Five consecutive regeneration cycles verified an excellent reusability for 1S-BC. The overall results allow to conclude that the FeCl3 modification of the biochar obtained from Tribulus terrestris plant biomass could give an efficient alternative adsorbent for U(VI) removal in a variety of environmental conditions, promoting protection of the environment and human health, as well as facilitating resource utilization and sustainable management of the materials studied.Ibuprofen (IBP) is a non-steroidal anti-inflammatory drug released into the environment through hospital and medical effluents, pharmaceutical wastewater and veterinary use. The aim of this paper is to review the empirical findings on the adsorption of IBP from aqueous media. A preliminary ecotoxicological assessment confirmed the environmental risk of IBP in the aqueous environment. Open literature works considered in this review were for the past decade (2010-2020). Carbon-based adsorbents are the best class of adsorbent for the uptake of IBP and the highest reported maximum adsorption capacity (qmax) for IBP is 496.1 mg/g by SWCNTs. The range of adsorption capacities for IBP uptake in this review is between 0.0496 and 496.1 mg/g. The mechanism of uptake is majorly by hydrophobic interactions, π - π stacking, hydrogen bonds, electrostatic interactions and dipole-dipole interaction. IBP uptake was best fit to a wide variety of isotherm models but was well suited to the pseudo-second order kinetics model. The thermodynamics of IBP uptake depends majorly on the nature of the adsorbent and desorption from the solid phase is based on an appropriate choice of the eluent. Knowledge gaps were observed in used adsorbent disposal and process improvement. In the future, interest would increase in scale-up, industrial applications and practical utilisation of the research findings which would help in sustainable water resource management.Currently used foam agent HCFC-141b was undergoing phased out worldwide with the implementation of the Montreal Protocol. HFO-1234ze was proposed as replacement in polyurethane (PU) foam industry with shorter atmospheric lifetime. This paper calculated historical and future emissions of HCFC-141b and HFO-1234ze till 2050, used GEOS-Chem under two HFO-1234ze emission scenarios to track its atmospheric process and distribution, and to assess its potential environmental effects. Results showed that annual HCFC-141b emissions for 2015, 2019 and 2050 were 12.6 Gg/yr, 21.0 Gg/yr and 7.6 Gg/yr, respectively and emissions of HFO-1234ze would reach 124.4 Gg/yr by 2050. Under Scenario I with HFO-1234ze emissions of 12.6 Gg/yr as input, annual mixing ratios of HFO-1234ze and its products CF3CHO and HCOF were 10.47, 2.68 and 1.74 pptv for China, and were 0.55, 0.18 and 0.1 pptv globally, respectively, suggesting the regional aggregation of these substances in emission areas. HCOF were removed from atmosphere by depositions, with total deposition rates of 22.06 g km-1 y-1 in CH, and 1.15 g km-1 y-1 in globe. Under Scenario II with HFO-1234ze emissions of 124.4 Gg/yr as input, annual mixing ratios of HFO-1234ze, CF3CHO and HCOF, along with HCOF total deposition rates were 102.98 26.36 and 17.17 pptv and 217 g km-1 y-1 in China, respectively, increased linearly to HFO-1234ze emissions change. The mixing ratios of HFO-1234ze and HCOF were too small to exert significant effects on current atmosphere burden and circulation, while CF3CHO might potentially involve in aminolysis reaction under future emissions of HFO-1234ze.Polycyclic aromatic hydrocarbons (PAHs) pose adverse risks to ecosystems and public health because of their carcinogenicity and mutagenicity. As such, the extensive occurrence of PAHs represents a worldwide concern that requires urgent solutions. Wastewater treatment plants are not, however, designed for PAH removal and often become sources of the PAHs entering surface waters. Among the technologies applied in PAH remediation, constructed wetlands (CWs) exhibit several cost-effective and eco-friendly advantages, yet a systematic examination of the application and success of CWs for PAH remediation is missing. This review discusses PAH occurrence, distribution, and seasonal patterns in surface waters during the last decade to provide baseline information for risk control and further treatment. Furthermore, based on the application of CWs in PAH remediation, progress in understanding and optimising PAH-removal mechanisms is discussed focussing on sediments, plants, and microorganisms. https://www.selleckchem.com/products/GSK429286A.html Wetland plant traits are key factors affecting the mechanisms of PAH removal in CWs, including adsorption, uptake, phytovolatilization, and biodegradation. The physico-chemical characteristics of PAHs, environmental conditions, wetland configuration, and operation parameters are also reviewed as important factors affecting PAH removal efficiency. Whilst significant progress has been made, several key problems need to be addressed to ensure the success of large-scale CW projects. These include improving performance in cold climates and addressing the toxic threshold effects of PAHs on wetland plants. Overall, this review provides future direction for research on PAH removal using CWs and their large-scale operation for the treatment of PAH-contaminated surface waters.Land use plays a significant role in determining the spatial patterns of water quality in the Johor River Basin (JRB), Malaysia. In the recent years, there have been several occurrences of pollution in these rivers, which has generated concerns over the long-term sustainability of the water resources in the JRB. Specifically, this water resource is a shared commodity between two states, namely, Johor state of Malaysia and Singapore, a neighbouring country adjacent to Malaysia. Prior to this study, few research on the influence of land use configuration on water quality have been conducted in Johor. In addition, it is also unclear how water quality varies under different seasonality in the presence of point sources. In this study, we investigated the influence of land use and point sources from wastewater treatment plants (WWTPs) on the water quality in the JRB. Two statistical techniques - Multivariate Linear Regression (MLR) and Redundancy Analysis (RA) were undertaken to analyse the relationships between river water quality and land use configuration, as well as point sources from WWTPs under different seasonality.