Valorisation of agricultural waste derived biochars in aquaculture to remove organic micropollutants from water - experimental study and molecular dynamics simulations.
Valorisation of agricultural waste derived biochars in aquaculture to remove organic micropollutants from water - experimental study and molecular dynamics simulations.
复制标题
DOI：
10.1016/j.jenvman.2021.113717
复制
发表时间：
2021-12-15
影响因子：
8.7
通讯作者：
Werner D
中科院分区：
文献类型：
--
作者：
Mrozik W;Minofar B;Thongsamer T;Wiriyaphong N;Khawkomol S;Plaimart J;Vakros J;Karapanagioti H;Vinitnantharat S;Werner D
在这项工作中，我们通过将椰子壳、玉米芯和稻草转化为用于水产养殖水处理的生物炭来评估农业废料的价值。我们比较了生物炭从水产养殖所需的地表水中去除有机微污染物（对乙酰氨基酚、土霉素、四环素、恩诺沙星、莠去津、敌草隆和双氯芬酸）的适用性。生物炭通过三种方法制备，从廉价的滚筒窑（200°C）到生物气化热解（350-750°C）。总体而言，抗生素四环素和恩诺沙星是吸附最强的微污染物，而在 750 °C 下制备的椰壳生物炭是最好的吸附剂材料。分子动力学模拟表明，主要吸附机制是通过π-π堆积相互作用，并且对于一些微污染物存在多层吸附的可能性。我们观察到离子强度（盐度）的强烈影响，这是沿海水产养殖应用中的一个重要考虑因素。高盐度降低了抗生素土霉素、四环素和恩诺沙星的吸附，但增加了双氯芬酸、莠去津和敌草隆的吸附。我们认为转鼓窑生产的椰壳生物炭是南亚小规模沿海水产养殖生物炭应用的最实用选择。在水产养殖场进行的运河水过滤试点试验表明，在现实条件下，椰壳生物炭对微污染物的吸附可能比实验室研究中观察到的要低 10-500 倍。即便如此，沙子的生物炭改良剂增强了微污染物的保留，这可能促进随后的生物降解并改善沿海水产养殖中用于食品生产的微咸地表水的质量。对源自农业废物的生物炭（BC）进行了水处理评估。研究了四种废物、三种热解方法和七种微污染物。在 750 °C 下热解的椰子壳 BC 是最好的微污染物吸附剂。分子动力学模拟表明主要吸附机制是通过π-π堆积相互作用。 BC 改良剂在水过滤方面的优势已在现场条件下得到证实。
In this work, we evaluated the valorisation of agricultural waste materials by transforming coconut husks and shells, corncobs and rice straw into biochar for water treatment in aquaculture. We compared the biochars’ suitability for removal of organic micropollutants (acetaminophen, oxytetracycline, tetracycline, enrofloxacin, atrazine, diuron and diclofenac) from surface water needed for aquaculture. The biochars were prepared by three methods ranging from inexpensive drum kilns (200 °C) to pyrolysis with biogasfication (350–750 °C). Overall, antibiotics tetracycline and enrofloxacin were the most strongly sorbed micropollutants, and coconut husk biochar prepared at 750 °C was the best sorbent material. Molecular Dynamics simulations indicated that the major sorption mechanism is via π-π stacking interactions and there is a possibility of multilayer sorption for some of the micropollutants. We observed, a strong impact of ionic strength (salinity), which is an important consideration in coastal aquaculture applications. High salinity decreased the sorption for antibiotics oxytetracycline, tetracycline and enrofloxacin but increased diclofenac, atrazine and diuron sorption. We considered coconut husk biochar produced in drum kilns the most practical option for biochar applications in small-scale coastal aquacultures in South Asia. Pilot trials of canal water filtration at an aquaculture farm revealed that micropollutant sorption by coconut husk biochar under real-world conditions might be 10–500 times less than observed in the laboratory studies. Even so, biochar amendment of sand enhanced the micropollutant retention, which may facilitate subsequent biodegradation and improve the quality of brackish surface water used for food production in coastal aquaculture. Biochars (BCs) derived from agricultural waste were evaluated for water treatment. Four wastes, three pyrolysis methods and seven micropollutants were investigated. Coconut husk BC pyrolysed at 750 °C was the best micropollutant sorbent. Molecular dynamics simulations indicated that the major sorption mechanism is via π-π stacking interactions. BC amendment benefits in water filtration were demonstrated for field conditions.
登录
查看更多内容
影响因子：
11.4
作者：
Liu, Pei;Liu, Wu-Jun;Yu, Han-Qing
通讯作者：
Yu, Han-Qing
pH和金属离子对玉米秸秆生物炭吸附土霉素的影响
影响因子：
11.4
作者：
Jia, Mingyun;Wang, Fang;Jiang, Xin
通讯作者：
Jiang, Xin
影响因子：
2.3
作者：
Cheewaphongphan, Penwadee;Garivait, Savitri
通讯作者：
Garivait, Savitri
生物炭芳香性和氯化有机物分子结构对吸附特性的影响
影响因子：
5.8
作者：
Han, Lu;Qian, Linbo;Chen, Mengfang
通讯作者：
Chen, Mengfang
影响因子：
11.4
作者：
Jang, Hyun Min;Kan, Eunsung
通讯作者：
Kan, Eunsung