for the whole life cycle of their product: from conception to disposal. Furthermore, all WEEE must be recycled or reused. Dangerous chemicals and heavy metals will be phased out by 2004, and new products must incorporate some recycled plastic. These directives are pioneering the industry and are likely to reduce and eventually eliminate the issues surrounding e-waste. The EU is taking leaps in the right direction." (European Environmental Law Review, p. 53–60)

The e-waste problem was first formally addressed in 1999, and by 2002 the European Union had adopted definitive regulations. As reported by World Environmental News:

"A new law to make companies meet the cost of recycling their own electronic goods — from refrigerators to hairdryers — has won approval from EU parliamentarians and governments. 'The consumer will be able to return equipment at the end of its life free of charge and send it for environmentally sound treatment, re-use and recycling,' said Margot Wallström, European Commissioner for the Environment. The law says a financial guarantee must be added to the price of items to ensure funds are available for recycling."

Beyond flexible legislation that distributes recycling responsibilities between manufacturers and municipal services, a definitive program is needed that focuses on the optimal and comprehensive utilization of electronic waste, the reduction of e-waste landfills, and the reduction of incineration. Recycling programs should not be limited to CRT monitors, as their owners are more likely to bring in a complete obsolete computer system rather than monitors alone.

The benefit of an integrated recycling program is that it enables the recovery of a variety of materials used in electronics manufacturing — including precious metals, semi-precious metals, and reusable electronic components. The most important aspect of effective e-waste management is identifying the most qualified partners for the practical execution of the program. Legislative frameworks may pave the way, but they cannot resolve the problem through ecological laws and bills alone. One additional benefit worth highlighting to potential partners and government investors is that e-waste recycling can create jobs for unemployed people and generate training programs in electronic repair and reuse, thereby also contributing to the reduction of unemployment.

Another important consideration is the collection of e-waste. Since most consumers still prefer to store obsolete electronics in garages and storage rooms, e-waste management officials must challenge this tendency by offering incentives to owners of old electronics. This also applies to high schools and educational institutions, which represent a significant share of electronics users. E-waste management officials must also develop transportation programs that allow residents to dispose of electronics without incurring transportation or disposal costs.

While the organization of such a system is expensive, the results would justify the investment. A proper accounting of damages from lead and mercury pollution — including costs of contaminated water cleanup and medical expenses for those affected — would tip the balance decisively in favor of e-waste management. Moreover, such a system would create a more rational distribution of environmental protection and clean-up responsibilities in urban areas, making waste disposal more optimal, cost-effective, and convenient for both authorities and residents.

E-waste management has the potential to become a profitable business when organized and operated on a consistent basis. It may in fact be among the most profitable segments of the solid waste utilization industry, provided that sorting of electronic waste is conducted at a professional level. If the materials recovered from e-waste have a value sufficient to cover transportation, recycling, and management costs, the process becomes commercially viable and helps conserve raw materials. It is generally understood that materials recovered through recycling cost less than those obtained through conventional industrial extraction.

Business electronic waste, in particular, often has greater reuse potential than waste from residential users, since modernization cycles in the business sector are rapid and many discarded items remain functional. E-waste management frameworks suggest that businesses could donate obsolete or unused electronics to non-profit or charitable organizations for further distribution and reuse. To encourage such practices, environmental officials suggest offering tax deductions to donors and taking on the function of transporting donated electronics to end users or to the relevant non-profit organizations. The main requirement is a system of expert assessment to determine the reuse potential and expected working life of donated items.

Conclusion

The growing process of modernization and informatization, while making life more convenient and comfortable, creates the problem of obsolete electronic products — including challenges around storage, recycling, and, most critically, the pollution of water and soil by electronic waste. Though not yet fully visible in its consequences, this problem is likely to become one of the most urgent environmental issues in the near future, and solutions must be developed now.