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result(s) for
"Salt lakes"
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Gravity Hill
“The sound of parenthood is the sigh.” So begins Gravity Hill, written from the perspective of a new father seeking hope, beauty, and meaning in an uncertain world. Many memoirs recount the author’s experiences of growing up and struggling with demons; Werner’s shows how old demons sometimes return on the heels of something as beautiful as children. Werner’s memoir is about growing up, getting older, looking back, and wondering what lies ahead—a process that becomes all the more complicated and intense when parenting is involved. Moving backward and forward between past, present, and future, Gravity Hill does not delineate time so much as collapse it.
Werner narrates his struggle growing up in suburban Utah as anon-Mormon and what it took for him, his siblings, and his friends to feel like they belonged. Bonding in separation, they indulged in each other, in natural and urban landscapes, and sometimes in the destructive behaviors that are the native resort of outsidersincluding promiscuous and occasionally violent sexual behavior—and for some, paths to death and suicide. Gravity Hill is the story of the author’s descent into and eventual emergence from his dysfunction and into a newfound life. Infused with humor, honesty, and reflection, this literary memoir will resonate with readers young and old.
eBook
Decline of the world's saline lakes
Many of the world's saline lakes have been shrinking due to consumptive water use. The Great Salt Lake, USA, provides an example for how the health of and ecosystem services provided by saline lakes can be sustained.
Many of the world's saline lakes are shrinking at alarming rates, reducing waterbird habitat and economic benefits while threatening human health. Saline lakes are long-term basin-wide integrators of climatic conditions that shrink and grow with natural climatic variation. In contrast, water withdrawals for human use exert a sustained reduction in lake inflows and levels. Quantifying the relative contributions of natural variability and human impacts to lake inflows is needed to preserve these lakes. With a credible water balance, causes of lake decline from water diversions or climate variability can be identified and the inflow needed to maintain lake health can be defined. Without a water balance, natural variability can be an excuse for inaction. Here we describe the decline of several of the world's large saline lakes and use a water balance for Great Salt Lake (USA) to demonstrate that consumptive water use rather than long-term climate change has greatly reduced its size. The inflow needed to maintain bird habitat, support lake-related industries and prevent dust storms that threaten human health and agriculture can be identified and provides the information to evaluate the difficult tradeoffs between direct benefits of consumptive water use and ecosystem services provided by saline lakes.
Journal Article
Development-Ecological Protection Conflicts and Coordination at West Taijinel Salt Lake
The Qaidam Basin in China, recognized for its copious salt lake mineral resources, holds immense significance for the nation’s sustenance and industrial progression. However, the escalating exploitation of these resources has led to substantial conflicts between economic pursuits and ecological conservation. Ongoing activities like water diversion for flood control and brine extraction are hindering the preservation of the lake’s natural ecosystem. This study examines the challenges of salt lake exploitation and ecological conservation, proposing measures for environmental stewardship. These include delineating the responsibilities of production zones designated for salt lake development; advocating the comprehensive harnessing of flood resources; and establishing a collaborative platform for integrating ecological data among government entities, regulatory bodies, and private enterprises. This research aims to lay the groundwork for ecological management policies for salt lakes in the Qaidam region to balance the development of a top-tier salt lake production base with environmental preservation.
Journal Article
Lithium extraction from salt lake brines with high magnesium/lithium ratio: a review
The demand for lithium is growing rapidly with the increase in electric vehicles, batteries and electronic equipments. Lithium can be extracted from brines, yet the separation of lithium ions Li
+
from magnesium ions Mg
2+
is challenging at high Mg/Li ratios. Here, we review methods to extract lithium from brines, such as extraction, adsorption, nanofiltration, selective electrodialysis and electrochemical intercalation/de-intercalation, with focus on the selective separation of lithium at high Mg/Li ratios. Extraction can be done with organic solvents and ionic liquids. Adsorption is performed with aluminum-, manganese- and titanate-based adsorbents.
Journal Article
Dance with the Bear
This carefully researched and illuminating biography recounts a pivotal period in Utah’s history as revealed by the life of businessman, community activist, and statesman Joe Rosenblatt. After successfully building Eimco Corporation, his manufacturing and construction business, into an industry leader—and, by the 1950s, Utah’s largest privately owned company—Rosenblatt spent the better part of his time following his retirement in 1963 as a devoted public servant. He served as chairman of the “Little Hoover Commission,” charged by Utah governor Calvin Rampton in 1965 to investigate the operation of the executive branch of the state’s government. He would go on to serve on more than fifty boards and commissions.
The “Little Hoover Commission” was modeled after the 1947 initiative of President Harry Truman, who created the Commission on Organization of the Executive Branch of Government to recommend administrative changes and appointed former president Herbert Hoover to chair it. Rosenblatt, a perceptive and outspoken figure, brought a much-needed dose of urgency and pragmatism to the Utah process and formulated a number of far-reaching suggestions to the legislature—many of which were adopted and still exist to this day. His work with the commission coupled with his later role on the San Francisco Federal Reserve Board did much to modernize Utah. Rosenblatt’s legacy as a perpetual champion of the community is further exemplified by his role as cultural conduit between Salt Lake’s Jewish community and the leaders of the Church of Jesus Christ of Latter-day Saints.
This readable work will serve as an integral addition to Utah business and political history, enriching the library of anyone looking for an engaging story of a remarkable and transformative figure.
eBook
Doping engineering of lithium-aluminum layered double hydroxides for high-efficiency lithium extraction from salt lake brines
Lithium-aluminum layered double hydroxides (LiAl-LDH) have been be successfully applied in commercial-scale for lithium extraction from salt lake brine, however, further advancement of their applications is hampered by suboptimal Li+ adsorption performance and ambiguous extraction process. Herein, a doping engineering strategy was developed to fabricate novel Zn
2+
-doped LiAl-LDH (LiZnAl-LDH) with remarkable higher Li
+
adsorption capacity (13.4 mg/g) and selectivity (separation factors of 213, 834, 171 for Li
+
/K
+
, Li
+
/Na
+
, Li
+
/Mg
2+
, respectively), as well as lossless reusability in Luobupo brine compared to the pristine LiAl-LDH. Further, combining experiments and simulation calculations, it was revealed that the specific surface area, hydrophilic, and surface attraction for Li
+
of LiZnAl-LDH were significantly improved, reducing the adsorption energy (
E
ad
) and Gibbs free energy (ΔG), thus facilitating the transfer of Li
+
from brine into interface followed by insertion into voids. Importantly, the intrinsic oxygen vacancies derived from Zn-doping depressed the diffusion energy barrier of Li
+
, which accelerated the diffusion process of Li
+
in the internal bulk of LiZnAl-LDH. This work provides a general strategy to overcome the existing limitations of Li
+
recovery and deepens the understanding of Li
+
extraction on LiAl-LDH.
Journal Article
Resources and eco-environmental protection of salt lakes in China
The Chinese salt lake mega-region is controlled by an arid and semi-arid climate, and modern salt lakes are mainly distributed within areas with mean annual precipitation <500 mm. According to their geomorphological features, structural conditions, and material composition, salt lakes in China can be broadly divided into four regions. The degrees of exploitation and utilization of these salt lakes differ because these four regions have experienced different climatic changes and structural activities and have had their own characteristics of salt lake evolution since the beginning of the Quaternary. The salt lakes in these regions have different scales, economic value, and technical conditions for traffic. Among others, Jarantai (Jartai) Salt Lake and Yuncheng Salt Lake are better in terms of comprehensive utilization and environmental protection, and the potash salt lakes represented by Qarhan are most important in terms of exploitation. At present, there exist many environmental problems in the salt lake regions of China, especially in remote, small and medium-sized basins, where abusive or wasteful mining, low recovery, and mining of a single saline mineral have caused impoverishment and large quantities of byproducts. Furthermore, climatic environmental factors can also cause significant changes of salt lake environment. Since 1987, against the background of global warming, the climate in the northwest salt lake region has turned warm and wet, and lakes have exhibited a tendency for expansion and rise, whereas in the east of the region, the climate has remained in a warm dry stage, lake levels have dropped, and salt lakes have become desertified. With the implementation of the strategy of building an environmentally friendly society in China, increasing attention is being paid to eco-environmental protection. It is suggested that experience and advanced techniques in terms of comprehensive utilization, overall development, and environmental protection of salt lakes at home and abroad be further developed to strengthen observation and monitoring of environmental changes of salt lakes and build an environmentally friendly, great salt lake industry.
Journal Article
Environmentally benign techniques of lithium extraction from salt lakes: a review
To address the increasing demand for lithium, the recovery of lithium from salt lake brines has garnered significant attention. Techniques have been developed; however, these approaches exhibit drawbacks such as high energy consumption, excessive freshwater usage, and substantial dissolution losses, presenting environmental concerns. This review discusses the application and characteristics of four extractant systems used in solvent extraction: organophosphates, ionic liquids, crown ethers, and β-diketones. Furthermore, we present the optimization of organophosphate systems to make them more environmentally friendly. Optimization encompasses four key aspects: synergistic extractants, coextractants, diluents, and main extractants. Solvent extraction is a simple, cost-effective, and environmentally benign technique for lithium extraction from brine. Modifying the structure of these extractants can reduce dissolution rates and improve extraction efficiencies.
Journal Article