Biosolar cells: moving forward step by step
Through biosolar cells, researchers try to improve photosynthesis, the process through which plants, algae and some bacteria capture sunlight. The product of such ‘artificial leaves’ is hydrogen for instance, that can be processed to fuels and chemicals, with CO2 and nitrogen. There are many research programs in the area of direct conversion of sunlight, and
Microalgae, environmental cleaners and food additives producers
The use of microalgae for water purification is not widespread. Yet, they are very well capable of doing so, says Paul Hamm. Twenty-five years ago, he was involved as an investor in water purification by microalgae. But he was too early. Government policy steered into another direction, and Hamm’s innovation lost its value in the
Efficient protein production and utilization
The world runs into planetary boundaries, or has transgressed them already. The three main problems can all be alleviated by a more efficient agriculture. Being: emission of greenhouse gases, excess of nitrogen fertilization, and biodiversity loss. But we will only succeed in doing so, says Johan Sanders, if we treat these jointly: above all, we
Circular agriculture, the model of the future
In September 2018, the Dutch minister for agriculture Carola Schouten announced that circular agriculture will become her main policy goal. Circular agriculture, also known as low external input farming, is the model of the future. The minister intends to remove obstacles to it, and to stimulate this model all across the country. An old principle
Biohydrogen: the next green alternative fuel
Hydrogen has a high energy content (120-142.9 MJ/kg); it is a clean energy carrier and can replace fossil fuels. Hydrogen is already a fuel of choice for space programs; it guarantees environmental quality and mitigates climate change. However, the presently used commercial methods for its production are not environmentally friendly; they require a major energy
Biocomposites for cars
Every year the European car industry uses around 80,000 tonnes of wood and plant fibres to reinforce composites, instead of synthetic fibres like glass and carbon fibre. Biocomposites have become increasingly popular with car manufacturers because they can reduce vehicle weight, which improves performance and lowers CO2 emissions. They are used in car interiors for
Can we engineer life? 4.3 Plant gene technology, history
Ever since mankind developed agriculture, we try to selectively breed plants in order to secure enough and good food. Our capabilities to purposely engineer plant genomes have increased a lot over the past few decades. There are many applications of plant gene technology now, and opportunities abound. And we won’t grow food crops with an
Bioenergy: fine, if from side streams
Why cannot we lift all barriers for the use of bioenergy? Because the energy sector is much larger than the food sector. The 20 billion tons of fossil fuels that mankind uses each year, is equivalent to 40 billion tons of biomass; whereas our yearly harvest for food is 9 billion tons, of which 3
