effect, their co-CFP characteristics showed similar tendency (Fig. 3a and b). Zhang et al. (2012) studied the co-CFP of pine wood and methanol (H/Ceff = 2), and their results showed that the yield of target products from co-CFP of pine wood and methanol at the optimal co-CFP temperature (450 C) was still lower than running these two feedstocks under their optimal CFP temperatures (pine wood: 600 C; methanol: 400 C). The issue was the significant difference between the optimal CFP temperatures for pine wood and methanol, as CFP of pine wood needed a high optimal temperature and CFP of methanol needed a low optimal temperature. Co-CFP process of biomass and high density polyethylene (HDPE) also had this problem (Zhang et al., 2015). For FW, it had almost the same CFP characteristics as biomass, and their optimal CFP conditions were similar. Therefore, co-CFP of biomass and FW could promote the production of petrochemicals. FW could potentially act as a better hydrogen supplier in co-CFP process.