Application of Some Natural Porous Raw Materials for Removal of Lead and Zinc from Aqueous Solutions

This chapter discusses the adsorption of lead and zinc ions onto a natural zeolite (clinoptilolite) and zeolite bearing tuff (stilbite) from aqueous solution, whereby the main parameters were the effects of initial pH of solution, mass of adsorbent, and initial metal concentration in solution

Project “Biowaste” and Environmental Benefits - Municipality of Probistip

Project “Biowaste” and Environmental Benefits for Municipality of Probisti

AMBICON LAB on Workshop WP1-13 - Status of Environmental Laboratories in Western Balkans

Workshop WP1-13 - Status of Environmental Laboratories in Western Balkans EU 4 Green Recovery: Support the implementation of the Green Agenda for the Western Balkans IPA/2021/429-94

Possible sources of water pollution from the catchment area of the Sasa mine

Nowadays we have met with penetrative low regulation regarding to protective of human environmental. Having this in mind, it’s become necessary to take quality and full approach to detect the situation on the ground. Only with full information, the proper steps towards solving problems and satisfied low regulation demands can be taken. In this paper we try to show that, not only human activities as some technological processes could be responsible for environmental pollutions, but in many cases that is result of natural sources

КОНТРОЛА НА ФИЛТРАЦИОНИТЕ ПРОЦЕСИ НИЗ ТЕЛОТО НА БРАНАТА НА ЈАЛОВИШТЕ 3-2 НА РУДНИК САСА

Процесите на филтрирација низ телото на песочната брана кај конвенционалните хидројаловишта, кои се градат со низводен метод, се еден од најважните елементи кои директно влијаат на стабилноста на браната, а со тоа и на целокупната инсталација на хидројаловиштата. Со контролирање на нивото на провирните линии низ телото на браната, ние индиректно ја контролираме работата на дизајнираните дренажни ќилими, чија функција е да ја фатат филтрационата вода низ телото на песочната брана и да се исцедат низводно во форма на дренажна вода. Овој труд го покажува начинот на контрола на процесите на филтрација низ телото на песочната брана бр. 3-2 кај рудникот Саса преку систем на пиезометри и преку редовно испитување на основните геомеханички параметри на песокот од кој е изградена браната

Preparation and characterization of sludge-based activated carbon

Sewage sludges produced from wastewater treatment plants continue to create environmental problems in terms of volume and method of valorization. Thermal treatment of sewage sludge is considered as an attractive method in reducing sludge volume which at the same time produces reusable by-products. Produced sewage sludge from wastewater treatment plants is carbonaceous in nature and rich in organic materials, therefore, it has the potential to be converted into activated carbon. Converting sewage sludge into activated carbon based on its high content of organic components not only solve the disposal problem of sewage sludge, but also turn solid waste into useful material in producing adsorbent for wastewater treatment. In this study, the sludge-based activated carbon was obtained using sewage sludge from Volkovo wastewater treatment plant in Skopje by chemical activation using 25% ZnCl2 solution and carbonization at a temperature of 600˚C for 50 minutes. Prepared sludge-based activated carbon was characterized using scanning electron microscope, X-ray diffractometer and well-known standard methods, such as ash and moisture content, and adsorption capacity through iodine number method. The obtained sludge-based activated carbon has a macro-porous structure and exchangeable cations that makes it a suitable as adsorbent for wastewater treatment

Effect of Competing Cations (Cu, Zn, Mn, Pb) Adsorbed by Zeolite Bearing Tuff from Macedonia

Zeolite bearing tuff (stilbite 27%) from Vetunica deposit, Republic of Macedonia was investigated as an adsorbent for removal of copper, zinc, manganese and lead ions from synthetic aqueous solutions. The aim of this study was to investigate the influence of the presence of competing cations on the individual adsorption of Cu2+, Pb2+, Zn2+ and Mn2+ from a solution containing a mixture of all these metal ions, by zeolite bearing tuff. The obtained results show that the adsorption of studied ions in single and multi-component solution onto zeolite bearing tuff occurs efficiently. The amount adsorbed from multicomponent solutions was affected significantly, except for Pb2+ where the difference between single and multi-component solution is minimal, almost insignificant. The selectivity of zeolite bearing tuff was also determined for the respective heavy metal ions. The selectivity series obtained for single and multi-component solution was: Pb2+ > Cu2+ > Zn2+ > Mn2+

Removal of lead ions from acid aqueous solutions using zeolite bearing tuff

Water pollution come from a number of different sources, and pollutants are divided up into various classes, such as organic pollutants, inorganic fertilizers, metals and radioactive isotopes. Organic pollutants are susceptible to biological degradation, unlike heavy metals which are not degrade into harmless products. Heavy metals are a common pollutant found in various industrial effluents. They are often encountered in mining operations and acid mine drainage. Because heavy metals are highly toxic and are non-biodegradable, therefore they must be removed from the polluted streams in order to meet increasingly stringent environmental quality standards. For this reason, in this paper it is presented research of removal of lead ions from acid aqueous solution using zeolite bearing tuff. The physical and chemical properties of the used natural material (zeolite bearing tuff) are characterized by x-ray diffraction, scanning electron microscopy, energy dispersive spectroscopy and AES - ICP. In order to determine the effectivity of zeolite bearing tuff a series of experiments were performed under batch conditions from single ion solutions. Experiments were carried out at different initial ions concentration, different initial pH values and different adsorbent mass. The adsorption kinetics is reasonably fast. It means that in the first 20 min approximately 90% of Pb2+ is adsorbed from single ion solutions

Application of dispersion analysis for determining classifying separation size

The paper presents the procedure of mathematical modelling the cut point of copper ore classifying by laboratory hydrocyclone. The application of dispersion analysis and planning with Latin square makes possible significant reduction the number of tests. Tests were carried out by D-100 mm hydrocyclone. Variable parameters are as follows: content of solid in pulp, underflow diameter, overflow diameter and inlet pressure. The cut point is determined by partition curve. The obtained mathematical model and the values of the coefficients make it possible to find the classifying cut point for variable factors

Идејно решение за изградба на јаловиште бр. 2 Тораница – технолошки аспекти

Целта на овој труд е да се анализираат и разработат технолошките аспекти кои се битни при изработката на идејно решение за формирање на ново јаловиште во рударската индустрија. Како конкретен пример ќе биде анализирана потребата за изградба на ново јаловиште на рудникот Тораница – Крива Паланка. Во трудот ќе биде направен осврт на концепциското решение за формирање на јаловиштето, проценка на технолошките податоци, прелиминарна пресметка на волуменот и векот на експлоатација, концепциско решение за хидротранспортот на флотациската јаловина, одлагањето на јаловината, диспозицијата на објектите и др