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... The control of agricultural nitrogen through inflow rivers is crucial for lake aquatic environment conservation, while nitrate is the main form of non-point source pollution of agricultural nitrogen in watersheds. Therefore, understanding the nitrate sources and transformation in the intensive-agricultural region was particularly concerned. Nitrate sources and transformation varied largely during ...
... Mining and extraction of stones and minerals play a significant role in many countries economic growth in the world. The production of dolomite minerals in various industries in India and other countries produces vast amounts of waste in different fractions. Disposal of these types of industrial wastes in an immense quantity causes environmental pollution. The performance of dolomite mining residu ...
... Cyprinus carpio, Oreochromis niloticus and Clarias gariepinus are the most abundantly captured invasive fish species in the mid-stretch of the Ganga river. Fish yield and biomass data based on mean abundance by weight was calculated using algorithms and spatio-temporal population dynamics model for future prediction of these invasive fish species. Temporal biomass forecast based on mean abundance ...
... Excessive demand of concrete is causing depletion of natural sand resources. Especially, the extraction of river sand negatively affects its surrounding environment. A sustainable solution to this problem can be the proper utilization of waste materials and by-products like stone dust (SD) as fine aggregate replacement in concrete. The recycling of stone dust as a construction material lessens the ...
... Urban streams are at high risk of riparian erosion which impacts adjacent infrastructure stability. Methods to prevent stream erosion have been proposed including using recycled concrete (RC) materials to help stabilize the streambed; however, little is known about the environmental and biological impacts of using RC in urban streams. RC, new concrete (NC), and river rock controls were evaluated f ...
... Due to rapid urbanization and onset of various infrastructure projects, construction and demolition waste management is a key challenge to related stakeholders. The utilization of stone crusher dust (SCD) and silica dust (SD) generated as wastes in stone processing units is also a matter of concern as it leads to air pollution. As per the published research articles, these industrial wastes can re ...
ammonium nitrogen; biodiversity; chemical oxygen demand; concrete; hybrids; land use; phosphorus; plant growth; pollution control; rivers; temperature; total nitrogen; total phosphorus; water quality; watersheds; China; Yellow River
Abstract:
... Low-polluted waters treated by traditional constructed wetlands were usually difficult especially because of restricted available land use. A hybrid constructed wetlands (CWs) could be applied to remediate low-polluted rivers, which can realize steps complementary to each other that exploit the specific advantages of the individual systems and achieve higher treatment effects. The hybrid CWs cover ...
... Reusing the industrial waste materials is one of the main aims of sustainability and achieve the environmental protection. However, concrete is the main production for recycling waste materials and cleaning the climate. The utilization of self-consolidating lightweight concrete (SCLC) can achieve two important advantages of the structure self-weight reduction and improving workability. This paper ...
air; biodiversity; concrete; landscapes; rivers; soil pollution; urbanization; water; water quality; watersheds; Brazil
Abstract:
... In this study, we assumed that river rehabilitation refers to a set of ecological and managing actions aimed to recuperate the natural conditions of a river system to sustain biodiversity, permit recreational uses, manage floods, and conciliate the landscape progress. Through this study, we intended to understand the hydrological- and water quality–related variables of three urbanized catchment ar ...
... Accelerated carbonation for recycled concrete aggregate (RCA) was one of the effective and economic solutions for improving the quality of RCA and its concrete products. Previously, a fast wet carbonation method was developed and proved to be effective for property enhancement of the coarse fraction of RCA by transforming the carbonation reaction from a gas-solid phase to a liquid-solid phase. Fas ...
chlorides; concrete; earthquakes; groundwater; liquefaction; piezometers; prioritization; risk; rivers; saltwater intrusion; sand; stormwater; wastewater; water salinity; water salinization; water supply
Abstract:
... Christchurch, New Zealand. Low-lying coastal cities worldwide are vulnerable to shallow groundwater salinization caused by saltwater intrusion and anthropogenic activities. Shallow groundwater salinization can have cascading negative impacts on municipal assets, but this is rarely considered compared to impacts of salinization on water supply. Here, shallow groundwater salinity was sampled at high ...
case studies; concrete; drainage; groundwater; irrigation; models; rhizosphere; river deltas; rivers; seepage; surface water; water shortages; water table; Egypt
Abstract:
... Shortage of surface water is considered an international problem that has even extended to countries that have rivers, in particular countries sharing the same river basins and downstream countries, such as Egypt. This issue requires intensive management of available water resources. Irrigation Canals Rehabilitation (ICR) has become essential to protect surface water in irrigation canals from loss ...
... India, a megadiverse tropical country is grappling with the rising trend of aquatic invasions. Out of 532 introduced non-native fish, 16 species of freshwater aquaculture and aquarium were assessed invasive by using a risk assessment protocol, ‘Fish Invasiveness Screening Test’. Six major identified invasion pathways of the aquatic invasive species were inadvertent or deliberate releases, escapes, ...
Eichhornia crassipes; concrete; construction industry; construction materials; drainage; economic impact; environmental assessment; modulus of elasticity; recycling; research; rivers; tensile strength; testing; wastes; water
Abstract:
... Use of eco-friendly building materials and/or recycling technologies becomes a trend in construction industry. In many countries, fast spreading of water hyacinth in natural rivers and canals results in a drainage problem. Consequently, the municipal offices have to spend substantial annual budgets to get rid of the water hyacinth wastes. This research explores for the first time the development a ...
case studies; cement; coal; concrete; hydrochemistry; rivers; seepage; stream channels; surveys; topographic slope; water pollution; watersheds; China
Abstract:
... The ecological environment of the Northern Slope of Tianshan Mountain (Xinjiang Uygur Autonomous Region) is very fragile and water resources is in severe shortage due to a long time of coal mining. To solve water pollution and wasting problems caused by the seepage of the Toutun river on the northern slope of Tianshan Mountain, we analyzed the geological conditions of the Liuhuanggou Coal Mine, in ...
... Ultra-lightweight foamed alkali-activated concrete based on river sediment-metakaolin blends was prepared by the mixed foaming method of chemical foaming. Polluted river sediment is transformed into eco-friendly foamed concrete without heating and pressure. The results showed that ultra-lightweight foamed concrete presented its dry density between 100 and 600 kg/m³, the thermal conductivity betwee ...
... Impermeable materials are used for parking lots at apartment complexes and large stores which are concentrated in urban areas. These materials increase the amount of surface runoff by blocking infiltration, resulting in flood damage, dry stream phenomena in rivers in urban watersheds, and the depletion of ground water. In this study, a parking lot plot was constructed to quantitatively evaluate th ...
concrete; construction materials; insulating materials; landfills; magnesite; pollution; research; rivers; sand; India
Abstract:
... Magnesite Mine Tailings (MMT) is a kind of waste produced during the mining of magnesite ore. Due to open cast mining process, huge amount of tailings are generated and dumped as open landfill that leads to numerous environmental hazards in the vicinity. MMT from Salem mine dump site, India, is collected, and a series of laboratory tests related to physical, chemical, mineralogical, mechanical, el ...
... Dams and other man‐made barriers impair upstream fish migration and thus threaten fish populations that need access to upper river reaches to complete their life cycle. For many years, fishways have been used to mitigate this impact. Fishways around the globe are typically built based on recommendations made for northern hemisphere species, particularly salmonids. These recommendations do not cons ...
... Considering the environmental issue due to waste oyster shells (WOS) dumped randomly and over-exploitation of river sand resources, a drive toward utilization of crushed WOS as substitution materials for fine aggregates mixed in concrete has been initiated. Waste oyster shells have been proved to have the potential to be recycled for use as construction materials. However, applying fine WOS aggreg ...