Wadsworth Center, New York State Department of Health, and Department of Environmental Health Sciences, School of Public Health, State University of New York at Albany , Empire State Plaza, P.O. Box 509, Albany, New York 12201-0509, United States.
Environ Sci Technol. 2014 Dec 2;48(23):13668-74. doi: 10.1021/es504769c. Epub 2014 Nov 14.
Very few studies describe the fate of artificial sweeteners (ASWs) in wastewater treatment plants (WWTPs). In this study, mass loadings, removal efficiencies, and environmental emission of sucralose, saccharin, aspartame, and acesulfame were determined based on the concentrations measured in wastewater influent, primary effluent, effluent, suspended particulate matter (SPM), and sludge collected from two WWTPs in the Albany area of New York State, U.S.A. All ASWs were detected at a mean concentration that ranged from 0.13 (aspartame) to 29.4 μg/L (sucralose) in wastewater influent, 0.49 (aspartame) to 27.7 μg/L (sucralose) in primary influent, 0.11 (aspartame) to 29.6 μg/L (sucralose) in effluent, and from 0.08 (aspartame) to 0.65 μg/g dw (sucralose) in sludge. Aspartame was found in 92% of influent SPM samples at a mean concentration of 444 ng/g dw, followed by acesulfame (92 ng/g) and saccharin (49 ng/g). The fraction of the total mass of ASWs sorbed to SPM was in the rank order: aspartame (50.4%) > acesulfame (10.9%) > saccharin and sucralose (0.8%). The sorption coefficients of ASWs ranged from 4.10 (saccharin) to 4540 L/kg (aspartame). Significant removal of aspartame (68.2%) and saccharin (90.3%) was found in WWTPs; however, sucralose and acesulfame were less efficiently removed (<2.0%). The total mass loading of sucralose, saccharin, and acesulfame in the WWTP that served a smaller population (∼15,000) was 1.3-1.5 times lower than that in another WWTP that served a larger population (∼100,000). The average daily loading of sucralose in both WWTPs (18.5 g/d/1000 people) was ∼2 times higher than the average loading of saccharin. The daily discharge of sucralose from the WWTPs was the highest (17.6 g/d/1000 people), followed by acesulfame (1.22 g/d/1000 people), and saccharin (1.07 g/d/1000 people). Approximately, 1180 g of saccharin and 291 g of acesulfame were transformed in or removed daily from the two WWTPs. This is the first study to describe the fate of ASWs, including the fraction found in SPM and in sludge, in addition to the aqueous portion of wastewater in WWTPs.
很少有研究描述人工甜味剂 (ASWs) 在废水处理厂 (WWTPs) 中的命运。在这项研究中，根据美国纽约州奥尔巴尼地区两个 WWTP 进水、初沉、出水、悬浮颗粒物 (SPM) 和污泥中测量的浓度，确定了三氯蔗糖、糖精、阿斯巴甜和安赛蜜的质量负荷、去除效率和环境排放。所有 ASWs 的检出浓度范围为 0.13（阿斯巴甜）至 29.4μg/L（三氯蔗糖），初沉物为 0.49（阿斯巴甜）至 27.7μg/L（三氯蔗糖），出水中为 0.11（阿斯巴甜）至 29.6μg/L（三氯蔗糖），污泥中为 0.08（阿斯巴甜）至 0.65μg/g dw（三氯蔗糖）。在 SPM 进水样本中，阿斯巴甜的检出率为 92%，平均浓度为 444ng/g dw，其次是安赛蜜（92ng/g）和糖精（49ng/g）。ASWs 被 SPM 吸附的总量比例顺序为：阿斯巴甜（50.4%）>安赛蜜（10.9%）>糖精和三氯蔗糖（0.8%）。ASWs 的吸附系数范围为 4.10（糖精）至 4540L/kg（阿斯巴甜）。研究发现，阿斯巴甜（68.2%）和糖精（90.3%）在 WWTPs 中有明显的去除效果；然而，三氯蔗糖和安赛蜜的去除效率较低（<2.0%）。服务于较小人口（约 15000 人）的 WWTP 中三氯蔗糖、糖精和安赛蜜的总质量负荷比服务于较大人口（约 100000 人）的 WWTP 低 1.3-1.5 倍。两个 WWTP 中三氯蔗糖的日平均负荷（18.5g/d/1000 人）约为糖精的 2 倍。从 WWTP 排放的三氯蔗糖日排放量最高（17.6g/d/1000 人），其次是安赛蜜（1.22g/d/1000 人）和糖精（1.07g/d/1000 人）。大约有 1180g 糖精和 291g 安赛蜜在这两个 WWTP 中被转化或每日从 WWTP 中去除。这是第一项描述 ASWs 在 WWTP 中命运的研究，包括在 SPM 和污泥中以及废水中的水溶液部分的研究。
Zotero 插件