Department of Chemical Engineering, University of Almería, 04120 Almería, Spain.
J Hazard Mater. 2011 Feb 28;186(2-3):1924-9. doi: 10.1016/j.jhazmat.2010.12.100. Epub 2010 Dec 25.
The use of the solar photo-Fenton process is proposed to degrade Paracetamol in water in order to form biodegradable reaction intermediates which can be finally removed with a downstream biological treatment. Firstly, biodegradability enhancement with photo-Fenton treatment time has been evaluated; the minimum mineralization level should be at least 18.6% where Paracetamol has been degraded and biodegradability efficiency is higher than 40%. 20 mg L(-1) of Fe(2+) and 200 mg L(-1) of H(2)O(2) were selected in a lab-scale study looking at Paracetamol's degradation rate and organic carbon mineralization rate. As a result of scaling up the process at a pilot plant, 157.5 mg L(-1) of Paracetamol (∼1 mM) was treated in 25 min of photo-Fenton treatment achieving the desired biodegradability. A further economic evaluation shows how the proposed treatment strategy markedly increases plant efficiency, resulting in an 83.33% reduction in reagent cost and a 79.11% reduction in costs associated with reaction time. Total cost is reduced from 3.4502 €/m(3) to 0.7392 €/m(3).
建议使用太阳能光芬顿工艺来降解水中的扑热息痛，以形成可生物降解的反应中间体，然后可以用下游的生物处理将其最终去除。首先，评估了光芬顿处理时间对生物降解性的增强作用；最低矿化水平至少应为 18.6%，在此条件下扑热息痛已被降解，生物降解效率高于 40%。在实验室规模的研究中，选择 20mg/L 的 Fe(2+)和 200mg/L 的 H(2)O(2)，以研究扑热息痛的降解速率和有机碳矿化速率。通过在中试工厂中放大该工艺，在 25 分钟的光芬顿处理中处理了 157.5mg/L 的扑热息痛（约 1mM），达到了所需的生物降解性。进一步的经济评估表明，所提出的处理策略如何显著提高了工厂的效率，从而使试剂成本降低了 83.33%，与反应时间相关的成本降低了 79.11%。总成本从 3.4502 欧元/m(3)降低到 0.7392 欧元/m(3)。
