Methane Project

We should be reaching the final phase of our project to build a cheap anaerobic digester today.

We have the actual digester producing a gas of some sort, which I guess is methane, as it is flammable. Today, we connect it up to a calor gas table-top stove and we will see what happens.

We have been approached by an organisation in Bungoma that is looking for uses for the infernal menace, water hyacinth, which they harvest from Lake Victoria at Kisumu. So far, they are producing "charcoal" briquettes, compost, fertiliser and now they want to see if it will produce methane.

From what I can find out, it will, but due to the high water and gas content of the plant, it has to be crushed, pressed and at least partially dried, otherwise it will just float at the top of the digester and not rot down.

A bit more complicated than using slurry, but there is plenty of water hyacinth, which is a menace to fishing in Lake Victoria, so if we can find uses for it, so much the better. It is just a pity that it is not edible!

Bio-gas and Aquatic Weeds

KCIS has a number of projects going at the moment, one of the big ones is the production of methane to be used as cooking fuel and a fuel for static petrol engines (generators, borehole pumps, etc.)

In the general scheme of things, methane collectors are fuelled with "organic matter", usually animal waste, of which there is an abundance in Kenya, with cattle and goats being everywhere.

But organic matter also includes plant life, and in particular, a certain aquatic weed that is causing major problems in Kenya, the water hyacinth.

I have not seen it first-hand, but I have read that the shallow waters in Lake Victoria are being choked by this plant, which isn't even native to Africa, let alone Kenya - it originates from South America.

My brain went into overtime when I read this. I was imagining a biogas processing plant somewhere on the shores of Lake Victoria processing tons of water hyacinth and producing methane to power a large power plant, with fertilser as a useful by product.

Not impossible, I admit. Water hyacinth lends itself to producing methane, but it would have to be dried out to some degree, then pulped or chopped up to assist rotting.

And KCIS? We are an organisation of three people with no regular funding. So what can we do to get things started? And of course, a project of this size would probably need government intervention, either at local or national level. And I cannot even imagine what sort of problems that would raise.

Since my first excitement, I have found that there are already organisations working on this, but cannot find out what stage they have reached.

So, I shall return to working on small household or community methane collectors, but I will maintain the dream of one day finding a way to minimise the hyacinth in Lake Victoria while at the same time producing virtually free fuel and fertiliser.

Typha is another water weed that causes problems in water ways. I have been told that it is edible. With the food crisis growing in East Africa, shouldn't someone be looking into this? Or are they? I can find no information, but if you know different, please let me know.