Enhanced removal of NO3-N from water using Fe-Al modified biochar: behavior and mechanism

被引：14

作者：

You Hanyang ^{[1
]}

Li Wenying ^{[1
]}

Zhang Yi ^{[1
]}

Meng Zilin ^{[2
]}

Shang Zhenxiao ^{[2
]}

Feng Xuedong ^{[2
]}

Ma Yanfei ^{[2
]}

Lu Jie ^{[2
]}

Li Menghong ^{[2
]}

Niu Xiaoyin ^{[2
]}

机构：

[1] Shandong Univ Technol, Sch Agr Engn & Food Sci, Zibo 255000, Shandong, Peoples R China

[2] Shandong Univ Technol, Sch Resources & Environm Engn, Zibo 255000, Shandong, Peoples R China

来源：

WATER SCIENCE AND TECHNOLOGY | 2019年 / 80卷 / 10期

基金：

中国国家自然科学基金;

关键词：

adsorption; behavior; biochar; Fe-Al modified; mechanism; NO3-N; NITRATE REMOVAL; AQUEOUS-SOLUTION; ADSORPTION; PHOSPHATE; FLUORIDE; COMPOSITE; ADSORBENT; SURFACE;

D O I：

10.2166/wst.2020.033

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

To remove NO3-N from water, coconut shell biochar (CSB) was modified by a solution of FeCl3, a solution of AlCl3 and a mixture solution of FeCl3 and AlCl3 respectively. The obtained modified biochar with the best effect of NO3-N adsorption was screened out to explore the adsorption behavior and mechanism of NO3-N removal by batch experiments and kinetics and thermodynamics and correlated characterization. The results indicated that the mixture solution of FeCl3- and AlCl3- modified CSB (Fe-Al/CSB) showed the best adsorption performance for NO3-N removal. Iron and aluminum elements existed on the surface of Fe-Al/CSB in the form of FeOOH, Fe2O3, Fe2+, and Al2O3 respectively. The adsorption process could reach equilibrium in 20 min. An acidic condition was favorable for NO3-N adsorption. The presence of coexisting anions was not conducive for NO3-N adsorption. The quasi-second-order model and Freundlich model could be well fitted in the adsorption process. The maximum adsorption capacity of Fe-Al/CSB fitted by the Langmuir model could reach 34.20 mg/g. The adsorption of NO3-N by Fe-Al/CSB was an endothermic and spontaneous process. Ligand exchange and chemical redox reaction were the NO3-N adsorption mechanisms which led to NO3-N adsorption by Fe-Al/CSB.

引用

页码：2003 / 2012

页数：10

共 31 条

[1] Acid leaching and dissolution of major sulphide ore minerals: processes and galvanic effects in complex systems [J].

Abraitis, PK ;

Pattrick, RAD ;

Kelsall, GH ;

Vaughan, DJ .

MINERALOGICAL MAGAZINE, 2004, 68 (02) :343-351

[2] Removal of fluoride from drinking water using highly efficient nano-adsorbent, Al(III)-Fe(III)-La(III) trimetallic oxide prepared by chemical route [J].

Adak, Mrinal K. ;

Sen, Asmita ;

Mukherjee, Arnab ;

Sen, Shrabanee ;

Dhak, Debasis .

JOURNAL OF ALLOYS AND COMPOUNDS, 2017, 719 :460-469

[3] Nitrate removal from water by nano-alumina: Characterization and sorption studies [J].

Bhatnagar, Amit ;

Kumar, Eva ;

Sillanpaa, Mika .

CHEMICAL ENGINEERING JOURNAL, 2010, 163 (03) :317-323

[4] Removal of nitrate and phosphate using chitosan/Al2O3/Fe3O4 composite nanofibrous adsorbent: Comparison with chitosan/Al2O3/Fe3O4 beads [J].

Bozorgpour, Farahnaz ;

Ramandi, Hossein Fasih ;

Jafari, Pooya ;

Samadi, Saman ;

Yazd, Shabnam Sharif ;

Aliabadi, Majid .

INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES, 2016, 93 :557-565

[5] Chitosan-Fe-Al-Mn metal oxyhydroxides composite as highly efficient fluoride scavenger for aqueous medium [J].

Chaudhary, Mohit ;

Rawat, Shweta ;

Jain, Nishant ;

Bhatnagar, Amit ;

Maiti, Abhijit .

CARBOHYDRATE POLYMERS, 2019, 216 :140-148

[6] The role of magnetite nanoparticles in the reduction of nitrate in groundwater by zero-valent iron [J].

Cho, Dong-Wan ;

Song, Hocheol ;

Schwartz, Franklin W. ;

Kim, Bokseong ;

Jeon, Byong-Hun .

CHEMOSPHERE, 2015, 125 :41-49

[7] Fast nitrate and fluoride adsorption and magnetic separation from water on α-Fe2O3 and Fe3O4 dispersed on Douglas fir biochar [J].

Dewage, Narada Bombuwala ;

Liyanage, Achala S. ;

Pittman, Charles U., Jr. ;

Mohan, Dinesh ;

Mlsna, Todd .

BIORESOURCE TECHNOLOGY, 2018, 263 :258-265

[8] Production of biochar from rice husk: Particulate emissions from the combustion of raw pyrolysis volatiles [J].

Dunnigan, Lewis ;

Ashman, Peter J. ;

Zhang, Xiangping ;

Kwong, Chi Wai .

JOURNAL OF CLEANER PRODUCTION, 2018, 172 :1639-1645

[9] Adsorption and reactions of NO on clean and CO-precovered Ir(111) [J].

Fujitani, T ;

Nakamura, I ;

Kobayashi, Y ;

Takahashi, A ;

Haneda, M ;

Hamada, H .

JOURNAL OF PHYSICAL CHEMISTRY B, 2005, 109 (37) :17603-17607

[10] Removal of nitrate from aqueous solution by modified sugarcane bagasse biochar [J].

Hafshejani, Laleh Divband ;

Hooshmand, Abdolrahim ;

Naseri, Abd Ali ;

Mohammadi, Amir Soltani ;

Abbasi, Fariborz ;

Bhatnagar, Amit .

ECOLOGICAL ENGINEERING, 2016, 95 :101-111

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