改性玉米芯及其对废水中Cr6+的吸附研究

doi:10.3976/j.issn.1002-4026.2020.03.019

Abstract

Abstract: Corncob was selected as an adsorbent to study its adsorption of Cr⁶⁺ in wastewater. Corncob was modified due to its poor adsorption effect. Subsequent to being modified with H₃PO₄, NaOH, and NaNO₂ solutions, corncob had expanded pores and increased specific surface area so that it could efficiently eliminate Cr⁶⁺ in wastewater. The experimental results show that when the initial concentration of Cr⁶⁺ in the simulated wastewater is 20 mg/L and its volume is 50.00 mL, modified corncob dosage of 0.040 g, pH of 5.00, and adsorption time of 20 min, corncob modified using NaOH solution exhibit best adsorption effect. The highest Cr⁶⁺removal in wastewater is 96.83%. At this time, the Cr⁶⁺ adsorption process by modified corncobs is fairly consistent with the Freundlich adsorption isotherm model and the pseudo-second-order kinetic model.

Key words: modified corncob, adsorption, Cr⁶⁺, orthogonal experiment, adsorption isotherm

CLC Number:

X756

LI Hong-cui, GUO An-qi, LI Yu-rong. Modified corncob and its adsorption of Cr⁶⁺ in wastewater[J].Shandong Science, 2020, 33(3): 133-140.

References 21

1	刘晓青, 曹卫红, 周卫红, 等. 农田土壤重金属污染的生物修复技术研究现状、问题及展望[J]. 天津农业科学, 2018, 24(2): 80-85. doi: 10.3969/j.issn.1006-6500.2018.02.020
2	张帆, 李菁, 谭建华, 等. 吸附法处理重金属废水的研究进展[J]. 化工进展, 2013, 32(11): 2749-2756. doi: 10.3969/j.issn.1000-6613.2013.11.038
3	蓝磊, 童张法, 李仲民, 等. 改性膨润土对废水中六价铬的吸附过程研究[J]. 环境污染与防治, 2005, 27(5): 352-354. doi: 10.3969/j.issn.1001-3865.2005.05.011
4	谢华林. 二苯碳酰二肼吸光光度法测定水中铬(Ⅵ)[J]. 理化检验-化学分册, 2003, 39(6):362, 364. doi: 10.3321/j.issn:1001-4020.2003.06.020
5	李琛, 葛红光, 宋凤敏, 等. 改性玉米芯吸附柱处理含Cr6+废水的试验研究[J]. 水处理技术, 2013, 39(10): 23-26. doi: 10.3969/j.issn.1000-3770.2013.10.005
6	张庆芳, 杨国栋, 孔秀琴, 等. 改性玉米芯吸附水中Cr6+的研究[J]. 广东化工, 2009, 36(4): 122-123, 147. doi: 10.3969/j.issn.1007-1865.2009.04.036
7	袁渊, 张雪嶕, 闫明明, 等. 改性炭化玉米芯对甲醛的吸附性能研究[J]. 环境工程, 2017, 35(3): 118-122. doi: 10.13205/j.hjgc.201703025
8	尚娜, 范顺利, 胡蓓蓓, 等. 磷酸改性玉米芯吸附剂对水中亚甲基蓝的吸附研究[J]. 河南师范大学学报(自然科学版), 2015, 43(6): 59-64. doi: 10.16366/j.cnki.1000-2367.2015.06.011
9	高佩. 玉米芯活性炭的制备及对水中Cr(Ⅵ)与苯胺的去除[D].太原：太原理工大学,2018.
10	翟继武, 林杨, 潮洛濛, 等. 改性玉米芯的制备及其对Pb2+吸附性能研究[J]. 电镀与精饰, 2017, 39(9): 42-46. doi: 10.3969/j.issn.1001-3849.2017.09.010
11	齐敏, 谢雯雯, 赵金朋, 等. 玉米芯改性前后对水中重金属去除的研究[J]. 广东化工, 2015, 42(24): 134-135, 138. doi: 10.3969/j.issn.1007-1865.2015.24.065
12	李太行. 改性玉米芯吸附材料的研制与应用[D]. 上海: 上海海洋大学, 2015.
13	贾成友, 李微, 张传辉, 等. 基于多指标权重分析和正交设计法优选白黄泄热止痢片复方提取工艺[J]. 中草药, 2016, 47(6): 917-922. doi: 10.7501/j.issn.0253-2670.2016.06.010
14	王智, 江楠, 王应, 等. 硫酸盐对聚羧酸减水剂吸附量及吸附动力学的影响[J]. 硅酸盐学报, 2012, 40(11): 1586-1591. doi: 10.14062/j.issn.0454-5648.2012.11.010
15	王光荣, 高世霞, 于晓锋, 等. 改性玉米芯对Zn2+和Cu2+的吸附性能研究[J]. 轻工学报, 2019, 34(2): 56-62. doi: 10.3969/j.issn.2096-1553.2019.02.008
16	赵旭, 王毅力, 郭瑾珑, 等. 颗粒物微界面吸附模型的分形修正：朗格缪尔(Langmuir)、弗伦德利希(Freundlich)和表面络合模型[J]. 环境科学学报, 2005, 25(1): 52-57. doi: 10.13671/j.hjkxxb.2005.01.009
17	李金阳, 郭海燕, 沈飞, 等. 水稻秸秆及其厌氧消化残渣生物炭对Cd(Ⅱ)吸附性能研究[J]. 农业环境科学学报, 2018, 37(3): 585-591. doi: 10.11654/jaes.2017-1232
18	王旭峰, 郑立安, 刘毛, 等. 改性玉米芯生物炭对废水中铜和氨氮的吸附[J]. 工业水处理, 2017, 37(1): 37-41.
19	郝凤霞, 谢青, 夏维涛, 等. 速灭威在几种枸杞土壤中的吸附及解吸行为研究[J]. 生态环境学报, 2018, 27(1): 144-149. doi: 10.16258/j.cnki.1674-5906.2018.01.020
20	王剑峰. 不同吸附剂对Cr(Ⅵ)吸附特性的试验研究[D]. 大连: 大连理工大学, 2014.
21	薛杨, 邱素芬, 许端平, 等. 不同粒级的煤胶体对汞的吸附动力学[J]. 环境工程学报, 2017, 11(5): 3187-3194. doi: 10.12030/j.cjee.201608100

[1]	MIAO Xuzhong, LI Xiufen, GAO Yanyan, ZHANG Xue, ZHANG Xiqing, QIAO Luqin. Optimization of preparation of persimmon peel polysaccharide chromium using response surface methodology [J]. Shandong Science, 2024, 37(2): 127-134.
[2]	XIE Yi, ZHANG Jing, SUN Jinqiang, LIU Xiaochan, YI Xibin, SUN Yongxing. Molecular dynamics simulation and gas adsorption properties of CO₂/CH₄adsorbed using Mg-MOF-74 [J]. Shandong Science, 2023, 36(3): 123-134.
[3]	YIN Zi-qiang, CHENG Wei, WANG Ning, HE Chang-ping. Analysis of the influence factors of the deposition layer evenness for additive remanufacting based on robot welding [J]. Shandong Science, 2020, 33(4): 46-52.
[4]	QU Yan-ping, LI Hong-cui, HU Yong-hua. Research on the treatment of total phosphorus and chemical oxygen demand using fly ash in the initial rainwater [J]. Shandong Science, 2019, 32(4): 80-85.
[5]	TENG Dong-xiao, CHEN Wen-liang, MA Yuan, SU Ying-xue, NA Ping. Research on the improvement of hydrophilicity by expanded graphite loaded titanium dioxide [J]. Shandong Science, 2019, 32(1): 68-75.
[6]	WEN Bo-yuan, WANG Ji, CHEN Yun-lin. Density functional theory study of gas molecule adsorption mechanism in A520 system [J]. SHANDONG SCIENCE, 2018, 31(5): 24-30.
[7]	ZHENG Li-wen, ZHANG Wen, WANG Lei-lei, ZHANG Qiang, CHEN Guan-hong, WANG Jia-ning, GUO Shu-hai . Research on compound curing agent for waste drilling mud in Shengli Oilfield [J]. SHANDONG SCIENCE, 2017, 30(2): 106-109.
[8]	WANG Bing, WANG You-feng, LI Jing, WANG Yan, ZHANG Wei. Extraction process optimization of Psoraleae corylifolia L. and Salvia miltiorrhiza Bge. from Bushen Huoxue Granule by orthogonal experiment [J]. SHANDONG SCIENCE, 2016, 29(6): 45-49.
[9]	LI Wendong, GAO Qianshan,YANG Peng, YANG Bingtian,WANG Xiao. Extraction technology of ginkgolides from Ginkgo biloba leaves [J]. SHANDONG SCIENCE, 2016, 29(5): 29-35.
[10]	SUN Shiqing， SHI Jianguo， MA Yaohong， YANG Junhui. Extraction process of androsinS [J]. SHANDONG SCIENCE, 2015, 28(3): 6-10.
[11]	SUN Shi-Qing, SHI Jian-Guo, MA Yao-Hong, YANG Jun-Hui. Osthole preparation based on macroporus resin column chromatography and acidic alumina absorption [J]. SHANDONG SCIENCE, 2014, 27(4): 38-41.
[12]	WANG Hui, LIU Jian-Xia, CHENG Ping, GUO Yu-Bo, GENG Pei-Jiang, XU Xiao-Fei. A raw material decoloring technology in the production of medical anhydrous glucose [J]. J4, 2011, 24(4): 50-51.
[13]	LIU Xin, ZHANG Mian-Song, YUAN Wen-Feng, JIA Xue-Kui, ZHANG Yong-Gang, MENG Xiu-Mei, WANG Xiao-Jun, GU Ai-Rong, LIU Chang-Heng. Research on Haisongxin granules preparation process [J]. J4, 2011, 24(3): 43-46.

Modified corncob and its adsorption of Cr⁶⁺ in wastewater

PDF (PC)

Like

Knowledge

Abstract

Cite this article

share this article

References 21

Related Articles 13

Metrics

Comments

Recommended 0

Modified corncob and its adsorption of Cr6+ in wastewater

PDF (PC)

Like

Knowledge

Abstract

Cite this article

share this article

References 21

Related Articles 13

Metrics

Comments

Recommended 0

Modified corncob and its adsorption of Cr⁶⁺ in wastewater