TY - JOUR
T1 - Techno-economic analysis of caffeine and catechins production from black tea waste
AU - Sayar, Nihat Alpagu
AU - Durmaz Şam, Selçen
AU - Pinar, Orkun
AU - Serper, Damla
AU - Sarıyar Akbulut, Berna
AU - Kazan, Dilek
AU - Sayar, Ahmet Alp
PY - 2019/11/1
Y1 - 2019/11/1
N2 - This work establishes a proof of concept level economic assessment of a novel commercial production scheme for caffeine and catechins from black tea waste collected in the north-eastern region of Turkey. A base case in which dichloromethane (DCM) is used as the product extracting agent and an alternative greener case where DCM is replaced with environmentally friendlier ethyl acetate (EA) were designed and modelled on Superpro Designer platform. Profitability analyses were conducted for both cases, each treating 30,000 MT/year of black tea waste. Under the base case scenario, the Net Present Value (NPV) was calculated as 16,249,000 USD whereas the alternative scenario gave an NPV of 4,379,000 USD with corresponding payback times of 5.64 and 6.79 years. A novel techno-economic evaluation method involving the metamodeling of Superpro Designer models via Kriging and subsequent multi-objective optimization is incorporated into the economic assessment and applied to the two cases in order to optimize selected dominant process variables. Optimal values for dominant operating process variables were found using 3-D graphs simulating the combined effects of these variables on NPV. Results showed that the base case has a greater potentiality to generate profit. However, the greener case could be implemented if it is supported on environmental and toxicity issues considering the potential health and pollution preventive benefits. The present work demonstrates how the integration of novel conceptual design, modelling, and optimization approaches can foster broader evaluation of bioprocesses utilizing negative-value agro-wastes for the production of value-added chemicals.
AB - This work establishes a proof of concept level economic assessment of a novel commercial production scheme for caffeine and catechins from black tea waste collected in the north-eastern region of Turkey. A base case in which dichloromethane (DCM) is used as the product extracting agent and an alternative greener case where DCM is replaced with environmentally friendlier ethyl acetate (EA) were designed and modelled on Superpro Designer platform. Profitability analyses were conducted for both cases, each treating 30,000 MT/year of black tea waste. Under the base case scenario, the Net Present Value (NPV) was calculated as 16,249,000 USD whereas the alternative scenario gave an NPV of 4,379,000 USD with corresponding payback times of 5.64 and 6.79 years. A novel techno-economic evaluation method involving the metamodeling of Superpro Designer models via Kriging and subsequent multi-objective optimization is incorporated into the economic assessment and applied to the two cases in order to optimize selected dominant process variables. Optimal values for dominant operating process variables were found using 3-D graphs simulating the combined effects of these variables on NPV. Results showed that the base case has a greater potentiality to generate profit. However, the greener case could be implemented if it is supported on environmental and toxicity issues considering the potential health and pollution preventive benefits. The present work demonstrates how the integration of novel conceptual design, modelling, and optimization approaches can foster broader evaluation of bioprocesses utilizing negative-value agro-wastes for the production of value-added chemicals.
KW - Bioprocess design
KW - Black tea waste
KW - Caffeine
KW - Catechins
KW - Kriging
KW - Techno-economic analysis
UR - http://www.scopus.com/inward/record.url?scp=85071424260&partnerID=8YFLogxK
U2 - 10.1016/j.fbp.2019.08.014
DO - 10.1016/j.fbp.2019.08.014
M3 - Article
AN - SCOPUS:85071424260
SN - 0960-3085
VL - 118
SP - 1
EP - 12
JO - Food and Bioproducts Processing
JF - Food and Bioproducts Processing
ER -