Tue, 19 Dec 2023 05:50:08 +0000 http://www.greenbuildingforum.co.uk/newforum/ Lussumo Vanilla 1.0.3 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17479&Focus=296294#Comment_296294 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17479&Focus=296294#Comment_296294 Tue, 31 May 2022 20:25:09 +0100 djh https://www.newscientist.com/article/2321116-waste-wood-chemically-recycled-to-produce-material-stronger-than-steel/ that describes a way to make a new product "five times stronger than natural wood and can be made from any timber by-product, including shavings and sawdust". It sounds quite a promising approach to upcycling wood. Sadly the journal it is reported in is one of Elsevier's and I can no longer access it :( I'd appreciate any views about the technique's potential.

There's a link in the NS article to another, which links to an accessible journal item https://www.science.org/doi/epdf/10.1126/sciadv.abd7342 about a process for making transparent wood that is quite strong. This also sounds like quite a promising new process.]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17479&Focus=296295#Comment_296295 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17479&Focus=296295#Comment_296295 Tue, 31 May 2022 21:55:21 +0100 WillInAberdeen
It has many interesting properties
https://physicsworld.com/a/delignified-wood-could-help-cool-down-buildings/]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17479&Focus=296298#Comment_296298 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17479&Focus=296298#Comment_296298 Wed, 01 Jun 2022 09:49:21 +0100 Peter_in_Hungary
If it takes off I suspect it will go the same way as wood pellets for fuel which started off as a waste product but now trees are cut down to process into pellets]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17479&Focus=296299#Comment_296299 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17479&Focus=296299#Comment_296299 Wed, 01 Jun 2022 10:17:43 +0100 djh Posted By: WillInAberdeenSearch for "delignified wood" (they dissolve away the lignin and hemicellulose to leave just the cellulose fibres, which are tough and strong and can be compressed into a useful material, a bit like making paper).

It has many interesting properties https://physicsworld.com/a/delignified-wood-could-help-cool-down-buildings/
Yes the point of the new work was to produce similar or better results without removing the lignin, which provides structure and strength, as well as costing resources to remove. It seems all the projects are developments by the same groups in the US and China.]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17479&Focus=296300#Comment_296300 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17479&Focus=296300#Comment_296300 Wed, 01 Jun 2022 11:37:05 +0100 owlman http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17479&Focus=296301#Comment_296301 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17479&Focus=296301#Comment_296301 Wed, 01 Jun 2022 12:34:00 +0100 Peter_in_Hungary Posted By: owlmanResearch may eventually lead to using a similar process with waste straw, although seasonal collection may prove problematic.
I would expect seasonal storage to be on farm. Over here there are already bales of straw on farm with nowhere to go so I don't see a few months on farm storage pending delivery to be a problem.

However more and more farms are incorporating straw back into the soil (sometimes with added bacteria) to improve soil structure. A bit like bio fuel from cereal - or use it for food, you can only use it once so with every new use for 'waste' product eventually there is not enough waste (back to wood pellets as an e.g.)]]>