Department of Life Sciences, Central University of Tamil Nadu, CUTN Bridge, Neelakudy, Tamil Nadu 610005, India; Department of Civil Engineering, Anna University Regional Campus Tirunelveli, India.
Department of Civil Engineering, Anna University Regional Campus Tirunelveli, India.
Bioresour Technol. 2020 May;303:122951. doi: 10.1016/j.biortech.2020.122951. Epub 2020 Feb 1.
The present study aimed to employ energy efficient chemo thermal coupled sonic homogenization (CTSH) to obtain VFA from marine macroalgal hydrolysate, (Ulva fasciata). At first, chemo thermal homogenization (CTH) was applied on macroalgal biomass by adjusting the temperature, pH and treatment time from 60 to 90 ℃, 4-7 and 0-60 min, respectively. A higher organic matter solubilisation of 11.81% was obtained at an optimum pH of 6 at a temperature of 80 ℃ with 40 min of homogenization time. The results of CTSH implied that a higher organic matter solubilization of 26.4% was achieved by combined CTSH (sonic power & treatment time - 140 W & 14 min treatment time). CTSH considerably doubles the liquefaction in comparison with CTH. Based on OMS grouping, achieving 25% was sufficient for VFA production (2172.09 mg/L) and considered as economically feasible with net cost of 97.17 USD/ton of macroalgae.
本研究旨在利用节能的化学热声协同超声匀化（CTSH）技术从海洋大型海藻水解物（石莼）中获得挥发性脂肪酸（VFA）。首先，通过调整温度（60-90℃）、pH 值（4-7）和处理时间（0-60min），对大型海藻生物质进行化学热均化（CTH）。在温度为 80℃、pH 值为 6、处理时间为 40min 的最佳条件下，可获得 11.81%的较高有机物溶解率。CTSH 的结果表明，通过联合 CTSH（声能和处理时间-140W 和 14min 处理时间）可实现更高的有机物溶解率 26.4%。与 CTH 相比，CTSH 可使液化率提高一倍以上。根据 OMS 分组，达到 25%即可满足 VFA 生产（2172.09mg/L）的要求，且具有 97.17 美元/吨海藻的净成本，被认为在经济上是可行的。
