Journal of Waste Management

Research Article

Modeling the Sorption of Ni2+ and Co2+ on Saprist Peat Using the Response Surface Methodology

Table 1

Summary of physicochemical parameters of saprist peat.
ParameterValue
Degree of decomposition*7-8H
pH (in deionized water)4.2
Moisture content (%)86
Fiber content (%)69
Ash content (%)9
Organic matter (%)91
Dry bulk density (g/cm3)0.28
pH 7.0 CEC** (meq/100 g)70
Degree of decomposition is based on the von Post scale in which the percentage of undecomposed fiber in peat is used in the classification of a sample from 1H (least decomposed to 10H (most decomposed) [28]).
**CEC (cation exchange capacity) based on the calcium acetate/chloride method [29].
Other parameters were determined using the American Society for Testing and Materials (ASTM) for soils methods.