Abstract: In order to reduce disinfection by-products in water purification plants, five kinds of activated carbon materials with different iodine values, including coconut shell-derived and columnar materials, are selected to treat with the precursor tryptophan.Effects of different activated carbon materials on the removal of tryptophan under different conditions are studied.Results show that columnar activated carbon with an iodine value of 800 exhibits the best removal effect when pH value changes.Most activated carbon materials show their best removal effect at pH=4.The service life and operation cycle of activated carbon can affect the removal effect.Coconut shell-derived activated carbon with an iodine value of 800 and two kinds of columnar activated carbon show a downward trend during the 16-hour adsorption time, while the other two coconut shell-derived ones do not show a significant decline.Coconut shell-derived activated carbon with an iodine value of 800 and two kinds of columnar activated carbon present better removal effect in about 7 hours.With the increase of tryptophan concentration, columnar activated carbon materials give better removal effect.Columnar activated carbon with an iodine value of 1, 000 exhibits a better removal effect to low concentration tryptophan (1-2 mg·L-1) while that with an iodine value of 800 shows better removal effect to slightly higher concentration (2-5 mg·L-1).In a sum, columnar activated carbon with an iodine value of 800 has the best removal effect on trace organic matters such as tryptophan, which provides a certain reference for the application research on the removal of tryptophan and other disinfection by-product precursors.
曹培玲, 崔建国. 用于水中色氨酸去除的活性炭材料优选实验研究[J]. 现代化工, 2021, 41(S1): 154-158.
CAO Pei-ling, CUI Jian-guo. Experimental study on optimization of activated carbon materials for removal of tryptophan in water. Modern Chemical Industry, 2021, 41(S1): 154-158.
[1] Abbas S,Hashmi I,Rehman M S U,et al.Monitoring of chlorination disinfection by-products and their associated health risks in drinking water of Pakistan[J].Journal of Water and Health,2015,13(1):270-284. [2] Oktar B.THM formation and removal with disinfection in drinking water[J].The Turkish Journal of Occupational/Environmental Medicine and Safety,2017,1(3):47-53. [3] 丁春生,李乃军,张涛,等.天冬氨酸在氯化过程中生成消毒副产物二氯乙腈的研究[J].环境科学,2016,37(5):1831-1836. [4] 鲁金凤,张勇,刘艳芳,等.含氮消毒副产物HNMs的形成与控制研究进展[J].水处理技术,2010,36(10):5-9,22. [5] 王超,胡洪营,王丽莎,等.典型含氮有机物的氯消毒副产物生成潜能研究[J].中国给水排水,2006,22(156):9-12. [6] 翟培露.色氨酸氯化及氯胺化消毒副产物的研究[D].郑州:郑州大学,2020. [7] 李栗莹.活性炭吸附技术在水处理中的应用[J].化工管理,2020,(23):116-117. [8] 王伟.活性炭对水中有机物去除的研究[J].能源技术与管理,2017,42(5):151-152. [9] Liu J L,Li X Y,Xie Y F,et al.Removal of soluble microbial products as the precursors of disinfection by-products in drinking water supplies[J].Environmental Technology,2015,36(5-8):722-731. [10] 王世忠.活性炭与膜技术对水中天然有机物去除中试研究[D].哈尔滨:哈尔滨工业大学,2013. [11] 王爱平,刘中华.活性炭水处理技术及在中国的应用前景[J].昆明理工大学学报(理工版),2002,27(6):48-51. [12] 徐丽军.活性炭对水中有机物去除的研究进展[J].广州化工,2015,43(4):42-44. [13] 宋建刚,岳东北,聂永丰.硝酸改性活性炭对渗滤液中小分子有机物的吸附性能[J].环境化学,2009,28(6):788-792. [14] 段蕾,吕炳南,李伟光.温度对生物活性炭处理效果影响的试验研究[J].哈尔滨商业大学学报(自然科学版),2008,24(2):151-155.