干旱区生态环境知识资源中心(Arid): Wastewater irrigation: An opportunity for improving soil phosphorus availability; PHREEQC modeling and adsorption studies

Arid

DOI	10.1016/j.scitotenv.2022.158180
	Wastewater irrigation: An opportunity for improving soil phosphorus availability; PHREEQC modeling and adsorption studies
	Davand, Hiva; Sepehr, Ebrahim; Momtaz, Hamid Reza; Ahmadi, Fatemeh
通讯作者	Sepehr, E
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2022
卷号	851
英文摘要	Wastewater, an alternative supply of water and nutrients, is being allocated as a priority for human population sustain -ability in arid and semi-arid regions. This work proposes phosphorus (P), a vital growth-limiting nutrient, adsorption behavior in wastewater irrigated agricultural soils in comparison to non-irrigated soils using laboratory batch experiments. The adsorption mechanism was assessed using different adsorption isotherm models. Saturation indices were modeled, using the hydro-geochemical transport code PHREEQC and MINTEQ geochemical software. Phosphorus buffering parameters were also calculated based on the standard equations. The equilibrium data were well fitted with the Freundlich isotherm model. The physical adsorption mechanism was found based on the calculated isotherm parameters. The maximum adsorption capacity was two times more in non-wastewater irrigated soils than irrigated. Results highlighted the effectiveness of wastewater irrigation in P availability in soil. Based on the PHREEQC modeling data, precipitation of Pb and Zn mineral phases was probable in soils by wastewater influence. Meanwhile, the precipitation of stable calcium phases, that affect the P sorption and/or co-precipitation, in non-wastewater irrigated soils was highlighted in the PHREEQC calculations. The standard buffer capacity (SBC) was 43 and 64 L kg(-1) in wastewater irrigated soils and non-irrigated soils, respectively. Findings of the present study demonstrate the importance of waste-water reuse opportunities for agricultural application, especially soil P availability, and are helpful to minimize the environmental impacts of wastewater and solid waste.
英文关键词	Isotherm Geochemical modeling Phosphorus buffering capacity Visual MINTEQ
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000861021300015
WOS关键词	REMOVAL ; RECOVERY
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/394407
推荐引用方式 GB/T 7714	Davand, Hiva,Sepehr, Ebrahim,Momtaz, Hamid Reza,et al. Wastewater irrigation: An opportunity for improving soil phosphorus availability; PHREEQC modeling and adsorption studies[J],2022,851.
APA	Davand, Hiva,Sepehr, Ebrahim,Momtaz, Hamid Reza,&Ahmadi, Fatemeh.(2022).Wastewater irrigation: An opportunity for improving soil phosphorus availability; PHREEQC modeling and adsorption studies.SCIENCE OF THE TOTAL ENVIRONMENT,851.
MLA	Davand, Hiva,et al."Wastewater irrigation: An opportunity for improving soil phosphorus availability; PHREEQC modeling and adsorption studies".SCIENCE OF THE TOTAL ENVIRONMENT 851(2022).