@Dogyote, sorry for the slow reply. This is a tricky question. It depends on what sort of interest you have in biochar, to be honest. Are you making it at home? Are you buying it for a garden? Are you interested in commercial production? It is a very fast evolving area of interest and there is a lot of information that seems a bit questionable to me - but maybe just because I am not up-to-date.
NYT is spouting every headline they can imagine to shift votes toward Trump, and not just lately. Their entire editorial focus is to cast confusion on Democrats' prospects. They should be recognized as firmly partisan and no longer serving a journalistic purpose. Unfortunate, but that's the times in which we live.
There is a new process for treating wastewater sludge that destroys the microfibers, so that is good news at least. I think it may be expensive, of course. It is called "hydrothermal carbonization". Basically put the sludge in a giant pressure-cooker and the heat breaks the plastics into carbon and some water-soluble residual molecules which can go back to the start of the wastewater treatment plant to be biodegraded. But like others say, the main source in general is tires - not sure if they know whether tire microplastics are the main source in agricultural land though.
From the immortal Journal of Irreproducible Results, "The Data Enrichment Method":
". . .its principal shortcoming is that before the enrichment process can be started, some data must be collected. It is quite true that a great deal is done with very little information, but this should not blind one to the fact that the method still embodies the 'raw-data flaw'. The ultimate objective, complete freedom from the inconvenience and embarrassment of experimental results, still lies unattained before us."
We are going to need a lot more of this kind of work. I read on permaculture sites about the need to pre-load biochar with nutrients - planting seeded biochar without nutrients could be unproductive. Biochar loading also depends on soil type, how the biochar is made, and how it is applied (tilled in or top-dressed). Size probably matters - big chunks will eventually break apart, but moderate size reduction gives better distribution. Fine dust will not provide the same degree of soil aeration. So, the devil is in the details.
The statistic of low Firefox use is based on accessing US government websites. Could it be that there is significantly LESS government site access by the population of users that prefer Firefox? As a corollary I recently read that game companies observed significantly HIGHER bug reporting from Linux users on Steam, not because there were more Linux-related bugs, but simply because that set of users were more likely to initiate bug reports. Of course Firefox is not Linux and Steam is not the world, but a statistic from a relatively narrow segment of the internet should not be assumed representative of the whole.
Biochar is such an expanding area of investigation, it would be difficult to write a comprehensive book at this point. Of course the root idea of partial-combustion to make soil amendment is well-enough known, but there is much being learned about how to alter the properties of the char by how the pyrolysis is performed. There is much to be learned about how much char to add and how to pretreat the char. Beside burning to make char, there are other ways it can be heated and those affect the type of pyrolysis products that form - molten salt, steam, and subcritical hot water are all gaining prominence. The management and use of the pyrolysis products aside from the char is also a complex topic.
sorry nobody has replied - I'm no help for you from here in Puerto Rico. Are you familiar with the site iNaturalist.org? When we're looking for a species that seems to be missing, we use iNaturalist to check for sightings in the region. You can filter by dates.
I also recently read about "hydrocarbonization" which is another approach for pyrolyzing sewage sludge. Pyrolysis of biomass on a dry basis is often energy-intensive in part because of moisture in the biomass. Nowhere is this more relevant than with sewage sludge, which leaves a wastewater plant at only about 25% solids, typically (though it has a solid appearance like damp clay). If the pyrolysis is performed IN water (which means under pressure if one wants to avoid evaporating the contained water), it can not only still occur, but the water at high temperature and pressure is an active medium for converting some of the biomass into smaller organic molecules.
Upshot is that there is quite a lot of work going on nowadays to be creative with biomass management - that seemed to be of low interest even a decade ago.
wrong, western philosophy is often based on dichotomies - something is either this or that, but it is more of an analytical tool (I am not nature despite that I am a part of nature). Eastern philosophies are often mystic, though there is western mysticism - that some aspects of existence are incomprehensible on a rational basis and therefore dichotomies are illusory. But such a perspective does not inherently make people better stewards of the environment - in fact they might conclude that their every action is "natural" by definition.
In the US, stove burners are rated in the confusing units of "BTUs" which is actually a unit of energy, not power. When they say BTU, they mean BTU/hour. The highest-rated burners on a typical stove are about 10,000 Btu (per hour), but high-end stoves can get up to about 18000 - that is equivalent to about 5000 watts. My single-element induction top is only rated for about 1000 watts. So although it heats and cools rapidly, I suspect it is not up to the demands of wok cooking (unless one wants to cook only very small portions).
not Chinese, but I cook a lot with a wok. I also have a single induction cooktop and surprisingly, the wok has enough iron to work with it while some old cheap conventional cookware did not. However, wok cooking needs to be hot all over the wok and not just in that little point where the wok is close enough to the induction coil.
I have a conventional propane stove which I need to keep, because here in Puerto Rico the power system is quite unreliable (especially during a bad hurricane year). But the conventional stove burners are not really hot enough. With a 1/16 - inch drill bit I could increase one of the burners capacity substantially. I painted the stove knob red so people have some warning when they light that burner! It burns more gas, but wok cooking is really fast, so in the long run it is probably more efficient than lots of other cooking approaches.
I would definitely consider a wok-shaped induction heater. Induction heating is quite remarkable.
I'd hate to think modern society is based on a giant elaboration of poker, but I can't rule it out - it MIGHT not be the worst outcome, but a pseudo-equilibrium far from the best. Every young person knows something accessible in the past is now lost to them - not sure what it is, but there is a hole. And yet, the social track laid out is almost unavoidable.
I traveled a good bit the past 20 years and I've experienced first-hand the really hard work and the immense gratification of simple farming. Nobody wants to live like that (at least so they think). Having done it, I can't even say I recommend it over what modern society seems to offer. But since the best option on offer is not a true equilibrium, as the climate is making abundantly clear, what is on offer may be illusory. An alternative equilibrium - tried and true - is worth considering when opportunity arises: subsistence farming. It is NOT simple or easy - don't wait until there is no other option.
I have heard this, and I can imagine it is true, but have you seen any analysis? There must be a large crew traveling and lots of equipment - transportation is a big user of petroleum in general -- for entertainment. Though they say the entertainment is good.
Swimming pools are normally constructed empty. They were withstanding surrounding soil before they were filled, and concrete strength increases with age (for about 90 days, typically). On the other hand, a sunken structure like a pool that is roofed over, becomes a "confined space". Unlike a typical structure, heavier-than-air gases cannot escape from the pool. Such gases could originate from the drain system or flow from leakage outside the pool area. For examples, leaking propane or various gases from sewer lines in the vicinity. A sunken greenhouse would almost certainly be a building code violation for that reason. If you build it, ventilate it by means both active and passive and do not enter if you can't verify that ventilation is working.
It is not a surprising situation at this point - oil and gas companies already had a large available supply of CO2 from "sweetening" of natural gas. We have to understand the dramatic difference between "capturing" CO2 - meaning capturing from a point source like a stack or process - and "removing" CO2 - meaning removing it from the atmosphere. In normal use, these terms have such similar meanings that it is very easy for nefarious actors to conflate them. It is very easy for regulators to become confused. It is very easy for the oil and gas industry to take advantage of the situation. I think the key solution is education.
The technology to capture CO2 from industrial streams where it is already concentrated, is quite different that removal. Advances in capture technology are only stop-gap and can be better driven by strong enforcement of ever-tighter emission limits than subsidizing of costs.
@Dogyote, sorry for the slow reply. This is a tricky question. It depends on what sort of interest you have in biochar, to be honest. Are you making it at home? Are you buying it for a garden? Are you interested in commercial production? It is a very fast evolving area of interest and there is a lot of information that seems a bit questionable to me - but maybe just because I am not up-to-date.
NYT is spouting every headline they can imagine to shift votes toward Trump, and not just lately. Their entire editorial focus is to cast confusion on Democrats' prospects. They should be recognized as firmly partisan and no longer serving a journalistic purpose. Unfortunate, but that's the times in which we live.
I'd say no in general, but I hold the reins very loosely . . .
There is a new process for treating wastewater sludge that destroys the microfibers, so that is good news at least. I think it may be expensive, of course. It is called "hydrothermal carbonization". Basically put the sludge in a giant pressure-cooker and the heat breaks the plastics into carbon and some water-soluble residual molecules which can go back to the start of the wastewater treatment plant to be biodegraded. But like others say, the main source in general is tires - not sure if they know whether tire microplastics are the main source in agricultural land though.
From the immortal Journal of Irreproducible Results, "The Data Enrichment Method": ". . .its principal shortcoming is that before the enrichment process can be started, some data must be collected. It is quite true that a great deal is done with very little information, but this should not blind one to the fact that the method still embodies the 'raw-data flaw'. The ultimate objective, complete freedom from the inconvenience and embarrassment of experimental results, still lies unattained before us."
https://toot.cat/@CadeJohnson/111799964374037323
We are going to need a lot more of this kind of work. I read on permaculture sites about the need to pre-load biochar with nutrients - planting seeded biochar without nutrients could be unproductive. Biochar loading also depends on soil type, how the biochar is made, and how it is applied (tilled in or top-dressed). Size probably matters - big chunks will eventually break apart, but moderate size reduction gives better distribution. Fine dust will not provide the same degree of soil aeration. So, the devil is in the details.
The statistic of low Firefox use is based on accessing US government websites. Could it be that there is significantly LESS government site access by the population of users that prefer Firefox? As a corollary I recently read that game companies observed significantly HIGHER bug reporting from Linux users on Steam, not because there were more Linux-related bugs, but simply because that set of users were more likely to initiate bug reports. Of course Firefox is not Linux and Steam is not the world, but a statistic from a relatively narrow segment of the internet should not be assumed representative of the whole.
Biochar is such an expanding area of investigation, it would be difficult to write a comprehensive book at this point. Of course the root idea of partial-combustion to make soil amendment is well-enough known, but there is much being learned about how to alter the properties of the char by how the pyrolysis is performed. There is much to be learned about how much char to add and how to pretreat the char. Beside burning to make char, there are other ways it can be heated and those affect the type of pyrolysis products that form - molten salt, steam, and subcritical hot water are all gaining prominence. The management and use of the pyrolysis products aside from the char is also a complex topic.
sorry nobody has replied - I'm no help for you from here in Puerto Rico. Are you familiar with the site iNaturalist.org? When we're looking for a species that seems to be missing, we use iNaturalist to check for sightings in the region. You can filter by dates.
I also recently read about "hydrocarbonization" which is another approach for pyrolyzing sewage sludge. Pyrolysis of biomass on a dry basis is often energy-intensive in part because of moisture in the biomass. Nowhere is this more relevant than with sewage sludge, which leaves a wastewater plant at only about 25% solids, typically (though it has a solid appearance like damp clay). If the pyrolysis is performed IN water (which means under pressure if one wants to avoid evaporating the contained water), it can not only still occur, but the water at high temperature and pressure is an active medium for converting some of the biomass into smaller organic molecules.
Upshot is that there is quite a lot of work going on nowadays to be creative with biomass management - that seemed to be of low interest even a decade ago.
wrong, western philosophy is often based on dichotomies - something is either this or that, but it is more of an analytical tool (I am not nature despite that I am a part of nature). Eastern philosophies are often mystic, though there is western mysticism - that some aspects of existence are incomprehensible on a rational basis and therefore dichotomies are illusory. But such a perspective does not inherently make people better stewards of the environment - in fact they might conclude that their every action is "natural" by definition.
lmao
In the US, stove burners are rated in the confusing units of "BTUs" which is actually a unit of energy, not power. When they say BTU, they mean BTU/hour. The highest-rated burners on a typical stove are about 10,000 Btu (per hour), but high-end stoves can get up to about 18000 - that is equivalent to about 5000 watts. My single-element induction top is only rated for about 1000 watts. So although it heats and cools rapidly, I suspect it is not up to the demands of wok cooking (unless one wants to cook only very small portions).
not Chinese, but I cook a lot with a wok. I also have a single induction cooktop and surprisingly, the wok has enough iron to work with it while some old cheap conventional cookware did not. However, wok cooking needs to be hot all over the wok and not just in that little point where the wok is close enough to the induction coil.
I have a conventional propane stove which I need to keep, because here in Puerto Rico the power system is quite unreliable (especially during a bad hurricane year). But the conventional stove burners are not really hot enough. With a 1/16 - inch drill bit I could increase one of the burners capacity substantially. I painted the stove knob red so people have some warning when they light that burner! It burns more gas, but wok cooking is really fast, so in the long run it is probably more efficient than lots of other cooking approaches.
I would definitely consider a wok-shaped induction heater. Induction heating is quite remarkable.
I'd hate to think modern society is based on a giant elaboration of poker, but I can't rule it out - it MIGHT not be the worst outcome, but a pseudo-equilibrium far from the best. Every young person knows something accessible in the past is now lost to them - not sure what it is, but there is a hole. And yet, the social track laid out is almost unavoidable.
I traveled a good bit the past 20 years and I've experienced first-hand the really hard work and the immense gratification of simple farming. Nobody wants to live like that (at least so they think). Having done it, I can't even say I recommend it over what modern society seems to offer. But since the best option on offer is not a true equilibrium, as the climate is making abundantly clear, what is on offer may be illusory. An alternative equilibrium - tried and true - is worth considering when opportunity arises: subsistence farming. It is NOT simple or easy - don't wait until there is no other option.
I have heard this, and I can imagine it is true, but have you seen any analysis? There must be a large crew traveling and lots of equipment - transportation is a big user of petroleum in general -- for entertainment. Though they say the entertainment is good.
Swimming pools are normally constructed empty. They were withstanding surrounding soil before they were filled, and concrete strength increases with age (for about 90 days, typically). On the other hand, a sunken structure like a pool that is roofed over, becomes a "confined space". Unlike a typical structure, heavier-than-air gases cannot escape from the pool. Such gases could originate from the drain system or flow from leakage outside the pool area. For examples, leaking propane or various gases from sewer lines in the vicinity. A sunken greenhouse would almost certainly be a building code violation for that reason. If you build it, ventilate it by means both active and passive and do not enter if you can't verify that ventilation is working.
the ultimate run-away train! No matter how impossibly big it is, it just grew infinitely bigger in the past second.
It is not a surprising situation at this point - oil and gas companies already had a large available supply of CO2 from "sweetening" of natural gas. We have to understand the dramatic difference between "capturing" CO2 - meaning capturing from a point source like a stack or process - and "removing" CO2 - meaning removing it from the atmosphere. In normal use, these terms have such similar meanings that it is very easy for nefarious actors to conflate them. It is very easy for regulators to become confused. It is very easy for the oil and gas industry to take advantage of the situation. I think the key solution is education.
The technology to capture CO2 from industrial streams where it is already concentrated, is quite different that removal. Advances in capture technology are only stop-gap and can be better driven by strong enforcement of ever-tighter emission limits than subsidizing of costs.