Organic matter

This study was conducted to analyze water quality in a coastal province of Vietnam. Multivariate statistical methods, namely cluster analysis (CA) and principal component analysis (PCA) were utilized.

12p vibecca 01-10-2024 2 1   Download

The spread of organic farming has led to the need for identifying alternative sources of high-quality organic fertilizer. Azolla is a genus of floating aquatic ferns which has high nitrogen and organic matter content due to its fast growth and symbiotic relationship with nitrogen-fixing bacteria (Anabaena-azollae).

11p vibecca 01-10-2024 3 2   Download

Along with the development of the industry in Vietnam, the beery industry has contributed greatly to the state budget and creating jobs for labours. However, beer wastewater contains high organic matter, some wastewater discharged parameters such as BOD, COD, Nitrogen, Phosphorus, etc. usually exceed the permitted standards.

10p viyoko 01-10-2024 1 0   Download

Volatile organic compounds (VOCs) are one of the environmental pollutants of concern because they contribute to polluted environmental phenomena such as photochemical smog and secondary particulate matter. The current research focuses on preparing the manganese oxide catalyst by many different methods and evaluating their activity in the toluene oxidation reaction.

6p vikwong 29-09-2024 2 1   Download

This study aims to investigate the fouling mechanism, which mostly impacts the water permeability via empirical modeling. Normally, there are four different physical-based types of fouling: complete blocking, intermediate blocking, cake filtration and standard blocking or adsorption.

7p viyoko 24-09-2024 1 1   Download

With the impact of global climate change, saline intrusion into surface water in coastal areas has become a major issue. The water treatment using surface water in these areas has to deal with double issues including organic matters and salinity. This paper evaluated the trihalomethanes formation during the treatment of surface water at pilot scale using different disinfection dose and at different salinity levels.

11p vifaye 20-09-2024 1 1   Download

This study evaluated the enhancement of sewer’s sludge dewatering via mixing the sludge with different agro-wastes, including corn core powder, rice husk powder, bagasse powder and peanut shell powder.

13p vifaye 20-09-2024 2 1   Download

The research herein builds on the work of Rojek (2003) and further investigates the bioremediation of NOM wastes. The aim of this research was to evaluate the effectiveness of selected white-rot fungi and yeast for the biodegradative removal of concentrated NOM from solution. The effectiveness of the white-rot fungus P. chrysosporium ATCC 34541 for the biological degradation of different batches of MIEXTM NOM concentrate and the effects of different characteristics of the NOM on the process and thus the resistance of the NOM to microbial removal were investigated.

131p runthenight05 01-03-2023 9 3   Download

This study was aimed to investigate: the fouling potential of AOM released from M. aeruginosa on the ceramic MF membranes; the major components in the AOM governing the fouling of ceramic MF membranes; the role of the interaction between AOM and aquatic humics on the fouling of ceramic MF membranes; the effect of coagulation feed pre-treatment using various coagulants on the mitigation of AOM fouling; the effect of UV/H2O2 feedwater pre-treatment in mitigating AOM fouling.

154p runthenight07 01-03-2023 5 3   Download

The Cau River basin has recently raised significant concerns about associated pollution issues and their critical role in socio-economic development. This study aims at assessing and forecasting the impacts of domestic wastewater on the generation of greenhouse gas emissions in Cau River basin in 2030. The main methods have been applied in this study including data collection and analysis, synthesization and inheritance method of research documents.

8p vimalfoy 08-02-2023 10 3   Download

The research article "Polyester production by halophilic and halotolerant bacterial strains obtained from mangrove soil samples located in Northern Vietnam" reports halophilic and halotolerant bacteria isolated from mangrove forests located in Northern Vietnam. Several of these bacteria were able to synthesize polyhydroxyalkanoates (PHAs). PHAs are polyesters stored by microorganisms under the presence of considerable amounts of a carbon source and deficiency of other essential nutrient such as nitrogen or phosphorous.

12p runordie3 27-06-2022 10 3   Download

Báo cáo sử dụng nguồn số liệu từ các điều tra, khảo sát chất lượng môi trường trầm tích tại một số vùng nuôi lồng bè trong vùng biển Nam Trung Bộ. Kết quả cho thấy sự tích lũy và gia tăng thành phần của chất hữu cơ tại vùng nuôi: Giá trị về tổng chất hữu cơ (Total Organic Matter - TOM) cho thấy tăng cao từ 1,5 đến 2 lần so với giá trị của TOM ở tầng trầm tích bề mặt các vùng vịnh ven bờ.

5p viwendy2711 05-10-2021 27 3   Download

Đề tài này nêu lên các yếu tố cơ bản của quá trình giáo dục gồm: mục tiêu (objective), nội dung chuyên môn (subject matter), phương pháp và tổ chức (method and organization) và đánh giá (evaluation). Trong bốn yếu tố nêu trên, nội dung chuyên môn là một thành tố quan trọng và có mối liên hệ chặt chẽ với ba thành tố còn lại. Mời các bạn cùng tham khảo!

5p wangxinling 23-07-2021 22 1   Download

In this study, we aimed to use ferrate as an all-in-one alternative for the removal of chlorine-consumed compositions such as organic, color, turbidity, iron, and manganese in river water for water supply purposes. Ferrate (FeO42-) was simultaneously employed as coagulant and oxidant for purification of Saigon River water in order to reduce the formation of disinfection byproducts in the produced tap water.

7p larachdumlanat129 14-01-2021 8 1   Download

Constructed wetland is a low cost, effective technology and it is still in the state of improvement to enhance the treatment efficiency, especially in nutrient and trace elements treatment. This study investigated the effect of aerobic and anoxic conditions in Horizontal Subsurface Flow Constructed Wetland (HSFCW) on nutrient, organic, metal and Octylphenol - OP (Endocrine disrupting chemical) treatment.

8p larachdumlanat127 02-01-2021 11 2   Download

Copper and zinc are also toxic to humans when high levels are ingested and an excess of copper and zinc interferes with plant growth. It is important to monitor copper and zinc content in soil to avoid marketing food products which contain dangerous amounts of these heavy metals. This article presents the results of a study done to determine the copper and zinc content of soil and four agricultural products grown in Tan Lap Co-operative, Dan Phuong District, Hanoi.

6p tamynhan8 04-11-2020 20 2   Download

An analytical procedure for the analysis of carotenoids in marine sediments rich in organic matter has been developed. Analysis of these compounds is difficult; the application of methods used by other authors required optimization for the samples studied here.

14p tocectocec 25-05-2020 27 1   Download

Bài báo trình bày kết quả tạo bùn hạt hiếu khí, nghiên cứu được thực hiện trên mô hình bể phản ứng theo mẻ luân phiên (SBR) quy mô phòng thí nghiệm. Bể SBR hoạt động với chu kỳ cho mỗi mẻ là 3h, không khí được sục vào bể với mức lưu lượng 4,0 L/phút, tương ứng với vận tốc khí nâng khoảng 1,0 cm/s. Mời các bạn cùng tham khảo.

10p bautroibinhyen17 13-02-2017 70 6   Download

Biochemistry is the study of the chemical composition and reactions of living matter. All chemicals in the body fall into one of two major classes: organic or inorganic compounds. Organic compounds contain carbon. All organic compounds are covalently bonded molecules, and many are large. All other chemicals in the body are considered inorganic compounds. These include water, salts, and many acids and bases. Organic and inorganic compounds are equally essential for life.

51p tangtuy07 02-04-2016 41 3   Download

Chapter 12 - The central nervous system (part b), this chapter includes contents: Lateralization of cortical function, cerebral white matter, basal nuclei (ganglia), functions of basal nuclei, diencephalon, thalamus, thalamic function, hypothalamic function,...

45p tangtuy07 02-04-2016 42 2   Download