http://localhost:80/xmlui/handle/123456789/1061 Sun, 05 Apr 2026 17:27:32 GMT 2026-04-05T17:27:32Z http://localhost:80/xmlui/handle/123456789/10795 Title: Study on synthesis and characterization of pyrolytic char doped ceramic membrane and its application on chromium removal from wastewater Authors: Ray Sarkar, Aparna; Sen, Dwaipayan Abstract: Ceramic membranes have become increasingly popular in wastewater treatment (WWT) due to their cost-effectiveness and high productivity. Despite numerous studies on membrane applications in WWT, there remains a lack of comprehensive analysis regarding their performance, efficiency, and critical factors. This investigation seeks to assess the efficacy of a pyrolytic char-doped ceramic membrane in chromium remediation. Modifying the surface charge and enhancing hydrophilicity in ceramic membranes may play a crucial role in achieving effective separation at a lower cost. Kaolin, renowned for its cost-effectiveness and effectiveness, stands out as a prominent raw material for ceramic membrane fabrication. In this study, char derived from the pyrolysis of waste polyethylene terephthalate (PET) bottles was introduced into the kaolin matrix to examine its impact on surface charge and hydrophilicity. The concept behind this reutilization of the pyrolytic char in ceramic membrane modification attributes to the waste recycle toward regeneration of value-added product. In this study the percentage doping of the char with ceramic membrane was enumerated with the separation of chromium from wastewater as alternative to complex micellar enhanced ultrafiltration (MEUF). The membrane was fabricated using the dry-press method. The investigation aimed to analyze the effect of doping on three key membrane properties: average pore size, hydraulic flux, and surface charge. Permeate collection, streaming potential measurement, and contact angle analysis were conducted to gain a comprehensive understanding of the separation efficacy, surface charge, and hydrophilicity of the prepared membrane. Char doped membrane showed better hydrophilicity with a chromate rejection of around 60% from solution. Description: https://doi.org/10.1080/00986445.2025.2466178 Sat, 01 Feb 2025 00:00:00 GMT http://localhost:80/xmlui/handle/123456789/10795 2025-02-01T00:00:00Z http://localhost:80/xmlui/handle/123456789/10794 Title: Fabrication of porous polydimethylsiloxane using camphor substitutes Authors: Chatterjee, Sulagna; Chatterjee, Liana Abstract: Porous polydimethylsiloxane is an essential component in portable microfluidic devices. Unlike its solid counterparts, these polymeric membranes are preferred for their low cost and superior mechanical strength. The most common method of preparation studied so far is soft lithography using emulsion templating. In this paper, we employed emulsion templating to fabricate porous polydimethylsiloxane using various substitutes of camphor such as camphor oil and camphor powder. Camphor, a sublimatory material that sublimes on heating, has been exploited to prepare the sacrificial template for the porous structure. We reported and compared different preparation techniques based on their physical properties which resulted in membranes with a hierarchical pore structure within a composite polymeric matrix. Description: https://doi.org/10.1080/00194506.2024.2394495 Thu, 01 Feb 2024 00:00:00 GMT http://localhost:80/xmlui/handle/123456789/10794 2024-02-01T00:00:00Z http://localhost:80/xmlui/handle/123456789/10787 Title: Green synthesis of NPs (Ag & Au) from some plant families (Phyllanthaceae, Lamiaceae, Rutaceae and Euphorbiaceae) and their application in therapeutics: A review Authors: Basumatary, Sunshri; Daimari, Jennifer; Ghosh, Avijit; Kalita Deka, Anamika Abstract: Plant mediated green synthetic route for silver and gold nanoparticles (AgNPs & AuNPs) from four plant fam ilies: Phyllanthaceae, Lamiaceae, Rutaceae and Euphorbiaceae and their therapeutic application of are summa rized in the present review article. Silver and gold nanoparticles prepared from the mentioned plant families were visualized with various therapeutic applications viz., anti-microbial, ant-bacterial, anti-cancer and anti oxidant activities etc. Owing to size and shapes, NPs green synthesized from various plants like Ricinus com munis (Ag), Tectona grandis (Ag), Plectranthus amboinicus (Ag, Au), Phyllanthus emblica (Ag, Au), Ricinu com munis (Ag), Leucas aspera (Ag, Au), Acalypha indica Linn . (Ag, Au) were envisioned with innumerable curative applications such as antimicrobial, anticancer, antibacterial, anti-oxidant, cytotoxicity, haemolytic and stimu lating effect etc. In the current review, eco-friendly green synthetic itineraries for synthesis of AgNPs and AuNPs are mainly focused. Phyto-components present in plants such as anti-oxidant molecules, terpenes, alkaloids, coumarins like quercetin, D-allose, 1-valine, ocosenamide molecules etc. are the responsible reduc ing agents for the capping reaction (Ag+ to Ag0 and Au3+ to Au0) of nanoparticle from metal precursors like AgNO3andHAuCl4. Description: https://doi.org/10.1016/j.sajb.2024.02.003 Fri, 01 Mar 2024 00:00:00 GMT http://localhost:80/xmlui/handle/123456789/10787 2024-03-01T00:00:00Z http://localhost:80/xmlui/handle/123456789/10763 Title: Investigating the tolerance of nano-filtration for the treatment of wastewater Authors: Ghosh, Avijit; Agarwal, Madhu; Maheshwari, Karishma Abstract: The textile industries generate highly concentrated and toxic waste streams which are disposed of without any pretreatment leading to environmental imbalances. Therefore, such waste streams need to be treated before directly discharging. This study explores the nano-filtration (NF) approach for dye effluent remediation. Congo red dye is the widely used chemical that imparts red colour to fabric and is highly toxic when emitted in a very minute amount of 3 mg/L. Therefore, a polyamide-based NF HFT-150 was implemented for the removal of Congo red dye (CD), noting the influences of feed pressure (1–12 kg/cm2) and inlet concentration (10–100 mg/L) used for examining the permeate flux in the process. It was reported that 99.7% removal was obtained at a feed pressure of 6 kg/cm2 with permeate flux of 7.9 mL/min cm2 for an initial concentration of 10 mg/L. Moreover, the samples from a small scale textile industry from Pali, Rajasthan, were collected, and the physicochemical properties were evaluated, revealing the total dissolved salts of 8560 mg/L. The collected sample was treated by NF HFT-150, indicating that potentially strong discolouration was reported at 6 kg/cm2 feed pressure. Therefore, it can be suggested that nano-filtration could be efficiently implemented for textile effluent treatment. Description: https://doi.org/10.1080/00194506.2022.2101147 Sun, 22 Jan 2023 00:00:00 GMT http://localhost:80/xmlui/handle/123456789/10763 2023-01-22T00:00:00Z