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https://www.readbyqxmd.com/read/27933233/isolation-and-characterisation-of-crude-oil-sludge-degrading-bacteria
#1
Linda U Obi, Harrison I Atagana, Rasheed A Adeleke
BACKGROUND: The use of microorganisms in remediating environmental contaminants such as crude oil sludge has become a promising technique owing to its economy and the fact it is environmentally friendly. Polycyclic aromatic hydrocarbons (PAHs), as the major components of oil sludge, are hydrophobic and recalcitrant. An important way of enhancing the rate of PAH desorption is to compost crude oil sludge by incorporating commercial surfactants, thereby making them available for microbial degradation...
2016: SpringerPlus
https://www.readbyqxmd.com/read/27932659/genome-sequence-of-pseudomonas-citronellolis-sjte-3-an-estrogen-and-polycyclic-aromatic-hydrocarbon-degrading-bacterium
#2
Daning Zheng, Xiuli Wang, Pingping Wang, Wanli Peng, Nannan Ji, Rubing Liang
Pseudomonas citronellolis SJTE-3, isolated from the active sludge of a wastewater treatment plant in China, can utilize a series of environmental estrogens and estrogen-like toxicants. Here, we report its whole-genome sequence, containing one circular chromosome and one circular plasmid. Genes involved in estrogen biodegradation in this bacterium were predicted.
December 8, 2016: Genome Announcements
https://www.readbyqxmd.com/read/27931391/health-effects-associated-with-wastewater-treatment-reuse-and-disposal
#3
Xiaoyan Qu, Yuanyuan Zhao, Ruoren Yu, Yuan Li, Charles Falzone, Gregory Smith, Keisuke Ikehata
A review of the literature published in 2015 on topics relating to public and environmental health risks associated with wastewater treatment, reuse, and disposal is presented. This review is divided into the following sections: wastewater management, microbial hazards, chemical hazards, wastewater treatment, wastewater reuse, agricultural reuse in different regions, greywater reuse, wastewater disposal, hospital wastewater, industrial wastewater, and sludge and biosolids.
October 2016: Water Environment Research: a Research Publication of the Water Environment Federation
https://www.readbyqxmd.com/read/27931390/thermal-effects
#4
Ming Yan, Panyue Zhang, Guangming Zeng
This review focuses on the research literatures published in 2015 relating to topics of thermal effects in water pollution control. This review is divided into the following sections: biological nitrogen and phosphorus removal, wastewater treatment for organic conversion, industrial wastewater treatment, anaerobic digestion of sewage sludge and solid waste, sludge biochar preparation and application, pyrolysis of sewage sludge, reduction heavy metal in sewage sludge and soil, and other issues of wastewater and sludge treatment...
October 2016: Water Environment Research: a Research Publication of the Water Environment Federation
https://www.readbyqxmd.com/read/27931377/mine-drainage-generation-and-control-options
#5
Xinchao Wei, Carolyn M Rodak, Shicheng Zhang, Yuexin Han, F Andrew Wolfe
This review provides a snapshot of papers published in 2015 relevant to the topic of mine drainage generation and control options. The review is broken into 3 sections: Generation, Prediction and Prevention, and Treatment Options. The first section, mine drainage generation, focuses on the characterization of mine drainage and the environmental impacts. As such, it is broken into three subsections focused on microbiological characterization, physiochemical characterization, and environmental impacts. The second section of the review is divided into two subsections focused on either the prediction or prevention of acid mine drainage...
October 2016: Water Environment Research: a Research Publication of the Water Environment Federation
https://www.readbyqxmd.com/read/27931369/biosolids-and-sludge-management
#6
Kari Fitzmorris Brisolara, Helena Ochoa
This review section covers journal articles and conference papers related to biosolids and sludge management that were published in 2015. The literature review has been divided into the following sections: Biosolids regulations and management issues; Biosolids characteristics, quality and measurement including microconstituents, pathogens, nanoparticles and metals; Sludge treatment technologies including pretreatment and sludge minimization, conditioning and dewatering, digestion, composting and innovative technologies; Disposal and reuse including combustion/incineration, agricultural uses and innovative uses; Odor and air emissions; and Energy issues...
October 2016: Water Environment Research: a Research Publication of the Water Environment Federation
https://www.readbyqxmd.com/read/27931365/membrane-processes
#7
Marie-Laure Pellegrin, Marie S Burbano, Mary E Sadler, Jason Diamond, Simon Baker, Anthony D Greiner, Sara Arabi, Joseph Wong, Alexandra Doody, Lokesh P Padhye, Keith Sears, Peter Kistenmacher, Fraser Kent, Leila Tootchi, Jorge Aguinaldo, Sara Saddredini, Bill Schilling, Kyungnan Min, Robert McCandless, Bryce Danker, Neranga P Gamage, Sunny Wang, Peter Aerts
This review, for literature published in 2015, contains information related to membrane processes for municipal and industrial applications. This review is a subsection of the Treatment Systems section of the annual Water Environment Federation literature review and covers the following topics: pretreatment, membrane bioreactor (MBR) configuration, design, nutrient removal, operation, industrial treatment, anaerobic membrane systems, reuse, microconstituents removal, membrane technology advances, membrane fouling, and modeling...
October 2016: Water Environment Research: a Research Publication of the Water Environment Federation
https://www.readbyqxmd.com/read/27931363/activated-sludge-and-other-aerobic-suspended-culture-processes
#8
Chunying Li, Li Wei, Chein-Chi Chang, Yuhua Zhang, Dong Wei
This is a literature review for the year 2015 and contains information specifically associated with suspended growth processes including activated sludge, upflow anaerobic sludge blanket, and sequencing batch reactors. The review encompasses modeling and kinetics, nutrient removal, system design and operation. Compared to past reviews, many topics show increase in activity in 2015. These include, fate and effect of xenobiotics, industrial wastes treatment with sludge, and pretreatment for the activated sludge...
October 2016: Water Environment Research: a Research Publication of the Water Environment Federation
https://www.readbyqxmd.com/read/27931165/improvement-of-municipal-wastewater-pretreatment-by-direct-membrane-filtration
#9
Thiago A Nascimento, Fanny R Mejía, Fernando Fdz-Polanco, Mar Peña Miranda
The high content of particulate matter in municipal wastewater hinders the conventional anaerobic treatments at psychrophilic temperatures. The hydrolysis of the particulate chemical oxygen demand (pCOD) could be the limiting step under these conditions. Therefore, new pretreatments or improved conventional pretreatments are needed in order to separate pCOD. In this work, direct membrane filtration of municipal wastewater, using an ultrafiltration membrane, was investigated. This intensive pretreatment, which aims to separate soluble chemical oxygen demand (sCOD) and to concentrate pCOD, together with anaerobic treatments of both streams at psychrophilic and mesophilic conditions respectively, could be an alternative to the conventional activated sludge process...
December 8, 2016: Environmental Technology
https://www.readbyqxmd.com/read/27927071/investigation-on-evaluation-criteria-of-backwashing-effects-for-a-pilot-scale-baf-treating-petrochemical-wastewater
#10
Liya Fu, Changyong Wu, Yuexi Zhou, Jiane Zuo, Yan Ding
Parameters for evaluation criteria of air-water backwashing effects of a pilot-scale biological aerated filter (BAF) treating petrochemical wastewater were investigated. The parameters included the suspended solids (SS) and specific oxygen uptake rate (SOUR) of the backwashing effluent, recovery of the BAF after backwashing, and the removal of the biomass/bioactivity attached on the filter media after backwashing. Results showed that the weight of the total sludge produced in the backwashing effluent increased with the increase of water-backwashing intensity, while the total SOUR of backwashing effluent rose notably with the increase of air-backwashing intensity...
December 7, 2016: Environmental Technology
https://www.readbyqxmd.com/read/27924135/on-site-fecal-sludge-treatment-with-the-anaerobic-digestion-pasteurization-latrine
#11
Aaron A Forbis-Stokes, Patrick F O'Meara, Wangare Mugo, Gelas M Simiyu, Marc A Deshusses
The Anaerobic Digestion Pasteurization Latrine (ADPL) is a self-contained and energy neutral on-site sanitation system using anaerobic digestion of fecal sludge to generate biogas and then uses the biogas to pasteurize the digester effluent at 65-75°C to produce a safe effluent that can be reused locally as a fertilizer. Two ADPL systems were installed on residential plots with 17 and 35 residents in a peri-urban area outside of Eldoret, Kenya. Each system comprised three toilets built above a floating dome digester and one heat pasteurization system to sanitize the digested effluent...
November 1, 2016: Environmental Engineering Science
https://www.readbyqxmd.com/read/27923578/characterization-of-antibiotic-resistance-genes-in-representative-organic-solid-wastes-food-waste-recycling-wastewater-manure-and-sewage-sludge
#12
Jangwoo Lee, Seung Gu Shin, Hyun Min Jang, Young Beom Kim, Joonyeob Lee, Young Mo Kim
In this research, the distribution of antibiotic resistance genes (ARGs) was characterized in representative organic solid waste (OSW) in Korea: food waste-recycling wastewater (FRW), manure, and sewage sludge. The amounts of total ARG (gene copies/16S rRNA gene copies) was greatest in manure followed by sewage sludge and FRW. Interestingly, there were significantly different patterns in the diversity and mechanisms of ARGs. For example, a significant proportion of ARGs were tetracycline resistant genes in all the OSW (40...
December 3, 2016: Science of the Total Environment
https://www.readbyqxmd.com/read/27920767/ecophysiology-and-comparative-genomics-of-nitrosomonas-mobilis-ms1-isolated-from-autotrophic-nitrifying-granules-of-wastewater-treatment-bioreactor
#13
Soe Myat Thandar, Norisuke Ushiki, Hirotsugu Fujitani, Yuji Sekiguchi, Satoshi Tsuneda
Ammonia-oxidizing bacteria (AOB), which oxidize ammonia to nitrite in the first step of nitrification, play an important role in biological wastewater treatment systems. Nitrosomonas mobilis is an important and dominant AOB in various wastewater treatment systems. However, the detailed physiological and genomic properties of N. mobilis have not been thoroughly investigated because of limited success isolating pure cultures. This study investigated the key physiological characteristics of N. mobilis Ms1, which was previously isolated into pure culture from the nitrifying granules of wastewater treatment bioreactor...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27919563/waste-management-in-the-meat-processing-industry-conversion-of-paunch-and-daf-sludge-into-solid-fuel
#14
Ihsan Hamawand, Pam Pittaway, Larry Lewis, Sayan Chakrabarty, Justin Caldwell, Jochen Eberhard, Arpita Chakraborty
This article addresses the novel dewatering process of immersion-frying of paunch and dissolved air flotation (DAF) sludge to produce high energy pellets. Literature have been analysed to address the feasibility of replacing conventional boiler fuel at meat processing facilities with high energy paunch-DAF sludge pellets (capsules). The value proposition of pelleting and frying this mixture into energy pellets is based on a Cost-Benefit Analysis (CBA). The CBA is based on information derived from the literature and consultation with the Australian Meat Processing Industry...
December 2, 2016: Waste Management
https://www.readbyqxmd.com/read/27919554/quantitative-structure-property-relationships-for-predicting-sorption-of-pharmaceuticals-to-sewage-sludge-during-waste-water-treatment-processes
#15
L Berthod, D C Whitley, G Roberts, A Sharpe, R Greenwood, G A Mills
Understanding the sorption of pharmaceuticals to sewage sludge during waste water treatment processes is important for understanding their environmental fate and in risk assessments. The degree of sorption is defined by the sludge/water partition coefficient (Kd). Experimental Kd values (n=297) for active pharmaceutical ingredients (n=148) in primary and activated sludge were collected from literature. The compounds were classified by their charge at pH7.4 (44 uncharged, 60 positively and 28 negatively charged, and 16 zwitterions)...
December 2, 2016: Science of the Total Environment
https://www.readbyqxmd.com/read/27919537/acute-toxicity-reduction-and-toxicity-identification-in-pigment-contaminated-wastewater-during-anaerobic-anoxic-oxic-a-a-o-treatment-process
#16
Minjie Deng, Ying Zhang, Xie Quan, Chunhong Na, Shuo Chen, Wei Liu, Shuping Han, Shigeki Masunaga
In China, a considerable part of industrial wastewater effluents are discharged into the municipal wastewater treatment plants (WWTPs) after pretreatment in their own wastewater treatment plants. Even though the industrial effluents meet the professional emission standards, many micro-pollutants still remained, and they could be resistant in the municipal WWTPs with conventional activated sludge process. Pigment wastewater was chosen in this study, and the acute toxicity reduction and identification of the pigment-contaminated wastewater treated by the conventional anaerobic-anoxic-oxic (A/A/O) process were evaluated...
December 2, 2016: Chemosphere
https://www.readbyqxmd.com/read/27919534/adsorption-of-acid-extractable-organics-from-oil-sands-process-affected-water-onto-biomass-based-biochar-metal-content-matters
#17
Tazul I Bhuiyan, Jin K Tak, Sebastian Sessarego, Don Harfield, Josephine M Hill
The impact of biochar properties on acid-extractable organics (AEO) adsorption from oil sands process-affected water (OSPW) was studied. Biochar from wheat straw with the highest ash content (14%) had the highest adsorption capacity (0.59 mg/g) followed by biochar from pulp mill sludge, switchgrass, mountain pine, hemp shives, and aspen wood. The adsorption capacity had no obvious trend with surface area, total pore volume, bulk polarity and aromaticity. The large impact of metal content was consistent with the carboxylates (i...
December 2, 2016: Chemosphere
https://www.readbyqxmd.com/read/27918973/long-term-effects-of-cupric-oxide-nanoparticles-cuo-nps-on-the-performance-microbial-community-and-enzymatic-activity-of-activated-sludge-in-a-sequencing-batch-reactor
#18
Sen Wang, Zhiwei Li, Mengchun Gao, Zonglian She, Bingrui Ma, Liang Guo, Dong Zheng, Yangguo Zhao, Chunji Jin, Xuejiao Wang, Feng Gao
The long-term effects of cupric oxide nanoparticles (CuO NPs) on the performance, microbial activity and microbial community of activated sludge were investigated in a sequencing batch reactor (SBR). The SBR performance had no evident change at 0-10 mg/L CuO NPs, whereas the CuO NPs concentration at 30-60 mg/L affected the COD, NH4(+)-N and soluble orthophosphate (SOP) removal, nitrogen and phosphorus removal rate and microbial enzymatic activity of activated sludge. Some CuO NPs might be absorbed on the surface of activated sludge or penetrate the microbial cytomembrane into the microbial cell interior of activated sludge...
December 2, 2016: Journal of Environmental Management
https://www.readbyqxmd.com/read/27918924/biodegradable-sizing-agents-from-soy-protein-via-controlled-hydrolysis-and-dis-entanglement-for-remediation-of-textile-effluents
#19
Maiping Yang, Helan Xu, Xiuliang Hou, Jie Zhang, Yiqi Yang
Fully biodegradable textile sizes with satisfactory performance properties were developed from soy protein with controlled hydrolysis and dis-entanglement to tackle the intractable environmental issues associated with the non-biodegradable polyvinyl alcohol (PVA) in textile effluents. PVA derived from petroleum is the primary sizing agent due to its excellent sizing performance on polyester-containing yarns, especially in increasingly prevailing high-speed weaving. However, due to the poor biodegradability, PVA causes serious environmental pollution, and thus, should be substituted with more environmentally friendly polymers...
December 2, 2016: Journal of Environmental Management
https://www.readbyqxmd.com/read/27916500/achieving-ethanol-type-fermentation-for-hydrogen-production-in-a-granular-sludge-system-by-aeration
#20
Song Zhang, Min Liu, Ying Chen, Yu-Ting Pan
To investigate the effects of aeration on hydrogen-producing granular system, experiments were performed in two laboratory-scale anaerobic internal circulation hydrogen production (AICHP) reactors. The preliminary experiment of Reactor 1 showed that direct aeration was beneficial to enhancing hydrogen production. After the direct aeration was implied in Reactor 2, hydrogen production rate (HPR) and hydrogen content were increased by 100% and 60%, respectively. In addition, mixed-acid fermentation was transformed into typical ethanol-type fermentation (ETF)...
November 25, 2016: Bioresource Technology
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