Page 222 - 《精细化工》2020年第12期

·2584· 精细化工 FINE CHEMICALS 第 37 卷

2−
分别为 8.22 mg Cr(Ⅵ)/g 及 2.56 mg Cr(Ⅵ)/g，与 for the treatment of wastewater having low COD/SO 4 ratio[J].
BC-500 相比，SBC-500 对 Cr(Ⅵ)具有更好的去除能 Journal of Hazardous Materials, 2008, 159(2): 616-625.
[3] RONG X, XIE M, KONG L S, et al. The magnetic biochar derived
力。在 Cr(Ⅵ)初始质量浓度增加到 120 mg/L 时， from banana peels as a persulfate activator for organic contaminants
SBC-500 及 BC-500 对于 Cr(Ⅵ)去除效果趋于稳定。 degradation[J]. Chemical Engineering Journal, 2019, 372: 294-303.
[4] FARIA W M, FIGUEIREDO C C, COSER T R, et al. Is sewage
在较低的 Cr(Ⅵ)初始质量浓度下，两种生物炭
sludge biochar capable of replacing inorganic fertilizers for corn
材料均具有较高的去除率，其可能是生物炭材料表 production? Evidence from a two-year field experiment[J]. Archives
面有效活性位点较多，有利于 Cr(Ⅵ)的吸附。相较 of Agronomy and Soil Science, 2018, 64(4): 505-519.
[5] HUANG H, KUMAR B B, CHEN G H, et al. Sulfidogenic anaerobic
于 BC-500，SBC-500 具有更高的 Cr(Ⅵ)去除率，可
digestion of sulfate-laden waste activated sludge: Evaluation on
能由于 SBC-500 孔道结构增加，有凹凸不平的吸附 reactor performance and dynamics of microbial community[J].
2
空穴，其具有较大的比表面积（17.90 m /g）和总孔 Bioresource Technology, 2020, 297: 122396.
[6] LIAO G L, LIAO D X, LI Q M. Heavy metals contamination
容（0.0423 mL/g），并且 SBC-500 的晶型结构更为
characteristics in soil of different mining activity zones[J]. Transactions
丰富，存在 FeS 及某些金属氧化物。 of Nonferrous Metals Society of China, 2008, 18(1): 207-211.
与 SHAKYA 等 [31] 在 650 ℃下热解制备生物炭 [7] NIKFAR S, PARSA A, BAHALOO-HOREH N, et al. Enhanced
bioleaching of Cr and Ni from a chromium-rich electroplating sludge
研究相比，其在初始 Cr(Ⅵ)质量浓度为 50 mg/L 时， using the filtrated culture of Aspergillus niger[J]. Journal of Cleaner
去除率达到 27.28%，在初始 Cr(Ⅵ)质量浓度为 Production, 2020, 264: 121622.
100 mg/L 时，去除率为 19.8%，本研究在 500 ℃下 [8] Ministry of Ecological and Environment of the People's Republic of
China. Announcement on the publication of list of toxic and harmful
以硫酸盐还原剩余污泥制备 SBC-500，低于该研究 water pollutants (the first batch): 000014672/2019-01115[S]. Beijing:
热解温度，对能源消耗更低，且对 Cr(Ⅵ)去除率高 General Office of the Ministry of Ecology and Environment(生态环
于 SHAKYA 等 [31] 的研究结果。因此，本研究可对硫 境部办公厅), 2019.
[9] MA Y, LIU W J, ZHANG N, et al. Polyethylenimine modified
酸盐还原剩余污泥进行资源化合理处置，还可为污 biochar adsorbent for hexavalent chromium removal from the
泥基生物炭修复重金属污染水体提供新的理念与 aqueous solution[J]. Bioresource Technology, 2014, 169: 403-408.
思路。 [10] YU J D, JIANG C Y, GUAN Q Q, et al. Enhanced removal of Cr(Ⅵ)
from aqueous solution by supported ZnO nanoparticles on biochar
derived from waste water hyacinth[J]. Chemosphere, 2018, 195: 632-640.
3 结论 [11] LI Y H, CHANG F M, HUANG B, et al. Activated carbon
preparation from pyrolysis char of sewage sludge and its adsorption
（1）为实现剩余污泥合理处置，制备了以硫酸 performance for organic compounds in sewage[J]. Fuel, 2020, 266:
盐还原剩余污泥为原料的生物炭 SBC-500，其具有 117053.
[12] PINTO M, SILVA D, GOMES A, et al. Biochar from carrot residues
碱性大，灰分及产率高的特性，BET 比表面积为 chemically modified with magnesium for removing phosphorus from
2
17.90 m /g，孔容为 0.0423 mL/g，明显高于以浓缩 aqueous solution[J]. Journal of Cleaner Production, 2019, 222: 36-46.
池污泥制备生物炭 BC-500，制备的两种碳材料均以 [13] WANG G G (王格格), LI G (李刚), LU J Y (陆江银), et al.
2+
Preparation of slush-based biochar and its adsorption of Hg [J].
介孔结构为主。 Chemical Environmental Protection (化工环保), 2016, 36(3): 283-287.
（2）以 SRS 制备的 SBC-500，孔道结构明显， [14] SELVARAJ K, MANONMANI S, PATTABHI S. Removal of
生物炭内部镶嵌有不规则边缘的晶型结构；XRD 结 hexavalent chromium using distillery sludge[J]. Bioresource Technology,
2003, 89(2): 207-211.
果显示 SBC-500 具有规则的石墨烯碳、非晶型碳及 [15] American Society of Testing Materials.Standard test method for ash
FeS 晶型结构；FTIR 结果显示具有 O==S==O 的反 in analysis of petroleum coke: D4422-2003(2008)[S]. Washington D
对称伸缩振动峰。 C: ASTM, 2003.
[16] APHA.Standard methods for the examination of water and
（3）在 pH 为 3，投加量为 0.2 g，Cr(Ⅵ)初始质 wastewater[M]. 20th ed. Washington D C: American Public Health
量浓度为 10 mg/L，在吸附 48 h 后，SBC-500 对 Cr(Ⅵ) Association/American Water Works Association/Water Environment
Federation, 1998.
去除率达到 100%。当 Cr(Ⅵ)初始质量浓度增至
[17] YIN C K, SHEN Y W, YUAN R X, et al. Sludge-based
200 mg/L 时，SBC-500 对 Cr(Ⅵ)的吸附量为 8.22 mg biochar-assisted thermophilic anaerobic digestion of waste-activated
Cr(Ⅵ)/g。相较于 BC-500，SBC-500 对 Cr(Ⅵ)具有 sludge in microbial electrolysis cell for methane production[J].
Bioresource Technology, 2019, 284: 315-324.
更好的去除能力。
[18] JIANG G, RONG Z D, SUN W. Effects of metakaolin on mechanical
properties, pore structure and hydration heat of mortars at 0.17 w/b
参考文献： ratio[J]. Construction and Building Materials, 2015, 93(93): 564-572.
[1] LI W C, NIU Q G, ZHANG H, et al. UASB treatment of chemical [19] LIU J H, HUANG Z J, CHEN Z Y, et al. Resource utilization of
synthesis-based pharmaceutical wastewater containing rich organic swine sludge to prepare modified biochar adsorbent for the efficient
sulfur compounds and sulfate and associated microbial characteristics[J]. removal of Pb(Ⅱ) from water[J]. Journal of Cleaner Production,
Chemical Engineering Journal, 2015, 260: 55-63. 2020, 257: 120322.
[2] SABUMON P C. Development of enhanced sulphidogenesis process （下转第 2592 页）