Modification and use of biochar from wheat straw (Triticum aestivum L.) for nitrate and phosphate removal from water

doi:10.1080/19443994.2014.994104

CORC > 中国农业科学院 > 农业环境与可持续发展研究所 > 旱作节水研究室

	Modification and use of biochar from wheat straw (Triticum aestivum L.) for nitrate and phosphate removal from water
	Li, Ji-hui 1; Lv, Guo-hua 1; Bai, Wen-bo 1; Liu, Qi 1,3; Zhang, Yuan-cheng 2; Song, Ji-qing 1
刊名	DESALINATION AND WATER TREATMENT
	2016
卷号	57 期号:10 页码:4681-4693
关键词	Nitrate removal Phosphate removal Wheat straw biochar Iron-coated biochar
ISSN号	1944-3994
DOI	10.1080/19443994.2014.994104
通讯作者	Li, Ji-hui
英文摘要	Surface modification can improve biochar adsorption capacity. Biochars were produced from wheat straw through low-temperature pyrolysis at approximately 450 degrees C, activated with hydrochloric acid (HCl), and coated with iron (FeCl3 similar to 6H(2)O) of different amounts. Results showed that activation with HCl and coating with iron can significantly increase biochar adsorption capacity. The increase after HCl treatment was very small at a high ratio of iron to biochar. The optimal ratio of iron to biochar for iron-coated biochar was 0.70. Adsorption capacity was calculated based on the amount of pure nitrogen or phosphorus. The maximum adsorption capacities were 2.47 and 16.58 mg g(-1). The most effective pH values for nitrate and phosphate removal were 3 and 6, respectively. The active substance of the optimal-modified biochar (OMB) was amorphous FeOOH, and the structure similar to C-FedOH(2))(5()s)3 similar to 3 ds was the hydroxylated mineral surface of OMB in a water solution. The equilibrium pH of the adsorption solution was lower than 7 even when the initial pH of the solution was 11 because similar to C-FedOH25 similar to 3 ds changed into similar to C-FedOH24dOH similar to 2 ds, similar to C-FedOH23dOH similar to d, and H3O+ with the increase in pH. Adsorption experiments showed that OMB can be utilized to remove nitrate and phosphate from water.
学科主题	Engineering, Chemical ; Water Resources
语种	英语
出版者	TAYLOR & FRANCIS INC
WOS记录号	WOS:000367846000040
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/19712]
专题	农业环境与可持续发展研究所_旱作节水研究室
作者单位	1.Chinese Acad Agr Sci, Inst Environm & Sustainable Dev Agr, State Key Engn Lab Crops Efficient Water Use & Dr, Beijing 100081, Peoples R China 2.Baoli Biomass Energy Joint Stock Co Ltd, Changan Grp Shengli Oilfield, Dongying 257067, Peoples R China 3.Univ Liege Gembloux Agrobio Tech, Dept Agr Bioengn & Chem, B-5030 Gembloux, Belgium
推荐引用方式 GB/T 7714	Li, Ji-hui,Lv, Guo-hua,Bai, Wen-bo,et al. Modification and use of biochar from wheat straw (Triticum aestivum L.) for nitrate and phosphate removal from water[J]. DESALINATION AND WATER TREATMENT,2016,57(10):4681-4693.
APA	Li, Ji-hui,Lv, Guo-hua,Bai, Wen-bo,Liu, Qi,Zhang, Yuan-cheng,&Song, Ji-qing.(2016).Modification and use of biochar from wheat straw (Triticum aestivum L.) for nitrate and phosphate removal from water.DESALINATION AND WATER TREATMENT,57(10),4681-4693.
MLA	Li, Ji-hui,et al."Modification and use of biochar from wheat straw (Triticum aestivum L.) for nitrate and phosphate removal from water".DESALINATION AND WATER TREATMENT 57.10(2016):4681-4693.