Article
Energy & Fuels
Ankit Jadhav, Israr Ahmed, A. G. Baloch, Harshit Jadhav, Sabzoi Nizamuddin, M. T. H. Siddiqui, Humair Ahmed Baloch, Sundus Saeed Qureshi, Nabisab Mujawar Mubarak
Summary: This study reports hydrothermal liquefaction technology carried out on local Malaysian oil palm fronds to produce solid bio-char and liquid bio-oil. Observations showed that bio-oil yield percentage increased and bio-char yield percentage decreased with higher reaction temperature and time, leading to improved combustion properties of bio-char and bio-oil. Major chemical compounds identified in bio-oil by GC-MS were phenolic compounds and their derivatives, alcohols, ketones, and esters.
BIOMASS CONVERSION AND BIOREFINERY
(2021)
Article
Chemistry, Multidisciplinary
Chutanan Muangsuwan, Warangthat Kriprasertkul, Sakhon Ratchahat, Chen-Guang Liu, Pattaraporn Posoknistakul, Navadol Laosiripojana, Chularat Sakdaronnarong
Summary: The hydrodeoxygenation process of bio-oil derived from palm empty fruit bunch in glycerol was studied using Ni- and Co-based catalysts on an Al2O3 support in a rotating-bed reactor. The NiMo/Al2O3 catalyst showed the most promising results with improved bio-oil quality in terms of oxygen reduction and increased high heating value. The olefins cyclopentanone and cyclopentene were identified as the main components in the hydrodeoxygenated bio-oil, which can be used for the synthesis of jet-fuel range cycloalkanes.
Article
Engineering, Environmental
Jayaseelan Arun, Kannappan Panchamoorthy Gopinath, PanneerSelvam SundarRajan, Sivaprasad Shyam, Namasivayam Mayuri, Ramachandran Sivaramakrishnan, Arivalagan Pugazhendhi
Summary: In this study, the HDO process was used to upgrade liquefied bio-oil from Nostoc punctriforme biomass, with RSM optimization resulting in bio-oil properties meeting ASTM standards. Mixing bio-oil with diesel at a 50% ratio reduced brake thermal efficiency while decreasing NOx emissions and slightly increasing CO emissions. This research emphasizes the potential of microalgae fuels as a renewable energy resource with reduced greenhouse gas emissions.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Agricultural Engineering
Jeerattikul Kaharn, Chanoknunt Khaobang, Amornrat Suemanotham, Vittaya Punsuvon, Chinnathan Areeprasert
Summary: This study focuses on the conversion of high-moisture biomass into phenolic-rich bio-oil using non-catalytic hydrothermal liquefaction. The results show a depolymerization rate of 83-97% and a strong antioxidant activity of the extracted bio-oil, indicating its potential for future research and applications.
BIOMASS & BIOENERGY
(2022)
Article
Chemistry, Multidisciplinary
Mohammed Abobakr Al-Maari, Mohd Azmier Ahmad, Azam Taufik Mohd Din, Hamizura Hassan, Ahmed Mubarak Alsobaai
Summary: Co-pyrolysis of palm wastes with plastics can increase bio-oil yield, with different effects on the chemical composition depending on the types of waste and plastic used.
ARABIAN JOURNAL OF CHEMISTRY
(2021)
Article
Energy & Fuels
Javier A. Jimenez Forero, Tuyen H. T. Tran, Tana Tana, Adrian Baker, Jorge Beltramini, William O. S. Doherty, Lalehvash Moghaddam
Summary: This study investigated the effect of solvent on the stability of bio-oils produced from the hydrothermal liquefaction of sugarcane bagasse. It was found that the ethanol/water solvent mixture produced the most stable bio-oil compared to other solvents. The light oils fractionated by solvent extraction were also more stable than their corresponding bio-oils. The stabilities of the oils were related to alkylation, esterification, and acetalization reactions. This study demonstrated that the HTL of sugarcane bagasse in the presence of ethanol/water produces high-quality oils with long shelf-lives.
Article
Biotechnology & Applied Microbiology
Rubia Idris, William Woei Fong Chong, Atikah Ali, Sidah Idris, Mohd Faizal Hasan, Farid Nasir Ani, Cheng Tung Chong
Summary: In this study, oil palm empty fruit bunch (EFB) was subjected to microwave-induced fast pyrolysis, and it was found that the addition of activated carbon as a microwave susceptor significantly increased the bio-oil yield, resulting in bio-oil enriched with phenolic compounds. This promising method shows potential for producing highly selective mono-phenol rich bio-oil from biowaste.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Chemistry, Multidisciplinary
Bulutcem Ocal, Asli Yuksel
Summary: The rapidly increasing global energy demand has led to the need for finding green, renewable, and sustainable alternative sources of energy. Bio-oil, derived from biomasses via liquefaction, is a promising candidate to replace fossil fuels. In this study, the thermal liquefaction of oak wood particles was carried out using different solvents, and the results showed that 1,4-dioxane yielded the highest bio-oil production.
Article
Engineering, Chemical
N. M. Nurul Suziana, N. Asikin-Mijan, Z. Zulkarnain, Y. H. Taufiq-Yap
Summary: Catalytic hydrothermal liquefaction of empty fruit bunch (EFB) with a bimetallic modified zeolite catalyst (BaNi, BaLa and BaCe/CHZSM5) effectively produces bio-oil. The addition of Ni, La, and Ce to the Ba/CHZSM5 catalyst improves its physicochemical properties and catalytic performance. The most effective catalyst is Ba1La2/CHZSM5, which has a high surface area and acidic sites, leading to enhanced catalytic activity in the conversion of EFB to bio-oil. Compared to other bimetallic modified catalysts, Ba1La2/CHZSM5 shows a higher abundance of desirable aromatic and aliphatic hydrocarbons and a lower content of oxygenated compounds in the produced bio-oil.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2022)
Article
Environmental Sciences
Cristina E. Almeida-Naranjo, Elvia Gallegos, Elizabeth Dominguez, Paola Gutierrez, Vladimir Valle, Alex Dario Aguilar, Alexis Debut, Catalina Vasco
Summary: This study investigated the use of oil palm empty fruit bunch fibers (OPEFBF) as a filter-bed material in biofilters for the removal of organic matter and nutrients. The results showed that OPEFBF had high efficiencies in removing chemical oxygen demand (COD), total nitrogen, and total phosphorus. Batch adsorption tests also demonstrated that OPEFBF had a removal rate of over 90% for methylene blue, with large post OPEFBF being the most efficient. Therefore, OPEFBF could be a viable alternative for removing contaminants from wastewater.
Article
Polymer Science
Kah Yen Lim, Tengku Arisyah Tengku Yasim-Anuar, Nur Sharmila Sharip, Farhana Aziz Ujang, Hazwani Husin, Hidayah Ariffin, Paridah Md Tahir, Xinping Li, Seng Hua Lee, Mohd Termizi Yusof
Summary: This study aims to produce environmental-friendly phenol-formaldehyde resin by using phenolated lignin and bio-oil extracted from oil palm empty fruit bunch black liquor to substitute phenol. The modified resins were prepared by heating a mixture of phenol-phenol substitute with NaOH and formaldehyde solution, and the physical properties of the resins were tested. Results showed that the substitution of 5% phenolated lignin improved the properties of phenol-formaldehyde resin. The production process of phenolated lignin-phenol-formaldehyde resin was also environmentally beneficial.
Article
Energy & Fuels
Pei Ling Tang, Wai Lun Hong, Chen Son Yue, Shuhaida Harun
Summary: This study investigates the use of palm oil mill effluent (POME) as a solvent to extract lignin and phenolics from oil palm empty fruit bunch fiber (OPEFBF). Results show that POME containing 5% w/w NaOH is the best solvent, producing the highest yield of lignin and phenolics. The chemical oxygen demand (COD) of the solvent increases after treatment but decreases significantly after lignin precipitation.
BIOMASS CONVERSION AND BIOREFINERY
(2023)
Article
Engineering, Chemical
Laura M. Orozco, Fernando Cardeno, David A. Echeverri, Luis A. Rios
Summary: Biofuels have emerged as alternative options for reducing CO2 emissions. The use of bio-syngas obtained from palm empty fruit bunches in the hydrotreating of palm oil has shown similar results in oil conversion and renewable diesel purity compared to using pure H-2. The presence of CO in bio-syngas can be overcome by regenerating the catalyst or converting CO into CO2 and H-2 through the water-gas shift reaction. This eliminates the need for an expensive H-2 purification process.
CHEMICAL ENGINEERING & TECHNOLOGY
(2022)
Article
Thermodynamics
Maya Sarah, M. Rizky Ramadhan, Annida Zahra, Isti Madinah, Seri Maulina, Erni Misran
Summary: This study evaluates the performance of a continuous microwave device in the sterilization of oil palm fruits spikelet. The study found that by using the minimum power density, appropriate residence time, and temperature, good quality palm oil can be produced.
CASE STUDIES IN THERMAL ENGINEERING
(2023)
Article
Energy & Fuels
Jianwen Lu, Guifang Fan, Mingde Yang, Yulong Wu
Summary: The interaction between protein and glucose influences the nitrogen content and oxygen content in the bio-oil during HTL, while the carbon in glucose does not participate in the formation of certain compounds. The results provide insight into the interaction mechanism between protein and glucose for further studies.
Article
Energy & Fuels
Pooya Lahijani, Maedeh Mohammadi, Abdul Rahman Mohamed
Summary: This study investigates the co-gasification of tire char and rambutan peel. The results show that high proportion of tire char inhibits the gasification reaction, while higher content of biomass promotes the reaction. In addition, natural catalysts in the biomass also have a synergistic effect on the reaction.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Environmental Sciences
Nor Fazila Khairudin, Maedeh Mohammadi, Abdul Rahman Mohamed
Summary: This study focused on developing alumina-supported cobalt (Co/Al2O3) catalysts for dry reforming of methane (DRM) with high catalytic activity and long-term stability, attributed to the small Co particle size with good dispersion on the alumina support and strong metal-support interaction.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Environmental Sciences
S. Anthonysamy, P. Lahijani, M. Mohammadi, A. R. Mohamed
Summary: This study investigated the low-temperature oxidative uptake of NO on alkali-modified biochar, showing that the NO capture capacity was significantly improved after modification. The adsorption capacity of KOH-activated biochar reached 87.0 mg/g at 30 degrees C, mainly attributed to factors like oxygen functionalities and carbon defects.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2022)
Article
Materials Science, Ceramics
Maher T. Alshamkhani, Pooya Lahijani, Keat Teong Lee, Abdul Rahman Mohamed
Summary: In this study, the switching voltage technique was used to efficiently exfoliate graphite in eutectic molten salts. The exfoliated graphene samples exhibited high production yields, low ID/IG ratios, and good electrical conductivities. Compared to constant voltage exfoliation, the switching voltage technique produced smoother graphene flakes with less agglomeration, crumbling, and wrinkling. Characterization analysis confirmed the smaller crystallite size, lower thickness, and higher quality and purity of the exfoliated graphene prepared using the switching voltage technique.
CERAMICS INTERNATIONAL
(2022)
Article
Environmental Sciences
Norhusna Mohamad Nor, Lau Lee Chung, Abdul Rahman Mohamed
Summary: The utilization of microwave heating and nitrogen-modification can generate adsorbents with superior performance for efficient removal of hydrogen sulfide (H2S). The modified palm shell activated carbon synthesized using microwave heating exhibited excellent properties, including a large surface area and new pore structures. Microwave heating assisted in the development of the adsorbent's properties and contributed to high removal of H2S at low adsorption temperature.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Review
Energy & Fuels
Nuradibah Mohd Amer, Pooya Lahijani, Maedeh Mohammadi, Abdul Rahman Mohamed
Summary: This article reviews the recent studies on biochar as a material for carbon capture, including its preparation and modification methods, and the influence on its physical, chemical, and physicochemical properties. Biochar exhibits high CO2 adsorption performance and sustainable performance, which are crucial for large-scale CO2 capture.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Review
Chemistry, Physical
Lutfi Kurnianditia Putri, Boon-Junn Ng, Wee-Jun Ong, Siang-Piao Chai, Abdul Rahman Mohamed
Summary: This article reviews the potential, design strategies, and material progress of photoelectrochemical CO2 reduction reaction (PEC CO2RR), as well as summarizes and discusses various photocathode semiconductor materials. Finally, perspectives on the design of photocathodes for CO2RR and new paradigms in the field are proposed.
ADVANCED ENERGY MATERIALS
(2022)
Article
Energy & Fuels
Anis Natasha Shafawi, Pooya Lahijani, Maedeh Mohammadi, Abdul Rahman Mohamed
Summary: Sequential ultrasonication and metal modification can enhance the CO2 capture capacity of biochar, but no synergistic effect was observed when they were applied together. Ultrasonication and metal modification can modulate the physicochemical properties of biochar, affecting its CO2 capture performance. The Avrami kinetic model can better predict the CO2 adsorption on biochar.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Review
Chemistry, Inorganic & Nuclear
Bashaer Mahmoud Namoos, Abdul Rahman Mohamed, Khozema Ahmed Ali
Summary: The desire to improve photocatalytic activity is increasing, especially in semiconductors. Porous photocatalysts have been synthesized to improve surface area and reduce recombination of electron-hole pairs. This paper reviews recent works on porous photocatalysts, with a focus on synthesis and fabrication methods. The topotactic transition technique is the best method for metal oxide porous photocatalysts, while self-organizing blocks are the best method for polymeric porous photocatalysts, especially for growing and fixing 1D semiconductor nanomaterials on 3D and 2D semiconductors on 2D. The hard template method allows for better control of particle shape and size, but the template removal is non-ecofriendly, making the soft template method more favorable. The etching method, on the other hand, is suitable for fabricating porous photocatalysts through a membrane by utilizing the electrical charge created by moving electrons in the electrolyte as a driving force.
JOURNAL OF SOLID STATE CHEMISTRY
(2023)
Article
Geochemistry & Geophysics
Vahid Birjandi, Sayyed-Hassan Tabatabaei, Reza Mastouri, Hossein Mazaheri, Rasoul Mirabbasi
Summary: In this study, copula functions were used for multivariate analysis of groundwater quality variables in Shahrekord plain, Iran. The results showed a high correlation between SAR-Na and EC-TDS variables, and the Joe copula function was chosen as the best fitted copula function for multivariate analysis of two quality variables in a well. For inter-well analysis, the Clayton copula function was selected. Comparisons with geostatistical methods showed that the proposed IWA method has higher efficiency and acceptable accuracy.
Review
Engineering, Environmental
Michelle Mei Xue Lum, Kim Hoong Ng, Sin Yuan Lai, Abdul Rahman Mohamed, Abdulkareem Ghassan Alsultan, Yun Hin Taufiq-Yap, Mei Kee Koh, Mohamad Azuwa Mohamed, Dai-Viet N. Vo, Manjulla Subramaniam, Kyle Sebastian Mulya, Nathasya Imanuella
Summary: Air pollution from untreated sulfur dioxide-rich flue gas is a major environmental and human health issue. Many sulfur dioxide removal technologies have been developed, but conventional methods generate by-products. Catalytic reduction of sulfur dioxide offers a sustainable solution with high efficiency and the recovery of valuable solid sulfur. This review discusses recent advances and the potential of this technology.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Review
Chemistry, Multidisciplinary
Xin-Quan Tan, Wuwei Mo, Xinlong Lin, Jian Yiing Loh, Abdul Rahman Mohamed, Wee-Jun Ong
Summary: The electro/photocatalytic CO2 reduction reaction (CO2RR) is an important approach for the synthesis of renewable fuels and value-added chemicals. MXenes, a type of 2D transition metal carbides, nitrides, and carbonitrides, show great potential in electrocatalysis and photocatalysis due to their unique properties. This review provides an overview of recent advances in MXene-based catalysts for the electrocatalytic and photocatalytic CO2RR, including their structure, synthesis pathways, and activity enhancement strategies. The review also discusses the current state of research in the field and proposes future perspectives.
Article
Engineering, Environmental
Maher T. Alshamkhani, Lutfi Kurnianditia Putri, Pooya Lahijani, Keat Teong Lee, Abdul Rahman Mohamed
Summary: In this study, an electrochemically exfoliated graphene/graphite carbon nitride ((EG)/g-C3N4) heterojunction photocatalyst was synthesized for CO2 photoreduction to methane. The best-performing photocatalyst (0.075 EG-CN) showed a significant enhancement in CH4 production with 98.6% selectivity after 6 hours of light irradiation compared to pure CN. The developed photocatalyst exhibited high stability after consecutive cycles of CO2 photoreduction to CH4.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Review
Chemistry, Physical
Xin-Quan Tan, Sue-Faye Ng, Abdul Rahman Mohamed, Wee-Jun Ong
Summary: This article introduces the recent advances in experimental and computational studies on the interfacial design of 0D nanostructures on 2D graphitic carbon nitride (g-C3N4). By engineering point-to-face contact between 2D g-C3N4 and 0D nanomaterials, heterojunction interfaces can be formed, which is beneficial for photocatalytic reactions. Different types of 0D nanostructures and synthesis strategies for photocatalytic applications are discussed.
Article
Chemistry, Physical
Jie-Yinn Tang, Chen-Chen Er, Lling-Lling Tan, Yi-Hao Chew, Abdul Rahman Mohamed, Siang-Piao Chai
Summary: This study systematically unraveled the effect of defect engineering on the properties and catalytic performance of graphitic carbon nitride (g-C3N4). By introducing various defect sites, the study achieved improved charge separation efficiency and CO2 adsorption affinity in g-C3N, providing a more feasible pathway for CO2 reduction.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Agricultural Engineering
Yinping Xiang, Meiying Jia, Rui Xu, Jialu Xu, Lele He, Haihao Peng, Weimin Sun, Dongbo Wang, Weiping Xiong, Zhaohui Yang
Summary: This study investigated the impact of the non-antibiotic pharmaceutical carbamazepine on antibiotic resistance genes (ARGs) during anaerobic digestion. The results showed that carbamazepine induced the enrichment of ARGs and increased the abundance of bacteria carrying these genes. It also facilitated microbial aggregation and intercellular communication, leading to an increased frequency of ARGs transmission. Moreover, carbamazepine promoted the acquisition of ARGs by pathogens and elevated their overall abundance.
BIORESOURCE TECHNOLOGY
(2024)
Review
Agricultural Engineering
Weixin Zhao, Tianyi Hu, Hao Ma, Dan Li, Qingliang Zhao, Junqiu Jiang, Liangliang Wei
Summary: This review summarizes the effects and potential mechanisms of biochar on microbial behavior in AD systems. The addition of biochar has been found to promote microbial colonization, alleviate stress, provide nutrients, and enhance enzyme activity. Future research directions include targeted design of biochar, in-depth study of microbial mechanisms, and improved models.
BIORESOURCE TECHNOLOGY
(2024)
Review
Agricultural Engineering
Christina Karmann, Anna Magrova, Pavel Jenicek, Jan Bartacek, Vojtech Kouba
Summary: This review assesses nitrogen removal technologies in reject water treatment, highlighting the differences in environmental impacts and economic benefits. Partial nitritation-anammox shows potential for economic benefits and positive environmental outcomes when operated and controlled properly.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Wei-Hao Huang, Ying-Ju Chang, Duu-Jong Lee
Summary: This study modified pinecone biochar with layered double hydroxide (LDH) to enhance its adsorption capacity for heavy metal and phosphate ions. The LDH-biochar showed significantly improved adsorption capacities for Pb2+ and phosphate, and a slight increase for Cu2+ and Co2+. The LDH layer enhanced the adsorption through various mechanisms.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Chao Song, Fanfan Cai, Shuang Yang, Ligong Wang, Guangqing Liu, Chang Chen
Summary: This paper developed a machine learning model to predict the biochemical methane potential during anaerobic digestion. Model analysis identified lignin content, organic loading, and nitrogen content as key attributes for methane production prediction. For feedstocks with high cellulose content, early methane production is lower but can be improved by prolonging digestion time. Moreover, lignin content exceeding a certain value significantly inhibits methane production.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Sang Min Lee, Ju Young Lee, Ji-Sook Hahn, Seung-Ho Baek
Summary: This study successfully developed an efficient platform strain using Yarrowia lipolytica for the bioconversion of renewable resources into adipic acid, achieving a remarkable increase in production level.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Sefkan Kendir, Matthias Franzreb
Summary: This study presents a novel approach using magnetic separation to efficiently harvest freshwater microalgae, Chlorella vulgaris. By combining pH-induced calcium phosphate precipitation with cheap natural magnetite microparticles, harvesting efficiencies up to 98% were achieved in the model medium.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Ishaq Kariim, Ji-Yeon Park, Wajahat Waheed Kazmi, Hulda Swai, In-Gu Lee, Thomas Kivevele
Summary: The impact of reaction temperature, residence time, and ethanol: acetone on the energy compositions and yield enhancement of biocrudes was investigated. The results showed that under appropriate conditions, biocrudes with high energy and low oxygen content can be obtained, indicating a high potential for utilization.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Xiyue Zhang, Xiyao Li, Liang Zhang, Yongzhen Peng
Summary: Intermittent aeration is an innovative approach to enhance nitrogen removal in low carbon-to-nitrogen ratio municipal sewage, providing an efficient strategy for the continuous plug-flow AOA process.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Xu Yang, Mahmoud Mazarji, Mengtong Li, Aohua Li, Ronghua Li, Zengqiang Zhang, Junting Pan
Summary: This study investigated the impact of magnetite on the nitrogen cycle of pig manure biostabilisation. The addition of magnetite increased N2O emissions and decreased NH3 emissions during composting. It also increased the total nitrogen content but should be considered for its significant increase in N2O emissions in engineering practice.
BIORESOURCE TECHNOLOGY
(2024)
Review
Agricultural Engineering
Ty Shitanaka, Haylee Fujioka, Muzammil Khan, Manpreet Kaur, Zhi-Yan Du, Samir Kumar Khanal
Summary: The market value of microalgae has exponentially increased in the past two decades, thanks to their applications in various industries. However, the supply of high-value microalgal bioproducts is limited due to several factors, and strategies are being explored to overcome these limitations and improve microalgae production, thus increasing the availability of algal-derived bioproducts in the market.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Martin Kerner, Thorsten Wolff, Torsten Brinkmann
Summary: The efficiency of using enriched CO2 from flue gas for large-scale production of green microalgae has been studied. The results show that the use of membrane devices and static mixers can effectively improve the CO2 recovery rate and maintain the suitable pH and temperature during cultivation, achieving a more economical and sustainable microalgae production.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Rui Ma, Ji Li, Rd Tyagi, Xiaolei Zhang
Summary: This review summarizes the microorganisms capable of using CO2 and CH4 to produce PHAs, illustrating the production process, factors influencing it, and discussing optimization techniques. It identifies the challenges and future prospects for developing economically viable PHAs production using GHGs as a carbon source.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Bing Wang, Peng Zhang, Xu Guo, Xu Bao, Junjie Tian, Guomin Li, Jian Zhang
Summary: The addition of zeolite in the co-composting of chicken manure and straw significantly reduced the emissions of ammonia and N2O, and increased the nitrate content. Zeolite also promoted the abundance of nitrification genes and inhibited the expression of denitrification genes.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Rohit Dey, Franziska Ortiz Tena, Song Wang, Josef Martin Messmann, Christian Steinweg, Claudia Thomsen, Clemens Posten, Stefan Leu, Matthias S. Ullrich, Laurenz Thomsen
Summary: This study investigated the operation of a 1000L microalgae-based membrane photobioreactor system for continuous secondary wastewater treatment. The research focused on a green microalgae strain called Desmodesmus sp. The study aimed to understand key trends and optimization strategies by conducting experiments in both summer and winter seasons. The findings showed that maintaining low cell concentrations during periods of light inhibition was beneficial for nutrient uptake rates. Effective strategies for enhancing algae-based wastewater treatment included cell mass recycling and adjusting dilution rates based on light availability.
BIORESOURCE TECHNOLOGY
(2024)