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Diss Factsheets

Administrative data

Endpoint:
adsorption / desorption: screening
Type of information:
experimental study
Adequacy of study:
supporting study
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
documentation insufficient for assessment

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1986
Report date:
1986

Materials and methods

Test guideline
Qualifier:
no guideline available
GLP compliance:
no
Type of method:
batch equilibrium method
Media:
sewage sludge

Test material

Constituent 1
Chemical structure
Reference substance name:
Nickel, [29H,31H-phthalocyaninato(2-)-N29,N30,N31,N32]-, chlorosulfonyl derivs., reaction products with 2-[(4-aminophenyl)sulfonyl]ethyl hydrogen sulfate monosodium salt, sodium salts
EC Number:
305-644-9
EC Name:
Nickel, [29H,31H-phthalocyaninato(2-)-N29,N30,N31,N32]-, chlorosulfonyl derivs., reaction products with 2-[(4-aminophenyl)sulfonyl]ethyl hydrogen sulfate monosodium salt, sodium salts
Cas Number:
94891-43-7
Molecular formula:
C32 H16 N8 Ni . C8 H11 N O6 S2 . 2 Na
IUPAC Name:
Nickel, [29H,31H-phthalocyaninato(2-)-N29,N30,N31,N32]-, chlorosulfonyl derivs., reaction products with 2-[(4-aminophenyl)sulfonyl]ethyl hydrogen sulfate monosodium salt, sodium salts
Test material form:
solid: particulate/powder
Radiolabelling:
no

Study design

Test temperature:
room temperature

Batch equilibrium or other method

Analytical monitoring:
yes
Details on test conditions:
2 g/L sludge concentration
200 mg/L dye concentration

Results and discussion

Adsorption coefficient
Sample No.:
#1
Type:
other: adsorption to sewage sludge [% ]
Value:
55
Temp.:
20 °C
Matrix:
sewage sludge
Remarks on result:
other: pH not determined

Results: Batch equilibrium or other method

Recovery of test material:
>90% by precipitation with FeSO4
Transformation products:
not measured

Applicant's summary and conclusion

Validity criteria fulfilled:
not specified
Conclusions:
55% of a 100 mg/L dye solution adsorbs to sewage sludge (2 g/L). However, 90% of the substance were recovered after a chemical precipitation test with FeSO4 ( 1 g/L). Additionally, adsorption to activated carbon was measured (determined value: 38 mg/L). The general adsorption rate to activated sludge is relatively low and almost fully reversible which corresponds to the low log Kow and the high water solubility.