TRENDS & UPDATES
13recyclinginternational.com | May/June | 2019
A ‘goldeN Age’ of secoNd-hANd shoppiNg
In a world hallmarked by consum-
ers constantly craving new gad-
gets, the fashion industry seems to
be going in a different direction.
The second-hand clothing market
in the United States has grown 21
times faster than retail sales of new
clothing over the past three years.
Have you ever wondered how much the second-hand clothing
industry is worth? In America, it is in excess of US$ 24 billion (EUR
21 billion) and the market is expected to reach US$ 51 billion by
2023, according to data compiled by ThredUP, the world’s largest
online thrift store. This has been called the ‘golden age’ of second-
hand shopping.
‘There are more second-hand shoppers than ever,’ the company
reports. More than 65 million pieces of used clothing have been
‘upcycled’ via its online marketplace since 2014. Some 21 million
units were sold last year. This is a huge leap from the four million
pieces sold in TredUp’s first year.
Moreover, the second-hand fashion market is projected to grow to
become nearly 50% bigger than the ‘fast fashion’ market by 2028.
TredUp points out that ‘the equivalent of one garbage truck of tex-
tiles is landfilled or incinerated every second.’ It cites market data
saying that 26% of ‘luxury shoppers’ purchase used clothes these
days rather than new designs by Gucci, Chanel, Prada and the rest.
Consultancy firm McKinsey says: ‘While established brands have tra-
ditionally turned a blind or scorning eye towards second-hand retail,
they are now wading into the pre-owned and rental markets. In the
years ahead, we expect the number of brands getting into the rental,
resale, and refurbishment businesses to increase markedly.’
Next phAse for coBAlt recovery from
BAtteries
Scientists at a uS uni-
versity are experiment-
ing with solvents to find
a more sustainable way
of recovering valuable
metals from discarded
batteries. ‘Deep eutec-
tic solvents’ can be used
to extract metals such
as cobalt from the metal
oxides commonly used
as cathodes in lithium-
ion batteries, reports
professor Pulickel Ajayan of Rice University’s engineering and of
chemistry department in Houston, Texas.
The solvent is made from choline chloride, a water-soluble salt used
mainly in animal feed, and ethylene glycol, typically found in anti-
freeze. It recovers more than 90% of cobalt from powdered com-
pounds and a smaller, ‘but still significant’, amount from used bat-
teries.
A deep eutectic solvent is a mixture of two or more compounds
that freezes at temperatures much lower than either of its elements.
Graduate student Kimmai Tran says: ‘As a result, you can literally
obtain a liquid from a simple combination of solids. The nice thing
about this solvent is that it can dissolve a wide variety of metal
oxides.’
During tests with lithium cobalt oxide powder, the clear solvent
yielded a wide spectrum of blue-green colours that indicated the
presence of cobalt dissolved within it. The brighter the colour, the
more cobalt has been captured, according to Tran.
The brighter the colour, the more cobalt has been
captured.
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