Gel-based nanocomposite using persulfate-activated bread crumbs for fulvic acid release and Pb(II) removal

doi:10.1016/j.cej.2022.137002

	Gel-based nanocomposite using persulfate-activated bread crumbs for fulvic acid release and Pb(II) removal
	Cai, Dongqing 2; Yao, Xia 2; Wu, Qingchuan 1; Ye, Jinghong 2; Zhang, Jing 2; Guo, Minxue 2; Xu, He 2; Wang, Dongfang 2
刊名	CHEMICAL ENGINEERING JOURNAL
	2022-10-15
卷号	446
关键词	Bread crumbs Persulfate activation Fulvic acid Gel sphere Pb(II)
ISSN号	1385-8947
DOI	10.1016/j.cej.2022.137002
通讯作者	Wang, Dongfang(dfwang@dhu.edu.cn)
英文摘要	Breadmaking industry is one of the world's largest food industries, and hundreds of tons of bread are wasted worldwide every year. In this study, a gel nanocomposite fulvic acid-based bread crumb (GN/FABC) was fabricated using persulfate-activated bread crumbs to release fulvic acid (FA) and remove bivalent lead (Pb(II)). Bread crumbs were treated with K2S2O8 under alkaline conditions to produce FABC. Subsequently, the FABC, biochar, and Fe3O4 were mixed with sodium alginate (SA) aqueous to form a homogeneous solution, and the mixed solution was then added dropwise to the FeCl3 aqueous solution to create GN/FABC. Therein, SA could be cross-linked with FeCl3 to form a gel sphere. After 2 h, the FA content in the FABC reached 50 mg/g, and the maximum temperature reached 80 degrees C during the activation of the bread crumbs. Additionally, the equilibrium quantity of FA released from GN/FABC reached 42 mg/g after being in water for 24 h. Meanwhile, the removal efficiency of GN/FABC in water for Pb(II) could be 75% after 36 h. Furthermore, the release mechanism of FA from GN/FABC was consistent with the Ritger-Peppas law and the removal kinetics of Pb(II) followed the pseudo second-order model. Notably, a pot experiment revealed that GN/FABC could inhibit the bioavailability of Pb(II). Thus, this study provided a new method for dealing with bread waste and achieving efficient resource utilization.
资助项目	Fundamental Research Funds for the Central Universities[2232020D-22] ; Science and Technology Service Program of Chinese Academy of Science[KFJ-STS-QYZD-199] ; National Natural Science Foundation of China[52000025] ; Key R&D Program of Inner Mongolia Autonomous Region[2021GG0300] ; Key R&D Program of Guangdong Province[2020B0202010005]
WOS关键词	ADSORPTION ; EXTRACTION ; CARBON
WOS研究方向	Engineering
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000806971100005
资助机构	Fundamental Research Funds for the Central Universities ; Science and Technology Service Program of Chinese Academy of Science ; National Natural Science Foundation of China ; Key R&D Program of Inner Mongolia Autonomous Region ; Key R&D Program of Guangdong Province
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/131205]
专题	中国科学院合肥物质科学研究院
通讯作者	Wang, Dongfang
作者单位	1.Chinese Acad Sci, Hefei Inst Phys Sci, Key Lab High Magnet Field & Ion Beam Phys Biol, Hefei 230031, Anhui, Peoples R China 2.Donghua Univ, Coll Environm Sci & Engn, Shanghai 201620, Peoples R China
推荐引用方式 GB/T 7714	Cai, Dongqing,Yao, Xia,Wu, Qingchuan,et al. Gel-based nanocomposite using persulfate-activated bread crumbs for fulvic acid release and Pb(II) removal[J]. CHEMICAL ENGINEERING JOURNAL,2022,446.
APA	Cai, Dongqing.,Yao, Xia.,Wu, Qingchuan.,Ye, Jinghong.,Zhang, Jing.,...&Wang, Dongfang.(2022).Gel-based nanocomposite using persulfate-activated bread crumbs for fulvic acid release and Pb(II) removal.CHEMICAL ENGINEERING JOURNAL,446.
MLA	Cai, Dongqing,et al."Gel-based nanocomposite using persulfate-activated bread crumbs for fulvic acid release and Pb(II) removal".CHEMICAL ENGINEERING JOURNAL 446(2022).