Photocatalytic degradation of phenolic pollutants by Nanocomposites: A systematic review and pooled analysis

All living things depend on water, which is a precious natural resource. Modern hydropower generation, industrial processes, and transportation increasingly rely significantly on water. Emerging contaminants are currently posing a serious threat to our environment and significantly damaging human health. To address these water-related problems, photocatalysis, one of the advanced oxidation processes, has drawn a lot of attention. The most common photocatalytic approach for the elimination of phenolic pollutants, which is one of the emerging pollutants in the aquatic environment, was determined through a systematic review of the scientific literature in the current study. Furthermore, It was thought about how independent variables like pollutant concentration, catalyst amount, radiation time, pH, and contact time might affect the process. Twelve research, all of which focused on phenolic contaminants, were included. In two studies, all 12 phenolic contaminants were eliminated. Most of the pollutants exhibited a degradation efficiency above 90%. The removal of organic contaminants from water can be accomplished with efficiency and effectiveness by using sophisticated photocatalytic treatment methods. However, the combined data support photocatalytic treatment procedures as a new technique in recent years for the removal of organic contaminants

Moringa oleifera: a sustainable method to treat fluoride-contaminated water

Excessive fluoride (F) is introduced into the water either by natural phenomenon or by industrial effluents. However, F in adequate amounts is necessary for sustaining good dental health. Contrarily, F concentrations in drinking water surpassing 1.5 mg/L may, nevertheless, be harmful to human health. F pollution in drinking water is a serious and challenging problem that affects people all over the world. Adsorption appears to be an effective, environmentally beneficial, and cost-effective approach to eliminating excessive F from drinking water in the present day. In this study, Moringa oleifera seed powder was employed as a natural adsorbent for defluoridation. The maximum removal efficiency was achieved for water with pH of 7.0, 1 mg/L of initial F concentration, contact time of 120 min, and adsorbent dose of 200 mg/L. SEM and FTIR were used to determine the structure, morphology, and other chemical composition features of the prepared M. oleifera seed powder. This work is anticipated to be readily implemented in real-time F elimination. HIGHLIGHTS The Moringa oleifera seeds were collected locally to determine the adsorption capacity.; Compared to other natural bio sorbents, M. oleifera seeds are edible, and there is not much health impacts.; The M. oleifera seeds are dried in hot air oven at suitable temperatures.; All parameters were analyzed before and after treatment and changes produced by the adsorbent was evaluated for each of parameters.

Evaluation of the various oral candida species among patients on hemodialysis: A clinical study

Introduction: Oral candidiasis develops as a result of an opportunistic infection. In patients on hemodialysis who may be immune-compromised, candida can change from a commensal to a pathogen. Identification and classification of Candida species are crucial for the treatment of these patients. To distinguish between distinct species of candida found in hemodialysis patients with chronic renal failure's oral cavity. Materials and Methods: A total of 100 people were investigated, including 50 patients with “Chronic Renal Failure (CRF)” on hemodialysis and 50 healthy controls. Using “Sabouraud's Dextrose Agar (SDA)” and “CHROM Agar Culture Media”, salivary samples were incubated for 24, 48, or 72 hours at 37°C to develop candida species. Colony forming units/milliliter, a unit of measurement for colonies, were counted and calculated (CFU). Results: On SDA and CHROM agar medium, positive candidal growth was seen in the CRF with HD and Control Groups. There was a significant variance in the growth and the subspecies distribution of the colonies among the groups. The most common species was c.albicans followed by c. cruzi and tropical. Other subspecies were negligible. The number of colonies was also greater than 400 CFU in the majority of the dialysis subjects, while it was only 200 CFU for the majority of the controls. Conclusion: Patients with chronic renal failure receiving hemodialysis showed significantly higher levels of candida isolation and differentiation than healthy individuals (P 0.05)

Evidence-based review, grade of recommendation, and suggested treatment recommendations for melasma

Treatment of melasma is known to be less satisfactory, often incomplete, and relapse is frequent. Although many treatment options are available, they are either known to be unsafe on long-term use or their long-term safety profile is unknown. Patients often use various drugs, even topical steroid-based preparation without any medical supervision for long period of time, making the skin unsuitable for many of the drugs available. Thus, there has been gross disparity among the treating physician about what drugs and what regimen are best suitable for various categories of melasma patients and in different situations. With this background, numerous newer drugs, mostly combinations of some proprietary molecules or even unknown plant extracts, have flooded the market for the management of melasma. Information on efficacy or safety of these products are almost unknown. Studies on Asian people, especially Indian population, are far less commonly available. Therapeutic guideline for use on Indian patients with melasma is almost missing. Extrapolation of data from Caucasian people for use on Asian people may not be scientifically justifiable because Caucasian and Asian people are known to have inherent difference in their response as well as tolerance to the drugs used for melasma. With this background, we have extensively evaluated, following a strict, scientifically designed protocol, all the available studies on melasma management till May 2016 and prepared this document on level of evidence, grade of recommendation and suggested therapeutic guideline for melasma as per the method proposed by Oxford Centre of Evidence-Based Medicine. Various ethical, social, logical, regional, and economic issues in the context of Indian and similar populations were given due importance while preparing the suggested therapeutic recommendation