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Re: Biodiesel

Further to my posting earlier, this article http://www.popularmechanics.com/cars/al ... ls/4311498 explains the problem.
by Clive
Tue Aug 05, 2014 5:53 am
 
Forum: 9. Transport
Topic: Biodiesel
Replies: 8
Views: 8083

Re: Biodiesel

Two separate issues here: the catalyst is a problem during the processing stage, I had assumed it would be removed before using the biodiesel. It is the biodiesel itself that adversely affects the seals in the injection system. In my previous post I referred to some systems not being compatible, I a...
by Clive
Tue Aug 05, 2014 5:34 am
 
Forum: 9. Transport
Topic: Biodiesel
Replies: 8
Views: 8083

Greetings from New Zealand

I am a retired civil engineering lab. technician, most of my career on hydro-electric construction sites in New Zealand, plus a few years on Rarotonga in the Cook Islands, testing the concrete on the Rarotonga International Airport. Despite my work being in the field of civil engineering, the necess...
by Clive
Tue Jul 29, 2014 1:50 am
 
Forum: New members
Topic: Greetings from New Zealand
Replies: 0
Views: 1706

Concrete

Page 129 states "Concrete is...beguilingly simple: stir together one bucket of cement with two buckets of sand or gravel, and enough water to make a thick "gloop". Not correct - cement plus sand make mortar, cement plus sand plus gravel make concrete. Assuming a loose density of 1.35 ...
by Clive
Sat Jul 26, 2014 3:52 am
 
Forum: 6. Materials
Topic: Concrete
Replies: 1
Views: 3321

Biodiesel

Page 190 refers: I am not against biodiesel as such, but it is not as simple as it seems. Sodium hydroxide reacts with methanol to form sodium methoxide, the catalyst in the process - this is highly caustic, even more so than straight sodium hydroxide. Also, not all diesel engines take kindly to bio...
by Clive
Sun Jul 13, 2014 9:29 pm
 
Forum: 9. Transport
Topic: Biodiesel
Replies: 8
Views: 8083

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