High Extraction Rate Research Articles

Geoclassification of fluoride‐affected areas of Lucknow, Uttar Pradesh, India

AbstractThe availability and quality of groundwater for drinking purpose is steadily decreasing due to influx of contaminants and high rate of extraction. Fluoride contamination in groundwater is posing serious threat to human health, being a reason of dental and skeletal fluorosis. The present study is aimed to assess the current status of fluoride in groundwater resources of Lucknow, Uttar Pradesh, India, and geoclassify the location on the scale of fluorosis threat. The study was conducted in eight blocks of Lucknow, targeting 190 spots. 82.11% of groundwater samples were found within the permissible limit, while 17.89% samples revealed fluoride concentration higher than the permissible limit (1.5 mg/L) prescribed by WHO in 2011. It was observed that around 81.47% population of Sarojininagar, 62.51% population of Kakori, 43.03% population of Mohanlalganj, 6.16% population of Gosaiganj, and 5.47% population of Chinhat are currently exposed to high fluoride concentration (> 1.5 mg/L) and prone to risk of adverse health effect posed by excess fluoride consumption. If the current scenario continues, the proportion of population vulnerable to fluoride toxicity may increase in the future.

Separation and purification of pyrroloquinoline quinone from Gluconobacter oxydans fermentation broth using supramolecular solvent complex extraction

In this paper, new supramolecular extractants, which contained surfactant, alkane and alkanol, were designed and used to separate PQQ. After a series of tests, the optimal extractant composition was determined as benzalkalonium (C8-C16) chloride (BC): n-hexane:n-pentanol, and the highest extraction rate could reach 98%. The extraction equilibrium could be reached in five minutes. The mechanism of the extraction selectivity was inferred as an ion-pair and π-π complexation interaction between PQQ and BC, which was indicated by UV and fluorescence quenching experiments. To recycle the organic extractant, the extract was back-extracted with sodium chloride solution. After extraction, back extraction and crystallization, an isolated product with a purity of 97.5% was obtained from G. oxydans fermentation broth. The product was identified as PQQ by HPLC analysis and MS. Above all, the present research developed a simple and efficient method for the separation of PQQ from fermentation broth.

Development of a pretreatment method based on Fenton-like reaction combined with hydrodynamic cavitation for lipid extraction from wet microalgae

Microalgal biorefineries, a green alternative to traditional refineries, require integrated processes and are economically viable, for the much-anticipated commercialization of microalgae-derived products. This study demonstrated that cell disruption for lipid extraction could be effectively performed using wet microalgae harvested with ferric chloride by combining a Fenton-like reaction with hydrodynamic cavitation (HC). HC boosted the already powerful Fenton-like reaction even further through cavitation and its resultant increases in temperature and mixing intensity. The extraction efficiencies for lipids and chlorophyll increased from 43.1% to 77.4%, and from 22.4% to 97.2%, respectively, and depended on the pH and hydrogen peroxide concentration. Statistical analysis showed that not only mild but also optimum condition suitable for both lipid extraction and chlorophyll removal was 0.79% hydrogen peroxide at pH 3.41; under these conditions, the simulated lipid yield was estimated to be 70.4% with 82.8% chlorophyll removal. Despite the advantages of process integration and high lipid extraction rates, the extracted lipids appeared highly viscous and substantially stickier than the products of conventional methods, likely due to the presence of residual iron particles. In conclusion, the Fenton-HC reaction offers a workable alternative for lipid extraction from wet microalgae, particularly when microalgae are harvested by ferric chloride-based flocculation.

Rate compatible reconciliation for continuous-variable quantum key distribution using Raptor-like LDPC codes

In the practical continuous-variable quantum key distribution (CV-QKD) system, the postprocessing process, particularly the error correction part, significantly impacts the system performance. Multi-edge type low-density parity-check (MET-LDPC) codes are suitable for CV-QKD systems because of their Shannon-limit-approaching performance at a low signal-to-noise ratio (SNR). However, the process of designing a low-rate MET-LDPC code with good performance is extremely complicated. Thus, we introduce Raptor-like LDPC (RL-LDPC) codes into the CV-QKD system, exhibiting both the rate compatible property of the Raptor code and capacity-approaching performance of MET-LDPC codes. Moreover, this technique can significantly reduce the cost of constructing a new matrix. We design the RL-LDPC matrix with a code rate of 0.02 and easily and effectively adjust this rate from 0.016 to 0.034. Simulation results show that we can achieve more than 98% reconciliation efficiency in a range of code rate variation using only one RL-LDPC code that can support high-speed decoding with an SNR less than -16.45 dB. This code allows the system to maintain a high key extraction rate under various SNRs, paving the way for practical applications of CV-QKD systems with different transmission distances.

Identifying of Production Facilities (Reservoirs) at Multilayer Oil and Gas Condensate Fields in the Yamal-Nenets Autonomous Okrug

The accumulated experience in the development of the multilayer oil and gas fields is sometimes evidenced by the inaccuracy of decisions in the area of identifying the production facilities used at the initial stages of development, when the amount of initial information necessary for design is very limited. A high degree of knowledge is typical for the drilled fields, when decisions regarding the identifying of production facilities are already taken and only their correction is possible. At the initial stages, the practice of combining a significant number of reservoirs into a single production facility has been often applied, which has led to the insufficiently complete production of the individual productive intervals, reducing the efficiency of the hydrocarbon extraction from the subsoil of the Earth. The paper presents a scheme for the identifying of the production facilities at the multilayer Yuzhno-Russkoye and Beregovoye oil and gas condensate fields, which consists of a stepwise analysis of each of the criteria for the possibility of combining the reservoirs into a single development facility presented in the paper. Decisions on the identifying of the production facilities according to the proposed algorithm were tested and entered into the feasibility study of the oil recovery factors at the mentioned fields. The proposed solutions make it possible not only to achieve high hydrocarbon extraction rates, but also to avoid a decrease in the economic efficiency in the late stages of the field development, caused by the need to drill an additional well stock when disconnecting the erroneously combined reservoirs at the initial stage.

Thermal strengthening of low‐expansion glasses and thin‐walled glass products by ultra‐fast heat extraction

AbstractThermal strengthening remains the primary method for enhancing the practical strength of commodity glass products, however, the process is limited in terms of applicable glass thickness and coefficient of thermal expansion. The primary reasons for this limitation are the achievable heat transfer coefficient when using conventional gas cooling, and the occurrence of transient surface tension in the early stages of rapid quenching. We revisit this problem for the case of thin borosilicate glass sheet. Using liquid gallium as the cooling medium, ultra‐fast heat extraction is achieved, with a heat transfer coefficient exceeding 5000 Wm−2 K−1. The low vapor pressure of gallium even at high temperatures enables preheating to a wide range of sheet entrant temperatures. We demonstrate thermal strengthening of low‐expansion borosilicate glass with persistent surface compression of up to 85 MPa, and quenching to a fictive temperature of ~190 K above the glass transition temperature. Glass sheet obtained in this way exhibits notably enhanced surface defect resistance to sharp indentation. In addition to thermal strengthening, the extraordinarily high heat extraction rates achieved by liquid metal immersion enable exploitation of high‐Tf glass properties beyond small and thin sample geometry.

Extraction of alumina from aluminum dross by a non-hazardous alkaline sintering process: Dissolution kinetics of alumina and silica from calcined materials

The aluminum dross (AD), which causes numerous problems of its management and disposal to environment is a useful resource to extract alumina. This study explains a novel process to extract highly pure alumina (Al2O3) from AD at a high extraction rate without producing the residues and exhaust gases. An experimental set up was designed to perform the grinding of AD for the decomposition of aluminum nitride (AlN) and the removal of salts. Thereby, the desalted dross was used to detect the optimum alkaline (NaOH) calcination parameters and leaching conditions, as well as the dissolution kinetics of alumina and silica. The leaching residues were used to produce Ettringite mineral with calcium-based compounds (including CaO and CaSO4) to avoid the problems of solid waste disposal from the leaching process. Moreover, to purify the alumina, slightly soluble CaSO4 was added in leaching solution to precipitate silicate and the optimum additive/solution ratio (g/mL) was determined. The aluminum hydroxide (Al(OH)3), precipitated after the carbonization was calcinated at 900.0°C for 2h to produce γ-alumina. The morphological and mineralogical characterizations of AD, γ-Al2O3 and the synthesized Ettringite mineral were studied by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM) and X-ray fluorescence (XRF). It was observed that activation temperature of 1000.0°C, Na2O/Al2O3 molar ratio of 1.4, leaching temperature of 60.0°C, leaching time of 40.0min, and the leaching liquid/solid ratio (mL/g) of 25/1 were the optimal parameter conditions to extract alumina with the extraction rate at 86.7% and purity of more than 98%. The results of leaching kinetics' study showed that the dissolution of alumina and silica were both controlled by layer diffusion process with the apparent activation energy of 11.4010kJ·mol-1 and 2.0556kJ·mol-1, respectively.

Assessment of seasonal variation of saltwater intrusion using integrated geophysical and hydrochemical methods in some selected part of Ogun Waterside, Southwest, Nigeria

This study presents the seasonal variation of saltwater intrusion in Ogun Waterside using a combine electrical resistivity tomography (ERT) and groundwater physicochemical analysis. The ERT survey was completed with 22 profiles using dipole–dipole array method covering seven major communities (Imakun-omi, Irokun, Isekun, Ode-omi, Iwopin, Itebu-elero, and Ayila) east of Lagos. The field survey was carried out between August 2016 and March 2017 with a minimum electrode spacing of 2.5 m. The inverted model generally revealed a resistivity range of 1.0 Ωm–100,000 Ωm delineated through a depth range of 37 m–197 m. The model obtained for Imakun-omi, Irokun, Isekun, and Ode-omi revealed significant impact of saltwater intrusion from nearby lagoon, sea, or creeks indicated as low-resistivity structures generally below 20 Ωm. The intrusion is more pronounced during the dry season due to decrease in groundwater level associated with low precipitation and possibly aggravated by high rate of groundwater extraction. Groundwater physicochemical analysis obtained in the study area revealed a general increase in the ionic concentrations with a corresponding increase in the water quality index (WQI) during dry season. The calculated WQI for the wet and dry seasons revealed good-to-excellent water quality in most samples taken in the study area except for samples taken in the southern part which were found within the poor-to-very poor water quality category. Evidence from the physicochemical analysis of groundwater samples corroborates the ERT result viz-a-viz the aquifer contamination status of Imakun-omi, Irokun, Isekun, and Ode-omi.

Effect of Flour Extraction Rate on the Sensory Evaluation of Iraqi Flatbread

Background: Increasing cereal fiber consumption is a trend worldwide nowadays because of the health benefits of fiber. Increasing the flour extraction rate is a way to increase fiber consumption. Methods: Three high extraction rate flours were produced (80%, 85%, and 92%) to make Iraqi flatbread. The produced flour was obtained from a big scale technical mill (10 tons/h, Altaji mill) by changing roll adjustment or merging bran output with the flour from the production line. The bread samples were evaluated for sensory acceptability using 9-points hedonic scale for palatability, flavor, and freshness, and using the just-about-right scale for color and texture attributes for three sequencing days. Results: Significant differences for palatability, color, and flavor attributes between slices of bread produced from 80% and 92% extraction rates flours were observed. There were no significant differences between the treatments for other attributes for the first day. On the second day, there were significant differences in color attribute between 92% extraction rate flour and other treatments. While the third day, there were no significant differences between the treatments for all attributes. The results also indicated that there were no significant differences in the studied attributes within the same treatment on different days. Conclusion: Iraqi consumers preferred bread prepared from lower extraction rates compared to higher, and it is mostly because of the color factor.

Influence of extraction time, solvent and wood specie on experimentally aged spirits – A simple tool to differentiate wood species used in cooperage

Type of the wood used for the aging highly influences the quality of alcoholic beverages. In this research we explored the potential of cyclic voltammetry (CV) and differential pulse voltammetry (DPV) to establish fingerprints characteristic for each wood and to enable determining the type of the wood used in the aging process. Eleven different wood samples were used to prepare three different types of spirits during 15 months. The highest extraction rate was obtained during the first month, while further aging was followed with almost constant amount of extracted polyphenols. Black locust, myrobalan plum, and mulberry extracts were discriminated from the spirits aged in oak and wild cherry wood when statistical analysis was applied. Although clear classification of all samples was not achieved, this long term study demonstrated a potential of both CV and DPV for differentiating wood species used in the aging, hence in the quality control of spirits.

Recovery of boron from unacidified salt lake brine by solvent extraction with 2,2,4-trimethyl-1,3-pentanediol

In this work, the extraction of boron from salt lake (SL) brine using 2,2,4-trimethyl-1,3-pentanediol (TMPD) was investigated. Factors affecting boron recovery during the solvent extraction process, including feed pH, concentrations of extractant and H3BO3, phase ratio of organic to brine (O/A), and temperature, were investigated. Increasing feed pH initially resulted in a high boron extraction rate, but there was a limitation, as further increasing feed pH resulted in rapid formation of B[OH]4− having a low capacity to complex with TMPD, and therefore lower boron extraction. Boron recovery increased as the TMPD concentration and O/A increased. Salting-out effect experiment indicated that the addition of magnesium chloride showed two opposite effects on boron extraction. The combination of pH <7, O/A = 1 & TMPD/H3BO3 molar ratio = 2:1 was ideal for boron recovery, resulting in single-stage boron extraction efficiency of >85% and three-stage of 99.79%. To investigate the extraction mechanism, the slope ratio method was combined with Raman spectroscopy and infrared spectroscopy to characterize the structure of TMPD and boron complex in organic extraction solvent. Furthermore, under the optimal conditions, a three-stage extraction and two-stage stripping process was performed, resulting the extraction and stripping efficiency of boron were 97.12% and 88.98%, respectively. The results of the study reveal a promising strategy of boron recovery from SL brine without acidification.

Effect of Automatic Extraction Accuracy by Different Image Reconstruction Methods Using a Three-dimensional Image Analysis System for Pulmonary Segmentectomy Preoperative CT Angiography

This study aimed to determine the optimal image reconstruction method for preoperative computed tomography (CT) angiography for pulmonary segmentectomy. This study enrolled 20 patients who underwent contrast-enhanced CT examination for pulmonary segmentectomy. The optimal image reconstruction algorithm among four different reconstruction algorithms (filtered back projection, hybrid iterative reconstruction, model- based iterative reconstruction, and deep learning reconstruction [DLR]) was investigated by assessing the CT numbers, vessel extraction ratios, and misclassification ratios. The vessel extraction ratios for main and subsegment branches reconstructed using DLR were significantly higher than those using other reconstruction algorithms (96.7% and 90.8% for pulmonary artery and vein, respectively). The misclassification ratios at the right upper lobe pulmonary vessels (V1 and V2) were especially high because they were close to the superior vena cava, and their CT numbers were similar in all four reconstructions. In conclusion, the DLR allows a high extraction rate of pulmonary blood vessels and a low misclassification rate of automatic extraction.

Modeling the Kinetics of Potassium Diffusion in Estima Potato under Different Leaching Conditions.

The diffusion of potassium in potato (Solanum tuberosum) at different leaching conditions was investigated. Two modes of pretreatment of potato samples (cubes and spheres) by preheating to 80°C and leaching at temperatures of 20-80°C were performed using a temperature- and agitation-controlled batch extractor. A Fickian model incorporating the effective diffusion coefficient (Deff), partition coefficient (K) between the solute concentration in the potato and medium, and mass transfer coefficient (kl) was developed to simulate and predict the fraction of potassium leached from the potato at any temperature. Results showed significant reduction in activation energies from 92 to 25.02 kJ/mol for cubes and from 75.02 to 13.40 kJ/mol for spheres culminating in higher extraction rates when samples were preheated to 80°C. The Deff, K, and kl values obtained were in the range of 0.02 − 7.33 × 10−9 m2/s, 0.63 − 8.00 × 10−2, and 0.01333.00 × 10−4 m/s, respectively. The kinetic parameters showed a change in slope or discontinuity in the gelatinization temperature range as a function of temperature, an indication of a change in the diffusional matrix. The optimum operating conditions were 80°C preheating and leaching at temperatures up to 50°C. The proposed mathematical model offered a satisfactory description of both dynamic and equilibrium mass transfers of potassium by adequately predicting the fraction of potassium from potato cubes and spheres. The present findings could be useful in the pretreatment of potato for renal patients.

Extraction kinetic of some phenolic compounds during Cabernet Sauvignon alcoholic fermentation and antioxidant properties of derived wines

In this study, we estimated the usage of Cabernet Sauvignon in microvinifications, obtaining wines with increased phenolic compound content. Kinetic extraction of phenolic compounds during alcoholic fermentation was affected by maceration time (3, 5, 7, 14 and 21 days) and the addition and kinetics of enzyme preparations (EP). The highest extraction rates were observed for catechin (EXV EP – EXV enzyme preparation and CP EP – Color plus enzyme preparation) and p-hydroxybenzoic acid (Car EP - Caractere enzyme preparation). According to extraction time of the analyzed phenolic compounds, maximal values (ellagic acid, ferulic acid, chlorogenic acid, caffeic acid, naringenin, p-hydroxybenzoic acid, p-coumaric acid, protocatechuic acid, trans-resveratrol, syringic acid, vanillin, and vanillic acid) were obtained on day 15 of maceration with addition of CP EP, with exceptions of gallic acid, catechin, and myricetin. Prolonged maceration times, up to 21 days, showed the most potent DPPH free radical scavenging activity with Car EP and the highest Ferric Reducing Ability of Plasma (FRAP) values with CP EP.

Biliary cast syndrome after liver transplantation: A cholangiographic evolution study.

The aim of this study is to describe the cholangiographic features and endoscopic management of biliary cast syndrome (BCS), a rare specific ischemic cholangiopathy following liver transplantation. Patients with biliary complications were identified from prospectively collected database records of patients who underwent liver transplantation at the Erasme Hospital from January 2005 to December 2014. After excluding patients with hepatico-jejunostomy or no suspicion of stricture, cholangiograms obtained during endoscopic retrograde cholangiopancreatography (ERCP) and magnetic resonance imaging were systematically reviewed. Biliary complications were categorized as anastomotic (AS) and non-AS strictures, and patients with BCS were identified. Clinical, radiological, and endoscopic data were reviewed. Out of 311 liver transplantations, 14 cases were identified with BCS (4.5%) and treated with ERCP. Intraductal hyperintense signal on T1-weighted magnetic resonance and a "duct-in-a-duct" image were the most frequent features of BCS on magnetic resonance imaging. On initial ERCP, 57% of patients had no stricture. Complete cast extraction was achieved in 12/14, and one of these had cast recurrence. On follow-up, 85% of the patients developed biliary strictures that were treated with multiple plastic stents reaching 60% complete stricture resolution, but 40% of them had recurrence. After a median follow-up of 58months, BCS patients had lower overall and graft survival (42.9% and 42.9%) compared with non-AS (68.8% and 56.3%) and AS (83.3% and 80.6%), respectively. Particular magnetic resonance-cholangiographic and ERCP-cholangiographic features of BCS have been identified. Outcomes for BCS are characterized by high complete cast extraction rates, high incidence of secondary strictures, and poorer prognosis.

Conservation Outcomes of Collaborative Forest Management in a Medium Altitude Semideciduous Forest in Mid-western Uganda

ABSTRACT Globally, community involvement in forest management has been hailed as an effective strategy to achieve both conservation and livelihoods improvement goals. In Uganda, Collaborative Forest Management (CFM) has been promoted to enable registered local community groups to co-manage specified areas of state forests with state agencies. However, there is paucity of empirical research evidence on conservation outcomes that are attributable to CFM. To fill this gap, this study used forest inventory data collected in compartments under different forest management regimes (CFM, inactive-CFM, and non-CFM) in 2003 and 2016 to assess spatial and temporal changes in forest structural attributes in a semideciduous forest in mid-western Uganda. Our ordination results show significant changes in tree communities in the non-CFM compartment. The CFM compartment registered a net increase in basal area. We attribute these changes to the high rate of illegal timber extraction and charcoal processing, with signs of the latter only recorded in the inactive- and non-CFM compartments. Illegal timber extraction was perpetuated by powerful outsiders while charcoal processing was dominated by local area residents for cash income. Deliberate management interventions should be instituted to curb illegal human activities and enhance regeneration and recruitment of target tree species in the forest.

Kinetics of organic compound adsorption on carbon sorbents

Adsorption of trichlorethylene from aqueous solutions by activated carbons of various grades was studied previously under static conditions [6]. We carried out a comprehensive study of the trichlorethylene adsorption process in the presence of chloroform by carbon sorbents, including the study of equilibrium, kinetics, and adsorption process dynamics in order to create an adsorption technology for purifying natural waters from organic compounds. The aim of the study was to establish the mass transfer mechanism and obtaining the mass transfer coefficients required for engineering calculations, using various models that describe the kinetics of sorption extraction. The kinetic parameters of sorption process are influenced by various factors, including specific surface area, carbon sorbents’ structure, and conditions for the transfer of adsorbed substance molecules to the grain surface of adsorbent. So, as a result, calculated coefficients of external mass transfer allow us to expect a high rate of the component extraction from the water to be purified by filtering through a a fixed sorbent layer of the AC grades: SCLF-515, AG-WV-1, PPS, Purolat-standard.

Morphotype divergence and genetic diversity of Hedeoma piperita Benth. in western Mexico.

Hedeoma piperita Benth. is a perennial herb from the Lamiaceae family, which is highly valued for its medicinal and culinary properties by the Purépecha ethnic group in Michoacán, Mexico. The species presents populations of two morphotypes (white and purple corollas) that have not been formally studied. In this work, we aimed to evaluate the morphological and genetic variation between the two morphotypes. We sampled individuals from 15 populations within the Purépecha Plateau in western Mexico to measure 33 quantitative and qualitative morphological variable characters (vegetative and reproductive) and to estimate genetic diversity and structure using six nuclear microsatellite markers. Principal Component Analysis showed a clear separation between populations of the two morphotypes, which differences were statistically significant for all vegetative (n = 11) and reproductive (n = 22) characters. Similarly, Bayesian and multivariate cluster analyses based on the microsatellite data supported the distinction of the two morphotypes, except for one population of the white corolla that was genetically closer to the purple corolla group. Genetic diversity was moderate to low across populations of the two morphotypes, and inbreeding (FIS) was significantly higher in populations of the purple corolla. Our morphological and genetic data support the presence of two divergent morphotypes in H. piperita. This species is of high importance within the Purépecha culture, but unfortunately is declining in the region due to its high extraction rates. Thus,our results are valuable to delineate germplasm zones for future breeding programs and for informing in situ conservation strategies.

Eco-friendly and economical extraction of gold from a refractory gold ore in iodide solution using persulfate as the oxidant

Iodine–iodide leaching is an effective and environmentally friendly gold extraction method that is expected to replace cyanidation. However, as the price of iodine is relatively high, for the industrial application of iodine–iodide leaching, decreasing the required amount of iodine is important to reduce production costs. In this study, persulfate was used to replace iodine as the oxidant for the extraction of gold from refractory gold ore. Using single-factor tests, the optimal leaching conditions were determined as a solid–liquid ratio of 1:3, a stirring speed of 350 rpm, 0.02 mol/L ammonium persulfate, and 0.1 mol/L potassium iodide. At pH 5, the gold extraction rate reached 83.69% after stirring for 1.5 h at room temperature. Even under neutral conditions, a gold extraction rate of more than 80% could be achieved. Using the activated carbon adsorption method to recover the gold from the leaching solution, a high gold recovery rate was obtained without solid–liquid separation. Compared with cyanidation, the S2O82− – I− – H2O system has the advantages of nontoxicity, eco-friendly, a fast leaching speed, and a high gold extraction rate. Thus, this system was a promising alternative method for gold extraction from refractory ore.

Evolution assessment of structurally-controlled differential subsidence using SBAS and PS interferometry in an emblematic case in Central Mexico

ABSTRACT The city of Morelia has been affected by Structurally-Controlled Differential Subsidence (SCDS) since at least 1983, modifying civil structures and infrastructure through the appearance of ground failures and differential ground subsidence. The resulting damage to streets, homes, hydraulic lines, and government facilities has caused economic losses worth millions of dollars. An increase in population has led to the overexploitation of groundwater, which is the main trigger for SCDS, while the subsoil's geology and bedrock configuration are considered conditioning factors of this phenomenon. This paper offers an analysis of the SCDS evolution over the last fourteen years and its relationship with groundwater extraction and thickness of unconsolidated sediments. The former was carried out through SAR Interferometry techniques to detect and monitor land subsidence, using Small Baseline Subset (SBAS) from 2003 to 2010 and Persistent Scatterer Interferometry (PSI) from 2014 to 2017. Additionally, groundwater pumping well data and lithological information from boreholes enabled a spatial analysis to evaluate the role of these factors in the development and acceleration of SCDS. The SBAS results show maximum sinking rates of 2.2 cm/yr. with a spatial distribution that is clearly controlled by buried geological structures. In this period, the maximum sinking rates were induced by high groundwater extraction rates in focused areas, while intermediate rates were linked to notable depletion cones. The PSI results indicate a maximum sinking rate of 2.74 cm/yr. and an accelerated subsidence migration to the west, owing to the construction of new wells and persistent high groundwater extraction rates. For both periods, the larger compressible sediment package reveals a good correlation with high subsidence rates, mainly in the hanging wall blocks of the buried faults. The identification of differential subsidence accompanied by high sinking rates in novel areas of Morelia, as well as the detection of the subsidence migration, will provide scientific support to decision-makers for the proposal of engineering solutions and urban planning capable of reducing hydrogeological hazards associated with SCDS.