Muhammad Usman

Muhammad Usman
Technische Universität Hamburg | TUHH · Institute of Water Resources and Water Supply

PhD

About

19
Publications
6,613
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304
Citations
Introduction
My research interests include adsorption, membrane processes, and adsorptive membranes. My most significant publication appears in the Journal of Hazardous Materials (impact factor: 14.224) that can be accessed at the following link: https://doi.org/10.1016/j.jhazmat.2020.123221
Additional affiliations
October 2019 - September 2020
TUTECH Innovations GmbH
Position
  • Research Assistant
Education
October 2016 - October 2020
Technische Universität Hamburg
Field of study
  • Environmental Engineering
October 2013 - July 2016
Technische Universität München
Field of study
  • Sustainable Energy Systems and Environmental Quality

Publications

Publications (19)
Article
Full-text available
The small sized powdered ferric oxy-hydroxide, termed Dust Ferric Hydroxide (DFH), was applied in batch adsorption experiments to remove arsenic species from water. The DFH was characterized in terms of zero point charge, zeta potential, surface charge density, particle size and moisture content. Batch adsorption isotherm experiments indicated that...
Article
Full-text available
Arsenic is among the major drinking water contaminants affecting populations in many countries because it causes serious health problems on long-term exposure. Two low-cost micro-sized iron oxyhydroxide-based adsorbents (which are by-products of the industrial production process of granular adsorbents), namely, micro granular ferric hydroxide (μGFH...
Article
Full-text available
The adsorption of arsenic (V), As(V), on two porous iron oxyhydroxide-based adsorbents, namely, micro-sized tetravalent manganese feroxyhyte (µTMF) and granular ferric hydroxide (µGFH), applied in a submerged microfiltration membrane hybrid system has been investigated and modeled. Batch adsorption tests were carried out to determine adsorption equ...
Article
Full-text available
BACKGROUND: This study reports the development of a dynamic membrane (DM) adsorber by the pre‐depositing powdered‐sized fraction of iron oxide‐based adsorptive material on the surface of a microfiltration(MF) membrane. The aim is to use the developed DM adsorber for arsenate (As(V)) remediation from water by a combined mechanism of adsorptive and...
Article
Full-text available
Threats due to insufficient, inadequate and costlier methods of treating contaminants such as arsenic have emphasized the significance of optimizing and managing the processes adopted. This study was aimed at the complete elimination of arsenic from an aqueous medium with minimum energy consumption using the electrocoagulation process. Arsenic remo...
Article
Full-text available
The increasing demand for using competent and inexpensive methods based on biomaterials, like adsorption and biosorption, has given rise to low-priced alternative biosorbents. In the past few years, Moringa oleifera (MO) has emerged as a green and low-priced biosorbent for the treatment of contaminated waters with heavy metals and dyes, and given i...
Article
Full-text available
Owing to environmental pollution and increasingly strict regulations, heavy metals have attracted the attention of many researchers in various disciplines. Alginate and chitosan derivatives have gained popularity as biosorbents for water treatment. An increase in the number of publications on modified biosorbents for the biosorption of toxic compou...
Article
Increasing discharge of saline wastewater (SWW) from different industries and environmental risks associated with it has compelled researchers to search for efficient treatment methods and safe disposal techniques. Unfortunately, several industries such as agro-food, oil & gas, tannery, and pulp & paper require brine solution units to obtain a fini...
Article
Full-text available
Electrocoagulation (EC) is one of the emerging technologies in water and wastewater treatment as it combines the benefits of coagulation, sedimentation, flotation and electrochemical oxidation. Extensive research efforts implementing EC technology have been executed over the last decade to treat chemical oxygen demand (COD) rich industrial wastewat...
Article
Full-text available
Anion-adsorbing membranes provide an interesting possibility to remove toxic arsenate and chromate from drinking water. A promising way to prepare anion-exchange materials is to introduce positively charged amine groups on polymers. In this study, polyacrylonitrile (PAN) ultrafiltration membranes were modified with amine functionalities on the memb...
Article
Full-text available
As the world human population and industrialization keep growing, the water availability issue has forced scientists, engineers, and legislators of water supply industries to better manage water resources. Pollutant removals from wastewaters are crucial to ensure qualities of available water resources (including natural water bodies or reclaimed wa...
Thesis
Arsenic pollution of drinking waters across the world is one of the most serious water-related problems due to its well-established consequences on human health even at very low concentrations in the lower µg/L range. Among different well-established options for arsenic remediation, the adsorption onto highly efficient commercial iron oxyhydroxide-...
Article
Full-text available
In this study, the ideal adsorption cycle behavior of eight activated carbon and refrigerant pairs is evaluated. The selected pairs are KOH6-PR/ethanol, WPT-AC/ethanol, Maxsorb-III/methanol, Maxsorb-III/CO2, Maxsorb-III/n-butane, Maxsorb-III/R-134a, SAC-2/R32 and Maxsorb-III/R507a. The following cooling performance parameters are evaluated for all...
Article
Full-text available
The global increasing food demand can be met by efficient energy utilization in mechanized agricultural productions. In this study, input-output energy flow along with CO 2 emissions for different wheat production cases (C-I to C-V) were investigated to identify the one that is most energy-efficient and environment-friendly case. Data and informati...
Article
Full-text available
In the 21st century, the poultry sector is a vital concern for the developing economies including Pakistan. The summer conditions of the city of Multan (Pakistan) are not comfortable for poultry birds. Conventionally, swamp coolers are used in the poultry sheds/houses of the city, which are not efficient enough, whereas compressor-based systems are...
Article
Full-text available
The present study considers evaporative cooling and desiccant unit-based airconditioning (AC) options for livestock AC application. In this regard, proposed systems are investigated by means of experiments and thermodynamic investigations. Airconditioning requirements for animals are theoretically investigated and temperature-humidity index (THI) i...
Article
Full-text available
Trace organic compounds (TrOCs), mostly found in secondary effluents of municipal wastewater treatment plants have a potential impact on the environment affecting surface water, groundwater, and especially aquatic ecosystems. The present study focuses on oxidation of five selected TrOCs in column experiments by simulating Soil Aquifer Treatment (SA...

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Projects

Projects (4)
Project
The objective of the project is to modify commercially available porous membranes in order to generate an electrically conductive surface by coating the membrane (e. q. with an ultra-thin layer of metal or other materials). During dead-end filtration of natural raw water (e.g. ground or surface water) and/or oxyanions, a positive potential will be applied to the membrane surface to enhance the removal of target compounds and elements. When electrosorptive removal capacity is exhausted, the applied potential will be reversed to a negative potential in order to desorb the adsorbed compounds on the membrane and regenerate it for further electrosorptive filtration. By this, electrosorptive dead-end UF might reach the NOM removal rates of NF membranes, which are frequently operated in cross-flow mode.
Project
Goal of this project is the development of a new ultrafiltration membrane which is capable of rejecting microbiological pollutants as well as remove oxyanions (arsenate, chromate) by adsorption onto the membrane material. For this, the Institute for Water Resources and Water Supply (TUHH) and the Institute for Polymer Research (Helmholtz-Zentrum Geesthacht) will collaborate interdisciplinary to develop a functionalized polymer membrane.
Project
Arsenic is internationally one of the major pollutants in municipal drinking water and a worldwide concern because of its toxicity and chronic effects on human health. To remove arsenic from drinking water several techniques including adsorption onto iron oxyhdroxide-based adsorbents exist. Granular ferric hydroxide (GEH, Wasserchemie GmbH & Co. KG, Osnabrück) with individual particle size ranges between 0.320 – 2.0 mm can be applied in fixed-bed adsorption filters. However, this porous media is relatively cost intensive. During industrial production of GEH a fine fraction of grains with particle size less than 0.25 mm is generated that cannot be applied in continuous fixed-bed adsorption filtration systems as it leads to rapid clogging of fixed-bed columns. In the current project, arsenic removal is to be achieved using micro-sized fractions of iron oxyhydroxides in an adsorption-low pressure membrane filtration hybrid system Micro-sized fractions of GEH and other adsorbents are to be used for arsenic removal from water in an adsorption-membrane hybrid system at various operation conditions. In hybrid system the entire treatment activity (such as adsorption, liquid-solid separation, and sludge accumulation and withdrawal) will be carried out in a single unit. The results will be compared with known adsorption kinetic models (homogeneous surface diffusion model) and, if necessary, model adjustments will be carried out. Model predictions will be based on adsorption equilibrium and kinetic parameters determined from isotherm and batch adsorption experiments, respectively.