One of the questions I really struggled with in the IEMA exam last week was this one:

“Biofuels are the sustainable future for transport fuel.”

Define what a biofuel is; discuss the advantages/disadvantages of biofuels; and provide an opinion, supported with reasons, on whether you agree or not with the above statement.

The production and use of biofuels are an extremely complex sustainability issue. This question was accompanied with the instruction to candidates:

Each answer per whole question (not for each part of each question) must be between 250 and 400 words (including words within diagrams) – candidates who exceed the 400 word limit will fail that question

Yikes! In 400 words or less, solve the world’s energy security/food/climate change/habitat destruction/rural displacement/biodiversity problems!

Here is my response. It took me a whole day to write this so that I could be within the word limit. It’s times like these that I’m quite glad I’m not an expert in biofuels! People who know more (Yap, I mean you) might find this response necessarily simplistic

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Biofuels are made from biomass, most commonly plant material (DFT, 2005). There is worldwide focus on the potential for liquid biofuels to substitute petrol and diesel in meeting future transport needs (OECD/ITF, 2007).

Advantages	Disadvantages
Greenhouse gas (GHG) abatement – Biofuels produce less GHGs compared to fossil fuels; emissions are offset by the carbon that plants absorb while growing.	Emissions arise across all lifecycle stages – Fossil fuels are used to operate biofuels infrastructure, in cultivation, conversion, distribution and use. Compared to fossil fuels, grain-based biofuels reduce GHG emissions by as little as 10-30% (OECD/ITF 2007, Royal Society 2008)
Energy security – By displacing fossil fuels with biofuels (which are renewable), countries can reduce reliance on increasingly costly imported oil.	Limited land – The UK will be unlikely to achieve significant levels of fuel security by growing biofuels on its own land (Royal Society 2008).
Rural development – Biofuels industry can generate income for rural communities in both developed and developing countries.	Driving deforestation – Biofuels demand can drive deforestation, as farmers seek to generate income from as much arable land as they can control. Other impacts of intensified agriculture – Biofuels cultivation is likely to increase water use, soil erosion, fertiliser use, convert ecosystems to monocultures, and impact visual amenity of uncultivated land.
Waste as feedstock – Second generation biofuels can use waste feedstocks (e.g. vegetable waste and cooking oils). This can lead to GHG savings of around 70% (OECD/ITF 2007, NNFCC 2007).	Food shortages – First generation biofuels use conventional food crops (e.g. wheat, maize, sugar and palm oil) (Royal Society 2008). Demand for biofuels could divert both crops and land from food production.

Are biofuels the sustainable future for transport fuel? In the case of first generation biofuels, the answer is ‘no’. Their relatively low GHG abatement does not justify the high risk of driving food shortages. However, looking to the future, a sustainable transport system should incorporate biofuels that:

• Are based on dedicated high yield energy crops, co-products from food production, and organic wastes (Royal Society 2008);
• Wherever possible, make use of marginal land of low agricultural or biodiversity value;
• Are cultivated on sustainably managed cropland (integrated management of biodiversity, water, soil erosion, chemicals use, etc.);
• Run efficiently in vehicles designed to use biofuels; and
• Are priced to reflect environmental and social costs.

Advanced biofuels can then form part of a sustainable transport system, one that promotes biofuels alongside energy efficiency and reducing the demand and need for motorised transport.

Word count
397

Cited references
DFT – Department for Transport (2005), Renewable Transport Fuel Obligation (RTFO) feasibility report, available at link, accessed on 22 June 2008

NNFCC – National Non-Food Crops Centre (2007), ‘Liquid fuels’, website, available at link , accessed on 22 June 2008

OECD/ITF – Organisation for Economic Co-operation and Development and International Transport Forum (2007), ‘Biofuels: Linking Support to Performance’, Summary and conclusions from the Transport Research Centre, round table 7-8 June 2007, Paris, available at link, accessed on 22 June 2008

Royal Society (2008), Sustainable biofuels: prospects and challenges, policy document 01/08, The Royal Society, London, available at link, accessed on 22 June 2008

I am often asked what my job is. I don’t really enjoy answering this question because I feel like I’m selling something that I myself don’t understand clearly. I’m not even sure why I feel like I need to ‘sell’ my job as an being interesting or worthwhile. Yet, I do this anyway.

I will try to explain my job here and see if I can at least clear up in my own head what I ‘do for a living’.

My job title is ‘sustainability consultant’. Sustainability is a huge field, covering:

• international development and poverty alleviation
• renewable energy
• community and civil engagement
• corporate responsibility
• environmental management
• efficient manufacturing and other processes
• ‘green’ buildings
• environmental and welfare economics
• climate change and carbon management
• toxicology and land remediation
• safe product design
• public outreach

And so on.

Obviously, no one person can work in all areas of sustainability. My work particularly covers sustainability related to cities and urban systems — buildings, transport, energy supply, water supply, waste treatment, logistics, schooling… I also foray into job creation, habitat management, equity and access… Very peripherally, I also look at questions of public participation in decision making (e.g. voting), literacy, religious inclusion, and so on.

I generally work in developed countries, or at least the wealthier parts of developing countries (e.g. cities in China and the Middle East).

Most of my work is in large multidisciplinary projects. Typically, about 10 or 15 teams around the company (or from outside the company) are working together to design a new town or rebuild part of an existing city. My team’s job involves:

• Working with the client and the teams to come up with indicators for sustainability;
• Setting targets for the various indicators (e.g. There must be at least two jobs for every dwelling);
• Collecting data from teams about their designs;
• Integrating the data so that we can analyse the sustainability of the entire project (we often use models to do this quantitatively);
• Giving results back to teams, highlighting problems with their data and alerting teams to opportunities to work together for better strategies;
• Producing a report to give to the client

My role is often to manage the finances of the project, go to meetings with the project managers, present to the client, and coordinate the report. I don’t often do the modelling — there are others more capable of that than me.

That’s most of my job. Occasionally, I do projects that aren’t multidisciplinary. That’s when a client comes to our team directly and asks for strategic sustainability advice, like helping them develop a climate change policy.

I like my job. I like it because I get to look at the big picture. I like working in teams and meeting new people.

There are things I don’t like. Between teams, there are sometimes personality clashes and political issues about who does what work. Sometimes, I feel frustrated because I doubt our advice will actually be implemented in real life. At my most frustrated times, I wonder if I’m just a paper pusher, generating work for myself. What’s the point in producing a report that no one ever reads?

Now that I think about it, I guess that even if no one pays attention to a particular report I write, because I’ve learned from doing it, it will help me be more effective in the next project I do. That’s a happy thought, isn’t it!