Lemos, Valfredo Azevedo Junior, Ivanilson Vieira Souza Santos, Luana Bastos Barreto, Jeferson Alves Ferreira, Sérgio Luís Costa
Published in
Water, Air, & Soil Pollution
In this work, a simple and fast method for the determination of cobalt in vitamin B12 and water samples was developed. The procedure is based on the preconcentration of the element using dispersive liquid-liquid microextraction (DLLME) and subsequent detection by digital image colorimetry. DLLME was performed with trichloroethylene (extraction solv...
Cai, Wei Li, Yi Zhang, Wenlong Niu, Lihua Wang, Longfei Cheng, Haomiao
Published in
Water, Air, & Soil Pollution
Eukaryotes are critical regulators of ecosystem functions in river systems. However, little is known about vertical micro-eukaryotic composition, diversity, and assembly patterns in urban aquaculture systems under vertical geochemical gradients. Molecular analysis based on 18S rRNA gene sequencing was performed to investigate the spatial variation ...
Choi, Hee-Jeong
Published in
Water, Air, & Soil Pollution
Fishery byproducts were acidogenically fermented with agricultural wastes (corncob, cabbage waste, and fruit peel), and fishery acidogenic fermentation broth (FFB) was used to observe sludge reduction and biogas production in anaerobic co-digestion. The experiment was conducted using a batch test for 30 days in mesophilic conditions. Samples with F...
Teles, Maria Nazaré Oliveira Santos, Brenda Lohanny Passos Silva, Daniel Pereira Teixeira, José António Ruzene, Denise Santos
Published in
Water, Air, & Soil Pollution
Several industrial sectors produce tons of effluents daily containing a high amount of hazardous chemical pollutants that pose a major threat to the environment and human health. Current wastewater treatment methods, such as flocculation and activated carbon adsorption, have drawbacks linked to high material cost and too much energy consumption. Th...
Müller, Juliana Braun Toledo Ramos, Débora Fernandes, Marilda Corseuil, Henry Xavier
Published in
Water, Air, & Soil Pollution
The widespread use of diesel/biodiesel blends as a transportation fuel can increase the risk of groundwater contamination, which requires remediation actions. Two pilot-field experiments were conducted to assess and compare their potential to treat groundwater contaminated with B20 (20% biodiesel and 80% diesel, v/v), using combined iron and sulfat...
Borji, Hadil Ayoub, George M. Bilbeisi, Rana Nassar, Nashaat Malaeb, Lilian
Published in
Water, Air, & Soil Pollution
Efficient removal of heavy metals from water and wastewater is a necessity for human and environmental well-being. Agricultural, domestic, and industrial waste discharges increase with the increase in the global population. Discharges are loaded with toxic metallic substances that inevitably reach water sources. Conventional treatment methods are i...
Liu, Caixia Li, Xu Li, Yeguang Wen, Xiaobin
Published in
Water, Air, & Soil Pollution
Arthrospira platensis is a candidate for removing nitrogen from caprolactam wastewater, but the concentrated cyclohexanone (CHN) and cyclohexanol (CHL) in the wastewater have an unknown effect on A. platensis growth. The aim of this study was to evaluate the feasibility of A. platensis for caprolactam wastewater treatment and obtain safe exposure c...
Assawadithalerd, Mongkolchai Phasukarratchai, Naphatsarnan
Published in
Water, Air, & Soil Pollution
Surfactants are substances applicable in the removal of heavy metals from contaminated soil. This study aims to investigate the effects of surfactant mixtures, composed of nonionic, anionic, and cationic surfactants, on the removal efficiency of Cd and Zn by mixture design (MD). Central composite rotatable design (CCRD) was integrated to optimize t...
Wang, Hengfeng Luo, Peicheng
Published in
Water, Air, & Soil Pollution
This work focuses on the preparation of eco-friendly adsorbents from waste pork bone to remove heavy metal ions. Two adsorbents, bone char (BC) and cellulose-modified BC (MCC-BC), are prepared successfully and characterized by FTIR, XRD, BET, and Zeta potential. The influences of pH, temperature, contact time, adsorbent dosage, and initial concentr...
Girotto, Laís Espíndola, Evaldo Luiz Gaeta Gebara, Renan Castelhano Freitas, Juliane Silberschmidt
Published in
Water, Air, & Soil Pollution
The mining sector has great importance to the economic activity in Brazil. However, it is also responsible for several environmental impacts such as the rupture of the Fundão dam (Mariana, Brazil) that resulted in the spillage of 50 million m3 of mining tailings in the Doce River Basin. This study evaluated the acute and chronic effects of Fundão t...
