очищення стічних вод

Use of Chemically Modified Chitosan for the Adsorptive Removal of Toxic Metal Ions in Aqueous Solutions

Chemical modification of chitosan was successfully carried out using three derivatives namely: 3 hydroxybenzaldehyde, 2,3-dihydroxybenzaldehyde, and 3,5-di-tert-butyl-2-hydroxybenzaldehyde by a condensation reaction. Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), Brunauer–Emmett–Teller (BET) surface area, thermal gravimetric analysis (TGA), and X-ray diffraction (XRD) methods were performed for characterization of the chitosan-derived Schiff base adsorbent materials.

EFFICIENCY OF APPLICATION OF THE MICROBIOLOGICAL METHOD OF WASTE WATER TREATMENT TO REMOVE HEXAMETHYLENDIAMINE

Wastewater contaminated with hexamethylenediamine (HMD), which is discharged into natural reservoirs, causes damage and loss of hydrobionts, worsens the quality of water which becomes unsuitable for use. For wastewater treatment from HMD, the possibility of applying bacterial cultures-destructors which use the HMD as a nutrition source is considered.

TO THE PROBLEMS OF WASTEWATER TREATMENT FROM MINERAL POLLUTANTS WITH THE USE OF MICROALGAE

This article presents the results of experimental studies on the use of Chlorella microalgae for wastewater treatment from the most common mineral pollutants. The influence of the mineral pollutants, namely anions HSO3- , NO3 - , H2PO4 - on the dynamics of wastewater treatment has been established. Analytical dependences of microalgae biomass growth rate depending on pollutant concentration HSO3- , NO3 - , H2PO4 -   and   are obtained. The values of biomass growth coefficients at the corresponding pollutant concentrations are determined.

NANOMATERIALS AND NANOTECHNOLOGY IN WATER PURIFICATION. REVIEW

The issue of drinking water is one of the most important nowadays for most countries, especially for densely populated and developing countries. The main reasons for such situation are population growth; drought; extraction of minerals, in particular oil; the widespread use of chemicals in the farm, etc., which are today that critical "pressure" on nature that prevents it from fully performing water purification from contamination.

CAVITATION WASTEWATER TREATMENT FROM TOLUENE

The integral components of wastewaters from chemical and petrochemical enterprises are monocyclic aromatics (benzene, toluene, ethylbenzene, xylene, phenol and their derivatives). The toxic effect of these compounds turns out in violations of the activity of the human endocrine and central nervous system, the change in the species and trophic structure of biocenoses.

Кавітаційний розклад бензолу під дією акустичних випромінювань ультразвукового діапазону

Досліджено розклад бензолу під дією ультразвукових випромінювань, сформованих за допомогою ультразвукового магнітострикційного випромінювача. На основі спектрофотометричного аналізу розчинів бензолу, з застосуванням акустичних випромінювань ультразвукового діапазону, встановлено зміну концентрації бензолу в часі. Встановлено, що ініціювання процесу впродовж 300 с оброблення є достатнім для подальшого розкладу бензолу без подальшого накладання кавітаційних полів.