Optimization of ceramic waste filter for bathroom greywater treatment using central composite design (CCD)

The present study aims to develop a filtration system consisting of ceramic wastes as a treatment process of bathroom greywater to reduce chemical oxygen demand (COD), Total suspended solids (TSS), Total nitrogen (TN), and turbidity. Optimization of the reduction efficiency was investigated using response surface methodology (RSM) as a function of the ceramic practical sizes (0.25–1.18 mm) and hydraulic retention time HRT (1–3 h). The functional groups on the surface of the ceramic filter media were determined using Fourier transform irradiation (FTIR), while the scanning electron microscope (SEM) was used to determine the microstructure and the surface morphology of the ceramic particles. Results revealed that the optimal reduction of COD, TSS, TN, and turbidity was influenced by active sites of the filter media (C]C, C]O, CeOeH, and OH−) and was achieved under the operating conditions of 0.25 mm of ceramic particles after 3 h of HRT, the observed and predicted reduction for COD, TSS, TN, and Turbidity were 38.8 vs. 39.8%; 58.47 vs. 59.59%; 66.66 vs. 67.32%; 88.31 vs. 89.02%, respectively. It can be concluded that the effectiveness of the ceramic filter media is a potential source for the filtration of bathroom greywater

FIGURE 1. Parequula elongata n in Revision of the genus Parequula (Pisces: Gerreidae) with a new species from southwestern Australia

FIGURE 1. Parequula elongata n. sp. (A) and P. melbournensis (B). A) holotype, CSIRO H 6344 – 04, 76 mm SL, off Rottnest I., Western Australia; B) CSIRO H 6942 – 05, 108 mm SL, Investigator Strait, South Australia

Revision of the genus Parequula (Pisces: Gerreidae) with a new species from southwestern Australia

Iwatsuki, Yukio, Pogonoski, John J., Last, Peter (2012): Revision of the genus Parequula (Pisces: Gerreidae) with a new species from southwestern Australia. Zootaxa 3425: 42-54, DOI: 10.5281/zenodo.28200

FIGURE 9 in Aphyonid-clade species of Australia (Teleostei, Bythitidae) with four species new to Australian waters and a new species of Barathronus

FIGURE 9. Barathronus pacificus, OS 12519, 96 mm SL, female (37°43.2'N, 127°28.9'W) (Image: Marcus Krag)

Correction: Integrated Taxonomy Reveals Hidden Diversity in Northern Australian Fishes: A New Species of Seamoth (Genus Pegasus).

[This corrects the article DOI: 10.1371/journal.pone.0149415.]

Integrated Taxonomy Reveals Hidden Diversity in Northern Australian Fishes: A New Species of Seamoth (Genus Pegasus).

Fishes are one of the most intensively studied marine taxonomic groups yet cryptic species are still being discovered. An integrated taxonomic approach is used herein to delineate and describe a new cryptic seamoth (genus Pegasus) from what was previously a wide-ranging species. Preliminary mitochondrial DNA barcoding indicated possible speciation in Pegasus volitans specimens collected in surveys of the Torres Strait and Great Barrier Reef off Queensland in Australia. Morphological and meristic investigations found key differences in a number of characters between P. volitans and the new species, P. tetrabelos. Further mt DNA barcoding of both the COI and the slower mutating 16S genes of additional specimens provided strong support for two separate species. Pegasus tetrabelos and P. volitans are sympatric in northern Australia and were frequently caught together in trawls at the same depths

Review of Australian species of Plectranthias Bleeker and Selenanthias Tanaka (Teleostei: Serranidae: Anthiadinae), with descriptions of four new species

Gill, Anthony C., Pogonoski, John J., Moore, Glenn I., Johnson, Jeffrey W. (2021): Review of Australian species of Plectranthias Bleeker and Selenanthias Tanaka (Teleostei: Serranidae: Anthiadinae), with descriptions of four new species. Zootaxa 4918 (1): 1-116, DOI: https://doi.org/10.11646/zootaxa.4918.1.