氢氧化钠改性生物炭/凹凸棒石复合材料对铅、镉的吸附机理研究

doi:10.19741/j.issn.1673-4831.2022.0851

Abstract

Abstract: A novel rice straw biochar/ attapulgite composite (BA) was prepared by pyrolysis under anoxic conditions with rice straw and attapulgite, which was modified with sodium hydroxide to improve its adsorption performance. Batch adsorption experiments, including adsorption kinetics, isothermal adsorption and change of initial pH, were conducted to investigate the adsorption behavior of composite materials in single and binary pollution systems of Cd and Pb. SEM-EDS, BET, FTIR, XRD, and XPS were used to analyze the adsorption mechanisms of modified composites of Cd and Pb. The results show that the adsorption capacity of sodium hydroxide modified composite (NBA) for Cd²⁺ and Pb²⁺ was 117.05 and 274.65 mg·g^-1, respectively, and the removal efficiency of NBA was increased by 31.2% and 51.7%, respectively, compared with BA. In the binary metal system, the adsorption capacity of NBA was also significantly better than that of BA. The pseudo-second-order kinetics model and the Langmuir isotherm model could describe the Cd²⁺ and Pb²⁺ adsorption processes of the composites better, which proves that the adsorption is mainly a single molecule chemical adsorption process. In addition, competitive adsorption analysis showed that Pb²⁺ was more easily adsorbed by composite materials than Cd²⁺ in coexisting solutions. The characterization method determined the adsorption mechanism of NBA for Cd²⁺ and Pb²⁺, mainly including the complexation with surface functional groups, precipitation with minerals and π-electron interaction. In conclusion, NBA is a highly potential adsorption material for the treatment of heavy metal pollution in wastewater.

Key words: biochar, attapulgite, heavy metal, modification, mechanism

CLC Number:

GUO Miao, LI Bei-bei, XU Lin-yue, ZHANG Ya-ping, HE Yue. Study on the Adsorption Mechanism of Sodium Hydroxide Modified Biochar/Attapulgite Composites for Lead and Cadmium[J]. Journal of Ecology and Rural Environment, 2024, 40(1): 119-129.

References

[1] CHEN T,ZHOU Z Y,HAN R,et al.Adsorption of Cadmium by Biochar Derived from Municipal Sewage Sludge:Impact Factors and Adsorption Mechanism[J].Chemosphere,2015,134:286-293.
[2] UDDIN M K.A Review on the Adsorption of Heavy Metals by Clay Minerals,with Special Focus on the Past Decade[J].Chemical Engineering Journal,2017,308:438-462.
[3] WU J W,WANG T,WANG J W,et al.A Novel Modified Method for the Efficient Removal of Pb and Cd from Wastewater by Biochar:Enhanced the Ion Exchange and Precipitation Capacity[J].Science of the Total Environment,2021,754:142150.
[4] MACCHI G,MARANI D,PAGANO M,et al.A Bench Study on Lead Removal from Battery Manufacturing Wastewater by Carbonate Precipitation[J].Water Research,1996,30(12):3032-3036.
[5] NEKOUEI R K,PAHLEVANI F,ASSEFI M,et al.Selective Isolation of Heavy Metals from Spent Electronic Waste Solution by Macroporous Ion-exchange Resins[J].Journal of Hazardous Materials,2019,371:389-396.
[6] HEBBAR R S,ISLOOR A M,ANANDA K,et al.Fabrication of Polydopamine Functionalized Halloysite Nanotube/ Polyetherimide Membranes for Heavy Metal Removal[J].Journal of Materials Chemistry A,2016,4(3):764-774.
[7] WANG X D,XU J,LIU J,et al.Mechanism of Cr(Ⅵ) Removal by Magnetic Greigite/ Biochar Composites[J].Science of the Total Environment,2020,700:134414.
[8] AL-SHANNAG M,AL-QODAH Z,BANI-MELHEM K,et al.Heavy Metal Ions Removal from Metal Plating Wastewater Using Electrocoagulation:Kinetic Study and Process Performance[J].Chemical Engineering Journal,2015,260:749-756.
[9] KARTHIK R,MEENAKSHI S.Removal of Pb(Ⅱ) and Cd(Ⅱ) Ions from Aqueous Solution Using Polyaniline Grafted Chitosan[J].Chemical Engineering Journal,2015,263:168-177.
[10] WEI Z H,XING R E,ZHANG X,et al.Facile Template-free Fabrication of Hollow Nestlike α-Fe₂O₃ Nanostructures for Water Treatment[J].ACS Applied Materials & Interfaces,2013,5(3):598-604.
[11] AIN Q U,ZHANG H B,YASEEN M,et al.Facile Fabrication of Hydroxyapatite-magnetite-bentonite Composite for Efficient Adsorption of Pb(Ⅱ),Cd(Ⅱ),and Crystal Violet from Aqueous Solution[J].Journal of Cleaner Production,2020,247:119088.
[12] 任洁青,王朝旭,张峰,等.改性稻壳生物炭对水中Cd²⁺的吸附性能研究[J].生态与农村环境学报,2021,37(1):73-79.[REN Jie-qing,WANG Chao-xu,ZHANG Feng,et al.Adsorption of Cd²⁺ from Aqueous Solution by Modified Rice Husk-derived Biochars［J].Journal of Ecology and Rural Environment,2021,37(1):73-79.］
[13] LYU H H,TANG J C,HUANG Y,et al.Removal of Hexavalent Chromium from Aqueous Solutions by a Novel Biochar Supported Nanoscale Iron Sulfide Composite[J].Chemical Engineering Journal,2017,322:516-524.
[14] 杨雅芃,张超兰,陈俊先,等.KOH活化制备蚕沙基生物炭及其对镉的吸附特性[J].环境工程学报,2021,15(11):3504-3514.[YANG Ya-peng,ZHANG Chao-lan,CHEN Jun-xian,et al.Study on Adsorption and Removal of Cadmium by KOH Activated Silkworm Excrement-based Biochar［J].Chinese Journal of Environmental Engineering,2021,15(11):3504-3514.］
[15] WANG X H,GU Y L,TAN X F,et al.Functionalized Biochar/Clay Composites for Reducing the Bioavailable Fraction of Arsenic and Cadmium in River Sediment[J].Environmental Toxicology and Chemistry,2019,38(10):2337-2347.
[16] HUANG J H,LIU Y F,JIN Q Z,et al.Adsorption Studies of a Water Soluble Dye,Reactive Red MF-3B,Using Sonication-surfactant-modified Attapulgite Clay[J].Journal of Hazardous Materials,2007,143(1/2):541-548.
[17] 于志新,逯子扬,赵晓红,等.凹凸棒土改性及其在环境水处理中的应用研究[J].硅酸盐通报,2010,29(6):1367-1372.[YU Zhi-xin,LU Zi-yang,ZHAO Xiao-hong,et al.Attapulgite Modification and Its Application in Environmental Water Treatment［J].Bulletin of the Chinese Ceramic Society,2010,29(6):1367-1372.］
[18] 许端平,姜紫微,张朕.磁性生物炭对铅和镉离子的竞争吸附动力学[J].安徽农业科学,2020,48(22):67-72.[XU Duan-ping,JIANG Zi-wei,ZHANG Zhen.Competitive Adsorption Kinetics of Lead and Cadmium Ions on Magnetic Biochar［J].Journal of Anhui Agricultural Sciences,2020,48(22):67-72.］
[19] PARK J H,OK Y S,KIM S H,et al.Competitive Adsorption of Heavy Metals onto Sesame Straw Biochar in Aqueous Solutions[J].Chemosphere,2016,142:77-83.
[20] LI K,WANG Y W,HUANG M,et al.Preparation of Chitosan-graft-polyacrylamide Magnetic Composite Microspheres for Enhanced Selective Removal of Mercury Ions from Water[J].Journal of Colloid and Interface Science,2015,455:261-270.
[21] DENG Y Y,HUANG S,DONG C Q,et al.Competitive Adsorption Behaviour and Mechanisms of Cadmium,Nickel and Ammonium from Aqueous Solution by Fresh and Ageing Rice Straw Biochars[J].Bioresource Technology,2020,303:122853.
[22] AYTAS S,YURTLU M,DONAT R.Adsorption Characteristic of U(Ⅵ) Ion onto Thermally Activated Bentonite[J].Journal of Hazardous Materials,2009,172(2/3):667-674.
[23] XIAO F F,CHENG J H,CAO W,et al.Removal of Heavy Metals from Aqueous Solution Using Chitosan-combined Magnetic Biochars[J].Journal of Colloid and Interface Science,2019,540:579-584.
[24] PELLERA F M,GIANNIS A,KALDERIS D,et al.Adsorption of Cu(Ⅱ) Ions from Aqueous Solutions on Biochars Prepared from Agricultural By-products[J].Journal of Environmental Management,2012,96(1):35-42.
[25] LU H L,ZHANG W H,YANG Y X,et al.Relative Distribution of Pb²⁺ Sorption Mechanisms by Sludge-derived Biochar[J].Water Research,2012,46(3):854-862.
[26] LIU Y Y,WANG L,WANG X Y,et al.Oxidative Ageing of Biochar and Hydrochar Alleviating Competitive Sorption of Cd(Ⅱ) and Cu(Ⅱ)[J].Science of the Total Environment,2020,725:138419.
[27] PENG H B,GAO P,CHU G,et al.Enhanced Adsorption of Cu(Ⅱ) and Cd(Ⅱ) by Phosphoric Acid-modified Biochars[J].Environmental Pollution,2017,229:846-853.
[28] 郭丹丹.生物炭和改性生物炭对重金属Pb(Ⅱ)、Cd(Ⅱ)的吸附性能研究[D].西安:西安科技大学,2020.[GUO Dan-dan.Research on the Adsorption Performance of Heavy Metals Pb(Ⅱ) and Cd(Ⅱ) by Biochar and Modified Biochar［D].Xi'an:Xi'an University of Science and Technology,2020.］
[29] LI B,YANG L,WANG C Q,et al.Adsorption of Cd(Ⅱ) from Aqueous Solutions by Rape Straw Biochar Derived from Different Modification Processes[J].Chemosphere,2017,175:332-340.
[30] 吴诗雪,王欣,陈灿,等.凤眼莲、稻草和污泥制备生物炭的特性表征与环境影响解析[J].环境科学学报,2015,35(12):4021-4032.[WU Shi-xue,WANG Xin,CHEN Can,et al.Characterization of Biochar Derived from Water Hyacinth,Rice Straw and Sewage Sludge and Their Environmental Implications［J].Acta Scientiae Circumstantiae,2015,35(12):4021-4032.］
[31] CHEN B L,ZHOU D D,ZHU L Z.Transitional Adsorption and Partition of Nonpolar and Polar Aromatic Contaminants by Biochars of Pine Needles with Different Pyrolytic Temperatures[J].Environmental Science & Technology,2008,42(14):5137-5143.
[32] ÖZÇIMEN D,KARAOSMANOǦLU F.Production and Characterization of Bio-oil and Biochar from Rapeseed Cake[J].Renewable Energy,2004,29(5):779-787.
[33] PUREVSUREN B,AVID B,TESCHE B,et al.A Biochar from Casein and Its Properties[J].Journal of Materials Science,2003,38(11):2347-2351.
[34] CAO X D,MA L N,GAO B,et al.Dairy-manure Derived Biochar Effectively Sorbs Lead and Atrazine[J].Environmental Science & Technology,2009,43(9):3285-3291.
[35] YIN G C,SONG X W,TAO L,et al.Novel Fe-Mn Binary Oxide-biochar as an Adsorbent for Removing Cd(Ⅱ) from Aqueous Solutions[J].Chemical Engineering Journal,2020,389:124465.
[36] WANG R Z,HUANG D L,LIU Y G,et al.Investigating the Adsorption Behavior and the Relative Distribution of Cd²⁺ Sorption Mechanisms on Biochars by Different Feedstock[J].Bioresource Technology,2018,261:265-271.
[37] AN Q,JIANG Y Q,NAN H Y,et al.Unraveling Sorption of Nickel from Aqueous Solution by KMnO₄ and KOH-modified Peanut Shell Biochar:Implicit Mechanism[J].Chemosphere,2019,214:846-854.
[38] CAI T,DU H H,LIU X L,et al.Insights into the Removal of Cd and Pb from Aqueous Solutions by NaOH-EtOH-modified Biochar[J].Environmental Technology & Innovation,2021,24:102031.

Study on the Adsorption Mechanism of Sodium Hydroxide Modified Biochar/Attapulgite Composites for Lead and Cadmium

RichHTML

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments

[1]	LIU Bin, CUI Xing-tao, WANG Xue-qiu, HU Qing-hai. Source Identification and Health Risk Assessment of Heavy Metals in Groundwater of Yongqing County, Hebei Province [J]. Journal of Ecology and Rural Environment, 2023, 39(6): 741-749.
[2]	WANG Yu-rong, ZHOU Zhi-gao, DING Chang-feng, ZHANG Tao-lin, WANG Xing-xiang. Adsorption of Ammonia Nitrogen from Rare Earth Wastewater by NaCl Modified Zeolite and Its Mechanism [J]. Journal of Ecology and Rural Environment, 2023, 39(6): 795-802.
[3]	ZHOU Xiang-yang, LIU Jia-yue, SUN Shang-gui, LEI Wen-juan. Spectral Characteristics of Dissolved Organic Matter Released from Biochar Made from Different Biomass [J]. Journal of Ecology and Rural Environment, 2023, 39(6): 819-826.
[4]	LIU Ming-qing, HAN Xiao, YANG Yu-wen, GAO li, LI Yan, XI Yun-guan, ZHANG Ji-bing, HUANG Si-jie. Investigation and Evaluation of Soil Fertility under Different Land-use Patterns:A Case Study of Getang Village,Jiande City,Zhejiang Province [J]. Journal of Ecology and Rural Environment, 2023, 39(3): 394-401.
[5]	MA Jie-chen, YANG Zheng-zhou, CHEN Jian, GONG Ming-jie, YANG Ming, WANG Jun. Enhanced Domestic Sewage Pollutants Degradation Using Sludge Biochar in Constructed Wetlands [J]. Journal of Ecology and Rural Environment, 2023, 39(3): 412-421.
[6]	GUO Bing-yue, YANG Kun-peng, ZHANG Jing, DAI Jun-cheng, CHENG Zhi-yan, ZHANG Ya-ping. Research on the Remediation Effect of Manganese Dioxide/Amino-modified Biochar on Pb and Cd Composite Contaminated Soil [J]. Journal of Ecology and Rural Environment, 2023, 39(3): 422-428.
[7]	QIAN Zhe-dong, CAO Xiao, CHEN Hao, Lü Ying-ying, GAO Jun, ZHANG Hao-nan. Driving Mechanism of Spatial Evolution of Rural Settlements in the Yaoluoping National Nature Reserve, Anhui Province [J]. Journal of Ecology and Rural Environment, 2023, 39(2): 207-213.
[8]	HUANG Hui-qun, ZENG He-ping, LIU Xi-yuan. Effects of Different Electrolytes on Adsorption-desorption of Fulvic Acid onto Dairy Manure Biochar [J]. Journal of Ecology and Rural Environment, 2023, 39(12): 1637-1645.
[9]	LIU Yi-han, LIU Ying, WANG Li-na, YANG Lu, DENG Shao-po, WEI Jing, MAO Meng. Effect of Mulberry Stems Biochar on Immobilization of Cd, Pb and Zn in Redox Dynamic Soil [J]. Journal of Ecology and Rural Environment, 2023, 39(11): 1483-1491.
[10]	ZHAO Teng, SUN Ming-yang, GE Xin-lei. Chemical Speciation, Source Appointment and Health Risk Assessment of Heavy Metals in PM_2.5 in Winter in the North Suburb of Nanjing [J]. Journal of Ecology and Rural Environment, 2023, 39(10): 1257-1266.
[11]	LI Hong-hong, CHEN Xin-jie, YE Yan-qing, YANG Zhe-xiang, HUANG Xing-zhou, ZHOU Xi, ZHANG Wen-er. Performance and Mechanism of Pb²⁺ Adsorption by Micro-nano-engineered Nitrogenous Biochar [J]. Journal of Ecology and Rural Environment, 2023, 39(10): 1346-1355.
[12]	CAO Yun, LIU Xing-chao, WANG Guang-kui, WU Hua-shan, SUN Qian, HUANG Hong-ying, XU Yue-ding. Composting of Bio-bedding Materials for Ducks and the Effects of Returning Composted Bedding Materials to Field [J]. Journal of Ecology and Rural Environment, 2023, 39(10): 1356-1364.
[13]	CHEN Su, LIU Ying, ZHANG Xiao-ying, FENG Tian-zhen, CHAO Lei. Progress in the Study on Ageing Behavior of Microplastics and Its Effect on Heavy Metal Adsorption [J]. Journal of Ecology and Rural Environment, 2023, 39(1): 12-19.
[14]	LI Xiu-xia, WU Teng. Study on Impact Factors and Scaling Effect of Spatial Distribution of Cr Content in Regional Soil [J]. Journal of Ecology and Rural Environment, 2022, 38(9): 1122-1128.
[15]	NIE Li-yao, HU Kai, WANG Hao-rui, SHI Chen-fei, WANG Guo-xiang. Degradation of Sulfadiazine Using Persulfate Activated by Sludge Biochar [J]. Journal of Ecology and Rural Environment, 2022, 38(9): 1165-1173.