Removal of metsulfuron methyl by Fenton reagent

Javeed Mohammed Abdul,Mahintha Kumar,Jaya Kandasamy,Saravanamuthu Vigneswaran 한국공업화학회 2012 Journal of Industrial and Engineering Chemistry Vol.18 No.1

The removal of metsulfuron methyl (MeS)—a sulfonyl urea herbicide from contaminated water was investigated by advanced oxidation process (AOP) using Fenton method. The optimum dose of Fenton reagent (Fe2+/H2O2) was 10 mg/L Fe2+ and 60 mg/L H2O2 for an initial MeS concentration ([MeS]0) range of 0–80 mg/L. The Fenton process was effective under pH 3. The degradation efficiency of MeS decreased by more than 70% at pH > 3 (pH 4.5 and 7). The initial Fe2+ concentration ([Fe2+]0) in the Fenton reagent affected the degradation efficiency, rate and kinetics. The degradation of MeS at optimum dose of Fenton reagent was more than 95% for [MeS] 0 of 0–40 mg/L and the degradation time was less than 30 min. The determination of residual MeS concentration after Fenton oxidation by UV spectrophotometry was affected by the interferences from Fenton reagent. The estimation of residual MeS concentration after Fenton oxidation by high pressure/performance liquid chromatograph (HPLC) was interference free and represented the actual concentration of MeS and does not include the by-products of Fenton oxidation. The degradation kinetics of MeS was modelled by second order reactions involving 8 rate constants. The two reaction constants directly involving MeS were fitted using the experimental data and the remaining constants were selected from previously reported values. The model fit for MeS and the subsequent prediction of H2O2 were found to be within experimental error tolerances.

Comparison of granular activated carbon bio-sorption and advanced oxidation processes in the treatment of leachate effluent

Javeed Mohammed Abdul,Ho Kyong Shon,Areerachakul Nathaporn,Jaya Kandasamy,Saravanamuthu Vigneswaran 한국화학공학회 2009 Korean Journal of Chemical Engineering Vol.26 No.3

Landfill leachate is a toxic effluent of a decomposing landfill that is produced when rainwater percolates through the landfill leaching out contaminants and pollutants. Untreated leachate is a potential source for the contamination of soil, surface and ground water. In this study, the treatment processes such as granular activated carbon (GAC) adsorption/bio-sorption (batch), and advanced oxidation processes (AOP) viz. photocatalysis and Fenton’s process were evaluated and compared by using synthetic landfill leachate (SLL) as a contaminant. TiO2 was used as a catalyst in photocatalysis, and Fenton’s reagent (H2O2/Fe+2) was used in Fenton’s process. The degradation of SLL effluent by the three above-mentioned processes was characterized by the % TOC removal. The % TOC removed by photocatalysis, Fenton oxidation and bio-sorption (which includes adsorption and biodegradation) was 30, 60 and 85%, respectively. The bio-sorption increased with the increasing GAC dose. The optimum dose of Fenton’s reagent in advanced oxidation was 15 and 400 milli moles of Fe+2 and H2O2, respectively. The Fenton’s process showed faster degradation kinetics compared to biodegradation and photocatalysis.

Comparative toxicity study on classical and modified version of Jawarish Jalinoos (a traditional Unani formulation) in rats

Gulam Mohammed Husain,Syed Shoeb Ahmed,Misbahuddin Azhar,Javed Inam Siddiqui,Mohammad Abdul Waheed,Munawwar Husain Kazmi 한국한의학연구원 2017 Integrative Medicine Research Vol.6 No.1

Background: Jawarish Jalinoos (JJ) is a classical semisolid traditional Unani formulation clinically used for the treatment of weakness of vital organs, liver, and stomach. Although JJ has been widely used clinically for several decades, no scientific report is available for its safety. Methods: JJ and its sugar-free tablet version (SFJJ; formulated to target diabetic population) were assessed for safety in rats. Ninety-day repeated dose oral toxicity study was performed as per the Organisation for Economic Co-operation and Development Guideline 408. JJ was orally administered at the dose of 2000 mg/kg bw/d, whereas SFJJ was orally administered at the doses of 506 mg/kg body weight (bw)/d, 1012 mg/kg bw/d, and 2024 mg/kg bw/d for 90 days. The animals were periodically observed for clinical signs of toxicity, mortality, morbidity, body weight changes, and feed consumption. At the end of the study, hematology, clinical biochemistry, electrolytes, gross pathology, relative organ weight, and histological examination were performed. Results: Treatment with SFJJ and JJ showed no significant differences in body weight gain, feed consumption, hematology, clinical biochemistry, and serum electrolytes. No gross pathological findings and differences in relative organ weights were observed between control and drug treated rats. Histological examination revealed no toxicologically significant abnormalities related with SFJJ or JJ treatment. Conclusion: The 90-day repeated dose oral toxicity study demonstrates that the no observed adverse effect level of SFJJ and JJ is greater than 2024 mg/kg bw/d and 2000 mg/kg bw/d (p.o.) in rats, respectively. Both formulations were found to be safe up to the tested dose levels and experimental conditions, and therefore safe for clinical use as specified in the literature.

Identifying Reading Strategies to Teach Literal, Reorganisation and Inferential Comprehension Questions to ESL Students

Muhammad Javed,Lin Siew Eng,Abdul Rashid Mohamed,Shaik Abdul Malik Mohamed Ismail 아시아영어교육학회 2016 The Journal of Asia TEFL Vol.13 No.3

Reading strategies assist English as a Second Language (ESL) teachers to teach reading comprehension effectively to ESL students in developing their reading comprehension abilities. This study aimed at identifying reading strategies used by teachers that help them teach literal, reorganisation and inferential comprehension questions to ESL students. The target population was the ESL teachers teaching at the secondary school level in Penang, Malaysia. The ESL teachers from ten secondary schools who were teaching English to Form Four students were selected through convenient sampling. A questionnaire consisting of reading strategies that help ESL teachers teach literal, reorganisation and inferential comprehension questions developed by the researchers was used to collect data. The data were analysed through descriptive statistics to determine the frequency of reading strategies used by the ESL teachers. The findings, based on the quantitative analysis of data, revealed that the ESL teachers use different reading strategies for teaching literal and reorganisation comprehension questions but a small repertoire of reading strategies was employed for teaching inferential comprehension questions. Therefore, the researchers suggested a productive means of reading strategies to employ for teaching reading comprehension, particularly for teaching inferential comprehension questions in order to enhance ESL students’ higher order thinking skills and reading comprehension abilities.

Development of HPTLC Fingerprinting and Phytochemical Study of a Polyherbal Unani Formulation

Alam, Abrar,Siddiqui, Javed Inam,Naikodi, Mohammed Abdul Rasheed,Kazmi, Munawwar Husain Cellmed Orthocellular Medicine and Pharmaceutical 2020 셀메드 (CellMed) Vol.10 No.1

Plants produce a wide range of active principles, making them a rich source of different types of medicines. Without any knowledge of the phytoconstituents or active principles the medicinal plants itself or in the form of polyherbal formulations, were used by all society of human being from ancient times for prevention and cure of disease, but most of the traditional formulations including the formulation of Ayurveda and Unani have not been scientifically validated in order to establish the pharmacopoeial standards to improve the efficacy. Globally, the people become conscious that uses of synthetic drugs for a long period is not safe; the trend of medical society at large is looking at alternatives from natural, safe sources to combat diseases. Due to this comprehension, it has been increased the demand for plant-derived medicine, and on the other side, it is extremely important to standardize the polyherbal formulations and validate them scientifically to improve their safety and efficacy. The polyherbal Unani formulation Safuf-e-Muallif is widely used and recommended in Unani system of medicine (USM) as a spermatogenic agent, semen thickening agent, etc. to treat sexual disorders viz. premature ejaculation, nocturnal emission, etc. The study mainly deals with phytochemical screening for the detection of nature of phytoconstituents and analytical technique like High-performance thin-layer chromatography (HPTLC) for developing fingerprint of Safuf-e-Muallif revealing specific identities of the drug. The phytochemical screening and HPTLC fingerprint profile for SM reported here may be used as a reference standard for quality control purpose in future.

Standardization and Development of Pharmacopoeial Standard Operating Procedures (SOPs) of Classical Unani Formulation

Mannan, Mohd Nazir,Kazmi, Munawwar Husain,Zakir, Mohammad,Naikodi, Mohammed Abdul Rasheed,Zahid, Uzma,Siddiqui, Javed Inam Cellmed Orthocellular Medicine and Pharmaceutical 2020 셀메드 (CellMed) Vol.10 No.2

Standardization of drug deals with confirmation of drug identity and determination of drug quality and purity. Unani herbal formulations are used in traditional medicine for the treatment of various diseases. Cancer is a disease which causes abnormal, uncontrolled growth of body tissue or cells, which tend to proliferate in an uncontrolled way. Spread of cancer from site of origin to other organs of the body is called metastasis. It is a hyper proliferative disorder involving, transformation, dysregulation of apoptosis, invasion and angiogenesis. The present study aimed to standardize a classical Unani formulation (CUF) described as anticancer properties. The CUF has been used for anti-cancerous activity (Dāfi'-i-saraṭān) in human population by Unani physicians for centuries. The standardization parameters carried out for classical Unani formulation are pharmacognostical studies, physicochemical parameters, high-performance thin layer chromatography (HPTLC), microbial load, aflatoxins, and heavy metals revealing specific identities and to evaluate Pharmacopoeial standards. Experiment and the data obtained established the Pharmacopoeial standards for this formulation for identification and quality control purpose. The CUF has been successfully standardized and standard operating procedures (SOPs) for its preparation has been laid down which may serve as a standard reference in future. The standardization data of this formulation may be used as a standard guideline for preparation of the formulation in future.