BiGchar analyses
|
|
Unit |
Limit of Reporting |
Preferred value |
Typical range for BiGchars |
|
EC |
Ds/m |
0.01 |
<200 |
2-16 |
|
pH (CaCl2) |
pH units |
0.04 |
<10 |
7-10 |
|
Iodine Number |
mg/kg |
|
>400 |
|
|
Bray Phosphorus |
mg/kg |
0.06 |
>15 |
100-400 |
|
Colwell Phosphorus |
mg/kg |
2 |
>40 |
500-2500 |
|
Total Nitrogen |
% |
0.02 |
Higher better |
0.2-2 |
|
Total Carbon |
% |
0.2 |
>40 |
40-85 |
|
Fixed carbon |
% air dry |
|
>35 |
35-80 |
|
Volatile matter |
% air dry |
|
<20 |
2-20 |
|
Ash |
% air dry |
|
<50 |
15-50 |
|
KCl Extractable Ammonium-N |
mg/kg |
0.3 |
|
0-20 |
|
KCl Extractable Nitrate-N |
mg/kg |
0.2 |
|
0-200 |
|
Acid Neutralising Capacity |
% CaCO3 |
0.5 |
Depends on application |
5-35 |
|
ICP Elements and Metals |
|
|
|
|
|
Aluminium |
% |
0.0005 |
Lower better |
0.2-2 |
|
Arsenic |
mg/kg |
5 |
<20 |
0-20 |
|
Boron |
mg/kg |
4 |
Lower better |
0-20 |
|
Calcium |
% |
0.0003 |
Higher better |
0.2-4 |
|
Cadmium |
mg/kg |
0.3 |
<5 |
0-5 |
|
Cobalt |
mg/kg |
0.4 |
<150 |
0-50 |
|
Chromium |
mg/kg |
0.2 |
<250 |
0-100 |
|
Copper |
mg/kg |
0.2 |
<375 |
0-100 |
|
Iron |
% |
0.00003 |
|
0.5-4 |
|
Potassium |
% |
0.0004 |
|
0.5-5 |
|
Magnesium |
% |
0.00006 |
|
0.1-1 |
|
Manganese |
mg/kg |
0.1 |
|
200-800 |
|
Molybdenum |
mg/kg |
0.3 |
<20 |
0.2-5 |
|
Sodium |
% |
0.0005 |
|
1-4 |
|
Nickel |
mg/kg |
0.7 |
<125 |
0-50 |
|
Phosphorus |
% |
0.0003 |
|
0.2-2 |
|
Lead |
mg/kg |
2 |
<150 |
0-2 |
|
Sulfur |
% |
0.0006 |
|
0-0.2 |
|
Selenium |
mg/kg |
4 |
<8 |
0-4 |
|
Zinc |
mg/kg |
0.8 |
<700 |
100-500 |
|
Exchangeable Cations |
|
|
|
|
|
Cation Exchange Capacity
(CEC) |
cmol(+)/kg |
|
>10 |
20-100 |
|
Calcium/Magnesium Ratio |
|
|
|
0.5-5 |
|
Aluminium Saturation |
% |
|
<0.5 |
<0.1 |
Note: Most characteristics are determined by the composition of the
feedstock. The processing conditions primarily influence the ash,
total carbon and fixed carbon values. |
