Jura Rafal

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since Sep 21, 2015
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Planet Earth, Europe, Upper Silesia
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Recent posts by Jura Rafal

Ian Bishop wrote:Then, to recycle the contents of the buckets, we plan to leave them in the hot equatorial sun to dry out for a couple of months. Then, we have built 1.5m3 composting boxes. We will layer up with plenty of browns and greens and bacterial activators, leaving a 'nest' in the middle for a few buckets of the dried toilet material. We'll then Close it all up, ensure that thermophillic composting is taking place and that the inside of the pile is nice and hot for a while, then start turning.

With the above way you are NOT going to create amiable conditions for composting.

DO NOT: Dry the deposit  .
             close bucket.
             add activators
             turn the pile

DO: add the bucket deposit to  a compost bin  with a plenty of ventilating (air providing) chinks and wrap the construction with a chicken wire to keep animals away.
      read the Joe Jenkins book (available online for free)
4 months ago
Well..  We shall be exact in the topic.
As mixing substrates of our metabolism creates feces.
We produce much more liquid fraction if compared by volume.

If  solid fraction is directly dissolved in liquid one we obtain feces which will give odours in no time due to anaerobic bacteria action (and we lose precoius elements).
So our task is to prohibit anaerobic condition from ocurring.

Most of the working toilets systems I'm familiar with, their owners call "composting", are mere bucket toilets from which the substrate needs to be transported into the composting pile.

If such toilet is used only for "double action" and proper amount of sawdust is applied (If substrate in a bucket is covered adequately,)+ the bucket is emptied within a week (in a moderate climate)  then there is no need of urine separation as its volume is easily absorbed by the cover material  thus preventing anaerobic conditions from ocurring. (and it provides necessary moisture for the composting process in the pile.)

I have such system and I ensure you one may have a lunch in the toilet room.

Then It is enough to turn the bucket upside  down and the substrate slides off  leaving the bucket pretty clean.
7 months ago

Peter van den Berg wrote:Testing has been done with a Testo 330/2 gas analiser and a computer to log the numbers every ten seconds. Temperature, oxygen and carbonmonoxide are measured directly and can be compared with other gas analisers. All the rest is calculated  using those three, so is the efficiency. As Jura Rafal mentions, the formula to calculate that are slightly different from country to country depending on what the rules say for that specific country. So difference between mine and say, Matt Walker's analizer's efficiency is about 8%. Regrettably, making efficiency numbers a very unreliable number to go for.

Dear Peter
My hat tip for your preciseness!
I meant the efficiency but I did not write it!
11 months ago

Sidney Beauchamp wrote:Hi Peter,
I'd like to learn more about the instruments used and guidelines to run those tests so I can see the performance and share my findings.

Hi Sidney...
the test has been done with TESTO apparatus (let us Peter say what model precisely), but the results are hardly comparable unless the stoves are tested with the same apparatus as it has different scripts implemented which use different  formulas for calculations.
11 months ago

Esbjorn Aneer wrote:I am following the DSR development on Donkey's forum and am very keen on hearing how you are finding this itteration.
Many thanks for any answers, Esbjorn

I wanted to post exactly the same words!

Some follow up would warm my heart...

Jura Rafal wrote:For me the most scary way of scrap tires utilisation was creating a .....reef of them.
introducing  such a contaminant into such extremely fragile habitat made my soul scream.

It seems my gut feeling was right as to toxicity of scrap tyre leachate in sea waters enviromnment.

Florida's 'Tire Reef' Has Turned Into an Environmental Disaster

1 year ago

David Croucher wrote:Chris Kott mentioned an environmentally viable disposal for tyres (we Brits spell it correctly, though it may tire you North Americans to hear that!)  

A company in Wales has been running a pilot plant that will recycle the materials on a small as well as a large scale.  If it has no problems in real life, it could be the answer:

WOW! Thanks for the link ... I graduated in 2002...but still try to know what's going on in the topic of scrap tire utilisation. The art is from 2006
do you happen to know how the plant is  doing nowadays ?
I'm going to google for it anyway.
A piece of good info  
You made my day.
1 year ago

John C Daley wrote: But I can say I have read of experiments in turning them into fuel for cars etc .
I just cannot recall the full story, but if that happens, we may not be able to get them anyway.

In one of my former post  I wrote: the products form scrap tire pyrolysis are:Oil, gas, coke.
"The oil obtained has a similar composition to heavy fractions from crude oil distillation thus after refination can be used as a fuel.
The gas is used as pirolisis energy source. The coke was considered  a waste. although there were trials to find an application for it.
unfortunately the process is not economically viable unless  the price of a oil barrel reaches 197$

As open air storage has been prohibited by law in EU it's cheaper to send  scrap tires for landfilling in Kuwait.
where sooner or later they will burst in flame due to self ignition and will contaminate our Mother Earth
(almost like wet hay. And almost  the same strain of bacteria is responsible for it )

1 year ago

Chris Kott wrote: I don't know if mushrooms would make unhealthily high levels of zinc bioavailable to plants, though. They seem to perform a more regulatory function than that.

Well.. I  live in a ex-mine area.  I can recall in my childhood we were strongly prohibited prom picking up mushrooms  in the nearby forests.

What I understood now is that the frutification of a fungi may contain a high concentration of heavy metals once the "intelligent network" decides the element is harmful for the rest of hyphae  it transports it to its most remote ends and fruits. (kinda kamikaze)
Once the soil is healthy (and mycorrhizal fungi are present) then conditions from the belows quotation (from a soil bioremediation book) may apply.

Arbuscular mycorrhizal fungi (Glomeromycota) are ubiquitous soil microbes considered essential for the survival and growth of plants in nutrient-deficient soils. They are frequently seen as a tolerance mechanism of plants in highly metal-polluted soils. Mycorrhizas constitute a bridge for nutrient transport from soils to plant roots. At higher soil metal levels, AMF are expected to reduce soil metal bioavailability since metals are sequestered in extraradical hyphae, therefore resulting in lower metal uptake in AM than non-AM plants. A range of environmental factors including soil metal concentrations and their bioavailability, soil absorption/desorption characteristics, as well as endogenous factors (e.g., the fungal properties and inherent heavy metal uptake capacity of plants) may influence the uptake of metals by mycorrhizal plants.
1 year ago

John Schinnerer wrote:. It basically said that used tire material buried in the ground doesn't seem to leach much of anything and since it's buried there's no offgassing and no UV-destabilization.

That's right. But the rapport you cited was pretty old.
And they didn't bother to do  long term experiments about influence of  soil microbial life on the product decomposition rate.
Once you ask Paul Satmets he will ensure you that fungi hyphae is a learning structure and learns how to produce new enzymes to digest any source of carbon it finds on its way.
I saw some YT video with where the oyster hyphae learned how to digest the cigarettes buts.
(chemically: it contains so many  PAH's that  decomposing it is a heavy task, nonetheless the fungus has managed.
When you take this under consideration I'd strongly discourage from putting such a potential source of Zn (zinc) into ground.
1 year ago