Preliminary integrated economic and environmental analysis of polyhydroxyalkanoates (PHAs) biosynthesis

Bioresources and Bioprocessing

Table 1 Data of raw material cost and PEI

Chemicals^a	Price (USD $/kg)^a	HTPI (kg⁻¹)^b	TTP (kg⁻¹)^b	HTPE (kg⁻¹)^b	ATP (kg⁻¹)^b	PCOP (kg⁻¹)^b
Na₂HPO₄	0.25	0.045	0.045	0	0.002	0
KH₂PO₄	0.3	0.156	0.156	0	0.005	0
(NH₄)₂SO₄	0.1	0.177	0.177	0	0.025	0
MgSO₄	0.05	0.070	0.070	0	0	0
CaCl₂	0.08	0.191	0.191	0	0	0
Na₂EDTA	1.55	0.156	0.156	0	0.007	0
FeCl₃	0.2	0.835	0.835	0.082	0.011	0
H₃BO₃	0.4	0.141	0.141	0.119	0.028	0
MnCl₂	0.3	0.488	0.488	0.021	0.014	0
ZnCl₂	0.18	1.070	1.070	0.238	0.065	0
CoCl₂	0.8	0.490	0.490	0.595	0.033	0
CuSO₄	1.15	1.250	1.250	0.095	1.380	0
Yeast extract	0.3	0	0	0	0	0
Soybean oil	0.615	0.059	0.059	0	0.489	0
Refined glycerol	0.4	0.030	0.030	0.048	0	0.993
Crude glycerol	0.2	0.030	0.030	0.048	0	0.993
Waste cooking oil^c	0.2	0.098	0.098	0	0.792	0

^aAll the chemical prices were obtained from Alibaba.com (Steinbüchel and Valentin 1995), with exception of soybean oil (Van Wegen et al. 1998)
^bThe PEI score can be obtained from the database of WAR algorithm graphical user interface (Environmental Protection Agency, U.S.)
^cPEI for waste cooking oil are of palmitic acid as most of the waste cooking oil are palm oil-based