ACHWAQ Herizi

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ACHWAQ Herizi

حريزي أشواق

achwaq.herizi@univ-msila.dz

0672215289

  • Departement of Chemistry
  • Faculty of Sciences
  • Grade PHd
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About Me

Domain

Sciences de la Matière

Filiere

Chimie

Environmental Chemistry

Location

Msila, Msila

Msila, ALGERIA

Code RFIDE

  • 1999-01-03 00:00:00

  • ACHWAQ Herizi birthday

  • 2026-01-19
  • 2026-01-19

    Brown Gold: Sustainable Management and Valorization of Urban Sludge through Anaerobic Digestion

    Anaerobic digestion is a promising strategy for the valorization of sludge generated in wastewater treatment plants, converting high-organic-load residues into renewable energy in the form of biogas. This study investigates the anaerobic digestion of sludge from the Sidi Aïssa wastewater treatment plant (M’Sila, Algeria) under controlled operational conditions. Sludge characterization was performed pre- and post-digestion using physicochemical analyses and advanced techniques, including FTIR, XRD, and SEM-EDX, to assess structural, mineralogical, and surface modifications. The results indicate significant degradation of organic functional groups, reduced crystallinity, and altered surface morphology, correlating with enhanced biodegradability. Biogas production was substantial, demonstrating high methane yield and efficient substrate conversion. These findings confirm the technical feasibility of transforming sludge into a renewable energy vector, providing an effective pathway for sustainable sludge management and optimized energy recovery in wastewater treatment systems. Keywords – Anaerobic digestion, sludge valorization, biogas production, methane yield, physicochemical characterization, wastewater treatment

    Citation

    Achwaq HERIZI , ,(2026-01-19), Brown Gold: Sustainable Management and Valorization of Urban Sludge through Anaerobic Digestion,4th International Conference on Pioneer and Innovative Studies ICPIS 2026,Konya/Turkey

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  • 2025-10-22
  • 2025-10-22

    Sustainable Valorization of Wastewater Sludge: Resource Recovery for Energy and Soil Applications

    The increasing environmental pressures linked to the expansion of wastewater treatment infrastructure in Algeria have intensified the need for effective and sustainable management of residual urban sludge. This study aims to evaluate the valorization potential of sludge produced by the Sidi Aïssa wastewater treatment plant, focusing on its possible recovery as a renewable resource. A comprehensive physico-chemical and mineralogical characterization of sludge samples was performed following standard analytical protocols reported in the literature, enabling a detailed understanding of their composition, mineral phases, and properties. The analysis revealed a high content of organic matter and nutrient-rich components, supporting two valorization pathways: its application as an agricultural soil amendment and its conversion into biogas for renewable energy generation. These results were assessed in terms of their environmental, economic, and operational relevance, highlighting the potential of integrating sludge valorization into sustainable waste management strategies. The findings underline not only the feasibility of reducing environmental burdens associated with sludge disposal but also the opportunity to recover valuable resources, contributing to circular economy models and local energy autonomy. This work provides a practical contribution to the ongoing efforts in resource recovery and environmental protection, with perspectives for further application in similar urban contexts and potential industrial partnerships in the field of renewable energy and natural resource valorization. Keywords: Urban sludge; valorization; renewable energy; biogas; resource recovery.

    Citation

    Achwaq HERIZI , ,(2025-10-22), Sustainable Valorization of Wastewater Sludge: Resource Recovery for Energy and Soil Applications,1 st International Hybrid Seminar: Green Chemistry and Artificial Intelligence: Towards Molecular Design,M'sila

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  • 2025-10-22
  • 2025-10-22

    Development of Activated Carbon from Almond Shells: Physico-Chemical Characterization and Application in Wastewater Treatment

    human well-being worldwide. Among the emerging solutions, adsorption using bio-based adsorbents offers a sustainable and cost-effective approach for removing various contaminants from wastewater. This study explores the valorization of almond shells—an underutilized agro-industrial residue—by converting them into activated carbon. The physicochemical properties of the produced activated carbon were characterized through point of zero charge (pHₚzc) determination and Fourier Transform Infrared Spectroscopy (FTIR). A series of batch adsorption experiments was conducted to assess the influence of operational parameters suchas contact time, pH, adsorbent dose, and temperature on adsorption performance and kinetics. Furthermore, the potential integration of nanomaterials is discussed as a means to enhance the adsorption efficiency and expand the functional scope of these bio-adsorbents. Promoting such renewable, low-cost, and accessible materials contributes to the development of innovative strategies in sustainable wastewater treatment. Keywords: Almond Shells; Activated Carbon; Adsorption; Bio-adsorbents; Wastewater Treatment; Agro- waste; Nanomaterials

    Citation

    Lamya MEFTAH , Achwaq HERIZI , ,(2025-10-22), Development of Activated Carbon from Almond Shells: Physico-Chemical Characterization and Application in Wastewater Treatment,1st International Hybrid Seminar: Green Chemistry and Artificial Intelligence: Towards Molecular Design,M'sila

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  • 2025-03-04
  • 2025-03-04

    Comprehensive Characterization and Energy Valorization of Sewage Sludge for Biogas Production and Waste Reduction

    Water is an essential resource in daily life, and its use generates wastewater, which is treated at wastewater treatment plants (WWTPs) before being released into the environment. This treatment process results in the production of sludge, a by-product that is rich in organic matter and moisture. While various methods exist for sludge disposal, the energetic valorization of this sludge through biogas production presents a promising approach. By anaerobically digesting the sludge, biogas can be generated, which serves as a renewable energy source. The primary objective at the Sidi Aîssa WWTP in M’sila, Algeria, is to reduce the volume of sludge while optimizing its potential for biogas production. This process not only contributes to energy recovery but also helps in managing the environmental impact of sludge disposal. The energetic valorization of sludge as biogas plays a significant role in sustainable development by reducing reliance on conventional energy sources and supporting environmental protection. To evaluate the efficiency of this process, key physico-chemical parameters were monitored during digestion, and the sludge was thoroughly characterized both before and after treatment the anaerobic digestion. Advanced analytical techniques, including FTIR, XRD, and SEM-EDX, were used to analyze changes in functional groups, crystalline structures, and elemental composition. These analyses provided valuable insights into the transformations occurring during digestion. Our findings demonstrate the significant biogas generation potential of the sludge from the Sidi Aîssa WWTP. This study underscores the feasibility of transforming waste into a valuable renewable energy resource, contributing to a cleaner and more sustainable future. Keywords – Anaerobic digestion, sewage sludge, biogas, energy, wastewater

    Citation

    Achwaq HERIZI , ,(2025-03-04), Comprehensive Characterization and Energy Valorization of Sewage Sludge for Biogas Production and Waste Reduction,4th International Conference on Recent Academic Studies ICRAS 2025,Konya/Turkey

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  • 2025-02-18
  • 2025-02-18

    Emergences de technologies durables: caractérisation des pelures d’amandes en charbon actif pour l’optimisation du traitement des eaux usées

    La pollution des eaux est un problème majeur à l'échelle mondiale, avec des répercussions négatives sur l'environnement et la santé humaine. L'adsorption à l'aide de bio-adsorbants est une méthode particulièrement efficace pour éliminer ces contaminants. Ce projet a pour objectif de valoriser les déchets agricoles, notamment les pelures d'amandes, en développant un charbon actif à partir de ces résidus. Nous avons caractérisé notre adsorbant par des mesures du point de charge nulle (pH_pzc). Une série d'expériences a été réalisée pour examiner l'influence du temps de contact, du pH et de la température sur la capacité d'adsorption et la cinétique du processus. La recherche de nouveaux adsorbants, naturellement disponibles, faciles à collecter, économiques et durables, représente un enjeu essentiel pour de nombreux chercheurs dans ce domaine

    Citation

    Lamya MEFTAH , Achwaq HERIZI , ,(2025-02-18), Emergences de technologies durables: caractérisation des pelures d’amandes en charbon actif pour l’optimisation du traitement des eaux usées,2 ndNATIONAL SEMINAR OF PHYSICS, CHEMISTRY AND THEIR APPLICATIONS (NSPCA’25),UNIVERSITY OF MOHAMED EL BACHIR EL IBRAHIMI of Bordj Bou Arreridj, Algeria

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  • 2024-06-13
  • 2024-06-13

    Caractérisation et valorisation agricole et énergétique des boues urbaines de la station d'épuration de Sidi Aïssa

    Dans le contexte actuel de préoccupation environnementale, la gestion des boues résiduaires représente un défi majeur pour notre pays. Avec la multiplication des stations d'épuration en Algérie, la production de boues a atteint des niveaux significatifs. L'objectif du traitement des boues à la station d'épuration de Sidi Aïssa est de réduire leur volume tout en cherchant à les valoriser de diverses manières : en les réutilisant comme engrais agricole pour améliorer la fertilité des sols sans avoir recours à des produits chimiques, en exploitant leur potentiel énergétique sous forme de biogaz, en assurant une gestion efficace, en créant une valeur ajoutée (sous forme d'énergie, d'amendement, de fertilisant, etc.), en atténuant les nuisances olfactives, et ainsi en contribuant à la protection de l'environnement et au développement durable.

    Citation

    Achwaq HERIZI , ,(2024-06-13), Caractérisation et valorisation agricole et énergétique des boues urbaines de la station d'épuration de Sidi Aïssa,1 ère Journée de Formation et Portes Ouvertes,M'sila

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