Топ-10 конкурентов emb.gov.ph

denr.gov.ph

BIODIVERSITY MANAGEMENT APPLICATION FORMS GRATUITOUS AND POSSESSION OF WILDLIFE Gratuitous Permit (GP) Memorandum of Agreement (MOA) for Biodiversity Research Bioprospecting Undertaking (BU) TRANSPORT AND TRADE OF WILDLIFE Local Transport Permit (LTP) Non-CITES (Export) Certificate Non-CITES (Import) Certificate Non-CITES (Re-export) Certificate BREEDING AND PROPAGATION OF WILDLIFE Wildlife Farm Permit (WFP) Wildlife Collector’s Permit (WCP) Wildlife Special continue reading : Biodiversity Management

weap-phil.org

INDIVIDUAL / REGULARShall be made of three (3) categories: Active, Student and Fellows(1.) Active Members. Shall be individuals such as water utility managers or policy makes or key employees or ke…

gjesm.net

BACKGROUND AND OBJECTIVES: Heavy metal contamination from industrial wastewater remains a global concern. Biomass waste still contains active compounds that can be processed into useful materials. The study objectives were to address both problems by synthesizing composite hydrogels from pineapple crowns and avocado peels for the simultaneous adsorption of lead(II), cadmium(II), and copper(II) from aqueous solutions.METHODS: Composite hydrogels were synthesized using free radical polymerization using pineapple crown biochar and avocado peel biochar as grafting substrates. The material was characterized using Fourier transform infrared spectroscopy, scanning electron microscopy-energy dispersive x-ray spectroscopy, Brunauer-Emmett-Teller, and hardness testing to determine its physicochemical properties. The adsorption process uses a batch system in a solution containing lead, cadmium, and copper ions simultaneously at potential 4 to 6 and a temperature of 26 degrees Celsius with a speed of 125 revolutions per minute for an operating time of 300 minutes. The kinetics of adsorption were evaluated using the pseudo-first-order and pseudo-second-order models, and the model fit was based on the coefficient of determination value and the correlation.FINDINGS: Both hydrogels demonstrated mesoporous structures with high specific surface areas (square meters per gram) of 767.61 for pineapple crown composite hydrogel and 802.41 for avocado peel composite hydrogel, along with rich functional groups such as hydroxyl, carboxyl, alkyl, nitrile, and carbonyl groups that facilitate chemisorption. The avocado peel composite hydrogel showed the highest adsorption capacity (milligrams per gram), which was 0.56 for lead, 0.43 for cadmium, and 0.41 for copper. These results were better than the performance of the pineapple crown composite hydrogel. Adsorption kinetics were well described by the pseudo-second-order model, with coefficient of determination values from 0.91 to 0.98 for compo

umweltbundesamt.de

Das Umweltbundesamt (UBA) ist Deutschlands zentrale Umweltbehörde und forscht, berät und informiert zu zahlreichen Fragen des Umweltschutzes und zu Umwelt & Gesundheit.

ademe.fr

L’ADEME, est résolue à faire bouger les lignes pour bâtir une société plus sobre et solidaire.

mos.gov.pl

minister srodowiska prowadzi politykę zrównoważonego rozwoju z zachowaniem ojczystych zasobów przyrodniczych i polskiego krajobrazu. odpowiada także za racjonalną gospodarkę leśną i efektywne wykorzystanie zasobów naturalnych.

naturvardsverket.se

Här hittar du inspiration och läsning som kopplar till kravet om att erbjuda servering i återanvändbara muggar och matlådor. Det känns kanske just nu som att omställningen är långt bort men den är nödvändig och inom en snar framtid kommer det att kännas helt naturligt att hämta i återanvändbara matlådor och muggar.