Deshusses Lab News

September 1, 2014

3 New Papers In-Press or Published

A few papers are in press or published, including:

  • "A robust framework to predict mercury speciation in combustion flue gases" (HAZMAT)
  • "Application of the finite difference method to model pH and substrate concentration in a double-chamber microbial fuel cell" (Environ. Technol.), and
  • "Net methylation of mercury in estuarine sediment microcosms amended with dissolved, nanoparticulate, and microparticulate mercuric sulfides" (Environ. Sci. Technol).

Find direct links to the papers on the Publications page.

August 15, 2014

Completion Nears for Supercritical Oxidation Unit

Our supercritical water oxidation unit for neighborhood sanitation is nearing completion: see timeline and pictures.

Thanks to Andy Miller from Jacoby's lab in Mizzou for helping with construction during the summer.

August 1, 2014

Group Member Updates

  • We are saying bye to Mustafa Aslan and Renxi Zhang, after one year sabbatical in the Deshusses' lab. Mustafa produced hydrogen from duckweed by dark-fermentation and Renxi worked on control of fecal odors.
  • We are welcoming new graduate student Trisha Dupnock who joined the PhD program.
  • Valentin Michel, who is from France, conducted a six-month research stay working on controlling sulfur formation in biotrickling filters treating biogas.
  • Several undergrads spent time in the lab during the summer, including: Matthieu Sieredzki (NCSU), Emmanuel Assa (Stanford)

March 1, 2014

Gates Foundation Toilet Fair in New Delhi

We are showcasing our two sanitation projects at the Gates Foundation Toilet Fair in New Delhi.

Here are the links for two videos on the projects:

and below are pictures of our Anaerobic Digestion Pasteurization Latrine (ADPL) system. The biogas-powered heat sterilization systems are simple and cheap. On the right of the picture (green vessel) is an anaerobic digester (here connceted to an eToilet from ERAM Scientific). The heat sterilization system pasteurizes the effluent from the digester. The system is very energy efficient, and enough biogas is produced in the digester to keep the effluent above 70 C, thereby killing all pathogens.

December 20, 2013

Derek Chitwood Visits Lab

Derek Chitwood visiting labOld friend visiting: Derek Chitwood, postdoc in Deshusses' lab in around 2000 made a quick stop at Duke at the occasion of UNC's Conference on Water and Health. Derek now heads an NGO in Southwest China. They make simple clay/ceramic filters that provides safe drinking water. Marc and Derek are holding a simple heater/heat exchange built in Kenya (see Aaron's project below)

Aaron Forbis-Stokes (PhD student in Deshusses lab) is spending the summer in Eldoret Kenya to deploy our anaerobic digester - biogas powered heat/heat recovery pasteurization system for safe sanitation system in the field.

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