Manganese contamination of groundwater exists worldwide. Manganese removal is primarily performed through catalytic oxidation by manganese-oxidizing bacteria. In this study, we identified a new manganese(II) oxidase (CopA) from Brevibacillus panacihumi MK-8. The copA gene was cloned and expresse...

Chlorine is not effective in the oxidative removal of soluble manganese(II) ions at neutral pH. Powdered activated carbon (PAC) also has a very limited capacity for Mn(II) removal through adsorption in drinking water treatment practice. This study explored the combined use of PAC and chlorine fo...

In this work, the effect of the thermal annealing on the composition of crack-free anodic tin oxide layers with different channel diameters, formed in 1 M NaOH at 2 and 4 V, was investigated in detail. STEM tomography confirmed that anodic oxides formed at 2 V have narrower channels, higher poro...

TiN/W2N multilayer coatings with different modulation periods (modulation ratio was 1:1) changing from 2 nm to 7 nm were deposited by reactive magnetron sputtering. To evaluate the oxidation resistance of the multilayer coatings, heat treatment in the temperature range of 300–700 °C were condu...

Spontaneous tin whisker growth has been mysterious and catastrophic for more than half century. The difficulty in the research on this topic consists of the randomness of the whisker growth, the slow growth rate and many other tricky factors. Herein, with Ti2SnC-Sn as a new platform, fast tin wh...

Yellow inorganic pigments PrxZr1-xSiO4 (x = 0–0.08) have been prepared by a novel non-hydrolytic sol-gel (NHSG) method at 750 °C for 2 h. Replacing Pr4+ for Zr4+ in ZrSiO4 increased the cell volume and changed the color from white to yellow gradually. The Si―O―Zr and Si―O―Pr bands were obs...

A new series of high near-infrared (NIR) reflecting pigments with colors ranging from yellow to red by tuning the Bi2Ce2O7 with rare earth ion substitutions on both A and B sites were synthesized by a solid state reaction method. The resulting colorants were evaluated for their structural and op...

Lead chromate pigment in the form of the commercial pigment, Pigment Yellow 34, CAS No. 1344-37-2, used in the plastics and coatings industries, did not induce chromosome aberrations in Chinese hamster ovary (CHO) cell line WB(L). Lead chromate pigment is essentially insoluble in water, and in a...

Pigments are organic or inorganic compounds which are used as colouring agents in food, textile, cosmetics, and pharmaceutical industries. Presently, pigment extracted from natural sources gained more attention since it is eco-friendly and possess medicinal property. In this study, the extractio...

In this paper, the synthesis of glycerol carbonate from glycerol and dimethyl carbonate is studied. First, operating conditions and a catalyst were selected after screening of different alkali metal salts, resulting K2CO3 the most active species. Afterwards, given the low degree of miscibility b...

In this study, development of cooperative catalyst is demonstrated whereby Lewis acid/base species and nucleophilic parts are immobilized in the pores of a polyamide-imide (PAI) hollow fiber support. The highly solvent-stable and porous Br/APS-grafted ZrO2-PAI hollow fiber (Br/APS/Zr-PAIHF) cata...

Electrical double layer capacitors (EDLCs) with HyperCoal-derived activated carbons (ACs) as electrodes are reported in this work. The ACs were prepared by the carbonization of HyperCoal at 600 °C followed by the activation with KOH and NaOH for 2 h between 500 and 800 °C to achieve high total...

The properties of carbonated hydroxyl and chloro lead apatites, Pb10(PO4)6(OH)2 and Pb10(PO4)6Cl2, serve as models for the incorporation of carbonate into their medically important calcium analogs, and there is likely incorporation of carbonate in an insoluble lead phosphate phase during lead re...

Reagents based on samarium (Sm) and ytterbium (Yb) are becoming increasingly more important in organic synthesis as an alternative and selective methods for the synthesis of multifunctional targets become more important. Although initially considered esoteric reagents, their recognized importanc...

In this study, the influence of pH on the degradation of oxytetracycline (OTC) by UV-C only and UV-C/H2O2 advanced oxidation process (AOP) was investigated. The effect of carbonate and bicarbonate on the photochemical transformation of OTC in UV/H2O2 system was also evaluated. It was found that,...

Paints based on the pigment white lead have traditionally been used in art. Currently, however, this pigment is difficult to find, either in powder or in paint, with sufficient purity and without undesired additives. Furthermore, the traditional methods of producing it are not feasible to use in...

Accurate and precise marine CO2 system measurements are important for marine carbon cycle research and investigations of ocean acidification. Seawater pH is important because it can be used to characterize a wide range of chemical and biogeochemical processes. Saturation states of calcium carbon...

The purpose of this study was to develop the structure–toxicity relationships for a large group of 268 substituted benzene to the ciliate Tetrahymena pyriformis using mechanistically interpretable descriptors. The shuffling-adaptive neuro fuzzy inference system (Shuffling-ANFIS) has been succes...

A thin dielectric layer plays a significant role to extend the electronic and optical properties of graphene-based field effect transistors. This study investigates the interaction between graphene and aluminum oxide layer (Al2O3) and the influence of Al2O3 on the properties of graphene. The ele...

In this paper, we propose and experimentally demonstrate a new laser processing method for low-temperature formation of effective aluminum oxide passivation layers on crystalline silicon. An aluminum film with a thickness of only several nm is evaporated on the silicon surface, after which a lon...