Unraveling sorption of lead in aqueous solutions by chemically modified biochar derived from coconut fiber: a microscopic and spectroscopic investigation
文献类型：期刊论文
| 作者 | Wu, Weidong1,2; Li, Jianhong2; Lan, Tian2; Muller, Karin3; Niazi, Nabeel Khan4,5,6; Chen, Xin1; Xu, Song1; Zheng, Lirong7; Chu, Yingchao2; Li, Jianwu8 |
| 刊名 | Science of the total environment
 |
| 出版日期 | 2017-01-15 |
| 卷号 | 576页码:766-774 |
| ISSN号 | 0048-9697 |
| 关键词 | Heavy metal Biochar Chemical modification Xafs Sem-edx |
| DOI | 10.1016/j.sdtotenv.2016.10.163 |
| 通讯作者 | Wang, hailong(nzhailongwang@163.com) |
| 英文摘要 | In this study, we examined the efficacy of nine different types of coconut-fiber derived biochars (cfbs), prepared at different temperatures and chemically modified with ammonia, hydrogen peroxide and nitric acid, to remove lead. (pb2+) from aqueous solutions. langmuir-q(m) values of the biochars pyrolyzed at 300 degrees c and modified with ammonia and nitric acid increased from 49.5 to 105.5 and 85.2 mg g(-1), respectively, compared to control (unmodified), whereas hydrogen peroxide treatment had no effect. the maximum amount of pb adsorbed on biochars was in the order of cfb-700 > mcfb-300-nh3. h2o > cfb-500 > mcfb-300-hno3 > cfb-300. x-ray absorption fine structure (xafs) spectroscopy results revealed that pb-montmorillonite, pb(c2h3o2)(2), pbso4, pb-al2o3 and pb-3(po4)(2) were the five most important pb species observed in pb-loaded biochars, and as such, favoring pb immobilization in aqueous solutions. overall, the sorption capacity of cfbs pyrolyzed at 300 degrees c substantially increased for pb2+ with ammonia and nitric acid modification. however, these chemical modifications did not improve the sorption of pb on cfbs pyrolyzed at temperatures >= 500 degrees c, thereby highlighting a temperature dependent response of chemically modified biochars to pb sorption in this study. (c) 2016 elsevier b.v. all rights reserved. |
| WOS关键词 | HEAVY-METALS ; XAFS SPECTROSCOPY ; SOIL ; ADSORPTION ; REMOVAL ; IMMOBILIZATION ; GASES ; CHARS ; WATER ; RICE |
| WOS研究方向 | Environmental Sciences & Ecology |
| WOS类目 | Environmental Sciences |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCIENCE BV |
| WOS记录号 | WOS:000390964700072 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2176859 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Wang, Hailong |
| 作者单位 | 1.Foshan Univ, Sch Environm & Chem Engn, Foshan 528000, Guangdong, Peoples R China 2.Hainan Univ, Key Lab Protect & Dev Utilizat Trop Crop Germplas, Minist Educ, Haikou 570228, Hainan, Peoples R China 3.New Zealand Inst Plant & Food Res Ltd, Ruakura Res Ctr, Private Bag 3123, Hamilton, New Zealand 4.Univ Agr Faisalabad, Inst Soil & Environm Sci, Faisalabad 38040, Pakistan 5.Univ Bremen, MARUM, D-28359 Bremen, Germany 6.Univ Bremen, Dept Geosci, D-28359 Bremen, Germany 7.Chinese Acad Sci, Inst High Energy Phys, Beijing 100039, Peoples R China 8.Zhejiang A&F Univ, Sch Environm & Resource Sci, Key Lab Soil Contaminat Bioremediat Zhejiang Prov, Hangzhou 311300, Zhejiang, Peoples R China 9.Guangdong Dazhong Agr Sci Co Ltd, Dongguan 523169, Guangdong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Weidong,Li, Jianhong,Lan, Tian,et al. Unraveling sorption of lead in aqueous solutions by chemically modified biochar derived from coconut fiber: a microscopic and spectroscopic investigation[J]. Science of the total environment,2017,576:766-774. |
| APA | Wu, Weidong.,Li, Jianhong.,Lan, Tian.,Muller, Karin.,Niazi, Nabeel Khan.,...&Wang, Hailong.(2017).Unraveling sorption of lead in aqueous solutions by chemically modified biochar derived from coconut fiber: a microscopic and spectroscopic investigation.Science of the total environment,576,766-774. |
| MLA | Wu, Weidong,et al."Unraveling sorption of lead in aqueous solutions by chemically modified biochar derived from coconut fiber: a microscopic and spectroscopic investigation".Science of the total environment 576(2017):766-774. |
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