Response of Epiphytic Algae to Heavy Pollution of Water Bodies

Abstract

The objective of the present work was to study the structure of epiphyton in water bodies significantly differing in the degree of their contamination. In the studied water bodies, the concentration of ammonia (<inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="00706-ilm01.gif"/>) accounted for 0.04-74.00 mg/L; nitrite (<inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="00706-ilm02.gif"/>), 0.002-1.750 mg/L; nitrate (<inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="00706-ilm03.gif"/>), 0.13-58.00 mg/L; inorganic compounds of phosphorus (Pinorg), 0.041-0.272 mg/L; chloride (Cl-), 34.5-560.5 mg/L; whereas the content of organic matter (DO) was 18.0-81.0 mg O/L. The numbers of algae were determined by a direct count. Biomass was calculated by the count cell volume method. The Generic Diatom Index, the Pantle-Buck saprobic index, and the Shannon index of species diversity were used to analyze algal community structure. This study found that epiphyton responded to heavy pollution with changes in its species richness, taxonomic structure, species composition, quantitative indices, numbers and biomass structure, dominant complex, and ecological spectrum.

Hydrothermal growth of ZnO nanoparticles on the surface of two kinds of Ti 3 C 2 co‐catalysts with different interlayer spacing towards enhanced photocatalytic activity

“…where α, hν, A and E g are the absorbance, photon energy, constant and bandgap energy, respectively. Figure 8 displays the (αhν) 2 versus hv curves of as-prepared ZnO, ZTX and ZTUX samples, and the band gaps can be acquired by lengthening the straight portion of curves to the x-axis, which exhibits that the bandgap energies of ZTX and ZTUX samples are narrower than that of the ZnO, suggesting that optical absorption of ZnO is enhanced through the hybridization with Ti 3 C 2 or Ti 3 C 2 -U.…”

“…Nowadays, water pollution has become a serious global problem to harm the ecosystems and threaten human health [1,2]. In particular, large amounts of synthetic organic dyes are widely used in various fields, for example textile, paper, leather, pharmaceutical, cosmetic and nutrition industries.…”

Structural Characteristics of Periphytic Algal Community and Its Relationship with Environmental Factors in the Taiyuan Region of the Fenhe River

“…The COD of water species is large, indicating that there are more reducing substances, organic matter, and microorganisms in water, and the DO will thus be very low, which is consistent with the measured DO value. On the one hand, high temperatures in summer can promote the growth of algae, which weaken the self-purification capacity of water and cause water pollution to varying degrees [43]. On the other hand, there is a lot of rainfall in the wet season, and nitrogen and phosphorus are released from the sediments due to the water disturbance [44].…”

Hybridisation of ZnO with Ti 3 C 2 as a co‐catalyst for enhanced photocatalytic activity

“…Water pollution is a significant global issue due to its adverse effects on human health and serious damage to ecosystems [1, 2]. In particular, synthetic organic dyes, which are extensively used in many fields such as the textile industry, leather tanning industry, and paper production, can cause considerable water pollution because these pollutions usually present carcinogenic and mutagenic properties [3].…”