Magnetically separable photocatalyst beads containing nano-sized iron oxide in alginate polymer were prepared. This magnetic photocatalyst beads are used in slurry-type reactors. The magnetism of the catalyst arises from the nanostructured particles gamma-Fe(2)O(3), by which the catalyst can be easily recovered by the application of an external magnetic field. These synthesized beads are sunlig...

Chromium compounds are potent toxic and carcinogenic substances. With respect to toxicity, hepatic and renal toxicity have been reported both in workers and in animals exposed to chromium (VI). Chromium (VI) compounds induces DNA damage in vivo and in cultured cells as well as the cytotoxicity evaluated by the leakage of lactate dehydrogenase. The present study reports the cytotoxicity of chrom...

An artificial neural network (ANN) model was developed to predict the removal efficiency of chromium (VI) from aqueous solution using a Borasus flabellifer coir powder as adsorbent. The effect of operational parameters such as pH, adsorbent dosage, and initial chromium (VI) concentration are studied to optimize the conditions for the maximum removal of chromium (VI) ions. The ANN model was deve...

Abstract. Meitiniarti VI, Putri EK, Runtu AE, Nugroho RA, Kasmiyati S. 2022. Isolation and identification of Cr-resistant bacteria from the rhizosphere Tagetes sp. their ability to reduce Cr(VI). Biodiversitas 23: 4118-4124. Bioremediation involving interaction plants with microorganisms is a technique for improving environment polluted chromium hexavalent [Cr(VI)]. Marigolds (Tagetes sp.) are ...

This research involved the synthesizing of a reactive polymer, long alkyl quaternized poly(4-vinylpyridine) (PVP), and coating it on the surface of silica gel to produce a granular sorbent to remove Cr(VI) from water. Batch experiments were conducted to determine the kinetics, sorption isotherm, pH effects, and influence of other anions on the chromium adsorption onto the coated silica gel. The...

One of the most important and toxic heavy metals in wastewater is chromium. Cr (VI) is released from different industrial operations, including metallurgy, leather tanning, paint, textile industries, chemical manufacturing, pulp production, ore and petroleum refining, metal corrosion, electroplating products etc. Hexavalent chromium is toxic, carcinogenic, probably mutagenic and highly soluble....

Phoma medicaginis is a deuteromycete fungus that grows on a variety of plants, a few of which are used in herbal medicines. The current work attempts to establish the possible mechanism of toxicity of this fungus, in case it is consumed by animals as fungus infested food. Chromium (VI) is a known pollutant, the toxicity of which is manifested through the oxidative stress exerted on the animals ...

A critical appraisal of single-step extraction procedures of chromium species from soil was done in terms of their selectivity towards Cr(III) and Cr(VI) species. Samples of natural mineral and organic soil and samples of soil enriched with different chromium compounds of various solubility (in liquid or solid form) were used to simulate contamination of soil by liquid and solid wastes. The eff...

Objectives: Exposure to chromium, the transition element found in many compounds of earth’s crust, leads to various health hazards including cancer, dermatitis, damage of liver and kidneys, and reproductive toxicity in both male and female. Toxic effect of chronic exposure to chromium at low environmentally relevant dose is recently recognized and less studied. In the present study, we evaluate...