Article
Chemistry, Multidisciplinary
Tlou Nelson Selepe, Remilekun Akanbi, Tsolanku Sidney Maliehe, Kgabo Moganedi, Peter Masoko
Summary: Bioflocculant produced by Bacillus megaterium has potential industrial applications in wastewater treatment due to its effectiveness, innocuousness, and environmental friendliness.
APPLIED SCIENCES-BASEL
(2022)
Article
Food Science & Technology
Xuan Wang, Liang Zhao, Yongtao Wang, Zhenzhen Xu, Xiaomeng Wu, Xiaojun Liao
Summary: This study analyzed the dynamic changes of bacterial compositions during sweet potato sour liquid (SPSL) fermentation using SMRT sequencing, identifying the key role of Leuconostoc citreum in starch flocculation. This newly discovered strain showed excellent starch-flocculating abilities and significantly reduced the time required for total starch sedimentation in the traditional SPSL fermentation process. The findings suggest that this novel bioflocculant can modernize the traditional SPSL fermentation process and achieve rapid and highly efficient starch sedimentation.
FOOD RESEARCH INTERNATIONAL
(2021)
Article
Engineering, Environmental
Erkin Kocaman, Meltem Yildiz
Summary: In this study, the treatment of oil-containing wastewater was carried out using modified starch as a natural flocculant. The effectiveness of starch flocculants under different conditions was evaluated, and it was found that modified starch can compete with PAM but requires further development.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Biotechnology & Applied Microbiology
Asmita Gupta, Madan Kumar, Radha Sharma, Ritu Tripathi, Vivek Kumar, Indu Shekhar Thakur
Summary: This study analyzed and tested the flocculation properties of extracellular polymeric substances (EPS) produced by the thermotolerant strain Bacillus sp. ISTVK1 in wastewater treatment. The results showed that the EPS exhibited the highest flocculating activity on the 6th day, at pH 6, temperature 32.7 degrees C, and with the presence of AlCl3 salt. The application of bacterial EPS in real wastewater also achieved significant reduction in organics and removal of certain aromatic contaminants.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2023)
Article
Chemistry, Physical
Junhao Fu, Zhifeng Zhang, Guanshuo Han, Haisheng Han, Ruohua Liu, Liqiang Zeng, Jianhua Kang, Tong Yue
Summary: This study focuses on the purification of starch wastewater through metallic-starch complexes (MSCs) and magnetic flocculation. Metal ions were added to interact with starch and form MSCs, which were then adsorbed by magnetic particles for rapid settlement under an external magnetic field. The combined use of MSCs and magnetic flocculation achieved efficient purification of starch wastewater.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Engineering, Environmental
Vicky Kumar, Adel Al-Gheethi, Syazwani Mohd Asharuddin, Norzila Othman
Summary: This study examines the potential of cassava peel starch as an alternative for treating institutional wastewater, optimizing the treatment process using response surface methodology and determining its economic feasibility through techno-economic analysis.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Multidisciplinary Sciences
Ashwini Prabhakar Shende, Ramalingam Chidambaram
Summary: In this study, the effectiveness of cocoyam bioflocculant (CYBF) and chemical flocculant in removing heavy metals, COD, BOD, TDS, TSS, sulphate, nitrate, and dyes from tannery effluent and synthetic dye wastewater was compared. Various analytical techniques were used to characterize the bioflocculant. The results showed that the CYBF had excellent flocculation efficacy, achieving high removal rates for various pollutants. It was found that electrostatic force of attraction and hydrogen bonding were the main mechanisms for dye removal, while only electrostatic interactions were observed for metal adsorption.
Review
Green & Sustainable Science & Technology
Ruoyu Chu, Shuangxi Li, Liandong Zhu, Zhihong Yin, Dan Hu, Chenchen Liu, Fan Mo
Summary: This article reviews the current advances in pelletization of microalgae with fungi for efficient biomass accumulation and harvesting. It also highlights the effects of fungal-algal cultivation on downstream processing for biofuel production, along with the challenges and future perspectives in large-scale harvesting and integrated biorefinery exploration.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2021)
Article
Engineering, Chemical
Yong Nie, Zimin Wang, Rui Zhang, Jiangya Ma, Hao Zhang, Sha Li, Jincheng Li
Summary: This study found that using Aspergillus oryzae as a bioflocculant can effectively treat turbid drinking water, with high efficiency, environmental friendliness, and convenience. Aspergillus oryzae achieves flocculation by secreting metabolites, and it is adaptable to a wide range of pH levels.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Environmental
Nur Syahirah Mohamed Hatta, Shiew Wei Lau, Masahiro Takeo, Han Bing Chua, Priyanka Baranwal, Nabisab Mujawar Mubarak, Mohammad Khalid
Summary: BF01314, a novel soluble chitosan-like bioflocculant derived from Citrobacter youngae GTC 01314, exhibited strong flocculation activities in kaolin suspension and activated sludge, with a broad operating window and significant dewaterability improvement. The flocculation mechanisms were found to be governed by electrostatic charge patching and bridging, making BF01314 a potential candidate for suspended solids removal in water and wastewater treatment.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Geochemistry & Geophysics
Nkosinathi Goodman Dlamini, Albertus Kotze Basson, Viswanadha Srirama Rajasekhar Pullabhotla
Summary: Wastewater treatment costs are rising, leading to a search for more environmentally friendly alternatives. Bimetallic nanoparticles, such as iron copper nanoparticles prepared using nanotechnology, show promising flocculation capabilities in coal mine wastewater treatment.
Article
Materials Science, Multidisciplinary
Zhisheng Liu, Jianhui Wang, Guang Li, Shaodong Yang, Haipeng Yang, Jinlong Zuo, Yuyang Wang
Summary: This study focuses on the modification of chitosan film using GTA and its application in treating potato starch wastewater. The modified chitosan film shows improved properties and demonstrates effective flocculation of granular pollutants in the wastewater.
Article
Environmental Sciences
Shuai Wu, Jingmiao Zhang, Ao Xia, Yun Huang, Xianqing Zhu, Xun Zhu, Qiang Liao
Summary: Microalgae-based technology is an environmentally friendly, low-cost, and efficient approach for treating oxytetracycline (OTC) wastewater. This study found that the growth of microalgae was promoted at OTC concentrations below 50 mg L-1, but significantly inhibited at concentrations higher than 100 mg L-1. The removal of OTC by microalgae was mainly attributed to photolysis, biodegradation, biosorption, and hydrolysis. The study confirms that microalgae can be an excellent technology for treating antibiotics wastewater while accumulating microalgae biomass.
ENVIRONMENTAL RESEARCH
(2022)
Article
Biotechnology & Applied Microbiology
Yinlu Liu, Yan Zeng, Jiangang Yang, Peng Chen, Yuanxia Sun, Min Wang, Yanhe Ma
Summary: In this study, a novel bioflocculant produced by Corynebacterium glutamicum Cg1-P30 was investigated. The bioflocculant showed good flocculating activity and thermal stability in acid wastewater treatment, and had the potential to efficiently remove metal ions from acid mine wastewater.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Tomasz Zieba, Dominika Solinska, Artur Gryszkin, Malgorzata Kapelko-Zeberska, Bartosz Raszewski, Durdica Ackar, Jurislav Babic, Borislav Milicevic, Antun Jozinovic
Summary: Potato starch was processed by extrusion and roasting with apple distillery wastewater to produce starch esters substituted with malic acid residues. The higher roasting temperatures led to a higher degree of starch esterification. The modified starch exhibited darker color, increased resistance to amylolytic enzymes, and reduced solubility and heat of phase transition. Other properties of the starch varied depending on the extrusion and roasting temperatures, suggesting a novel method for resistant starch production.
APPLIED SCIENCES-BASEL
(2021)
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)