Search Results - "Slurry."

ABSTRACT Livestock farming and its slurry management represent a significant contributor to global anthropogenic ammonia (NH3) and greenhouse gas (GHG) emissions, resulting in negative impacts on the environment. The aim of this study was to evaluate the effect of two microbial slurry additives (A1,...

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Coal gangue-based geopolymer aggregate slurry is an emerging green material with excellent stability and suitability for use as backfill in coal mine goafs. This approach not only addresses the remediation of coal mining subsidence areas but also resolves large-scale coal-based solid waste disposal....

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In the evaluation of concrete sustainability, what constitutes "sustainable" to one region may vary from another. This often leads to methodological forms of uncertainties that makes the evaluation process more complex. As such, this paper aims to quantify the effect of uncertainties in th...

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Understanding the rheological properties of fresh cement slurries is essential to maintain optimal pumpability, achieve dependable zonal isolation, and preserve long-term well integrity in oil and gas cementing operations and the 3D printing cement and concrete industry. However, accurately and effi...

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Anaerobic digesters fed with dairy cow slurry struggle to achieve economic viability, particularly when animals are housed seasonally, so additional feedstocks are usually required. This study applied experimentally derived data from the co-digestion of cow slurry (CS) and food waste (FW) to the UK...

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Jacking-pipe construction has the advantages of high mechanization, low environmental impact and fast construction speed. It is widely used in the project of underground pipeline under river. However, jacking-pipe grouting under shallow burial conditions is prone to cause surface bubbling problems....

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In order to promote ecological breeding and reasonable utilization of digested pig slurry from largescale biogas project, we designed 14 treatments (N1-N14) to explore the effects of biogas slurry application on agronomic trait, yield and forage quality of indica rice. The results showed that: 1) Th...

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To investigate the fire prevention and suppression characteristics of coal gangue slurry grouting in goafs and the enhanced regulatory mechanisms of additives, the slurry-forming performance of coal gangue slurry was tested. The effects of heating temperature, grouting thickness, and heating duratio...

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Purpose:To evaluate cauliflower (Brassica oleracea var botrytis) field performance in response to season, organic waste types, and rates; a cultivar (ATRIA 153F1) was grown for two years (2019 and 2020) under two different seasons (Rainy and Dry). This is to ascertain the effective season, type, and...

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This study presents the effect of PolyVinyl Alcohol Cement Fluid Loss Additive (PVA FLAC) on the API Filtration property of a cement slurry. In Cementing operations of oil wells, different type of fluid loss agents and chemicals are used based on the condition of the wells. PVA FLAC recently introdu...

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Aiming at the problems of large water-cement ratio and self-shrinkage of stone body in traditional cement-based grouting materials, the self-expanding cement-based grouting material was taken as the research object. Firstly, the comprehensive influence of expansion agent, water-reducing agent, retar...

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Finding new approaches to enhance the comprehensive effects of maize has been the persistent pursuit of scientific researchers. A three-year field experiment was conducted to elucidate the possible mechanisms or pathways of biogas slurry topdressing as replacement of chemical fertilizer (BSTR) affec...

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Purpose Parthenium hysterophorus is one among the most troublesome weeds at the global level. It is mainly controlled by chemical methods. The scientific community is in search of new but non-destructive approaches for its management. Vermicomposting is one among the promising technologies for the m...

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During a tunnelling construction with the application of slurry shield machine, the pipe blockage is generally regarded as a common technique problem in the slurry circulation system. In this paper, an experiment is conducted indoor with a large size slurry circulation system to observe the pickup m...

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Ammonia emissions are a worldwide major environmental concern. In 2017, ammonia emissions in the European part of Russia amounted to 80.9 thousand tons, of which up to 56.9 thousand tons came from agriculture. The main source of ammonia in this sector is the farm animal/poultry manure (slurry) utili...

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Blending and transporting bottom sludge from crude oil storage tanks with light oil is one of the primary disposal methods. However, as the blending concentration increases, the non-Newtonian characteristics of the mixture become more pronounced, and the multiphase flow behavior coupled with these r...

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