In order to explore the removal effect of biomass charcoal on heavy metal ions, a preparation conditions of the optimal biomass carbon were obtained by response surface optimization method well using peanut shell as raw material and ZnCl2 as modifier. In addition, the effects of different single factors on the adsorption of Cr(Ⅵ)in water by peanut shell biomass carbon were studied. The results showed that the optimum preparation conditions of peanut shell biochar were as follows: ZnCl2 modifier concentration as 4 mol/L, carbon burning temperature as 500 ℃, carbon burning time as 3 h. The single factor experiment showed that the optimum reaction condition was pH=2 and dosage=50 mg. At this time, the adsorption rate can reach to 93.72%, and the higher the temperature resulted the more conducive to adsorption. The isothermal adsorption experiment conforms to the Langmuir model, which showed that the adsorption process was dominated by monolayer adsorption, which belongs to endothermic reaction. The kinetics accorded with the quasi second order equation, indicating that the adsorption process was mainly chemisorption.
DENG Tiantian
,
LI Hansheng
,
MA Pei
,
XU Mengxing
,
YE Zixin
,
ZHAI Liping
. Optimization of preparation of peanut shell biochar by response surface methodology and its adsorption of Cr(Ⅵ)in water[J]. Journal of Hebei University(Natural Science Edition), 2022
, 42(4)
: 384
-394
.
DOI: 10.3969/j.issn.1000-1565.2022.04.008
[1] 崔龙哲,李社锋.污染土壤修复技术与应用[M].北京:化学工业出版社, 2016: 38-106.
[2] 李会东,周建红,张大为,等.水体中六价铬生物吸附与解吸附条件与特性[J].湖南科技大学学报(自然科学版), 2010, 25(2): 122-124.DOI: 10.3969/j.issn.1672-9102.2010.02.030.
[3] 谢文强.六价铬对人体急性与慢性危害探究[J].资源节约与环保, 2016(7): 131-131.DOI:10.16317/j.cnki.12-1377/x.2016.07.106.
[4] NATALE F D, ERTO A, LANCIA A, et al. Equilibrium and dynamic study on hexavalent chromium adsorption onto activated carbon[J]. Journal of Hazardous Materials, 2012, 28: 47-55.
[5] 何忠明,王琼,付宏渊,等.柚子皮吸附去除水中的六价铬和砷[J].环境工程, 2016, 34(S1): 299-302.
[6] 饶潇潇,方昭,王建超,等.花生壳生物质炭的制备、表征及其吸附性能[J].环境科学与技术, 2017, 40(6): 14-18. DOI:10.3969/j.issn.1003-6504.2017.06.003.
[7] 李际会,王鹏,庄克章,等.氧化铁改性秸秆炭吸附铬(Ⅵ)性能研究[J].农业环境科学学报, 2019, 38(8): 1991-2001. DOI:10.11654/jaes.2019-0004.
[8] 韩丽.氯化锌改性小麦秸秆生物碳对Cr(Ⅵ)的吸附效果研究[D].泰安:山东农业大学, 2016.
[9] 陈静洁.二苯碳酰二肼分光光度法测定水质六价铬的方法改进[J].环境与发展, 2020, 32(5): 116, 118. DOI:10.16647/j.cnki.cn15-1369/X.2020.05.071.
[10] 孙玉寒,周飞,王钦钦,等.食用菌菌糠对重金属离子的吸附性[J].西安工程大学学报, 2011, 25(1): 51-54. DOI:10.13338/j.issn.1674-649x.2011.01.028.
[11] DAS D D, MAHAPATRA R, PRADHAN J, et al. Removal of Cr(Ⅵ)from aqueous solution using activated cow dung carbon[J]. J Colloid Interface Sci, 2000, 232(2): 235-240. DOI:10.1006/jcis.2000.7141.
[12] KUMAR A, PANDEY J, KUMAR S. Biosorptive removal of arsenite and arsenate from aqueous medium using low-cost adsorbent derived from ‘Pods of green peas’: exploration of kinetics, thermodynamics and adsorption isotherms[J]. Korean J Chem Eng, 2018, 35(2): 456-469. DOI:10.1007/s11814-017-0303-y.
[13] 潘永飞,汪伟,汪营磊,等.树脂DX吸附ADN的热力学和动力学研究[J].火炸药学报, 2018, 41(4): 382-387. DOI:10.14077/j.issn.1007-7812.2018.04.011.
[14] 韦思业.不同生物质原料和制备温度对生物质炭物理化学特征的影响[D].北京: 中国科学院大学(中国科学院广州地球化学研究所), 2017.
[15] 黄慧,郝硕硕,朱家亮,等.天然和CPB改性沸石对Hg2+的吸附特征[J].环境工程学报, 2013, 7(2): 579-584.
[16] 刘桐欣.共热解法制备ZnCl2改性生物质炭及其吸附性能[D].石家庄: 河北师范大学, 2018.
[17] 谢叔媚,张莹,徐建军,等.以橘子皮为原料制备生物质炭及其对Cr(Ⅵ)的吸附性能研究[J].湖北工程学院学报, 2017, 37(6): 5-10.
[18] 王丽敏,王红,魏薇,等.花生壳生物质炭对水中Pb(Ⅱ)的吸附[J].吉林化工学院学报, 2018, 35(11): 53-57. DOI:10.16039/j.cnki.cn22-1249.2018.11.015.
[19] 安强,乔卢阿里·科阿里,金琳,等.氯化锌改性玉米秸秆生物质炭对Cr(Ⅵ)的吸附特性研究[J].重庆大学学报, 2020, 43(10): 104-113. DOI:10.11835/j.issn.1000-582X.2019.264.
[20] 张坤.基于氮气吸附试验的黄土比表面积研究[D].兰州:兰州交通大学, 2018.
[21] 郭莎莎.茶树废弃枝条制备氮掺杂碳材料对重金属离子的吸附与检测[D].杨凌:西北农林科技大学, 2020. (
