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Artwork for A Field Guide to Biochar Water Treatment

A Field Guide to Biochar Water Treatment

JK
Tens of paid subscribers

Low-cost DIY drinking water treatment using biochar to remove chemical pollutants.

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Substack
PricingFreemiumPublishesWeekly
Issues115Founded6 years agoLast Issue35 hours ago
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joshkearns.substack.com
Artwork for A Field Guide to Biochar Water Treatment

Latest Issues

Ecuador ‘26 recap

The objectives of this trip were:

  • field test and validate DIY UV and fluorescence spectrometers for water quality and biochar water treatment analysis

  • develop a column test method utilizing one or more suitable “unicorn” fluoropho...

35 hours ago
2

How to jungle-proof your spectrometer

As mentioned previously, one of our objectives is to make biochar and water quality testing more accessible by radically reducing equipment costs.

To this end, we’re trying to replace a ~$3,500 commercial UVA254 field spectrometer with a ~...

6 days ago
4
1

Field testing new methods and instruments

I feel like we have crammed six months’ worth of biochar water testing method development and instrument prototyping into the last six weeks. It has truly been a marathon renegade science session.

Ready or not, time to field test all this!...

14 days ago
6
3

Unicorn molecules & DIY spectrometers, oh my!

This is a quick note to let you know I have started uploading results to two pages in the Open Access Materials section about our current R&D projects to find fluorescent surrogate adsorbates and build radically inexpensive UV and fluoresce...

a month ago
4

DIY fluorescence and UV spectrometers

As described in the introduction to this R&D project, a significant hurdle to the widespread establishment of biochar and water quality testing field labs is the cost of analytical instrumentation.

Left-to-right: the AquaFluor made by Tu...

a month ago
2
4

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Authors

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  • JK

    I am an environmental chemist and engineer with a specialty in appropriate technologies for low-resource settings.

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