化工进展 ›› 2019, Vol. 38 ›› Issue (12): 5578-5586.DOI: 10.16085/j.issn.1000-6613.2019-0450
刘德钱1(),解强1(),万超然1,邓锋1,2,黄小晴1,翟笑迪1
收稿日期:
2019-03-26
出版日期:
2019-12-05
发布日期:
2019-12-05
通讯作者:
解强
作者简介:
刘德钱(1991—),男,博士研究生,研究方向为活性炭制备及应用。E-mail:基金资助:
Deqian LIU1(),Qiang XIE1(),Chaoran WAN1,Feng DENG1,2,Xiaoqing HUANG1,ZHAI Xiaodi1
Received:
2019-03-26
Online:
2019-12-05
Published:
2019-12-05
Contact:
Qiang XIE
摘要:
采制11种典型水处理用商品活性炭样品,两两混合进行配炭,对配炭组分及配炭的碘值、亚甲蓝值、丹宁酸值和焦糖脱色率等吸附性能指标及孔结构特征进行了测试和表征。采用加权平均拟合、线性拟合及多项式拟合等方法,研究配炭吸附性能指标与配炭组分吸附性能指标间的量化关系,关联活性炭孔结构与吸附性能指标。结果表明:活性炭配炭的吸附性能指标可由配炭组分的吸附性能指标通过加权平均计算,相对误差<4%,且配炭的孔结构也具备加和性;活性炭碘值、亚甲蓝值、丹宁酸值和焦糖脱色率的大小分别取决于活性炭1.0~2.8nm、1.5~10nm、2.0~50nm和3.0~50nm孔隙的发达程度,与孔容积的线性相关系数介于0.91~0.94。
中图分类号:
刘德钱,解强,万超然,邓锋,黄小晴,翟笑迪. 活性炭配炭的吸附性能及其与孔结构的关系[J]. 化工进展, 2019, 38(12): 5578-5586.
Deqian LIU,Qiang XIE,Chaoran WAN,Feng DENG,Xiaoqing HUANG,ZHAI Xiaodi. Adsorption properties of blending activated carbons and their relationship with pore structure[J]. Chemical Industry and Engineering Progress, 2019, 38(12): 5578-5586.
编号 | M ad/% | A d/% | V daf/% | FCdaf/% |
---|---|---|---|---|
DT-830-BCT | 1.15 | 10.16 | 2.42 | 97.58 |
DT-830-DCT-1 | 0.53 | 13.40 | 1.48 | 98.52 |
DT-830-DCT-2 | 0.61 | 20.85 | 1.93 | 98.07 |
TX-830-ECT | 6.86 | 10.82 | 3.39 | 96.61 |
XJ-830-BCT | 1.29 | 7.29 | 2.00 | 98.00 |
XJ-830-DCT | 1.71 | 8.14 | 2.58 | 97.42 |
DT-830-DCT-3 | 0.75 | 18.53 | 1.93 | 98.07 |
DT-1240-BCT-1 | 2.81 | 8.84 | 2.64 | 97.36 |
DT-1240-DCT-1 | 3.49 | 14.02 | 2.58 | 97.42 |
DT-1240-DCT-2 | 0.95 | 20.17 | 2.28 | 97.72 |
DT-1240-BCT-2 | 4.09 | 13.70 | 2.96 | 97.04 |
表1 配炭组分的工业分析(质量分数)
编号 | M ad/% | A d/% | V daf/% | FCdaf/% |
---|---|---|---|---|
DT-830-BCT | 1.15 | 10.16 | 2.42 | 97.58 |
DT-830-DCT-1 | 0.53 | 13.40 | 1.48 | 98.52 |
DT-830-DCT-2 | 0.61 | 20.85 | 1.93 | 98.07 |
TX-830-ECT | 6.86 | 10.82 | 3.39 | 96.61 |
XJ-830-BCT | 1.29 | 7.29 | 2.00 | 98.00 |
XJ-830-DCT | 1.71 | 8.14 | 2.58 | 97.42 |
DT-830-DCT-3 | 0.75 | 18.53 | 1.93 | 98.07 |
DT-1240-BCT-1 | 2.81 | 8.84 | 2.64 | 97.36 |
DT-1240-DCT-1 | 3.49 | 14.02 | 2.58 | 97.42 |
DT-1240-DCT-2 | 0.95 | 20.17 | 2.28 | 97.72 |
DT-1240-BCT-2 | 4.09 | 13.70 | 2.96 | 97.04 |
编号 | 活性炭组成 | 质量比 | |
---|---|---|---|
AS-1 | DT-830-BCT | XJ-830-BCT | 7∶3 |
AS-2 | DT-830-BCT | XJ-830-BQ | 5∶5 |
AS-3 | DT-830-BCT | XJ-830-BCT | 3∶7 |
AS-4 | DT-830-BCT | DT-830-DCT-1 | 3∶7 |
AS-5 | DT-830-DCT-1 | DT-830-DCT-3 | 7∶3 |
AS-6 | DT-830-DCT-2 | XJ-830-DCT | 5∶5 |
AS-7 | DT-1240-BCT-1 | DT-1240-DCT-1 | 3∶7 |
AS-8 | DT-1240-BCT-1 | DT-1240-BCT-2 | 5∶5 |
表2 配炭孔结构表征用分析样及组成
编号 | 活性炭组成 | 质量比 | |
---|---|---|---|
AS-1 | DT-830-BCT | XJ-830-BCT | 7∶3 |
AS-2 | DT-830-BCT | XJ-830-BQ | 5∶5 |
AS-3 | DT-830-BCT | XJ-830-BCT | 3∶7 |
AS-4 | DT-830-BCT | DT-830-DCT-1 | 3∶7 |
AS-5 | DT-830-DCT-1 | DT-830-DCT-3 | 7∶3 |
AS-6 | DT-830-DCT-2 | XJ-830-DCT | 5∶5 |
AS-7 | DT-1240-BCT-1 | DT-1240-DCT-1 | 3∶7 |
AS-8 | DT-1240-BCT-1 | DT-1240-BCT-2 | 5∶5 |
吸附性能指标 | b 0 | b 1 | b 2 | R 2 |
---|---|---|---|---|
碘值 | 43.701 | 0.953 | 0.955 | 0.992 |
亚甲蓝值 | 0.0375 | 0.988 | 0.998 | 0.992 |
丹宁酸值 | -0.471 | 0.995 | 1.048 | 0.998 |
焦糖脱色率 | -0.0358 | 1.058 | 1.072 | 0.979 |
表3 吸附性能指标的线性拟合结果
吸附性能指标 | b 0 | b 1 | b 2 | R 2 |
---|---|---|---|---|
碘值 | 43.701 | 0.953 | 0.955 | 0.992 |
亚甲蓝值 | 0.0375 | 0.988 | 0.998 | 0.992 |
丹宁酸值 | -0.471 | 0.995 | 1.048 | 0.998 |
焦糖脱色率 | -0.0358 | 1.058 | 1.072 | 0.979 |
吸附性能指标 | b 11 | b 22 | b 12 | b 10 | b 20 | b 00 | R 2 |
---|---|---|---|---|---|---|---|
碘值 | 3.287×10-5 | 2.639×10-5 | 5.590×10-5 | 0.895 | 0.903 | 70.001 | 0.992 |
亚甲蓝值 | -0.0011 | -0.0010 | -0.0023 | 1.407 | 1.395 | -37.326 | 0.992 |
丹宁酸值 | 0.0018 | -9.140×10-6 | 0.0015 | 0.932 | 1.038 | -0.138 | 0.997 |
焦糖脱色率 | -0.0109 | 0.132 | -0.0512 | 1.069 | 0.996 | -0.0267 | 0.979 |
表4 吸附性能指标的多项式拟合结果
吸附性能指标 | b 11 | b 22 | b 12 | b 10 | b 20 | b 00 | R 2 |
---|---|---|---|---|---|---|---|
碘值 | 3.287×10-5 | 2.639×10-5 | 5.590×10-5 | 0.895 | 0.903 | 70.001 | 0.992 |
亚甲蓝值 | -0.0011 | -0.0010 | -0.0023 | 1.407 | 1.395 | -37.326 | 0.992 |
丹宁酸值 | 0.0018 | -9.140×10-6 | 0.0015 | 0.932 | 1.038 | -0.138 | 0.997 |
焦糖脱色率 | -0.0109 | 0.132 | -0.0512 | 1.069 | 0.996 | -0.0267 | 0.979 |
吸附性能指标 | 拟合方法 | ||
---|---|---|---|
加权平均 | 线性 | 多项式 | |
碘值 | 0.34 | 0.29 | 0.29 |
亚甲蓝值 | 0.89 | 0.67 | 0.61 |
丹宁酸值 | 3.09 | 3.09 | 2.87 |
焦糖脱色率 | 4.01 | 3.14 | 3.11 |
表5 吸附性能指标拟合值与实验值间的平均相对误差 单位:%
吸附性能指标 | 拟合方法 | ||
---|---|---|---|
加权平均 | 线性 | 多项式 | |
碘值 | 0.34 | 0.29 | 0.29 |
亚甲蓝值 | 0.89 | 0.67 | 0.61 |
丹宁酸值 | 3.09 | 3.09 | 2.87 |
焦糖脱色率 | 4.01 | 3.14 | 3.11 |
编号 | V t/cm3·g-1 | S BET/m2·g-1 | V mic/cm3·g-1 | V mes/cm3·g-1 | V mes /V t | d a /nm |
---|---|---|---|---|---|---|
DT-830-BCT | 0.596 | 1064 | 0.377 | 0.172 | 0.29 | 2.24 |
DT-830-DCT-1 | 0.465 | 919 | 0.375 | 0.073 | 0.16 | 2.02 |
DT-830-DCT-2 | 0.522 | 952 | 0.364 | 0.103 | 0.20 | 2.19 |
TX-830-ECT | 0.533 | 994 | 0.371 | 0.101 | 0.19 | 2.15 |
XJ-830-BCT | 0.437 | 929 | 0.325 | 0.057 | 0.13 | 1.88 |
XJ-830-DCT | 0.508 | 994 | 0.371 | 0.092 | 0.18 | 2.04 |
DT-830-DCT-3 | 0.577 | 1090 | 0.435 | 0.096 | 0.17 | 2.12 |
DT-1240-BCT-1 | 0.524 | 1028 | 0.366 | 0.112 | 0.21 | 2.04 |
DT-1240-DCT-1 | 0.451 | 898 | 0.367 | 0.068 | 0.15 | 2.01 |
DT-1240-DCT-2 | 0.509 | 923 | 0.377 | 0.106 | 0.21 | 2.21 |
DT-1240-BCT-2 | 0.641 | 939 | 0.371 | 0.266 | 0.41 | 2.73 |
表6 配炭组分的孔结构参数
编号 | V t/cm3·g-1 | S BET/m2·g-1 | V mic/cm3·g-1 | V mes/cm3·g-1 | V mes /V t | d a /nm |
---|---|---|---|---|---|---|
DT-830-BCT | 0.596 | 1064 | 0.377 | 0.172 | 0.29 | 2.24 |
DT-830-DCT-1 | 0.465 | 919 | 0.375 | 0.073 | 0.16 | 2.02 |
DT-830-DCT-2 | 0.522 | 952 | 0.364 | 0.103 | 0.20 | 2.19 |
TX-830-ECT | 0.533 | 994 | 0.371 | 0.101 | 0.19 | 2.15 |
XJ-830-BCT | 0.437 | 929 | 0.325 | 0.057 | 0.13 | 1.88 |
XJ-830-DCT | 0.508 | 994 | 0.371 | 0.092 | 0.18 | 2.04 |
DT-830-DCT-3 | 0.577 | 1090 | 0.435 | 0.096 | 0.17 | 2.12 |
DT-1240-BCT-1 | 0.524 | 1028 | 0.366 | 0.112 | 0.21 | 2.04 |
DT-1240-DCT-1 | 0.451 | 898 | 0.367 | 0.068 | 0.15 | 2.01 |
DT-1240-DCT-2 | 0.509 | 923 | 0.377 | 0.106 | 0.21 | 2.21 |
DT-1240-BCT-2 | 0.641 | 939 | 0.371 | 0.266 | 0.41 | 2.73 |
编号 | V t /cm3·g-1 | S BET/m2·g-1 | V mic/cm3·g-1 | V mes/cm3·g-1 | V mes /V t | d a /nm |
---|---|---|---|---|---|---|
AS-1 | 0.529 | 1035 | 0.381 | 0.129 | 0.24 | 2.05 |
AS-2 | 0.495 | 1021 | 0.375 | 0.108 | 0.22 | 1.94 |
AS-3 | 0.454 | 979 | 0.362 | 0.087 | 0.19 | 1.85 |
AS-4 | 0.517 | 993 | 0.385 | 0.102 | 0.20 | 2.08 |
AS-5 | 0.471 | 969 | 0.374 | 0.075 | 0.16 | 1.95 |
AS-6 | 0.542 | 991 | 0.384 | 0.093 | 0.17 | 2.11 |
AS-7 | 0.449 | 930 | 0.364 | 0.078 | 0.17 | 1.93 |
AS-8 | 0.549 | 988 | 0.359 | 0.179 | 0.33 | 2.22 |
表7 活性炭配炭孔结构参数
编号 | V t /cm3·g-1 | S BET/m2·g-1 | V mic/cm3·g-1 | V mes/cm3·g-1 | V mes /V t | d a /nm |
---|---|---|---|---|---|---|
AS-1 | 0.529 | 1035 | 0.381 | 0.129 | 0.24 | 2.05 |
AS-2 | 0.495 | 1021 | 0.375 | 0.108 | 0.22 | 1.94 |
AS-3 | 0.454 | 979 | 0.362 | 0.087 | 0.19 | 1.85 |
AS-4 | 0.517 | 993 | 0.385 | 0.102 | 0.20 | 2.08 |
AS-5 | 0.471 | 969 | 0.374 | 0.075 | 0.16 | 1.95 |
AS-6 | 0.542 | 991 | 0.384 | 0.093 | 0.17 | 2.11 |
AS-7 | 0.449 | 930 | 0.364 | 0.078 | 0.17 | 1.93 |
AS-8 | 0.549 | 988 | 0.359 | 0.179 | 0.33 | 2.22 |
吸附性能指标 | AS-1 | AS-2 | AS-3 | AS-4 | AS-5 | AS-6 | AS-7 | AS-8 | |
---|---|---|---|---|---|---|---|---|---|
V t | |||||||||
拟合值/cm3?g-1 | 0.548 | 0.516 | 0.485 | 0.504 | 0.499 | 0.515 | 0.473 | 0.583 | |
相对误差/% | 3.59 | 4.24 | 6.83 | 2.51 | 5.94 | 4.98 | 5.34 | 6.19 | |
V mes | |||||||||
拟合值/cm3?g-1 | 0.137 | 0.114 | 0.092 | 0.103 | 0.079 | 0.097 | 0.081 | 0.189 | |
相对误差/% | 6.21 | 5.56 | 5.75 | 0.98 | 5.33 | 4.31 | 3.85 | 5.59 | |
V mic | |||||||||
拟合值/cm3?g-1 | 0.361 | 0.351 | 0.341 | 0.376 | 0.393 | 0.368 | 0.367 | 0.369 | |
相对误差/% | 5.25 | 6.40 | 5.80 | 2.34 | 5.08 | 4.17 | 0.82 | 2.79 | |
S BET | |||||||||
拟合值/m2?g-1 | 1024 | 997 | 970 | 963 | 971 | 973 | 937 | 983 | |
相对误差/% | 1.09 | 2.38 | 0.98 | 3.02 | 0.21 | 1.79 | 0.73 | 0.48 |
表8 活性炭配炭孔结构参数加权平均拟合值
吸附性能指标 | AS-1 | AS-2 | AS-3 | AS-4 | AS-5 | AS-6 | AS-7 | AS-8 | |
---|---|---|---|---|---|---|---|---|---|
V t | |||||||||
拟合值/cm3?g-1 | 0.548 | 0.516 | 0.485 | 0.504 | 0.499 | 0.515 | 0.473 | 0.583 | |
相对误差/% | 3.59 | 4.24 | 6.83 | 2.51 | 5.94 | 4.98 | 5.34 | 6.19 | |
V mes | |||||||||
拟合值/cm3?g-1 | 0.137 | 0.114 | 0.092 | 0.103 | 0.079 | 0.097 | 0.081 | 0.189 | |
相对误差/% | 6.21 | 5.56 | 5.75 | 0.98 | 5.33 | 4.31 | 3.85 | 5.59 | |
V mic | |||||||||
拟合值/cm3?g-1 | 0.361 | 0.351 | 0.341 | 0.376 | 0.393 | 0.368 | 0.367 | 0.369 | |
相对误差/% | 5.25 | 6.40 | 5.80 | 2.34 | 5.08 | 4.17 | 0.82 | 2.79 | |
S BET | |||||||||
拟合值/m2?g-1 | 1024 | 997 | 970 | 963 | 971 | 973 | 937 | 983 | |
相对误差/% | 1.09 | 2.38 | 0.98 | 3.02 | 0.21 | 1.79 | 0.73 | 0.48 |
吸附性能指标 | S BET | V t | V mic | V mes | d a |
---|---|---|---|---|---|
碘值 | 0.68 | 0.06 | 0.04 | 0.00 | 0.06 |
亚甲蓝值 | 0.09 | 0.37 | 0.37 | 0.16 | 0.27 |
丹宁酸值 | 0.00 | 0.66 | 0.01 | 0.91 | 0.94 |
焦糖脱色率 | 0.09 | 0.82 | 0.14 | 0.79 | 0.80 |
表9 活性炭孔结构参数与吸附性能指标间的线性相关系数
吸附性能指标 | S BET | V t | V mic | V mes | d a |
---|---|---|---|---|---|
碘值 | 0.68 | 0.06 | 0.04 | 0.00 | 0.06 |
亚甲蓝值 | 0.09 | 0.37 | 0.37 | 0.16 | 0.27 |
丹宁酸值 | 0.00 | 0.66 | 0.01 | 0.91 | 0.94 |
焦糖脱色率 | 0.09 | 0.82 | 0.14 | 0.79 | 0.80 |
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