Article
Environmental Sciences
Zimi Ye, Zhongyu Guo, Jieqiong Wang, Lilan Zhang, Yuchen Guo, Chihiro Yoshimura, Junfeng Niu
Summary: ACE photodegradation rates were found to be significantly higher in river water compared to pure water, especially in the presence of HCO3-. The presence of both NO3- and DOM also increased the ACE photodegradation rates, with center dot OH and 3DOM* playing a role in the degradation process. However, the addition of DOM to a solution with HCO3- weakened the enhancement effect of HCO3- on ACE photodegradation.
Article
Agricultural Engineering
Zeming Ye, Hao Ding, Ziliang Yin, Wenxiang Ping, Jingping Ge
Summary: The study revealed that amoxicillin has significant effects on humic acid formation and bacterial community structure during chicken manure aerobic composting, primarily altering the abundance of bacteria and inhibiting the accumulation of humic acid.
BIORESOURCE TECHNOLOGY
(2021)
Article
Environmental Sciences
You-Sheng Liu, Yu-Xiao Cheng, Dan Wu, Quan-Le Chen, Guang-Guo Ying
Summary: This study investigates the photochemical behavior of 5-TTri and CBT in aqueous solutions under UV radiation, revealing their photolysis rates are influenced by pH, salinity, metal ions, and humic acid. Experimental data suggests tentative photo transformation schemes for both compounds, involving various photoproducts through bond scission and dechlorination processes.
ENVIRONMENTAL RESEARCH
(2021)
Article
Engineering, Environmental
Zhenran Wang, Tao Fu, Linrui Zhong, Yongsheng Fu, Yunlan Peng, Shixiang Wang, Yiqing Liu
Summary: Bicarbonate (HCO3-) and humic substances (HS) were found to synergistically enhance the degradation of diclofenac (DCF) by the Cu(II)/peracetic acid (PAA) process. The mechanism of their impacts on the system and the reactive species generated were investigated. Organic radicals and Cu(III) were found to be generated in the system, with Cu(III) being the dominant reactive species in the presence of fulvic acid (FA). The operating parameters were optimized for efficient DCF degradation. The presence of HS and HCO3- in real waters also strongly enhanced DCF elimination.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2022)
Article
Environmental Sciences
Xiqing Wang, Atif Muhmood, Deqing Ren, Pengjiao Tian, Yuqi Li, Haizhong Yu, Shubiao Wu
Summary: This study investigated the photodegradation characteristics of polystyrene microplastics (PS-MPs) in the presence of humic acid (HA) under ultraviolet light conditions. The results showed that HA promotes higher levels of reactive oxygen species, accelerating the photodegradation of PS-MPs. Additionally, HA contributes to a higher content of oxygen-containing compounds in the photodegradation of PS-MPs. The presence of HA also significantly affects the intermediates and final degradation products of PS-MPs.
Article
Environmental Sciences
Hang Yang, Yi Zhang, Shibin Xia
Summary: This study revealed the co-effect of clay mineral-based photocatalyst and humic acid on the photodegradation of dye, with a ratio of 1:3 for maifanite/g-C3N4 being optimal for the degradation process in the presence of humic acid.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Environmental Sciences
Anum Amin, Maria Manzoor, Muhammad Wajahat Ramay, Ali Hassan, Kiran Hina, Asad Syed, Ali H. Bahkali, Muhammad Arshad
Summary: This study aimed to assess the potential of nanoparticles for the photodegradation of antibiotics and the subsequent improvement in crop productivity and quality. The results showed that TiO2 nanoparticles were the most effective for the removal of antibiotics, with degradation rates of 65% for amoxicillin and 56% for levofloxacin on the 7th day. Furthermore, the application of TiO2 nanoparticles improved the growth and nutrient uptake of wheat under antibiotic stress.
Article
Engineering, Environmental
Nazanin Zahra Pourbaghaei, Mansoor Anbia, Fatemeh Rahimi
Summary: The study compared the adsorption behavior of humic acid on cellulose, chitosan, and nano zerovalent iron/chitosan, finding that nZVI/chitosan is highly effective in removing HA from aqueous media. Optimal conditions for pH, adsorbent amount, reaction time, and initial concentrations were determined using central composite design and response surface methodology, with the adsorption properties analyzed through kinetic and isotherm studies. Furthermore, the nZVI/chitosan nanocomposite exhibited strong antibacterial activity against pathogen bacteria strains, highlighting its potential as a promising adsorbent for simultaneous removal of nitrate and HA from aqueous solutions.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2022)
Article
Chemistry, Multidisciplinary
Karla V. L. Lima, Jany H. F. de Jesus, Joao L. Bronzel Jr, Raquel F. P. Nogueira
Summary: This study investigates the photolysis and disinfection of sulfamethoxazole and trimethoprim in a Waste Stabilization Pond under tropical irradiance. The results show that the pH-dependent speciation of antibiotics has a greater influence on their photolysis than the water matrix. Trimethoprim is more susceptible to indirect photolysis, and the generated photoproducts are persistent. Wastewater disinfection can be achieved after 70 hours of solar exposure, but the exposure time in the pond is not sufficient for complete photodegradation or disinfection, requiring further treatment.
JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
Olga K. Mmelesi, Rapelang Patala, Thabo T. I. Nkambule, Bhekie B. Mamba, Kebede K. Kefeni, Alex T. Kuvarega
Summary: In this study, ZnxCo1-xFe2O4 nanoparticles were successfully synthesized and characterized. The Zn0.4Co0.6Fe2O4 nanoparticles exhibited excellent performance in photocatalytic degradation and bacterial inactivation, indicating their great potential for applications.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Construction & Building Technology
Marie Giroudon, Matthieu Peyre Lavigne, Cedric Patapy, Alexandra Bertron
Summary: The study simulated the corrosion process of concrete by immersing it in synthetic solutions representing different compounds found in bio-waste, with acetic acid showing the highest aggressiveness and sodium bicarbonate solution exhibiting a protective effect.
MATERIALS AND STRUCTURES
(2021)
Review
Engineering, Environmental
Mengjie Ma, Tianyi An, Xinyi Zou, Mabruk Adams, Chongjun Chen
Summary: This article examines the influence of humic substances (HSs) on the performance and mechanism of the anammox process. It was found that low concentrations of HSs stimulate anammox activity, while high concentrations cause inhibition. Further research is needed to explore the microscopic mechanisms of how additional HSs affect anammox in actual wastewater.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Engineering, Environmental
Jieqiong Wang, Kai Wang, Lilan Zhang, Yuchen Guo, Zhongyu Guo, Wei Sun, Zimi Ye, Junfeng Niu
Summary: The presence of HCO3- significantly increased the photodegradation rates of sotalol (SOT) but had no effects on carvedilol and arotinolol. The formation of carbonate radical (CO3 • -) by direct oxidation of HCO3- played a significant role in SOT photodegradation. Competition kinetics experiments showed that all three β-blockers have high second-order rate constants for the reaction with CO3 • -, but only triplet-excited SOT has a higher reduction potential to oxidize HCO3- and produce CO3 • -.
Article
Plant Sciences
Behrooz Sarabi, Nasser Ghaderi, Jaleh Ghashghaie
Summary: This study investigated the effects of supplemental LED lights of various spectral compositions and their combination with humic acid on the physiological and biochemical responses of rocket plants. The results showed that LED combined with humic acid could improve the nutritional value and activity of enzymes involved in nitrate assimilation, as well as lower nitrate and ammonium concentrations.
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2022)
Article
Engineering, Civil
Xinyu Song, Meiyang Zhao, Anqi Chen, Xinyu Xie, Hongyu Yang, Shubo Zhang, Zimin Wei, Yue Zhao
Summary: This study evaluated the impact of terrestrial material input on the microbial and photodegradation processes of dissolved organic matter (DOM), and found that terrestrial DOM contained more humic-like fractions that were susceptible to photodegradation. The input of terrestrial materials also altered the microbial community and abundance. These findings are significant for understanding the fate of terrestrial DOM in the water column and predicting future DOM cycling processes.
JOURNAL OF HYDROLOGY
(2022)