Polycyclic Hydrocarbons Vol. 1. Pp. xxvi + 487. 126S. (With a chapter on carcinogenesis by Regina Schoental.) Vol. 2. Pp. lvii + 487. 140s. By E. Clar. (London and New York: Academic Press; Berlin: Springer-Verlag, 1964.)

Polycyclic Aromatic Hydrocarbons

Oral surgery, oral medicine, oral pathology, oral radiology and endodontics

Interaction between Chlorella vulgaris and nitrifying-enriched activated sludge in the treatment of wastewater with low C/N ratio

High-efficiency extraction of bromocresol purple dye and heavy metals as chromium from industrial effluent by adsorption onto a modified surface of zeolite: Kinetics and equilibrium study.

Barriers to smart waste management for a circular economy in China

This study comes as the first trial that uses microwave (MW) in combination with assisted chemical vapour deposition (CVD) to generate homogeneous carbon nanofibers (CNFs) at short period thermal reaction. The outcomes confirmed that these materials are of highly-ordered pyrolitic graphite nature. CNFs were obtained having uniform diameters (80-150 nm) and long fibres (0.82-1.75 μm). SEM and TEM evaluations revealed relatively less damage in fractured surfaces and the TGA exhibited insignificant change of CNFs during thermal decomposition. The 'solid' CNFs showed clear properties as disorder, crystalline, and bent graphitic sheets. The as-prepared CNTs demonstrated good MW-absorption properties with superior performance which could be due to the combination of the dielectric-type absorption and the interference of multi-reflected MW. This enhancement gave 97% purity of the novel manufactured CNFs. Therefore, we recommend our greener nanoproducts for industries as energy, pharmaceutical, cosmetics, textile, sensors, electronics, vehicles, and both of quantum dots (QD) and fluorescent C-dots.

Developed greener method based on MW implementation in manufacturing CNFs

A new PVC-filter filled with recycled glass and crushed foam glass has been investigated the removal of major pollutants in rainwater to enhance the physical properties and enrich the matrix of this potential source of water with essential minerals. The physical properties of 10 pre-filtered and 10 post-filtered specimens of rainwater are tested. Then, all samples are analysed to assess the chemistry of rainwater. The ions found in pre-filtered rainwater follows the order: HCO3− > SO42− > NO3− > Cl− > F- for anions and Ca2+ > Mg2+ > Na+ > NH4+ > Sr2+ > K+ for cations. The relative abundance of heavy metals in pre-filtered rainwater follows the descending order: Cu2+, Fe2+, Zn2+, Se4+, Pb2+, Mn2+, As5+, Ni2+, Cd2+. On the other hand, the high concentrations of SO42-, NO3-, and the heavy metals found in this study can be signs of that Damascus rainwater is mainly of anthropogenic origin. After filtration, the analytes in rainwater becomes in conformity with the World Health Organization for drinkability. The performance of this filter is compared with Eugene Water & Electric Board. This comparison proves that this filter is greener and eco-friendly option to conventional rainwater purification practices. Results of this research prove the capability of this filter to shift polluted raindrops into a freshwater.

Advanced highly polluted rainwater treatment process

Data of thematic analysis of farmer׳s use behavior of recycled industrial wastewater.

In the cement industry, researchers have worked on blending cement with supplementary cementitious materials (SCMs) to enhance the mechanical properties of concrete For technical and environmental reasons, previous studies have recommended that concretes be designed with less ordinary Portland cement (OPC) Other researchers encourage the use of thermal treatments at the precast stage In this work, high volumes of various SCMs other than OPC were used to prepare five cement formulations, including a control sample Initial tests of three hydraulic binders were performed to check their suitability before mixing cement samples The samples were treated in water, air, hot water, and hot air curing (HAC) conditions after demoulding The study showed that a combination of rice husk ash (RHA) and fly ash (FA) with OPC in the binder matrix, cured under HAC conditions, gave the best compressive and flexural strength results with the lowest water absorption

Loai Aljerf

Papers

High-efficiency extraction of bromocresol purple dye and heavy metals as chromium from industrial effluent by adsorption onto a modified surface of zeolite: Kinetics and equilibrium study.

Developed greener method based on MW implementation in manufacturing CNFs

Advanced highly polluted rainwater treatment process

Data of thematic analysis of farmer׳s use behavior of recycled industrial wastewater.

Effect of Thermal-cured Hydraulic Cement Admixtures on the Mechanical Properties of Concrete