Conventional Packing Research Articles

Study on Viability of Fungal Bioagents in Vacuum Packing Compared with Conventional Packing in different Storage Conditions

The shelf life and viability of the bioagents are influenced by several factors, including the type of nutrients in the formulation, moisture content and the ability of propagules to withstand adverse climatic conditions. There are numerous commercial formulations of Trichoderma species primarily used to combat soil-borne diseases. The present study was conducted to understand the optimal storage conditions suitable for these bioagents. By this study, where the viability in vacuum packing and conventional packing were compared, it was observed that the vacuum packing did not offer any advantages over conventional packing methods. Additionally, storing the bioagents in a refrigerator at 4 °C was more effective compared to other storage conditions, such as room temperature (27 ± 2 °C), incubator (24 ± 2 °C) and deep freezer (-20 °C).

Examining a New Laboratory Method for Packing Soilless Substrate to Ensure Consistent, Appropriate Bulk Density When Measuring Static Physical Properties

Bulk density (Db) and subsequent physical properties are determined by the substrate and packing method. Packing method is the way one fills and compresses a substrate within a given volume. Bulk density produced in the laboratory may not align with “expected” published ranges due to variations in packing. Additionally, it is unknown if ranges identified as “typical” using a small volume sample ring reflect Db occurring in larger production size containers packed using commercial potting practices. Therefore, our objectives were to 1) emulate nursery practices and document the Db associated with a potted 2.8-L (#1) container, 2) develop and test the new “shim and compression” method to determine if it consistently packs sample rings to a Db commensurate with that of a 2.8-L nursery container, and 3) demonstrate how static physical properties are affected by the new “shim and compression” sample ring packing method compared with the traditional bench top tap method. When emulating nursery potting practices with 100% pine bark, coir, and peat, and blends of each, Db ranged from 0.08 g⋅cm−3 (coconut coir) to 0.17 g⋅cm−3 (pine bark). We used an espresso tamp and shims to pack the aforementioned substrates in sample rings. The Db achieved using a range in number of presses and discs was largely dependent on the substrate, but the desired Db was consistently achieved for each substrate. There was no effect of disc number on Db (P = 1.000) for any substrate. There was no effect of tamp number (P ≥ 0.0602) for all substrates except peat-amended, for which five tamps yielded a greater Db than one tamp (P = 0.0324). In an experiment in which a different technician who was accustomed to the conventional benchtop tap packing method performed both methods, method influenced Db (P < 0.0001), and the conventional method more closely attained the target Db. To our knowledge, this is the only report of Db observed in commercial container production facilities (i.e., “native”).

Clinical, radiographic and biochemical assessment of proximal cavities restored with composite resin using incremental vs. bulk packing techniques: One-year randomized clinical trial

BackgroundBulk-fill resin composites may suffer from recurrent caries around compound proximal restorations in posterior teeth, especially at the proximo-gingival interface.Over 12 months, will the bulk fill technique affect the caries recurrence rate at gingival margins when compared to the conventional incremental packing technique? How early will the first clinical, radiographical, and biochemical evidence of caries recurrence occur?MethodsAfter randomization, in 30 patients with two compound (OM or OD) supragingival lesions, one tooth was restored using the bulk fill technique on one side (group 1) (n = 15). In contrast, the other tooth on the other side was restored utilizing the incremental layering technique (group 2) (n = 15). Both teeth received restorative material (X-tra fil, Voco, Cuxhaven, Germany). The FDI criteria were used to evaluate restorations. As for the periodontal assessment, the gingival index, plaque index, papillary bleeding scoring index and periodontal pocket depth were evaluated. The gingival crevicular fluid (GCF) specimens were gathered, and MMP-9 was extracted and quantitated by ELISA. A customized radiographic template was designed, and 3D printed digital bitewing radiographs were taken. Assessments were done clinically, radiographically and biochemically at baseline (1 week) and after 3, 6 and 12 months. Data was statistically analyzed.ResultsThe null hypothesis was accepted clinically; no statistically significant differences appeared between bulk and incrementally filled posterior restorations. As for the radiographic assessment, the null hypothesis was accepted except for increased periodontal ligament width at 3 months. The null hypothesis for the biochemical evaluation was rejected as there were significant changes in levels of MMP-9 at different testing times.Conclusions1. With similar results but less sensitivity and significant time saving, the bulk fill technique can be considered an efficient alternative to the incremental fill technique in restoring proximal cavities. 2. Early evidence of caries recurrence can be correlated to an increase in the MMP-9 level in gingival crevicular fluid, followed by an increase in radiographic periodontal ligament width measurement.Trial registrationAn ethical approval from the Research Ethics Committee at the Faculty of Dentistry, October 6 University, (Approval No. RECO6U/5-2022). The study was registered at the Pan African Clinical Trials Registry on 24/07/2023 with an identification number (PACTR202307573531455).

Characterization of the Physical, Mechanical, and Morphological Properties of Films Generated from Cassava Pomace

The pollution of the environment caused by conventional packing materials such as plastic has driven the need for biodegradable alternatives. Although starch is an important component in the development of such materials, starch is not suited for use as a biodegradable packaging material due to global hunger challenges. The current study successfully utilized the major industrial waste of the cassava starch processing industry to develop biodegradable films. Three packaging materials were developed using the casting procedure, which involved combining various quantities of cassava pomace (CP) and plasticizer combinations. The developed films were analyzed to evaluate their characteristics, such as color, thickness, density, moisture content, solubility, swelling index, mechanical properties, microscopic, and FT-IR characteristics. In contrast, concerning multiple aspects, each of the films demonstrated unique characteristics. The film with the lowest CP (C1) appeared to be thinner and lighter in color; however, it tended to contain a greater amount of moisture. The C1 film exhibited an adhesive property that was wellsuited for use as cling film. The intermediate CP film (C2) stands out because of its excellent mechanical characteristics, including high tensile strength and elongation at break. These attributes make it particularly well-suited for packaging applications, such as the production of biodegradable bags. Conversely, the swelling index and thickness of the highest CP film (C3) outperform both other films, suggesting that it may have the capacity to absorb higher moisture content. The scanning electron microscopic images revealed a uniform surface for all three samples. However, the cross-sectional images of C3 indicated internal cracks that were consistent with the lowest mechanical characteristics and flexibility. Therefore, the C3 film is more suitable for packaging items like plates. These films can serve as a viable, environmentally friendly, and biodegradable alternative to conventional packaging materials. Keywords: Mechanical properties, cassava pomace, physical properties, biodegradable films, micro-structure properties

Silicon Nasal Splints v/s Conventional Nasal Packing: A Comparative Study to Assess Post Operative Outcome After Septoplasty

Silicon Nasal Splints v/s Conventional Nasal Packing: A Comparative Study to Assess Post Operative Outcome After Septoplasty

Oleic acid decorated kraft lignin as a hydrophobic and functional filler of cellulose acetate films

The packaging industry has primarily been dominated by single-use, petrochemical-sourced plastic materials despite their short-term use. Their leakage into the ecosystem after their use poses substantial environmental concerns. As a result, compostable and renewable packaging material alternatives are garnering significant attention. Cellulose acetate is a derivative of cellulose that exhibits excellent tensile properties, transparency, melt processability, and intermediate compostability. However, its application in the food packaging industry is limited due to its hygroscopic behavior and lack of dimensional stability. This study investigated using lignin (pristine and esterified) as a functional additive of cellulose acetate. The effect of varying concentrations of pristine kraft and oleic acid functionalized lignin in the cellulose acetate matrix and its effect on the resulting film's mechanical, morphological, viscoelastic, and water barrier properties were explored. Comprehensive characterization of the thermomechanical processed lignin-cellulose acetate sheets revealed reduced moisture absorption, improved UV and moisture barrier, and enhanced tensile properties with melt processability. Overall, the studied films could have appealing properties for food and other packaging applications, thus, serving as eco-friendly and sustainable alternatives to conventional petroleum-derived packing materials.

Comparison of BPL™ Video Laryngoscope and Macintosh Laryngoscope Guided Throat Packing for Head and Neck Surgeries: A Randomised Controlled Study

Introduction: Evidence regarding throat packing for head and neck surgeries is limited. A video laryngoscope, an airway adjunct used for various diagnostic and therapeutic purposes, can also effectively pack the throat. Aim: To compare the Time Taken for Throat Packing (TTTP) using a non-channeled video laryngoscope BPL™ versus the conventional Macintosh larynogoscope direct laryngoscope. Materials and Methods: In this non-inferiority, randomised controlled, single-blind study, 72 patients undergoing head and neck surgeries requiring throat packing were recruited. The non-inferiority margin was set at 10 seconds between the two groups (n=36 each). Throat packing in Group-M and Group-V was performed using the Macintosh and video laryngoscopes with the assistance of Magill’s forceps. The TTTP was recorded from the blade insertion to complete blade removal. A one-sided two-sample unpaired t-test was used to test non-inferiority hypothesis considered in this study. Results: The mean age of patients in Group-M was 37.39 years and in Group-V was 33.65 years, with mean weights of 60.89 kg and 56.32 kg, respectively. The mean TTTP difference between Group-M and Group-V was found to be -12.6 seconds with a lower limit of the one-sided 95% Confidence Interval (CI) of −20.6s. The null hypothesis was accepted, concluding that video laryngoscope-guided throat packing took a longer duration. The ease of throat packing, haemodynamic stress response, and Postoperative Sore Throat (POST) were comparable between both groups. Conclusion: Video laryngoscope-guided throat packing is inferior to conventional Macintosh throat packing in terms of TTTP. However, it is equivocal regarding the ease of throat packing and the stress response induced. POST was the same whether throat packing was performed using a video laryngoscope or a Macintosh laryngoscope.

An effective routability-driven packing algorithm for large-scale heterogeneous FPGAs

With the growing complexity and scale of FPGA architectures, challenges posed by heterogeneity and routability have become more pronounced in FPGA packing. Conventional FPGA packing algorithms are seldom considered routability and may lead to unroutable results. This paper addresses these challenges by proposing an effective routability-driven packing algorithm tailored for large-scale heterogeneous FPGAs. The proposed algorithm consists of four major parts: (1) a LUT-FF pairing method is presented to pack LUTs and FFs into LUT-FF pairs. (2) A novel BLE packing method is presented to deal with the complex clock constraints, meanwhile forming more HCLB-friendly BLEs. (3) A congestion-aware HCLB packing technique is proposed to produce placement-friendly netlists without degrading routability. (4) An effective and accurate routing congestion estimation method is proposed to guide the packing process. Based on the ISPD 2017 clock-aware FPGA placement contest benchmarks, experimental results show that our algorithm outperforms three state-of-the-art FPGA placers by 9.8%, 8.2%, and 3.4% on routed wirelength, respectively.

Heteropoly acid supported on hierarchical Y zeolite decorated SiC foam as the structured catalytic packing for reactive distillation synthesis of ethyl lactate

Rational design of catalytic packing is crucial in developing reactive distillation (RD) processes as efficient in-situ coupling of reaction and separation is required. Structured catalytic packings are advantageous than the conventional packings (e.g., inert packing + catalyst ‘tea bags’), due to the integration of the catalysis and separation function in one unit, mitigating mass/heat transfer limits. Herein, we present one of the latest developments in the field of structured catalytic packings, which was applied to a pilot-scale RD process of ethyl lactate (EL) synthesis via acid-catalyzed esterification and showed the advantages. The tungstophosphoric acid and hierarchical Y zeolite were uniformly decorated on corrugated silicon carbide (SiC) foam sheets via new preparation method (of ultrasound-assisted impregnation and microwave-assisted drying). The activity of the resulting materials was first assessed in a batch reactor, then the best candidate was employed by the pilot process. Findings from the pilot-scale RD experiments show that the developed structured SiC foam catalytic packing (SSFCP) exhibited an excellent performance (with the normalized conversion of 0.155 mol/gcatalyst), outperforming the conventional seepage catalytic packing internal (0.002 mol/gcatalyst). The influence of various variables (including molar feed ratio, feed position and reflux ratio) on the process performance of the pilot RD rig was also investigated and optimized, achieving a lactic acid conversion of 46.9 % and EL purity of 44.9 % (bottom). The good performance was attributed to the improved mass transfer thanks to SiC foam corrugated sheet (which encourage the vortex formation), thereby enabling more efficient coupling with the reaction. The SSFCP demonstrated reasonable stability, making it a promising candidate for relevant practical RD applications.

Research on heat and mass transfer characteristics of a counterflow wet cooling tower using a new type of straight wave packing

In this paper, a new type of straight wave packing is developed for the purpose of improving the heat and mass transfer characteristics of counterflow wet cooling towers. Experimental studies and numerical simulations are carried out to explore the effects of inlet air velocity, water drenching density, gas-liquid ratio and packing height on the heat and mass transfer characteristics of cooling towers. According to research, the novel packing's cooling efficiency increased by 14.4% when compared to the conventional straight wave packing. This is a more substantial effect, and it offers a new plan for the cooling tower's heat transfer that can direct engineering practice. Combined with the analysis of the actual tower operating conditions, it is found that the higher the height of the packing, the easier it is to meet the cooling task, and the smaller the reasonable gas-liquid ratio and air volume required, the maximum air volume can be saved by 30%.

Epistaxis Treatment Options: Literature Review.

Epistaxis means bleeding from nostrils, nasal cavity or nasopharynx. To summarize the available epistaxis treatment options. Methods: 61 articles published in the last 20years were included. Duplicate records, irrelevant and inaccessible ones were excluded. Epistaxis can be treated with first aid measures such as external pressure and ice packing and applying topical agents, e.g. oxymetazoline that stops 65-75% of nosebleeds in A&E. Also, with electrocautery which is more effective and has fewer recurrences (14.5% vs. 35.1%) than chemical cauterization and applying tranexamic acid that promotes hemostasis in 78% of patients, versus 35% and 31% respectively in patients treated with oxymetazoline and nasal packing. Furthermore, nasal packing can be applied with non-absorbable materials, e.g. petroleum jelly, BIPP gauze, PVA nasal tampons (Merocel), Foley catheter, balloons (Rapid-Rhino), absorbable materials, e.g. nasal tampon (Nasopore), and with newer hemostatic materials which are more effective and with fewer complications, e.g. hemostatic gauzes (Surgicel), thrombin matrix (Floseal), gelatin sponge (Spongostan) and fibrin glue. Moreover, epistaxis can be achieved with endoscopic ligation of arteries, mainly SPA, which is more effective than conventional nasal packing (97% vs. 62%), and with endoscopic cauterizationwhich is more effective than ligation. Finally, for intractable cases embolization can be applied using gelatin sponge, foam, PVA and coils with 80% success rate and comparable efficacy and complications to surgical methods. Epistaxis can be dealt with various methods depending on patient's history and available resources. Newer hemostatic agents in combination with endoscopic methods have advantages over traditional methods.

Comparison of outcomes using conventional nasal pack with hydroxylated polyvinyl acetate pack following Septoplasty

Aim: To compare the conventional anterior nasal packing (CANP) with Hydroxylated polyvinyl acetate pack (Merocele) after septoplasty, in terms of pain, bleeding, and postoperative complications like synechia formation. Material and Methods: This study was a prospective, randomized, interventional study conducted among 48 patients. Patients underwent septoplasty under general anesthesia for symptomatic deviated nasal septum. In all the 48 patients, post-surgery, one nasal cavity was packed with a conventional nasal pack and the other cavity was packed with Merocele nasal pack. Pain and bleeding were evaluated during pack removal on the third post-operative day. Synechia was assessed at the 8th post-operative week (2 months) follow-up. The results were compared between the two groups. Result: Out of 48 patients who underwent surgery, 3 patients were lost to follow-up. So, results were compared between 45 patients. Pain and bleeding during removal of conventional and merocele packs were not seen to be statistically significant. Post-operative synechia was not seen in any of the nasal cavities, irrespective of the packing material used. Conclusion: Hence, in terms of pain, bleeding during pack removal, and post-operative synechia; conventional and merocele nasal packs were comparable and there was no significant difference in using either of the materials post-septoplasty.

Decomposition kinetics of sodium amalgam in fixed bed of WC‐coated tubular SS‐304 packing: Modelling and validation

AbstractErosion of graphite packing in continuously operating fixed bed sodium amalgam decomposers leads to performance degradation accompanied by clogging in the downstream process lines which not only increases the maintenance and catalyst refilling costs but also aggravates the risk of mercury vapour exposure. To overcome this drawback, the present work utilizes tubular SS‐304 packing coated with tungsten carbide (WC) on the outer surface. The coating is obtained using an indigenously developed laser‐directed energy deposition facility. Dedicated experimental setup is developed for each set of process parameters to comparatively study the fixed bed decomposition kinetics at steady state for three types of WC‐coated SS‐304 packing and a conventional spherical graphite packing. In parallel, a numerical 3D–1D model is implemented using open source computational solvers and is experimentally validated. The algorithm of this model is based on proposed drop–fill approach for WC‐coated SS‐304 packing and modified drop approach for spherical graphite packing, respectively. In terms of decomposition rates, the performance of WC‐coated SS‐304 packing surpasses that of spherical graphite packing at high amalgam flowrates; meanwhile, the average alteration in experimental steady‐state temperature profile after continuous operation of 2 years is around 2% for WC‐coated SS‐304 packing as compared to nearly 17% for spherical graphite packing.

Effect of Bilateral Nasal Packing on Systemic Blood Pressure in Patients Treated with Septoplasty

Aim: The primary aim of this research was to assess the impact of bilateral nasal packing on systolic blood pressure in individuals undergoing septoplasty. Study Design: Retrospective study. Place and Duration: This study was conducted at Hospital Dow International Medical College, Dow University of Health Sciences Karachi and Shahida Islam Medical College, Lodhran during in the period from March, 2022 to August, 2022. Methods:152 patients who had a clinically determined nasal septoplasty were included in this study. Patients in this ranged in age from 18 to 50. The patients were randomly split in two groups. Seventy-six patients were assigned to Group I, where no nasal packing was utilized, and Group II, where conventional anterior nasal packing was applied. One may say that there was a 50/50 split between the two groups. Before to and throughout septoplasty, all patients underwent round-the-clock ambulatory blood pressure monitoring. Statistical analysis was performed on all data using SPSS 24. Results: 90 (59.2%) of the 152 patients were male, and 62 (40.8%) of the patients were female. The patients which were under the age of 30 are 59(38.8 percent) of the total patients, 55 (36.2 percent) were between the ages of 31 and 40, and 38 (25 percent) were above the age of 40.50% of the patients are comprised of rural locale. Study participants in Group II were found to have higher mean blood pressure (p-Value 0.05) following septoplasty therapy than those in Group I (P-Value >0.05). Group II patients had bleeding, vestibulitis, and septal perforations as a result of their nasal packing procedure. Conclusion: The study determined that bilateral nasal packing was linked with the preferment in either systolic or diastolic blood pressure in individuals who had septoplasty treatment. There is no statistical significance change showed up with the patients who did not get nasal packing from the rest of the group. Keywords: Septoplasty, Bilateral Nasal Packing, systemic blood pressure

Preconcentration and Removal of Pb(II) Ions from Aqueous Solutions Using Graphene-Based Nanomaterials.

Direct determination of lead trace concentration in the presence of relatively complex matrices is often a problem. Thus, its preconcentration and separation are necessary in the analytical procedures. Graphene-based nanomaterials have attracted significant interest as potential adsorbents for Pb(II) preconcentration and removal due to their high specific surface area, exceptional porosities, numerous adsorption sites and functionalization ease. Particularly, incorporation of magnetic particles with graphene adsorbents offers an effective approach to overcome the separation problems after a lead enrichment step. This paper summarizes the developments in the applications of graphene-based adsorbents in conventional solid-phase extraction column packing and its alternative approaches in the past 5 years.

Planning Irregular Object Packing via Hierarchical Reinforcement Learning

Object packing by autonomous robots is an important challenge in warehouses and logistics industry. Most conventional data-driven packing planning approaches focus on regular cuboid packing, which are usually heuristic and limit the practical use in realistic applications with everyday objects. In this paper, we propose a deep hierarchical reinforcement learning approach to simultaneously plan packing sequence and placement for irregular object packing. Specifically, the top manager network infers packing sequence from six principal view heightmaps of all objects, and then the bottom worker network receives heightmaps of the next object to predict the placement position and orientation. The two networks are trained hierarchically in a self-supervised Q-Learning framework, where the rewards are provided by the packing results based on the top height, object volume and placement stability in the box. The framework repeats sequence and placement planning iteratively until all objects have been packed into the box or no space is remained for unpacked items. We compare our approach with existing robotic packing methods for irregular objects in a physics simulator. Experiments show that our approach can pack more objects with less time cost than the state-of-the-art packing methods of irregular objects. We also implement our packing plan with a robotic manipulator to show the generalization ability in the real world.

Investigation on catalytic distillation for ethyl acetate production with different catalytic packing structures

Here, the performances of tea-bag catalytic packing (TBP) and supported catalytic packing (SCP) in the reaction distillation of ethyl acetate were designed and compared. There are significant differences in the distribution of efficiency factor and reaction rate between them. The results can provide a theoretical reference for the design of reactive distillation. The catalytic packing is the core component of the catalytic distillation, and how the catalyst exists in the packing has significant influence on the process. To investigate the effect of catalyst packings on the catalytic distillation process, the classical ethyl acetate reactive distillation system was utilized, and a supported catalytic packing (SCP) was prepared in comparison with the conventional tea-bag catalytic packing (TBP). Laboratory scale experiments showed that the ethyl acetate conversion of the SCP was superior to the TBP at a low catalyst loading. The effects of reaction kinetics, mass transfer performance and actual catalytic efficiency of the packings on this process were regarded as reasons and studied by combining the experiments and numerical simulation. Results suggested that the relatively immediate “ in-situ separation” caused by the rapid reaction kinetics and better mass transfer performance of SCP may be a main reason for the difference of the conversion.

3D printed triply periodic minimal surfaces as advanced structured packings for solvent-based CO2 capture

Advanced structured packing geometries fabricated with 3D printing were used for absorber CO2 capture with a liquid solvent. Compared to conventional packing, they had greatly enhanced (90–140%) effective surface areas and comparable hydrodynamics.

GSOR5 Presentation Time: 9:20 AM: Balloon Intravaginal Packing Reduces Rectal Dose and Toxicity in Brachytherapy for Cervical Cancer

<h3>Purpose</h3> To compare differences in normal tissue toxicity between conventional gauze vs. balloon intravaginal packing in women receiving brachytherapy for cervical cancer. <h3>Materials and Methods</h3> We retrospectively identified women with 2009 FIGO stage IB1-IVB cervical cancer who received definitive EBRT with cisplatin and T&O or T&R brachytherapy between 2010-2016 at our institution. The primary endpoints were rates of grade ≥2 vaginal, GU, and GI toxicity. Dose metrics were compared via the Mann-Whitney U test. Toxicity rates were estimated via the Kaplan-Meier method and compared via log-rank test, and factors associated with toxicity were identified with Cox regression analysis. <h3>Results</h3> 96 patients received brachytherapy with a median follow-up of 39 months. 32 patients received intravaginal gauze packing, while 64 patients received intravaginal balloon packing. Two balloon leakages occurred and were replaced with gauze packing for that fraction. Gauze packing was associated with significantly higher rectal D2cc vs. balloon packing (median 66 Gy gauze vs. 55 Gy balloon, p<0.01), but not with vaginal or bladder D2cc. As shown in the figure, on Kaplan-Meier analysis, gauze packing was also associated with higher rates of grade ≥2 vaginal toxicity vs. balloon packing (3-year rate 30.1% vs. 20.0%, p<0.05), GU (32.2% vs. 11.3%, p<0.05), and GI (42.3% vs. 18.4%, p<0.05) toxicity. Grade ≥3 vaginal (3-year rate 11.9% vs. 5.5%, p<0.05) and GI (21.0% vs. 4.8%, p<0.05) toxicity was also higher with gauze vs. balloon packing. On multivariate Cox regression analysis, gauze packing remained significantly associated with grade ≥2 vaginal toxicity (HR 5.15, 95% CI 1.41-18.85, p<0.05), but not with GU or GI toxicity. <h3>Conclusions</h3> Compared to conventional gauze packing, intravaginal packing balloons were associated with reduced rectal D2cc and late GI toxicity. Decreased rates of late vaginal and GU toxicity were also observed, though corresponding D2cc metrics were not significantly reduced.

Carbon dioxide capture in a HiGee reactor with packing featuring controllable cross-sectional area

A rotating packed bed (RPB), as one of the typical HiGee reactors, has achieved extensive praise in CO2 capture fields. In this work, the novel mesh packings with controllable cross-sectional areas (CSAs) were applied to intensify the CO2 absorption process in an RPB, as well as combining with the blended aqueous amine solutions including diethylenetriamine (DETA) and piperazine (PZ). The gas pressure drop and CO2 absorption performance of various packings were investigated. Different operating conditions including rotational speed (400–2400 r/min), liquid flow rate (10–35 L/h), gas flow rate (900–2400 L/h), and CO2 molar fraction in gas inlet (2–12%) were considered. The results exhibited that the rise in gas pressure drop of concentric packing with constant CSA (CONC-9) relative to conventional coiled packing with increasing CSA (COII-9) was less than 10% on average. Meanwhile, the CO2 absorption efficiency of CONC-9 exceeded 17.1% on average than that of COII-9. For further comparison, the ratio of mass transfer coefficient to gas pressure drop in the wet RPB (KGa/△PW) was analyzed. The KGa/△PW of CONC-9 was 48.6% larger on average than that of COII-9. The average mass transfer coefficient and height of mass transfer unit of CONC-9 reached up to 16.7 kmol∙kPa−1∙m−3∙h−1 and 0.013 m, respectively. Overall, it is a viable way to adopt the packing with constant CSA to intensify the CO2 absorption in RPBs.