Month: February 2018

The growth of water hyacinth (Eichhornia crassipes (Mart.) Solms) and water lettuce (Pistia stratiotes L.) in domestic wastewater in wastewater treatment plant (WWTP) bojongsoang, Bandung, Indonesia – JBES

Tony Sudjarwo, Nisyawati, Nia Rossiana and Wibowo Mangunwardoyo

Biology Department, Faculty of Mathematics and Natural Sciences, Universitas Indonesia, Depok, Indonesia

Biology Department, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Bandung, Indonesia

Key words: Domestic wastewater, Eichhornia crassipes, Growth, Pistia stratiotes.

Abstract

Domestic wastewater containing ammonia and phosphate are the main pollutants of toxin. Its affects the growth of aquatic plants, including of Eichhornia crassipes and Pistia stratiotes. The plants were placed outlet in anaerob, facultative, and maturation ponds in Wastewater Treatment Plant (WWTP) Bojongsoang, Bandung. Continue reading The growth of water hyacinth (Eichhornia crassipes (Mart.) Solms) and water lettuce (Pistia stratiotes L.) in domestic wastewater in wastewater treatment plant (WWTP) bojongsoang, Bandung, Indonesia – JBES

Morphological traits of control-pollinated fruits in African plum (Dacryodes edulis (G.Don).Lam.) using multivariate statistical techniques – IJAAR

J.T. Makueti, Z. Tchoundjeu, A. Kalinganire, B. A. Nkongmeneck, L. Kouodiekong, E. Asaah1 and A. Tsobeng

World Agroforestry Centre, BP 16317, Yaounde, Cameroon

World Agroforestry Centre, ICRAF-WCA/Sahel, BPE 5118, Bamako, Mali, Cameroon

University of Yaounde I, BP 812, Yaounde, Cameroon

Key words: Breeding program, cluster analysis, controlled-cross-hand-pollination, phenotypic variation, principal component analysis.

Abstract

Phenotypic variation on 26 well-known accessions of African plum collected from four provenances established as genebanks was assessed under controlled-field conditions using a full nested mating design. Data were recorded for 12 agro-morphological fruit traits using multivariate statistical techniques. Continue reading Morphological traits of control-pollinated fruits in African plum (Dacryodes edulis (G.Don).Lam.) using multivariate statistical techniques – IJAAR

Impact of bio-fertilizers and different levels of lead on pigment content of wheat (Triticum aestivum L.) – JBES

Alireza Pazoki, Mohammad Nabi Ilkaee, Mahdi Davoodi Far, Farid Golzardi

Department of Agronomy and Plant Breeding, Yadegar-e-Imam Khomeini (RAH) Shahre-rey Branch, Islamic Azad University, Tehran, Iran

Department of Agronomy, Karaj Branch, Islamic Azad University, Karaj, Iran

Department of Agronomy and Plant Breeding, Faculty of Agriculture, Roudehen Branch, Islamic Azad University, Roudehen, Iran

Young Researchers and Elite Club, Karaj Branch, Islamic Azad University, Karaj, Iran

Key words: Lead, Chlorophyll, Carotene, Lead, Wheat, Xantophyll.

Abstract

Among heavy metals, lead is a potential pollutant that readily accumulates in soils and sediments. Although lead is not an essential element for plants, it gets easily uptake, accumulated in different plants sections and had destructive effects on leaf pigments in photosynthetic reaction. Continue reading Impact of bio-fertilizers and different levels of lead on pigment content of wheat (Triticum aestivum L.) – JBES

The nutritional and mycoflora changes during storage of groundnut (Arachis hypogea) – IJAAR

Emmanuel Dayo Fagbohun, Olajide Sunday Faleye

Department of Microbiology, Ekiti State University, P.M.B. 5363, Ado-Ekiti, Nigeria

Key words: Nutritive value, mycoflora, sundried Arachis hypogea, storage.

Abstract

The nutritional and mycoflora changes of groundnut (Arachis hypogea) were investigated during a storage period of twenty weeks. A total number of seven fungal species were identified namely, Aspergillus flavus, Aspergillus niger, Aspergillus fumigatus, Rhizopus sp., Penicillium sp., Mucor sp. and Fusarium sp. Continue reading The nutritional and mycoflora changes during storage of groundnut (Arachis hypogea) – IJAAR

Photocatalytic degradation of malachite green in aqueous solution using TiO2 nanocatalyst – JBES

Omid Bibak, Majid Aliabadi

Department of Chemical Engineering, Shahrood Branch, Islamic Azad University, Shahrood, Iran

Department of Chemical Engineering, Birjand Branch, Islamic Azad University, Birjand, Iran

Key words: Malachite Green, Photocatalytic degradation, UV light, TiO2

Abstract

The main objective of this work was to study the degradation of the Malachite Green (MG) in aqueous solution by using titanium dioxide as a photocatalyst in a Multi-tube photoreactor. The effects of operating conditions such as initial substrate concentration, catalyst loading, pH value, inorganic salts and light intensity on the removal efficiency were evaluated. The apparent first-order rate constants (kap) were used to evaluate the degradation efficiency of MG. The optimum conditions were evaluated with initial concentration ranging from 5-50 mg/L, and TiO2 dosing ranging from 0.05-1.0 g/L in the presence of three UV-C lamps. The optimum condition was found to be 0.1 g/L of TiO2 and 10 mg/L of MG at pH=5. However, the presence of HCO3- anion leads to an increase in the effectiveness of the photocatalytic degradation. Results showed considerable reductions of MG concentration using UV/TiO2 process. Finally, this process compared with UV/H2O2 process. The results of this work proof that photocatalysis is a promising technology to reduce dyestuff (MG) from aqueous solutions.

Get the original articles in Source: Volume 5, Number 4, October 2014 – JBES

Journal Name: Journal of Biodiversity and Environmental Sciences (JBES)

Published By: International Network for Natural Sciences

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