| Global NEST Journal

Feasibility Study Toward Biogas Purification of H2S Impurities Using Wet and Dry Banana Leaves

by Huboyo Haryono Zaman Badrus Ramadan Bimastyaji Prasetijo Agung Wahyudi Rahmatia

Circular Economy and Bioeconomy

Biogas, an alternative technology that produces environmentally friendly fuels, usually contains impurities which may infer the performance of combustion. Hydrogen sulfide (H 2S) gas is one of the impurities in the biogas. This study’s objective is to assess the removal of hydrogen sulfide using...

Biogas air pollution removal +3 more

Improving Ozone Layer Depletion Forecasting with Hybrid Bi-Directional LSTM with CNN Classifier Model

by Ali JAVED

Air pollution and health

Due to the methane emission from the mining of coal and industrial byproducts including CFCs, depletion of the ozone layer causes raised global warming and worsens climate change. One chlorine atom can lead to the destruction of 1,00,000 ozone molecules causing depletion at a much faster rate than...

Hybrid Bi-Directional LSTM CNN Classifier +3 more

Experiment and Coupling Analysis of Municipal Solid Waste Degradation Under Multiple Influencing Factors

by Wu Xiaolong Rong Wan Yue Tengda Qingxiang Song Muhammad Muneer Liu Xinyang Dequan Kong ur Rahman Masood Muhammad Awais Hussain

Solid Waste Management

The increase in municipal solid waste (MSW) in northwest China has been substantial, with a significant portion primarily treated in landfills. This rapid growth in waste generation presents considerable challenges for landfill management and treatment. The factors affecting MSW degradation are...

Landfill Solid waste +6 more

Performance Studies on Exhaust Gas Recirculation diesel engine using Garcinia Gummi-Gutta Biodiesel with ceramic coating in direct injection

by Vengatesan Saravanakumar Pandian Balu Sekar Dhileepan Loganathan Gokulanathan Kumar Kandasamy Vetrivel Rajendran Silambarasan Chandramauli Awadhesh

Issue 5

Climate change

In today's digital environment, energy is the most essential for human survival. Its combustion surfaces were coated with ceramics to achieve total adiabatic operation, also called a low heat rejection engine (LHR). One of the best techniques to lower NOx emissions in internal combustion engines is...

Adsorption-desorption of doxycycline using pyrophosphoric acid-modified biochar derived from sesame stalk

by Murtaza Ghulam Usman Muhammad Javied Sabiha Algarni Tahani saad Al-Mohaimeed AmalM Ahmad Shabir Iqbal Javed Gurbanova Lala Iqbal Rashid

Issue 6

Circular Economy and Bioeconomy

The knowledge of the adsorption-desorption behavior of doxycycline on pyrophosphoric acid modified biochar derived from sesame is limited. In this study, we examined the doxycycline sorption on pyrophosphoric acid modified-sesame stalk biochar. The isotherm and kinetic sorption data showed...

Hazardous waste Adsorption

A statistical prediction of thermal efficacy improvement and exhausts reduc-tion of CRDI engine energized with ternary blends using linear regression machine learning model

by Phani Deepthi A.N. J.Prabakaran A.P Sathiyagnanam Prasad Sanaka Srinivasa

Issue 6

Sustainable Energy

The intensifying environmental and energy-related issues have led to a significant surge in the need for discovering alternative fuel sources. Additionally, the labor and time involved in identifying the appropriate fuel for the engine being examined is considerable. In order to mitigate this...

Pedicel biodiesel n-butanol +3 more

Optimization of Fuel Injection Timing and Pressure in CI Engines Using Waste Cooking Oil Biodiesel with Response Surface Methodology

by Saminathan Sathiskumar E.B. Priyanka Priyanka

Issue 6

Solid Waste Management

The global automotive industry is under mounting pressure to adopt highly efficient, low-emission engine technologies due to stringent regulations and increasing environmental awareness. In response, researchers are exploring alternative fuels, such as biodiesel, to enhance energy independence and...

Fuel injection timing Waste Cooking Oil +4 more

A Hybrid CNN-LSTM Predictive Model Deployed Federated Learning Model for Advanced Flood Prediction Systems to Forecast Coastal Region of Smart Cities

by Venkatesan Α Thiruvenkadam Krishnan

Climate change

Flooding in coastal regions of smart cities poses significant challenges, including infrastructure damage, economic losses, and threats to public safety. Traditional flood prediction models often suffer from data privacy concerns, limited spatial-temporal generalisation, and computational...

Alkali and Magnetite Modified Fly Ash as Granular Adsorbent for Removal of Naphthol AS Dye from Aqueous Solution

by Purbasari Aprilina Kusumawardani Restu Ariyanti Dessy Handayani Noer Abyor

Issue 6

Water and wastewater treatment and reuse

The presence of dye pollutants in the aquatic environment, apart from causing aesthetic problems, can also cause health problems. Removal of dye pollutants in industrial wastewater can be done using the adsorption method, which is a simple, effective and low-cost process. Fly ash is a solid waste...

carrageenan modified fly ash +2 more

How to Mitigate Climate Change? Dynamic Linkages between Clean Energy and Systemically Important Banks

by Tong Zhiqiang Ding Yijiu Ma Shenglin Yan Han

Issue 5

Climate change

This study employs wavelet coherence, wavelet quantile correlation, and Granger causality tests to comprehensively investigate the dynamic correlation characteristics between the U.S.clean energies and the stock returns of seven systematically important banks (SIBs). The main findings are as follows...

Clean energies Systemically important banks +3 more

Feasibility Study of Moving Bed Biofilm Reactor (MBBR) Technology at Guheshwori Wastewater Treatment Plant, Nepal

by Ghimire Ashish Ojha Sateesh Kumar

Water and wastewater treatment and reuse

Moving Bed Biofilm Reactor (MBBR) technology is applicable for removing organic components and nitrogen from wastewater in the Guheshwori Wastewater Treatment Plant (GWWTP). A lab-scale single-staged aerobic batch MBBR (16L pure volume, 5L active working volume) was designed and initiated using...

Removal efficiencies Municipal wastewater treatment, +3 more

Application of NaOH-Activated peanut shells as a low-cost adsorbent for the removal of cationic dyes

by Hamdache Farida Halet Farid Bekhti Saida Chergui Abdelmalek Yeddou Ahmed Reda Nadjemi Boubekeur

Issue 6

Water and wastewater treatment and reuse

The main purpose of this study is to evaluate the possibility of using a lignocellulosic residue, peanut shells after alkaline activation, as a low-cost adsorbent for the removal of methylene blue dye from aqueous solutions. Adsorption experiments were conducted by varying parameters such as the...

Adsorption methylene blue +4 more

Focusing on Eco-Friendly Biosorption Method: Removal of reactive yellow-145 by natural Ureolytic Mixed Culture

by Koçyiğit Hasan Manav Esra

Issue 2

Water and wastewater treatment and reuse

In this study, removal of reactive yellow 145 (RY 145) dyestuff by dry biomass of Ureolytic mixed microorganism culture (UMC), existing in domestic wastewater and various industrial wastewater, was studied. Optimum conditions of adsorption efficiency were tested. For this purpose, studies were...

Improvement of the photo-Fenton performance at near neutral pH by the addition of tannic acid from tea leaves waste as a complexing agent in the Pb(II) photo-oxidation

by Tri Wahyuni Endang Kuncoro Hardiana Zahwa Alharrisa Early Suratman Adhitasari

Issue 8

Water and wastewater treatment and reuse

IIntroducing tannic acid from tea leaves waste as a complexing agent of Fe(III) into photo-Fenton process to prevent Fe(OH)3 precipitation at pH 7, and further to increase photo-Fenton activity in the near neutral pH for Pb(II) photo-oxidation is systematically addressed. The photo-Fenton process...

Photo-Fenton near neutral pH +3 more

Rheology of binary cement paste system blended with silica fume and alccofine

by Renisha M. Sakthieswaran N.

Issue 8

Circular Economy and Bioeconomy

The flow properties of the binary cement paste system added with supplementary cementitious materials, effect of polycarboxylate based superplasticizer dosage and their influence on the yield stress and the plastic viscosity were studied. The cementitious materials under the study are silica fume...

Flowability setting time +1 more

Activated Biochar from Gracilaria Edulis Seaweeds: A Novel Biosorbent for Efficient Uranium Ion Removal in Wastewater Treatment

by Titus S. Karthick L. Kiruba S. Srithar A. Kumar Harish Karuna M.S.

Issue 8

Water and wastewater treatment and reuse

The biosorption of uranium ions was explored through batch studies employing activated biochar derived from Gracilaria Edulis seaweeds. A chemical synthesis approach utilizing concentrated sulfuric acid created and activated the adsorbent material. SEM and FTIR measurements were used to characterize...

Adsorption Gracilaria Edulis +4 more

Elimination of nickel and chromium(VI) ions from industerial wastewater by electrodialysis/characteristics/impact of parameters

by Abdipour Hossein Kamani Hossein Hosseinzehi Mehrnaz seyf Mohammad Moein Hossein Moradian Haft Cheshmeh Zeynab

Issue 6

Water and wastewater treatment and reuse

Healthy water is a concern for the world due to rapid population growth and technological advancement. The entry of heavy metals into water as a result of various activities causes water pollution that has persistent effects. In this study, a specially designed electrodialysis cell was used to...

Electrodialysis VI +5 more

Evaluation of Electro-Fenton Process for Removal of Amoxicillin from Simulated Wastewater

by

Ghazi Faisal Naser et al. View all

Issue 5

Water and wastewater treatment and reuse

The purpose of this work is to examine the efficiency of the Electro-Fenton process (Fenton oxidation) for the elimination of amoxicillin from simulated wastewater through response surface methodology (RSM). The effect three operating parameters that were selected for this evaluation were...

Antibiotics wastewater treatment +4 more

Characterization and Calibration of a Photodiode Based Pyranometer for Solar Energy Applications

by

Anandhakumar G et al. View all

Issue 5

Sustainable Energy

In the domain of solar science, a pyranometer assumes a pivotal position, functioning as an indispensable tool for appraising solar irradiance across the abbreviated wavelengths of the solar spectrum, spanning from 300 to 3000 nanometers. Conventional pyranometers typically employ intricate and...

Thermopile Photodiode +3 more

An Efficient Flood Forecasting Model Using an Optimal Deep Belief Network

by

Jagadeesh M et al. View all

Issue 4

Hydrology and Water Resources Management

Floods inflict significant damage globally each year, underscoring the importance of accurate and timely flood prediction to mitigate property loss and life. Precise flood prediction provides governments with crucial preemptive alerts regarding potential flood disasters, enabling timely evacuations...

Flood Prediction Time Series Data +2 more

Electrochemical Treatment for Real Hospital Wastewater and its Future Prospect

by

Yudha Gusti Wibowo et al. View all

Issue 5

Water and wastewater treatment and reuse

Purpose: This study investigates the efficacy of electrochemical remediation techniques in treating hospital wastewater, focusing on parameters including turbidity, color, BOD, COD, DO, coliform, and E. coli. Design/Methodology/Approach: The study conducts a comprehensive analysis of various...

Hospital wastewater electrochemical treatment +2 more

Enhancing biomethane quality via the activation of natural zeolite from Lombok Island

by

Hendry Sakke Tira et al. View all

Issue 5

Sustainable Energy

This study presents the results of the biogas purification test using the fixed-bed column method. As an adsorbent, natural zeolite from the Lombok island Indonesia was used. Zeolite is used for the purpose of purifying biogas produced from the anaerobic digestion (AD) process. To enhance the...

biogas purification Lombok zeolite +2 more

Gap type effect on photocatalytic degradation using newly hydrotalcite nanoposite precursor synthesized by hydrothermal method

by

Imane Bechohra et al. View all

Issue 4

Water and wastewater treatment and reuse

A novel technique involving hydrothermal synthesis was employed to prepare nanocomposite precursors of lamellar double hydroxide based basic mixed oxides. This method extended ongoing research on iron-impregnated hydrotalcite-supported nanomaterials. The iron-based Fe/MgAl-h nanocomposite was...

band gap comparison +4 more

Determination of the Biowall Effective Area to Induce Holistic Sensory Comfort

by

20a30016@student.unika.ac.id et al. View all

Issue 4

Environmental data analysis and modelling

Biowalls are a new phenomenon in interior urban areas, which has proven to contribute positively to sensory comfort. But people use biowalls in different dimensions. Based on field facts, determining the biowall dimensions for human sensory comfort has not emphasized clear principles. The research...

Biowall Biowall Area +5 more

Combining Dissolved Air Flotation (DAF) and Modified Moving Bed Biofilm Reactors (MMBBR) for Synthetic Oily Wastewater Treatment

by

sazan mohammed ali et al. View all

Issue 4

Water and wastewater treatment and reuse

Numerous industrial processes, including petroleum refining, food production, car washes, leather manufacturing, and slaughter houses, generate significant volumes of wastewater due to their substantial water consumption during processing. The presence of oily wastewater has detrimental effects on...

Refinery Car wash +4 more