Business Green: The first wave of trading in EU carbon allowances (EUAs) for the next phase of the scheme starting in 2013 is expected to take off within the next few months, in a sign that many participants in the market remain confident in its long term prospects. The EU emissions trading scheme (ETS) has been heavily criticised in recent months after falling industrial output led to reduced demand for carbon allowances. Consequently, the price of carbon allowances has collapsed from a high of …