皮革科学与工程 ›› 2021, Vol. 31 ›› Issue (6): 1-7.doi: 10.19677/j.issn.1004-7964.2021.06.001

• 试验研究 •    下一篇

发光细菌法评价坯革的生态毒性

彭良琼1, 隆汶君1, 何发明1, 王睿2, 张文华1,2,*, 石碧1,2   

  1. 1.四川大学皮革化学与工程教育部重点实验室,四川 成都 610065;
    2.四川大学制革清洁技术国家工程研究中心,四川 成都 610065
  • 收稿日期:2021-07-20 出版日期:2021-12-28 上线日期:2021-11-25
  • 通讯作者: *zhangwh@scu.edu.cn
  • 作者简介:彭良琼(1993-),女,四川仁寿人,博士研究生,研究方向为生物质化学与工程,E-mail:995097453@qq.com。
  • 基金资助:
    国家自然科学基金(21776185); 国家重点研发计划(2017YFB0308503)

Evaluating Ecotoxicity of Leather by Luminescent Bacteria

PENG Liangqiong1, LONG Wenjun1, HE Faming1, WANG Rui2, ZHANG Wenhua1,2,*, SHI Bi1,2   

  1. 1. Key Laboratory of Leather Chemistry and Engineer of Ministry of Education, Sichuan University, Chengdu 610065, China;
    2. National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610065, China
  • Received:2021-07-20 Online:2021-12-28 Published:2021-11-25

摘要: 皮革产业在我国国民经济体系中占重要地位,其生产过程产生的革屑和废弃革制品也可能带来环境风险。本文首先针对皮革行业关注的六价铬、甲醛、五氯苯酚、四氯苯酚、邻苯基苯酚、以及壬基酚,研究了这些有害物质的物种敏感性。比较分析表明,发光细菌对六种物质均具有较高的毒性测试敏感度。从市场抽样四种鞣法的染整坯革,与去离子水在固/液比1∶20 g/mL、100 r/min、25 ℃浸提8 h,以明亮发光杆菌测试浸出液EC50值,发现铬鞣、有机鞣、植鞣、锆铝鞣坯革分别为21.46%、26.76%、49.50%和88.56%,表明各鞣法坯革生态毒性:铬鞣>有机鞣>植鞣>锆铝鞣,铬鞣革显示出较大的负面生态效应。本研究表明,发光细菌能够定量区分不同坯革的生态性,为坯革的综合生态性评价提供了一种方便、可行的方法。

关键词: 坯革, 有害物质, 敏感性分析, 发光细菌, 综合生态毒性

Abstract: Leather industry plays an important role in our national economy, whereas both leather shavings and discarded leather products may pose potential environmental risks. This paper studied the species sensitivity of hexavalent chromium, formaldehyde, pentachlorophenol, tetrachlorophenol, o-phenylphenol, and nonylphenol which are hazardous substances concerned by global leather industry. The comparative analysis showed that luminescent bacteria had high sensitivity to these six substances. Then four types of dyed crust leather were collected from different factories and extracted with deionized water at a solid/liquid ratio of 1∶20 g/mL, 100 rpm, and 25 ℃ for 8 h. The ecotoxicity of the leachates was tested with Photobacterium phosphoreum, and the EC50 values of the crust leather tanned by chrome, organics, vegetable tannin, and zirconium-aluminum were 21.46%, 26.76%, 49.50%, and 88.56%, respectively, indicating the ecotoxicity of crust leathers followed the sequence based on tanning agent: chrome > organics > vegetable tannin > zirconium-aluminum, chrome tanned crust leather showed a large negative ecological effect. This study showed that luminescent bacteria can distinguish the ecotoxicity of different leathers, which provides a convenient and feasible method for comprehensive ecological evaluation of leather.

Key words: leather, hazardous substances, sensitivity analysis, luminescent bacteria, ecotoxicity

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