Show some energy

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It has been known for a long time that there is energy in wastewater. Nearly any wastewater has an energy value of 13-15 kJ/g COD. The organic matter present in wastewater is theoretically sufficient to more than offset all the energy used in its treatment. Continue reading

A Raw Deal for Vegetarians

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It is the same story at every conference I attend. At lunchtime, I move towards the food-laden tables hoping to find something that I can eat, but end up being thoroughly disappointed. The only items on offer for vegetarians are salads; all very good to look at, but not at all filling. On the other hand, meat-eaters have a variety of dishes to choose from. Why are vegetarians given a raw deal? Continue reading