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Figure 1

Mechanism of degradation of cellulose acetate.
Mechanism of degradation of cellulose acetate.

Figure 2

Schematic diagram of experimental setup for measuring the amount of carbon dioxide evolved.
Schematic diagram of experimental setup for measuring the amount of carbon dioxide evolved.

Figure 3

Degree of biodegradation of test samples.
Degree of biodegradation of test samples.

Figure 4

GPC Chromatogram of cellulose acetate filter – A. Control (smoked filter) and B. Sample (resulting compost of smoked filter).
GPC Chromatogram of cellulose acetate filter – A. Control (smoked filter) and B. Sample (resulting compost of smoked filter).

Figure 5

GPC Chromatogram of combined material filter – A. Control (smoked filter) and B. Sample (resulting compost of smoked filter).
GPC Chromatogram of combined material filter – A. Control (smoked filter) and B. Sample (resulting compost of smoked filter).

Figure 6

GPC Chromatogram for DE-Tow™ filter – A. Control (smoked filter) and B. Sample (resulting compost of smoked filter).
GPC Chromatogram for DE-Tow™ filter – A. Control (smoked filter) and B. Sample (resulting compost of smoked filter).

Degree of biodegradation and percentage variation between the samples.

Serial No. Sample identity Experimental day Rep-1 Rep-2 Rep-3 Mean Variance in % biodegradation
1 CTEC filter 37 95.6 90.7 99.7 95.3 0.28 −4.86 4.58
2 Bidi butt 54 91.6 90.9 93.7 92.1 −0.51 −1.27 1.77
3 IP filter 55 98.3 90.3 91.5 93.4 5.28 −3.28 −2.00
4 CMF filter 86 99.7 98.8 90.3 96.2 3.57 2.63 −6.20
5 DE-TowTM filter 97 95.0 90.1 90.5 91.9 3.41 −1.92 −1.49
6 CA filter 151 90.1 92.2 94.1 92.1 −2.21 0.07 2.13

Result of compost analysis.

Serial No. Parameters Result Specification as per ISO 14855-1 Analytical Method
1 Total dry solids (%) 52.0 50 – 55 ISO 14855-1
2 pH of compost 8.77 7 – 9 ISO 14855-1
3 Total volatile solids of compost (%) 29.7 # 30 ISO 14855-1
4 Organic carbon (%) 10.8 In-house validated method using CHNS* analyzer
5 Total nitrogen (%) 2.04 In-house validated method using Kjeldahl apparatus (KjelMaster K 375)
6 C/N Ratio 5.29 ISO 14855-1
7 Total Plate Count, cfu/g (TPC) 8.5 × 105 IS 5402Part 1:2021
8 Yeast and Mould, cfu/g (YMC) 2.0 × 104 IS 5403:1999 (Reaffirmed 2018)

Validity of the test.

Parameters Result Specification
Degree of biodegradation of reference materials 70% in 38 days 70% in 45 days
CO2 per g of volatile solids after 10 days (mg/g) 97.0 mg/g of volatile solids 50–150 mg of CO2/g of volatile solids after 10 days of incubation
Difference between % biodegradation of the reference material 2.24 – 6.35% Less than 20%
eISSN:
2719-9509
Język:
Angielski
Częstotliwość wydawania:
4 razy w roku
Dziedziny czasopisma:
General Interest, Life Sciences, other, Physics