This study aims to investigate the adsorption behavior of a strong polyelectrolyte poly(styrenesulfonate) (PSS) onto alumina particles. Adsorption of PSS onto positively charged alumina surface increased with increasing ionic strength, indicating that non-electrostatic and electrostatic interaction controlled the adsorption. The removal of an emerging antibiotic ciprofloxacin (CFX) from water environment using PSS-modified alumina (PMA) was also studied. The removal of CFX using PMA was much higher than that using alumina particles without PSS modification in all pH ranges of 2–11. The removal of CFX reached 98% under the optimum conditions of pH 6, contact time of 120 min, adsorbent dosage of five milligrams per milliliter and ionic strength 104-M NaCl. The adsorption isotherms of CFX at different salt concentrations fit well with a two-step adsorption model, while the adsorption kinetic fit well with a pseudo-second-order model with a good correlation coefficient (R2 > 0.9969). The CFX-removal from a hospital wastewater using PMA was more than 75%. Our study demonstrates that adsorption of PSS onto alumina to modify the particle surface is important to form a novel adsorbent PMA for CFX-removal from water environments.

Highlights Pneumopericardium is a rare laparoscopic complication, mostly subclinical. Chest pain and dyspnea might be the manifestation of pneumopericardium, however, of harmful cardiopulmonary conditions as well. Conservative managements are efficient in hemodynamically stable.

Introduction: Percutaneous nephrolithotripsy is safe and effective for managing renal calculi but complex and expensive. Different institutions with different resource readiness as well as approaches might show differences in outcomes. Our systematic scoping review aimed to map the evidence body as well as review effectiveness of the technique in national scale in over three decades of practice. Methods: This research was carried out with studies on percutaneous nephrolithotripsy in Vietnam by searching full text articles via following databases as well as search engines: PubMed/MEDLINE, Cochrane Library, Embase, Google Scholar, http://lienthuvien.yte.gov.vn/ - an online library run by Vietnam’s Ministry of Health;  and by searching directly in the library of Hanoi Medical University. Study selection process followed the PRISMA flow chart of study search and selection. The data from selected studies were extracted with double check before summarizing and charting the data. Results: Preliminary data analysis from 30 selected studies showed that approximately 20 years from the first performance, percutaneous nephrolithotripsy gradually transferred from more resource readiness centers to lesser counterparts. The transference was accomplished to some extent, reflecting on improvement in operation time, surgical conversion rate, stone free rate, as well as on a decrease in the rate of severe complications. Conclusion: This systematic scoping review mapped evidence body in national range regarding percutaneous nephrolithotripsy. It suggests that a more homogeneous research design should be obtained for more precisely picturing clinical practice.