Cheng-Di Dong

National Kaohsiung University of Science and Technology · Marine Environmental Engineering

The distribution, enrichment, and accumulation of heavy metals in the sediments, especially those at the vicinity of tributary estuaries of Kaohsiung Harbor, Taiwan were investigated. Sediment samples from six locations in the Kaohsiung Harbor were collected quarterly in the period from 2002 to 2005 and characterized for metal content (e.g., Hg, Pb...

Chemical oxidation reactions involving hydroxyl radicals have been extremely effective in the destruction of organic pollutants. These advanced chemical oxidation processes (AOP) generally use a combination of oxidation agents (such as H2O2 or O3), irradiation (such as uv or ultrasound), and catalysts (such as metal ions or photocatalysts) as a mea...

Polycyclic aromatic hydrocarbon (PAH) contamination and toxicity levels in the surface sediments of Kaohsiung Harbor, Taiwan were evaluated using sediment quality guidelines (SQGs) and toxic equivalent factors. Eighty surface sediment samples were collected from twenty locations in Kaohsiung Harbor for PAH analysis using gas chromatography/mass spe...

Marigold flower-like CoMo layered double hydroxide (LDH) was decorated on biochar derived from cow manure (CoMo@BC) to act as an efficient activator for peroxymonosulfate (PMS), enabling the degradation of Bisphenol A (BPA) in water. The CoMo@BC/PMS system can eliminate up to 98 % of BPA at a concentration of 0.044 mM within 15 min. High efficacy i...

🎉 Excited to share that my latest research paper on persistent organic pollutants (POPs) is now published! 🚀🌱 For those interested in exploring the findings, feel free to check it out and cite if it’s helpful to your work. Let’s keep pushing the boundaries of environmental science! #Research #POPs #ScienceForSustainability

The pervasive issue of microplastics in aquatic environments presents a formidable challenge to traditional water treatment methodologies, including those utilizing KMnO4. This study pioneers advanced oxidation processes (AOPs) method aimed at improving the degradation of PE microplastics by employing a dual treatment strategy that combines KMnO4 o...

The non-conventional fossil fuels despite serving as significant contributors to modern energy needs have raised concerns due to their adverse environmental effects and rapid depletion, prompting both the scientific community and governments to seek renewable energy sources, such as biofuels. Pineapple leaf (PL) waste biomass represents an appropri...

Abstract Harvesting costs, accounting for 15-30% of total expenses, are a major bottleneck in microalgae biorefinery due to low cell density and energy-intensive processes. This study investigates Fe3O4-Urea (Fe@urea) nanocomposites (NCs) to replace conventional methods and improve the harvesting efficiency (HE) of Chlorella zofingiensis, known for...

Per- and poly-fluoroalkyl substances (PFAS) are persistent organic pollutants that severely threaten the environment and human health due to their distinct chemical composition, extensive production, widespread distribution, bioaccumulation in nature, and long-term persistence. This review focuses on the occurrence and sources of PFAS in seafood, w...

Nanocellulose produced by bacteria has attracted worldwide attention owing to its excellent mechanical properties, water retention capacity, non-toxicity, antibacterial ability, and high plasticity, making it applicable in various fields. In this study, the collected aquaculture waste biomass such as Chaetomorpha crassa and C. linum were hydrolyzed...

In recent years, microbial platforms for biofuels and nutraceuticals have gained recognition as sustainable alternatives. This study investigates titanium dioxide nanoparticles’ effect on lipid and omega fatty acid production in Thraustochytrium sp. Both titanium dioxide and nitrogen starvation independently enhance lipid content, with a synergisti...

The use of macroalgae for food has been extensive in Asia historically. However, there has been a renewed interest at present in macroalgae due to its recognition as a potential carbon capture agent and a blue carbon donor besides their utility in biofuel production. Bioplastics is an umbrella term for a wide variety of polymers that can be either...

The prevalence of heavy metals in aquatic ecosystems threatens health and the environment, highlighting the need for sustainable removal methods. Biochar is emerging as a promising eco-friendly adsorbent due to its unique physicochemical properties. This study extensively evaluates innovative strategies and novel approaches to enhance biochar's eff...

The necessity to address environmental issues has driven efforts toward exploring sustainable bio-based materials as a viable alternative to conventional energy sources. The current study explores the utilization of cocoa pod husk (CPH) biomass for lignin extraction and cellulose production, aiming to contribute to the eco-friendly production of li...

This study investigates the effectiveness of water hyacinth-derived biochar in removing As(V) from low-concentration aqueous solutions, similar to groundwater, and examines the impact of elevated NO3− concentrations. Biochar was produced by pyrolyzing water hyacinth at 550 °C for 2h and subsequently modified with KOH and FeCl3 solutions. The modifi...

Background: The increasing demand for renewable energy sources has sparked interest in biofuels derived from green seaweeds, owing to their abundance and high carbohydrate content. Ulva ohnoi, harvested from Taiwan's shores, presents a promising candidate for bioethanol production due to its favorable characteristics. Methods: In this study, Ulva o...

This study introduces a novel metallic-MOF composite, MIL-100@ZIF-67, anchored on MXene nanosheets, designated as MIL-100@ZIF-67@MXene, for the enhanced degradation of carbamazepine (CBZ) and activation of peroxymonosulfate (PMS). The efficacy of...

In this research, the dimensional catalysts of pure g-C3N4 photocatalysts (1D, 2D, and 3D) were investigated for the reduction of the highly toxic/carcinogenic Cr(VI) under visible light irradiation. The catalysts underwent explanation through various surface analysis techniques. According to the BET data, the specific surface area of the 3D cataly...

The escalating global challenges of food security, waste management, and environmental sustainability have necessitated the application of novel green approaches to utilize agro-industrial food waste as a valuable bioresource. Enzymatic conversion of food waste into high-value bioproducts emerges as one of the promising solutions to address these i...

This study presents Sargassum duplicatum-derived biochar as an efficient solution for removing heavy metals from various water sources, addressing a critical sustainability need. Achieving a remarkable adsorption efficiency of 617 mg/g within 4 h at pH 5 and 150 rpm, surpassing previous findings, the biochar demonstrates exceptional efficacy. Impre...

The global focus on wastewater treatment has intensified in the contemporary era due to its significant environmental and human health impacts. Pharmaceutical compounds (PCs) have become an emerging concern among various pollutants, as they resist conventional treatment methods and pose a severe environmental threat. Advanced oxidation processes (A...

Cellulose is the most abundant renewable polymer on Earth which is extensively distributed in diverse ecosystems. It is present in higher plants, marine organisms, and also produced through microbial processes in organisms like algae, fungi, and bacteria. From an industrial perspective, the semicrystalline nature of cellulose present in different p...

n this study, biochar derived from chestnut shells was synthesized through pyrolysis at varying temperatures from 300 °C to 900 °C. The study unveiled that the pyrolysis temperature is pivotal in defining the physical and chemical attributes of biochar, notably its adsorption capabilities and its role in activating peracetic acid (PAA) for the effi...

The current investigation synthesized a composite known as ZIF-67@MnOOH@GO, which serves as a catalyst activator for peroxymonosulfate (PMS) to amplify the catalytic degradation of ciprofloxacin (CIP). The study demonstrates that utilizing a 50 mg/L dosage of the composite with 0.2 mM PMS resulted in a 97.8 % reduction of CIP concentration at 0.02...

This article reviews various synthesis and modification methods employed for valorization of marine-derived wastes into green sorbents, which show promise for mitigating pollutants from diverse sources. This approach is particularly relevant for promoting sustainable development in shellfish processing industry. In-depth discussions cover the physi...

This study presents the synthesis of a novel composite catalyst, ZIF-67, doped on sodium bicarbonate-modified biochar derived from kumquat peels (ZIF-67@KSB3), for the enhanced activation of peracetic acid (PAA) in the degradation of acetaminophen (APAP) in aqueous solutions. The composite demonstrated a high degradation efficiency, achieving 94.3%...

The interest in algae-derived bioactive compounds has grown due to their potential therapeutic efficacy against a range of diseases. These compounds, derived from proteins, exhibit diverse functions and profound pharmacological effects. Recent research has highlighted the extensive health benefits of algae-derived bioactive compounds, positioning t...

The current study aimed to assess the effectiveness of biochar formed from algae in the removal of Cr(VI) through the process of impregnating brown algae Sargassum hemiphyllum with KHCO3. The synthesis of KHCO3-activated biochar (KBAB-3), demonstrating remarkable adsorption capabilities for Cr(VI), was accomplished utilizing a mixture of brown alga...

Bioactive polysaccharides and oligosaccharides were successfully extracted from three distinct seaweeds: Sargassum sp., Graciallaria sp., and Ulva sp. utilizing various extraction techniques. The obtained polysaccharides and oligosaccharides were subjected to comprehensive characterization, and their potential antioxidant properties were assessed u...

In the current study, ten lactic acid bacteria (LAB) isolates exhibiting anti-α-glucosidase activity were isolated from fermented food. It is directed at novel supplementary diets to prevent/improve diet-induced carbohydrate metabolism disorders and related chronic diseases. Moreover, to evaluate their safety, functionality, and probiotic potential...

The potential of hydrogen as a future energy source is promising due to its high gravimetric energy density, abundance, environmental sustainability, and lack of emissions post-ignition. Researchers are currently investigating various electrocatalysts for hydrogen evolution reactions (HER) through water splitting. This paper provides an informative...

An innovative bimetallic (Co and Mn) composite catalyst, Mn/ZIF-67@GO, was synthesized for effective peroxymonosulfate (PMS) activation and rapid degradation of ibuprofen (IBP). The Mn/ZIF-67@GO/PMS system demonstrates remarkable catalytic performance, achieving a 98 % degradation of a 0.05 mM IBP solution within 15 min. This high efficiency is mai...

A baseline study was undertaken on polycyclic aromatic hydrocarbons (PAHs) in phytoplankton. Plankton samples from six stations (duplicates) in Kaohsiung Harbor (KH), Taiwan along with a phytoplankton control sample afar from the harbor, were collected. We applied size-fractionation to isolate phytoplankton (55–120 μm), followed by sedimentation an...

Herein, a 0D/3D NiCo2O4@g-C3N4 Z-scheme photocatalyst was successfully synthesized to degrade ibuprofen (IBP) in a photocatalytic system in the presence of PMS under visible light. The 5%-NiCo2O4@g-C3N4 exhibited the highest IBP degradation performance at 96% IBP removal in 60 min in the near-neutral pH range of 6 to 9. Factors such as PMS concentr...

The biorefinery approach ensures a sustainable source of valuable fatty acids and opens up new avenues for their application in healthcare industries. Recent studies highlight the health benefits of omega-PUFAs, spurring the search for cost-effective production methods. Microbial platforms are promising for high-yield PUFA production, with ω-3 domi...

Diphenylamine (DPA), a toxic pollutant in wastewater and food contaminants, has severe environmental impacts. In this study, a composite material comprising hydroxyapatite and graphene oxide (HAp/GO) was successfully prepared and used to modify a GCE electrode. This composite was employed to construct an electrochemical sensor to detect hazardous D...

Background Environmental concerns are escalating globally due to rising pollution, with heavy metals like vanadium posing health risks even at 2 ppm. Industries like steel and semiconductors discharge vanadium, presenting environmental hazards. However, there's a lack of sustainable treatment methods for vanadium removal. This study aims to develop...