NaOH改性玉米秸秆对海水中柴油的吸附作用
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摘要
用氢氧化钠对农业废弃物玉米秸秆进行改性来制备柴油吸附剂,通过模拟实验,考察其对在海水中的柴油的吸附能力,研究其吸附机理。实验设置NaOH质量分数、处理时间、秸秆粒度等几个秸秆改性条件,来研究改性后的秸秆的吸附性能。结果表明,在温度相同、固液比为1∶100条件下,氢氧化钠的质量分数为3%、处理时间为10 h的条件下,秸秆芯对柴油的吸附效果最好,为7. 75 g/g,比未处理之前的吸油效率3. 88 g/g,提高了99. 68%。
Corn stalk was used to adsorb diesel in seawater after being modified with NaOH. The absorption capacity and mechanism of the modified corn stalk to diesel were studied through simulation experiments. The factors such as NaOH concentration,treatment time and straw granularity on the absorption performance were tested.The results showed that,at same temperature and 1∶ 100 solid-to-liquid ratio,the absorption efficiency was the best when the mass fraction of NaOH was 3% and the treatment time was 10 h. The absorption efficiency reached7. 75 g/g,increasing 99. 68% more than that of the absorption efficiency of untreated corn stalk which was 3. 88 g/g.
Corn stalk was used to adsorb diesel in seawater after being modified with NaOH. The absorption capacity and mechanism of the modified corn stalk to diesel were studied through simulation experiments. The factors such as NaOH concentration,treatment time and straw granularity on the absorption performance were tested.The results showed that,at same temperature and 1∶ 100 solid-to-liquid ratio,the absorption efficiency was the best when the mass fraction of NaOH was 3% and the treatment time was 10 h. The absorption efficiency reached7. 75 g/g,increasing 99. 68% more than that of the absorption efficiency of untreated corn stalk which was 3. 88 g/g.
引文
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[3]冀海波.拯救海洋[M].石家庄:河北科学技术出版社,2013:149-150.
[4] LIM T T,HUANG X F. Evaluation of kapok(CeibapentandraL. Gaertn.)as a natural hollow hydrophobic oleophilic fibrous sorbent for oil spillcleanup[J]. Chemosphere,2007,66:955-963.
[5]申青峰,赵景联,鲁晓雯,等.膨胀石墨吸附剂的制备及其吸附性能研究[J].工业水处理,2010,30(8):58-59.
[6]袁宏涛,刘羽,安璐,等.改性粉煤灰吸附剂的制备及对石油烃的吸附研究[J].山东化工,2018(10):180-183.
[7]杨琦,安然,李平.碱改性煤矸石吸附剂的制备条件[J].石油化工应用,2017(7):117-119.
[8]刘畅,谢娟.水稻秸秆生物质吸附剂对油性物的吸附性能研究[J].生物化工,2018(2):30-34.
[9]彭丹,党志,郑刘春.生物改性玉米秸秆处理溢油污染水体的研究[J].农业环境科学学报,2018,37(2):309-315.
[10]朱银涛,李业东,王明玉,等.玉米秸秆碱化处理制备的生物炭吸附锌的特性研究[J].农业环境科学学报,2018,37(1):179-185.
[11]尹卓坤.改性秸秆吸附重金属离子研究进展[J].魅力中国,2016(19):116.
[12]蓝舟琳,彭丹,郭楚玲,等.绿色木霉改性玉米秸秆溢油吸附剂的制备及其性能研究[J].环境科学,2013,34(4):1605-1610.
[13]陈钰,龚正军,杨顺生,等.改性玉米秸秆吸附Cu2+的动力学和热力学[J].环境工程学报,2013,7(2):523-529.
[14]罗冬,谢翼飞,谭周亮,等. Na OH改性玉米秸秆对石油类污染物的吸附研究[J].环境科学与技术,2014,37(1):28-32.
[15]赵炜,李伟刚,刘浩淼,等.麦秆中木质素的脱除[J].化工进展,2017(36):479-481.
[16]张思文,党志,彭丹,等. H2O2/Na OH改性玉米秸秆制备石油吸附剂的实验研究[J].农业环境科学学报,2012,30(11):2 384-2 388.