Boron as a contaminant at construction and demolition (C&amp;D) debris landfills

Xu, Rui; Gale, S. Adrian; Kim, Hwidong; Lott, Richard S.; Spreadbury, Chad J.; Laux, S.E.; Townsend, Timothy G.

doi:10.1016/j.wasman.2020.04.051

Cited by 10 publications

(4 citation statements)

References 32 publications

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“…[37] Some of these wastes end up in landfill, which could impact ground water systems. For instance, boron concentrations in groundwater treatment were assessed using a monitoring approach which is considered as a process of LCA [38]. Prior to this study, the closest works include [39,40], where manufacturing and agricultural production activities were investigated on a single study period (1 year) and considering a single region (U.S. economic system).…”

Section: Literature Reviewmentioning

confidence: 99%

A Comparative Time-Series Investigation of China and U.S. Manufacturing Industries’ Global Supply-Chain-Linked Economic, Mid and End-Point Environmental Impacts

Saber¹,

Eğilmez

Gedik

et al. 2021

Sustainability

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Manufacturing activities of China and the U.S. account for a substantial portion of the global manufacturing output and environmental sustainability impacts. The two countries’ economies account for one third of the global economic output. Their supply chains are critically linked with and serve most of the production and service industries across the globe. Recent global trends in manufacturing necessitate a study that comparatively analyzes the two countries’ manufacturing industries from an economic and environmental perspective. In this paper, U.S. and China manufacturing industries were investigated to analyze the economic and mid and endpoint environmental impacts over a 20-year study period. The literature is abundant with single period and single country focused works, and this study contributes to the state-of-art by extending the temporal dimension to 20 years and spatial focus to the global economy (40 countries and rest of the world). In terms of the methodology, Multi-region input-output (MRIO) models were built using the World Input-Output Database (WIOD) as the primary database, global input-output tables, environmental impact and economic output multipliers, and manufacturing industries’ final demand. Twenty MRIO models, each comprised of 40 major economies and the rest of the world (ROW), were built to cover the global trade linkages, which yielded the global supply chain linked cradle-to-gate life cycle inventory (LCI) of economic outputs and environmental impacts. The environmental LCI was extended to midpoint (Global Warming Potential (GWP) and Ozone Depletion Potential (ODP)) and endpoint (human health and ecosystem) impact dimensions by ReCipe framework. Lastly, the relative impact of a unit change in Leontief inverse, final demand and Green House Gas (GHG) emission multipliers on the total economic output and environmental impacts were explored with structural decomposition analysis (SDA). Results indicated that both countries’ manufacturing industries experienced positive economic output growth, in which China was more dominant in recent years. Both countries’ manufacturing industries’ midpoint and endpoint impacts were found to be steeply rising despite the negative growth observed in emissions intensities. The amount of GHG emissions and related midpoint (global warming and ozone depletion) and endpoint (damage to ecosystems and human life) impacts seemed to be quickly worsening in China compared to the USA.

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Section: Literature Reviewmentioning

confidence: 99%

A Comparative Time-Series Investigation of China and U.S. Manufacturing Industries’ Global Supply-Chain-Linked Economic, Mid and End-Point Environmental Impacts

Saber¹,

Eğilmez

Gedik

et al. 2021

Sustainability

View full text Add to dashboard Cite

show abstract

“…Now, these wastes, generate high pollution rates. For example, in the USA, high concentrations of boron were found in 22 construction and demolition debris landfills (Xu et al, 2020). These wastes also reduce the percolation of rainwater that recharges the groundwater table and affects the integrity of the environment, resulting in landfill dumping contaminating soil, air and wáter (Sivamani et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Use of recycled concrete and rice husk ash for concrete: A review

Muñoz Pérez,

Sánchez Díaz,

Barboza-Cullqui

et al. 2024

JART

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The rapid development of populations and the demand in the consumption of concrete is generating the need to produce larger quantities of cement, which brings with it negative effects for the environment. Approximately 0.87 kg of CO2 is produced by the manufacture of cement; In addition, the use of aggregates is generating great concern in the construction industry, due to the costs and the restriction of these. Similarly, the accumulation of construction and demolition waste (RCA) and rice husk ash (RHA) contribute to pollution. Therefore, the objective of this manuscript is to review the literature on the use of RCA and RHA for the elaboration of concrete. For this, indexed articles were used, between the years 2017-2021. The results showed that when 8% RHA is added, the concrete reaches a compressive strength of 70 MPa; as well as, the flexural strength of concrete by adding 50% RCA + 1.50% basalt microfibers was increased by 29.44%. On the other hand, when RHA is added by 15% it reaches a compressive strength of 48.8 MPa; in turn, the mechanical performance at bending with 10% seashell by fine aggregate and 20% RHA by cement, reached a resistance of 65 MPa. Concluding, that the behavior of concrete undoubtedly depends on the proportions of either RCA or RHA; however, the percentages must be no more than 8% and 15% respectively.

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“…Boron is a conservative element with a wide range of natural isotope ratio values in the Earth's critical zone [1], making it a useful element for environmental research. Numerous studies used boron isotopes as a proxy tracer of environmental contaminants [1][2][3][4][5][6][7][8]. This type of study is possible because boron (B) is added to common environmental contaminants, such as fertilizers and detergents [5].…”

Section: Introductionmentioning

confidence: 99%

“…Boron has two stable isotopes, namely, 11 B and 10 B, that occur in the aqueous environment in the forms of trigonal boric acid B(OH) 3 and tetrahedral borate ion B(OH) − 4 [11]. The proportion of boric acid to borate is dependent on the pH, with boric acid dominant at lower pH (most groundwaters) and borate dominant at higher pH.…”

Section: Introductionmentioning

confidence: 99%

Boron Isotopes in Fresh Surface Waters in a Temperate Coastal Setting

Peritore,

Rasbury,

Wooton

et al. 2023

Hydrology

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The results from a four-year study of a freshwater pond on Long Island, NY, USA, do not point to a single source of boron (and by proxy other elements including nutrients) in this system. However, boron data from samples associated with this pond can be explained by mixing between average precipitation (weighted average δ11B = 22.7) in the area and the local sources of boron, both natural and anthropogenic. This multiyear study provided the opportunity to see both yearly and seasonal differences. One algae sample from the pond showed significant fractionation and enrichment in light boron relative to the water and suggests algae may act as a boron sink. This type of biological fractionation could explain an observed down-gradient trend to heavier boron isotope values in pond water, which corresponds to the slight reduction in boron concentration seen in 2021. However, the trend was subdued in the following year, likely due to differences in the water flow rates and/or rate of algal growth. An opposite trend was seen with depth in the water, where δ11B showed a positive correlation to boron concentration, which increased with depth from the surface of the pond. This gradient may be explained by the stratification of the pond with a heavy source concentrating in the bottom waters. The bottom water composition was consistent with goose feces (δ11B = 25.8) or the addition of chemicals from the application of rock salt to local roads in winter. Surprisingly, boron from seawater (average δ11B = 39.8) did not appear to have a direct impact on Setauket Pond, other than its influence on precipitation, providing heavy δ11B and very low boron concentrations.

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Boron as a contaminant at construction and demolition (C&D) debris landfills

Cited by 10 publications

References 32 publications

A Comparative Time-Series Investigation of China and U.S. Manufacturing Industries’ Global Supply-Chain-Linked Economic, Mid and End-Point Environmental Impacts

A Comparative Time-Series Investigation of China and U.S. Manufacturing Industries’ Global Supply-Chain-Linked Economic, Mid and End-Point Environmental Impacts

Use of recycled concrete and rice husk ash for concrete: A review

Boron Isotopes in Fresh Surface Waters in a Temperate Coastal Setting

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