China’s industrial gray water footprint assessment and implications for investment in industrial wastewater treatment

Huang, Yuanyi; Zhou, Beihai; Han, Ruru; Lu, Xiaohui; Li, Shuo; Li, Nan

doi:10.1007/s11356-019-07405-y

Cited by 15 publications

(3 citation statements)

References 39 publications

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“…In recent years, with the rapid development of industries and cities in China, harmful heavy metals such as nickel, cadmium, and lead ions have been discharged into the groundwater, along with mining, metallurgy, chemical, electronics, electroplating and other industries [1][2][3][4], causing serious pollution to the water environment. Since heavy metal ions are not degradable in the water environment, they will pose a serious threat to human health through the enrichment of the food chain [5][6][7][8]. Among them, lead ion cannot be easily removed once they enter the environment.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Lead Ion from Wastewater Using Non-Crystal Hydrated Calcium Silicate Gel

et al. 2021

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In order to obtain low-cost and excellent adsorption materials, this paper used calcium acetate and water glass as raw materials to synthesis hydrated calcium silicate gel by precipitation method. The performance and structure of hydrated calcium silicate gel were systematically studied by X-ray photoelectron spectroscopy, fourier transform infrared spectroscopy, specific surface area analyzer and scanning electron microscope. Studies have shown that, non-crystal hydrated calcium silicate gel (CSH) were successfully prepared, and the removal rate of lead ion using CSH reached more than 90%. The adsorption process is consistent with the pseudo-second-order kinetic model and Langmuir adsorption isotherm model, and the limit adsorption capacity reaches 263.17 mg·g−1. The acid treatment experiment proved that the adsorption capacity of lead ion using CSH was satisfactory, and the adsorption rate remained at >60% after 5 cycles. The research may provide a low-cost, high-efficiency and high stability adsorbent.

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Section: Introductionmentioning

confidence: 99%

Adsorption of Lead Ion from Wastewater Using Non-Crystal Hydrated Calcium Silicate Gel

et al. 2021

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“…Previous studies have reported a spatial variation of WFP at local, regional [44], and global scales [39,45]. Understanding the spatial variation of WFP is essential to comprehending the production and consumption perspectives [46], water return on investment [47], and water investment options [48] in each specific area. Therefore, farmers in Ruchanyu need more sustainable investments to improve their WFP.…”

Section: Yield and Water Footprintmentioning

confidence: 99%

Socio-Economic Factors and Water Footprint in Smallholder Irrigation Schemes in Zimbabwe

Mwadzingeni

Mugandani²,

Mafongoya³

2022

Water

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Despite the need to grow crops with low water consumption needs, given the increasing water stress across many regions of the globe, assessments of crop water footprint (WFP) values have not received significant research attention in Zimbabwe. This unique study is the first of its kind to assess the mediation effect between socio-economic factors and crop WFP among smallholder irrigation schemes in Zimbabwe. A total of 317 farmers from three schemes in Midlands Province in Zimbabwe participated in this study. The following were the main findings in terms of the examined variables: (1) Schemes (p < 0.01), Gender (p < 0.05), and Maint (p < 0.1) all decreased WFP_Maize; (2) education showed a reduction effect on the link between scheme maintenance and WFP_Maize; (3) secondary education has a higher impact on the magnitude of Maint on WFP_Maize; and (4) Maint and WFP_Maize have a positive correlation. This study illustrates the interaction of socio-economic factors on WFP and has substantial implications for simultaneously addressing the sustainable consumption of water for crop production, food security, and malnutrition in a changing climate.

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“…The concept of the ecological footprint (EF) was proposed by William and introduced by Wackernagel in the field of assessing water resources [13,14]. The current research on EF W has concentrated on industrial production [15][16][17][18][19][20] and agricultural security [21][22][23][24], whereas quantitative assessments of urban water security are lacking [25]. However, the problem of water loss and polluted water have received increasing attention, which have made water companies, politicians, urban planners and other stakeholders use the concept of the ecological footprint of water to determine the direction of investment and policy implementation.…”

Section: Introductionmentioning

confidence: 99%

An Evaluation of the Sustainability of the Urban Water Resources of Yanbian Korean Autonomous Prefecture, China

2023

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The availability of water resources is crucial to maintaining the sustainability of urbanization. Calculating the ecological footprint of water (EFW) is one of the ways to realize the protection of water resources in the process of urbanization. The minor settlements in border areas have been the focus of China’s urbanization development but have rarely received research attention. The objective of this study was to develop an improved model of the ecological footprint of water (EFW) to assess the water security status of urban areas in Yanbian Korean Autonomous Prefecture (YKAP), and to demonstrate its authenticity compared with the traditional ecological footprint of water (EFW). The results showed that water pollution is the main reason for the increase in the EFW in each city, and the ecological water carrying capacity (ECW) showed strong fluctuations with the interannual variation in precipitation. Although the overall availability and quality of water resources are within safe limits, there are significant differences among cities, and water pollution poses a direct threat to the health and well-being of urban dwellers in some cities. Therefore, it is recommended that water resource management agencies adjust their water supply strategies based on the data from the EFW model, control wastewater discharge, improve their management systems and take urban economic development into account. This will significantly improve the sustainable management of water resources and ensure the health and well-being of urban residents.

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China’s industrial gray water footprint assessment and implications for investment in industrial wastewater treatment

Cited by 15 publications

References 39 publications

Adsorption of Lead Ion from Wastewater Using Non-Crystal Hydrated Calcium Silicate Gel

Adsorption of Lead Ion from Wastewater Using Non-Crystal Hydrated Calcium Silicate Gel

Socio-Economic Factors and Water Footprint in Smallholder Irrigation Schemes in Zimbabwe

An Evaluation of the Sustainability of the Urban Water Resources of Yanbian Korean Autonomous Prefecture, China

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