John Hofmeyr

5 Questions 38 Answers 0 Followers

Questions related from John Hofmeyr

How do I update an existing publication to a newer version?

Version 5 was published a year ago. Version 6 is available now. How do I publish that without losing the existing number of "reads"?

04 March 2024 6,022 5 View

Is hydrothermal carbonisation of wet biomass commercialised at industrial scale?

I am interested in the following feedstocks sewage sludge, digestate and food waste.

28 September 2017 6,161 4 View

What are the typical N, P and K values of farmyard manure?

My question comes in three parts: 1) Where can I find references to the equivalent values in farmyard manure to such inorganic fertilizers as CAN, DAP etc 2) When such values are reported (and...

28 December 2016 2,578 58 View

How can I apply passive drying to poultry manure cheaply at small scale?

I am investigating domestic-scale and farm-scale pyrolysis to synthesise biochar from poultry manure and bedding also known as "chicken litter". The pyrolysis equipment is a batch reactor, so we...

11 September 2016 977 12 View

Are anaerobic microorganisms bad for plant growth? If yes, how can this be mitigated?

I have two departure-points and three questions. DEPARTURE-POINT 1: I understand that an aerobic environment is required (a) when making compost or vermicompost and (b) in healthy soil. i.e. the...

21 May 2016 4,538 18 View